PHARMACEUTICAL RESOURCES INC
8-K, 1998-07-14
PHARMACEUTICAL PREPARATIONS
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 205497


                             ----------------------



                                    FORM 8-K


                                 CURRENT REPORT


                         PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934



Date of report (Date of earliest event reported): June 30, 1998


                         PHARMACEUTICAL RESOURCES, INC.
             (Exact name of registrant as specified in its charter)



   NEW JERSEY                         File Number 1-10827         22-3122182
- --------------------------------   ------------------------- -------------------
(State or other jurisdiction of     (Commission File Number) (I.R.S. Employer
incorporation or organization)                               Identification No.)



One Ram Ridge Road, Spring Valley, New York                           10977
- --------------------------------------------------------------------------------
   (Address of principal executive office)                         (Zip Code)


Registrant's telephone number, including area code: (914) 425-7100



                          TOTAL NUMBER OF PAGES -- 252
                       EXHIBIT INDEX IS LOCATED ON PAGE 9


<PAGE>

Item 1.  Change of Control.
- -------  ------------------

         Introduction

          On June 30, 1998 (the "Closing Date"), Pharmaceutical Resources, Inc.,
a New Jersey corporation (the "Company" or the "Registrant"), completed the sale
of 10,400,000  shares (the  "Shares") of the Company's  common stock,  par value
$.01 per share  (the  "Common  Stock"),  to Lipha  Americas,  Inc.,  a  Delaware
corporation  ("Lipha"),  at a price of $2.00  per  share or  $20,800,000  in the
aggregate.  Also on the Closing Date, the Company issued options (the "Options")
to purchase up to an aggregate of 1,171,040  shares of Common Stock (the "Option
Shares")  at an  exercise  price of $2.00  per share to Merck  KGaA,  Darmstadt,
Germany, a Kommanditgesellschaft  auf Aktien organized under the laws of Germany
("Merck  KGaA"),  and Genpharm  Inc., a Canadian  corporation  ("Genpharm"),  in
exchange for certain services to be provided to the Company.  Lipha and Genpharm
are subsidiaries of Merck KGaA.  Simultaneously  with the sale of the Shares and
the issuance of the Options,  Merck KGaA  purchased  1,813,272  shares of Common
Stock from Clal Pharmaceutical  Industries Ltd. ("Clal").  Such transactions and
certain  related   transactions  are  referred  to  in  this  Form  8-K  as  the
"Transaction."

         Immediately  following  the  closing  of the  Transaction,  Merck  KGaA
beneficially  owned  approximately 42% of the outstanding Common Stock. If Merck
KGaA and its  affiliates  exercise the Options and Merck KGaA acquires from Clal
an  additional  500,000  shares of Common  stock it has rights to in the future,
Merck KGaA would  beneficially own approximately  46% of the outstanding  Common
Stock.  Through its subsidiary  Lipha,  Merck KGaA  designated a majority of the
directors on the Company's  Board of  Directors.  As a result of its large stock
ownership and ability to appoint directors of the Company,  Merck KGaA is likely
to be able to exercise control over matters requiring shareholder approval.  The
Company  believes that the source of funds for the purchase price for the Shares
and the shares  purchased  from Clal was the working  capital of Lipha and Merck
KGaA.

         The following is a description  of certain terms of the Stock  Purchase
Agreement,  dated  March 25,  1998,  between  the  Company and Lipha (the "Stock
Purchase  Agreement")  and related  agreements.  Such agreements are attached to
this  Form 8-K as  exhibits.  The  following  description  of the  terms of such
agreements is qualified in their entirety by reference to such exhibits.

         General

         Stock  Purchase  Agreement.  On the Closing  Date,  the Company sold to
Lipha the Shares at an aggregate purchase price of $20,800,000 in cash, or $2.00
per Share.  The closing price of the Common Stock on The New York Stock Exchange
on March 25, 1998, the day the Stock Purchase Agreement was executed, was $2.625
per share.  The Shares are not  registered  under the Securities Act of 1933, as
amended (the "Securities Act"). However, Lipha has certain demand and piggy-back
registration  rights with  respect to the  Shares.  See  "--Registration  Rights
Agreement"  below. The Stock Purchase  Agreement  contains  certain  significant
terms,  obligations  and other  agreements,  as described  below,  including the
obligation  to grant and issue the  Options  in return  for the right to receive
certain  services,  Lipha's  right to designate a majority of the members of the
Company's  Board of Directors (the  "Board"),  Lipha's right of first refusal in
respect of certain  equity  offerings,  and Lipha's  agreement  not to engage in
certain extraordinary transactions.

         Board  Representation.  Lipha has the right to  designate a majority of
the members of the Board.  Pursuant to this right, Lipha has designated Bernhard
Scheuble,  Anthony S.  Tabatznik,  J. Neil  Tabatznik  and Klaus  Jander.  Three

                                      -2-
<PAGE>

members of the Board are comprised of Kenneth I. Sawyer, the Chairman, President
and Chief Executive Officer of the Company,  and two additional designees of the
Board prior to the consummation of the Stock Purchase  Agreement  (collectively,
the "Company  Designees").  Mark Auerbach and Stephen A.  Ollendorff are the two
other  Company  Designees.  All of such seven  persons  have been elected by the
shareholders  at the Annual Meeting of  Shareholders of the Company held on June
26, 1998 (the "Annual Meeting").  In addition,  Lipha has the right to designate
(i) jointly with the Company Designees, two members of the Board to comprise the
Audit Committee of the Board and (ii) the President and Chief Operating  Officer
of the  Company.  Mr.  Sawyer  will  continue  to serve as  Chairman  and  Chief
Executive  Officer of the  Company  and each of its  subsidiaries  upon  Lipha's
designation of a President.  The effect of the foregoing  agreement is to afford
voting  control to the designees of Lipha with respect to matters  determined by
the Board.

         Mr. J. Neil  Tabatznik,  a director of the Company,  is the Chairman of
Genpharm, which will develop, manufacture and distribute products to the Company
pursuant  to the  Distribution  Agreement,  dated  March 25,  1998,  between the
Company  and  Genpharm  (the  "Distribution  Agreement").   See  "--Distribution
Agreement"  below.  Mr. Anthony S.  Tabatznik,  a director of the Company,  is a
board member of Merck Pharma which  controls the  pharmaceutical  operations  of
Merck  KGaA,  including  Genpharm.  Dr.  Bernhard  Scheuble,  a director  of the
Company,  is Deputy Member of the Executive Board of Merck KGaA. The Company and
Genpharm and its  affiliate  are presently  parties to  distribution  agreements
entered into in 1992 and 1993. Under such distribution  agreements,  payments by
the Company to Genpharm and an affiliate in fiscal year 1997  accounted for less
than five percent of the Company's and Genpharm's  consolidated  gross revenues.
However,  in fiscal  year 1998,  it is  expected  that,  under the  Distribution
Agreement  and the other  distribution  agreements,  payments  by the Company to
Genpharm  and  its  affiliate   would  exceed  five  percent  of  the  Company's
consolidated gross revenues.

         Right of First Refusal. Lipha has a right of first refusal for a period
of six years  following the Closing Date to purchase all, but not less than all,
of any equity  securities  to be sold by the Company  pursuant  to any  proposed
non-registered  offering or any  registered  offering  solely for cash. If Lipha
does not exercise  its first  refusal  rights  within 30 days of notice from the
Company,   the  Company  may  sell  such   securities  to  any  third  party  on
substantially  the same terms and  conditions  as first  offered  to Lipha.  The
Shares and the Option Shares do not have any preemptive rights.

         Limitations on Related Party  Transactions  and Business  Combinations;
Lock-up.  Lipha has agreed,  for a period of three years  following  the Closing
Date, not to cause or permit the Company to engage in any  transactions or enter
into any  agreements or  arrangements  with, or make any  distributions  to, any
Affiliate  or Associate  (each as defined in the Stock  Purchase  Agreement)  of
Lipha without the prior written consent of a majority of the Company  Designees.
In addition, Lipha has agreed, for a period of three years following the Closing
Date,  not to propose  that the  Company,  or to cause or permit the Company to,
engage in business combinations or other extraordinary  transactions,  including
mergers and tender  offers,  without the prior written  consent of a majority of
the  Company  Designees  and the prior  receipt  of a fairness  opinion  from an
independent nationally recognized investment bank.

         As a condition to the closing of the Stock Purchase Agreement,  certain
holders of options to purchase Common Stock, including Mr. Sawyer, and the other
executive officers of the Company, have agreed not to exercise their options for
a period of three  years and 10 days from the  Closing  Date and  certain  other
holders,  including the non-employee  directors of the Company immediately prior
to the Closing Date,  have agreed not to exercise  more than  one-third of their
options annually commencing on the first anniversary of the Closing Date.

                                      -3-
<PAGE>

         Merck KGaA and the Company have  reached an agreement in principle  for
Merck KGaA to prepay in full a promissory note of a subsidiary of the Company in
the  principal  amount of $600,000 on behalf of such  subsidiary in exchange for
consideration  relating to the Company's  Israel-based  research and development
facility to be agreed upon in the future.

         Distribution   Agreement.   In  connection   with  the  Stock  Purchase
Agreement,  Genpharm and the Company have entered into a Distribution Agreement,
dated March 25, 1998 (the "Distribution  Agreement")  pursuant to which Genpharm
granted  exclusive  distribution  rights to the Company within the United States
and certain  other U.S.  territories  with respect to  approximately  40 generic
pharmaceutical  products  currently under  development or being sold by Genpharm
and its  affiliates  outside of the United  States.  Products may be added to or
removed  from the  Distribution  Agreement  by mutual  agreement of the parties.
Genpharm  is  required  to use  commercially  reasonable  efforts to develop the
products which are subject to the Distribution  Agreement and is responsible for
the  completion  of  product   development  and  for  obtaining  all  applicable
regulatory  approvals.  The  Company  will pay  Genpharm a  percentage  of gross
profits  attributable to sales of such products.  

         Services  Agreements.  On the  Closing  Date,  each of  Merck  KGaA and
Genpharm entered into separate  Services  Agreements to provide various services
to the  Company  for a period  of 36  months,  including,  but not  limited  to,
rendering advice and providing  technical support and assistance in the areas of
research and development, regulatory compliance,  manufacturing, quality control
and quality assurance,  administration,  marketing and promotion  (collectively,
the "Services").  In consideration of providing the Services, the Company issued
on the Closing Date, an Option to Merck KGaA to purchase up to 820,000 shares of
Common  Stock and an Option to  Genpharm  to  purchase  up to 351,040  shares of
Common Stock.

         Options.  The Options entitle Merck KGaA and Genpharm to purchase up to
an aggregate of 1,171,040  Option Shares at an exercise price of $2.00 per share
with  one-third of the total Option Shares  vesting  annually  commencing on the
first  anniversary of the Closing Date. The Options are  exercisable at any time
beginning three years and 10 days following the Closing Date and will terminate,
to the extent  unexercised,  on April 30, 2003. The Options  contain  provisions
that protect the holder against dilution by adjustment of the exercise price and
the number of Option Shares  issuable upon exercise in certain  events,  such as
stock  dividends,  stock  splits,  consolidation,  merger,  or  sale  of  all or
substantially  all of the  Company's  assets.  The holders of the Options do not
have any rights as shareholders of the Company unless and until the Options have
been exercised. The Options are not and the Option Shares will not be registered
under the Securities Act. However,  the Option Shares may be registered upon the
exercise of  registration  rights by the holders of the  Options  and/or  Option
Shares pursuant to certain demand and piggy-back  registration  rights under the
Registration Rights Agreement described below.

         Clal Sale Agreement.  Pursuant to a letter  agreement,  dated March 25,
1998 (the "Clal Sale Agreement"), between the Company, Merck KGaA and Clal, Clal
sold to Lipha on the Closing  Date,  an aggregate of 1,813,272  shares of Common
Stock at a price of $2.00 per share. Pursuant to the Clal Sale Agreement,  Merck
KGaA  agreed to pay Clal,  on the second  anniversary  of the Closing  Date,  an
amount equal to the excess, if any, of the weighted average trading price of all
trades in shares of Common  Stock on The New York Stock  Exchange  during the 30
trading days preceding such date over $2.00, multiplied by 500,000. In addition,
Clal has the right to cause Merck KGaA  and/or the  Company to  purchase  Clal's

                                      -4-
<PAGE>

remaining  500,000 shares of Common Stock during the five-day period  commencing
three years and five days after the Closing Date, in certain circumstances, at a
price of $2.50 per share. If Clal does not exercise such right,  then Merck KGaA
and the  Company  have the right to cause Clal to sell its  remaining  shares in
open market  transactions and Merck KGaA and the Company will purchase from Clal
all shares  which have not been sold within 90 days.  The shares of Common Stock
to be purchased  from Clal under the Clal Sale  Agreement are referred to herein
as the "Clal Shares." Clal has agreed,  for the  three-year and five-day  period
following the Closing Date, not to acquire or sell, directly or indirectly,  any
shares of Common Stock,  other than pursuant to the Clal Sale  Agreement,  enter
into any agreement with respect to the voting,  holding or  transferring  of any
shares  of  Common  Stock  or to  propose  or  participate  in any  transactions
involving the Company or recommend  others to take any of such  actions.  All of
Clal's rights under the Stock Purchase Agreement,  dated March 25, 1995, between
the Company and Clal,  including the right to appoint  directors of the Company,
terminated on the Closing Date.

         Registration  Rights  Agreement.  In  consideration  of the  rights and
benefits  obtained by the Company  under the Stock  Purchase  Agreement  and the
services  that  will  be  provided  to the  Company  pursuant  to  the  Services
Agreements,  the Company,  on the Closing Date, granted to Lipha, Merck KGaA and
Genpharm  (collectively,  the  "Holders")  certain  registration  rights under a
registration rights agreement (the "Registration Rights Agreement"). In general,
the Holders will not be able to freely sell the Shares, the Option Shares or the
Clal Shares (collectively,  the "Registrable Shares") without registration under
applicable   securities  laws  or  unless  an  exemption  from  registration  is
available.

         Starting  nine months  after the  Closing  Date,  the  Holders  will be
entitled to three demand  registrations of Registrable Shares and two additional
demand registrations if the Options are exercised. In addition, the Holders have
the right to register the  Registrable  Shares on each occasion that the Company
registers shares of Common Stock, subject to certain limitations and exceptions.
If the  Company  at any time  registers  shares of Common  Stock for sale to the
public, the Holders have agreed not to sell publicly, make any short sale, grant
any option for the purchase of or otherwise publicly dispose of shares of Common
Stock during the same period during which  directors  and executive  officers of
the Company are similarly limited in selling the Company's  securities up to 180
days after the effective date of the applicable registration statement.

         Amendment to Certificate of Incorporation

         At the Annual  Meeting,  the  shareholders  of the Company  approved an
amendment  to  Article  IV of the  Company's  Certificate  of  Incorporation  to
increase  the  authorized  number of shares of Common Stock from  60,000,000  to
90,000,000  (the  "Common  Stock  Amendment").  The purpose of the Common  Stock
Amendment is to provide  additional  shares of Common Stock for the consummation
of the  Transaction  and for other  valid  corporate  purposes  without  further
shareholder approval unless required by applicable law or regulation. The Common
Stock Amendment was  filed with the Secretary of State of New Jersey on June 26,
1998, a copy of which is attached as an exhibit to this Form 8-K.

         1997 Directors Stock Option Plan

         At the Annual Meeting,  the  shareholders  of the Company  approved the
Company's 1997 Directors Stock Option Plan (the "Directors  Plan").  The Company
has reserved  for issuance  under the  Directors  Plan 500,000  shares of Common
Stock. Options granted under the Directors Plan may be granted only to directors
of the Company who are not  employees  of the Company or  otherwise  eligible to
receive  options  under any other  plan  adopted by the  Company.  A copy of the
Directors  Plan is attached as an exhibit to this Form 8-K.  The 1995  Directors
Stock Option Plan terminated upon shareholder  approval of the Directors Plan at
the Annual Meeting.  A total of 100,000 shares of Common Stock were reserved and
available for issuance under the 1995 Directors Stock Option Plan.

                                      -5-
<PAGE>

Item 5.   Other Events.
- -------   -------------

          See Item 1 above.

Item 7.    Financial Statements and Exhibits.
- -------    ----------------------------------

       (c)  Exhibits.

        3.1    Certificate of Incorporation of the Registrant.

        3.2    Certificate   of   Amendment   to   the   Certificate   of
               Incorporation of the Registrant, dated August 3, 1993.

        3.3    Articles of Amendment to Certificate of  Incorporation  of
               the Registrant, dated June 26, 1998.

        3.4    By-Laws of the Registrant, as amended.

       10.1    Stock  Purchase  Agreement,  dated  March 25,  1998,  between the
               Company and Lipha Americas, Inc.

       10.2    Distribution Amendment, dated March 25, 1998, between the Company
               and Genpharm, Inc.*

       10.3    Services Agreement,  dated June 26, 1998, between the Company and
               Merck KGaA.

       10.4    Stock Option Agreement,  dated June 26, 1998, between the Company
               and Merck KGaA.

       10.5    Services Agreement,  dated June 26, 1998, between the Company and
               Genpharm Inc.

       10.6    Stock Option Agreement,  dated June 26, 1998, between the Company
               and Genpharm Inc.

       10.7    Registration  Rights  Agreement,  dated June 26, 1998,  among the
               Company, Lipha Americas, Inc., Merck KGaA and Genpharm Inc.

       10.8    Letter Agreement,  dated March 25, 1998, among the Company, Merck
               KGaA and Clal Pharmaceutical Industries Ltd.

       10.9    1997 Directors Stock Option Plan.

       10.10   Fourth  Amendment  and  Consent to Loan and  Security  Agreement,
               dated May 5, 1998,  among the Company,  General  Electric Capital
               Corporation, and the other parties named therein. 

                                      -6-
<PAGE>

  
       10.11   Amendment to  Employment  Agreement,  dated as of April 30, 1998,
               among the  Company,  Par  Pharmaceutical,  Inc.  and  Kenneth  I.
               Sawyer. 

       10.12   Amended and Restated Distribution Agreement,  dated
               as of May 1, 1998, among the Company,  Par  Pharmaceutical,  Inc.
               and SANO Corporation.*

       10.13   Release and  Amendment  Agreement,  dated May 1, 1998,  among the
               Company,  Par  Pharmaceutical,  Inc., SANO Corporation,  and Elan
               Corporation, plc.*

       10.14   Press Release of the Registrant, dated June 26, 1998.

       10.15   Press Release of the Registrant, dated June 30, 1998.



*    Certain portions of Exhibits 10.2, 10.12 and 10.13 have been omitted and
     have been filed with the Securities and Exchange  Commission  pursuant to a
     request for confidential treatment thereof.


                                      -7-

<PAGE>





                                   SIGNATURES

              Pursuant to the requirements of the Securities  Exchange of Act of
1934,  the  Registrant has duly caused this report to be signed on its behalf by
the undersigned thereunto duly authorized.


July 14, 1998


                                          PHARMACEUTICAL RESOURCES, INC.
                                                           (Registrant)


                                          /s/Dennis J. O'Connor
                                        ---------------------------------------
                                          Dennis J. O'Connor
                                          Vice President, Chief Financial
                                          Office and Secretary


                                      -8-
<PAGE>

                                  Exhibit Index

    Exhibit 
     No.            Description
    -------         -----------

        3.1    Certificate of Incorporation of the Registrant.

        3.2    Certificate   of   Amendment   to   the   Certificate   of
               Incorporation of the Registrant, dated August 3, 1993.

        3.3    Articles of Amendment to Certificate of  Incorporation  of
               the Registrant, dated June 26, 1998.

        3.4    By-Laws of the Registrant, as amended.

       10.1    Stock  Purchase  Agreement,  dated  March 25,  1998,  between the
               Company and Lipha Americas, Inc.

       10.2    Distribution Amendment, dated March 25, 1998, between the Company
               and Genpharm, Inc.*

       10.3    Services Agreement,  dated June 26, 1998, between the Company and
               Merck KGaA.

       10.4    Stock Option Agreement,  dated June 26, 1998, between the Company
               and Merck KGaA.

       10.5    Services Agreement,  dated June 26, 1998, between the Company and
               Genpharm Inc.

       10.6    Stock Option Agreement,  dated June 26, 1998, between the Company
               and Genpharm Inc.

       10.7    Registration  Rights  Agreement,  dated June 26, 1998,  among the
               Company, Lipha Americas, Inc., Merck KGaA and Genpharm Inc.

       10.8    Letter Agreement,  dated March 25, 1998, among the Company, Merck
               KGaA and Clal Pharmaceutical Industries Ltd.

       10.9    1997 Directors Stock Option Plan.

       10.10   Fourth  Amendment  and  Consent to Loan and  Security  Agreement,
               dated May 5, 1998,  among the Company,  General  Electric Capital
               Corporation, and the other parties named therein. 

                                      -9-
<PAGE>

  
       10.11   Amendment to  Employment  Agreement,  dated as of April 30, 1998,
               among the  Company,  Par  Pharmaceutical,  Inc.  and  Kenneth  I.
               Sawyer. 

       10.12   Amended and Restated Distribution Agreement,  dated
               as of May 1, 1998, among the Company,  Par  Pharmaceutical,  Inc.
               and SANO Corporation.*

       10.13   Release and  Amendment  Agreement,  dated May 1, 1998,  among the
               Company,  Par  Pharmaceutical,  Inc., SANO Corporation,  and Elan
               Corporation, plc.*

       10.14   Press Release of the Registrant, dated June 26, 1998.

       10.15   Press Release of the Registrant, dated June 30, 1998.



*    Certain portions of Exhibits 10.2, 10.12 and 10.13 have been omitted and
     have been filed with the Securities and Exchange  Commission  pursuant to a
     request for confidential treatment thereof.


                                      -10-


                                                                     Exhibit 3.1



                          CERTIFICATE OF INCORPORATION
                                       OF
                         PHARMACEUTICAL RESOURCES, INC.


                                    ARTICLE I

     The name of the corporation is Pharmaceutical  Resources, Inc. (hereinafter
the "Corporation").

                                   ARTICLE II

     The registered office of the Corporation  within the State of New Jersey is
located  at 14  Leslie  Place,  Tenafly,  New  Jersey  07670.  The  name  of the
Corporation's registered agent at such address is Mr. Stephen A. Ollendorff.

                                   ARTICLE III

     The  purpose of the  Corporation  is to engage in any  activity  within the
purposes for which  corporations may be organized under the "New Jersey Business
Corporation Act," N.J.S.A. 14A:l-1 et seq.

                                   ARTICLE IV

     (a) The  Corporation  is authorized to issue  60,000,000  shares of capital
stock which shall be designated the Common Stock, par value $.01 per share. Each
holder of Common Stock of the  Corporation  entitled to vote shall have one vote
for each share held thereof.

     (b) The  Corporation  is  authorized to issue  6,000,000  shares of capital
stock which shall be designated the Preferred Stock, par value $.0001 per share.

     The  Preferred  Stock  may be issued  in one or more  series.  The Board of
Directors is hereby  authorized  to issue the shares of Preferred  Stock in such
series and to fix from time to time before  issuance  the number of shares to be
included in any series and the  designation,  relative  rights,  preferences and
limitations  of all  shares  of such  series.  The  authority  of the  Board  of
Directors  with  respect to each series  shall  include,  without  limiting  the
generality of the foregoing, the determination of any or all of the following:

          (i)  The  number  of  shares  of any  series  and the  designation  to
     distinguish the shares of such series from the shares of all other series;


                                        1

<PAGE>



          (ii) The voting  powers,  if any, and whether  such voting  powers are
     full or limited in such series;

          (iii) The redemption  provisions,  if any,  applicable to such series,
     including the redemption price or prices to be paid;

          (iv) Whether dividends,  if any, shall be cumulative or noncumulative,
     the dividend rate or rates of such series and the manner of determining the
     same, and the dates and preferences of dividends on such series;

          (v) The  rights  of such  series  upon the  voluntary  or  involuntary
     dissolution of, or upon any distribution of the assets of, the Corporation;

          (vi) The  provisions,  if any,  pursuant  to which the  shares of such
     series are convertible into, or exchangeable for, shares of any other class
     or classes or of any other series of the same or any other class or classes
     of  shares,  or any  other  security,  of  the  Corporation  or  any  other
     corporation,  and the price or prices or the rates of  exchange  applicable
     thereto;

          (vii)  The  right,  if  any,  to  subscribe  for  or to  purchase  any
     securities of the Corporation or any other corporation;

          (viii) The  provisions,  if any, of a sinking fund  applicable to such
     series; and

          (ix) Any other  relative,  participating,  optional  or other  special
     powers, preferences,  rights, qualifications,  limitations, or restrictions
     thereof;  all as  shall be  determined  from  time to time by the  Board of
     Directors and shall be stated in said  resolution or resolutions  providing
     for the issuance of such Preferred Stock (a "Preferred Stock Designation").

     (c) Except as may be provided in this  Certificate of  Incorporation  or by
the Board of Directors in a Preferred  Stock  Designation  or by law, the Common
Stock shall have the  exclusive  right to vote for the election of directors and
for all other purposes,  and holders of Preferred Stock shall not be entitled to
receive notice of any meeting of  shareholders at which they are not entitled to
vote or consent.

     (d) The Corporation shall be entitled to treat the person in whose name any
share of its capital  stock is registered as the owner thereof for all purposes,
and shall not be bound to recognize any equitable or other claim to, or interest
in, such share on the part of any other person,  whether or not the  Corporation
shall have notice thereof, except as expressly provided by applicable law.


                                        2

<PAGE>


                                    ARTICLE V

     (a) The Board of  Directors  shall have the power to remove  directors  for
cause and to suspend directors pending a final  determination  that cause exists
for removal.

     (b)  Subject to the rights of the holders of any class or series of capital
stock  having  a  preference  over the  Common  Stock  as to  dividends  or upon
liquidation to elect  additional  directors  under specific  circumstances,  the
number of directors  which shall  constitute the whole Board of Directors of the
Corporation shall not be more than fifteen,  the exact number of directors to be
determined  from time to time by the Board of Directors in  accordance  with the
By-Laws of the  Corporation.  Any decrease in the number of  directors  will not
shorten the term of any incumbent director.

     (c)  Commencing  with  the  directors  elected  at the  annual  meeting  of
shareholders in 1991, the directors,  other than those who may be elected by the
holders  of any class or series of stock  having a  preference  over the  Common
Stock as to dividends or upon  liquidation,  shall be classified with respect to
the time for which they  severally  hold  office into three  classes,  as nearly
equal in number as possible, as shall be provided in the manner specified in the
By-Laws of the  Corporation.  One class shall be  originally  elected for a term
expiring at the annual meeting of shareholders to be held in 1992, another class
shall be  originally  elected  for a term  expiring  at the  annual  meeting  of
shareholders  to be held in 1993, and another class shall be originally  elected
for a term expiring at the annual  meeting of  shareholders  to be held in 1994,
with the members of each class to hold office until their successors are elected
and qualified.  Commencing at the 1992 annual meeting of the shareholders of the
Corporation,   and  at  each  succeeding  annual  meeting  of  the  shareholders
thereafter,  the successors of the class of directors whose term expires at that
meeting shall be elected by plurality  vote of all votes cast at such meeting to
hold office for a term expiring at the annual  meeting of  stockholders  held in
the third year following the year of their election.

     (d) Notwithstanding anything contained in this Certificate of Incorporation
to the  contrary,  the  affirmative  vote of the  shareholders  holding at least
sixtysix and two-thirds  percent of the outstanding  shares of the Voting Stock,
voting together as a single class,  shall be required to alter,  change,  amend,
repeal, or adopt any provision inconsistent with, this Article Fifth.

     (e) For the purpose of this Article  Fifth,  "Voting  Stock" shall mean the
outstanding  shares  of  capital  stock  of the  Corporation  entitled  to  vote
generally in the election of directors.  In any vote required by or provided for
in this Article Fifth, each share of Voting Stock shall have the number of votes
granted to it generally in the election of directors.


                                        3

<PAGE>


                                   ARTICLE VI

     The number of  directors  constituting  the first Board of Directors of the
Corporation  shall be one and the name of the person serving as such director is
Kenneth I. Sawyer,  whose address is c/o One Ram Ridge Road, Spring Valley,  New
York 10977.

                                   ARTICLE VII

     The sole  incorporator  of the  Corporation  is  Kenneth I.  Sawyer,  whose
address is c/o One Ram Ridge Road Spring Valley, New York 10977.

                                  ARTICLE VIII

     To the  fullest  extent  permitted  by law,  no  director or officer of the
Corporation  shall be personally  liable to the Corporation or its shareholders.
Neither the amendment or repeal of this Article Eighth,  nor the adoption of any
provision of this  Certificate of Incorporation  inconsistent  with this Article
Eighth, shall eliminate or reduce the protection afforded by this Article Eighth
to a  director  or  officer of the  Corporation  in respect to any matter  which
occurred,  or any cause of  action,  suit or claim  which  but for this  Article
Eighth  would  have  accrued  or  arisen,  prior to such  amendment,  repeal  or
adoption.

                                   ARTICLE IX

     (a) The  Corporation  shall,  to the fullest extent  permitted by law, from
time to time,  indemnify  directors  and  officers  of the  Corporation  against
expenses  and  liabilities  incurred  by such  persons  in  connection  with any
proceeding  involving  such  person  as a party or  witness  by  reason  of such
persons' serving as an officer or director of the Corporation.

     (b) The  indemnification and advancement of expenses provided by or granted
pursuant to this  Article  Ninth  shall not exclude any other  rights to which a
person may be entitled under the Certificate of Incorporation,  the By-Laws,  an
agreement, vote of shareholders, or otherwise.

     (c)  Expenses  incurred  by a  director  or officer  in  connection  with a
proceeding  shall be paid in advance of the final  disposition of the proceeding
upon  receipt  of an  undertaking  by or on behalf of such  person to repay such
amount unless it shall  ultimately be determined that such person is entitled to
be  indemnified  as  provided  in  this  Article  Ninth,   the   Certificate  of
Incorporation, the By-Laws, by vote of shareholders, or otherwise.

     (d) The Corporation shall have the power to purchase and maintain insurance
on behalf of any  director  or officer  against  any  expenses  incurred  in any
proceeding  in which  such  person is a party or a witness  and any  liabilities
asserted  against such  person,  whether or not the  Corporation  would have the
power to indemnify such person against such

                                        4

<PAGE>


expenses and liabilities under this Article Ninth or otherwise.  The Corporation
may purchase such insurance from, or such insurance may be reinsured in whole or
in part by, an insurer owned by or otherwise affiliated with the Corporation.

     (e) Neither the amendment or repeal of this Article Ninth, nor the adoption
of any provision of this  Certificate of  Incorporation  inconsistent  with this
Article Ninth,  shall  eliminate or reduce the protection or rights  afforded by
this Article Ninth to any person in respect to any matter which occurred, or any
claim or  proceeding  which but for this  Article  Ninth would have been made or
arisen, prior to such amendment, repeal or adoption.

     IN WITNESS  WHEREOF,  the sole  incorporator,  being over eighteen years of
age,  has signed this  Certificate  of  Incorporation  on this 29th day of July,
1991.

                                              By /s/ Kenneth I. Sawyer
                                                 ----------------------- 
                                                     Kenneth I. Sawyer




                                        5



                                                                     Exhibit 3.2


                   CERTIFICATE OF AMENDMENT TO THE CERTIFICATE
               OF INCORPORATION OF PHARMACEUTICAL RESOURCES, INC.


            (Pursuant to Section (2) 14A:7-2(2) and 14A:9-2(2) of the
              Business Corporation Act of the State of New Jersey)

     ARTICLE ONE: The name of the Corporation is Pharmaceutical  Resources, Inc.
(the "Corporation").

     ARTICLE  TWO:  The  resolutions  adopted by the Board of  Directors  of the
Corporation,  pursuant to subsections 14A:6-10(3) and 14A:7-2(3) of the Business
Corporation Act of the State of New Jersey are as follows:

          WHEREAS,  the Certificate of Incorporation of the Corporation provides
     for a class of shares known as  Preferred  Stock,  consisting  of 6,000,000
     shares; and

          WHEREAS, said Certificate of Incorporation  authorizes issuance of the
     Preferred  Stock from time to time in one or more series and authorizes the
     Board  of  Directors  to  determine  or  alter  the  rights,   preferences,
     privileges and restrictions  granted to or imposed upon any wholly unissued
     series of Preferred  Stock,  to fix the number of shares  constituting  any
     such series, and to determine the designation thereof, or any of them; and

          WHEREAS,  the  Corporation has not issued any shares of such Preferred
     Stock and the Board of Directors of the  Corporation  desires,  pursuant to
     its authority as aforesaid,  to determine and fix the rights,  preferences,
     privileges,  and  restrictions  relating  to the  initial  series  of  said
     Preferred Stock and the number of shares constituting,  and the designation
     of, said series:

          WHEREAS,  in connection  with the  Settlement  Agreement,  dated as of
     March  3,  1992,  in  connection  with  the  Securities  Litigation  of Par
     Pharmaceutical, Inc. ("Par") and the Par Derivative Litigation, Par entered
     into an Indemnity  Agreement,  among Par, Perry Levine and Jeffrey  Levine,
     dated as of March 3, 1992, as amended,  providing  for, among other things,
     the issuance by the  Corporation to the plaintiffs in such  litigation,  on
     behalf of Messrs. Levine and Levine, of 140,000 shares of its common stock,
     par value  $.0l per share  ("Common  Stock"),  and up to 13,333  options to
     purchase the  Corporation's  Common Stock in exchange for the assignment of
     their claims against certain  insurance  companies and their cooperation in
     pursuing claims against such insurers (the "Indemnity Agreement"),  and the
     Corporation wishes to ratify and affirm such Indemnity Agreement;



                                        1

<PAGE>

     NOW, THEREFORE,  BE IT RESOLVED,  that the Board of Directors hereby amends
the  Corporation's  Certificate  of  Incorporation  to  fix  and  determine  the
designation of, the number of shares constituting,  and the rights, preferences,
privileges,  and  restrictions  relating  to, said  initial  series of Preferred
Stock, as follows:

          1. Designation and Number. 2,000,000 shares of Preferred Stock will be
     designated the "Series A Convertible Preferred Stock" (hereinafter referred
     to as the "Series A Preferred  Stock")  with the  rights,  preferences  and
     privileges specified herein.

          2. Voting  Rights.  The holders of Series A Preferred  Stock shall not
     have any voting  rights  except as otherwise  from time to time required by
     law.

          3.  Dividends.  (a) The  holders  of  record  of  shares  of  Series A
     Preferred  Stock at the close of  business  on the first day of  January of
     each year  commencing  after the issue date of the Series A Preferred Stock
     (each such date being hereinafter  referred to as a "Dividend Record Date")
     shall be entitled to receive  cash  dividends  at the per annum rate of the
     Dividend Rate (as defined below) per share,  and no more,  payable annually
     on the first day of February of each year  commencing  after the issue date
     of the Series A  Preferred  Stock  (each a "Dividend  Payment  Date").  The
     "Dividend Rate" with respect to each Dividend  Payment Date shall equal the
     amount,  if any,  of the  Corporation's  Net Income (as  defined  below) in
     excess of  $1,500,000  for its fiscal year  preceding the fiscal year which
     includes  such Dividend  Payment  Date,  divided by the number of shares of
     Series A Preferred Stock then issued and  outstanding;  provided,  however,
     that the Dividend  Rate shall not exceed $.30 per share with respect to any
     Dividend Payment Date. Notwithstanding the foregoing, the Dividend Rate for
     the first  Dividend  Payment Date shall be equal to the Dividend  Rate,  as
     determined  in  the  preceding  sentence,  multiplied  by a  fraction,  the
     numerator  of which is the  number  of days  elapsed  from the entry of the
     final order  pursuant  to the  Settlement  Agreement,  dated as of March 3,
     1992, in connection with the Par Pharmaceutical, Inc. Securities Litigation
     and the Par Pharmaceutical,  Inc. Derivative  Litigation (the "Issue Date")
     to the last day of the Corporation's fiscal year immediately preceding such
     first Dividend Payment Date, inclusive,  and the denominator of which shall
     be 365. For purposes of this  Paragraph  3, "Net Income"  shall mean,  with
     respect to any fiscal year of the Corporation,  the amount shown as the net
     income of the Corporation on the  Consolidated  Statement of Operations and
     Retained Earnings contained

                                        2

<PAGE>

     in the Corporation's Form 10-K, Annual Report filed with the Securities and
     Exchange  Commission for such fiscal year (before any amounts identified as
     extraordinary items thereon).  Dividends upon the Series A Preferred Stock,
     if  any,  shall  be  preferential  and  cumulative  (whether  or not on any
     Dividend  Payment  Date  there  shall be funds of the  Corporation  legally
     available  for the payment of such  dividends),  so that if at any time all
     prior  dividends upon the Series A Preferred  Stock through the immediately
     preceding  Dividend  Payment Date shall not have been paid or set apart for
     payment at the per annum rate specified  above, the amount of the arrearage
     shall be fully paid, but without interest, before any dividends, other than
     dividends  payable  solely in shares of common  stock,  par value  $.01 per
     share (the  "Common  Stock"),  or other  capital  stock of the  Corporation
     ranking junior as to dividends to the Series A Preferred Stock (the "Junior
     Dividend  Stock"),  shall be paid or set apart for payment on any shares of
     Common Stock or Junior Dividend Stock.

          (b) Any  reference to  "distribution"  contained  in this  Paragraph 3
     shall not be deemed to include any  distributions  made in connection  with
     any  liquidation,  dissolution  or winding up of the  Corporation,  whether
     voluntary or involuntary.

          4. Liquidation Preference. In the event of a liquidation,  dissolution
     or winding up of the Corporation,  whether voluntary or involuntary,  after
     payment of the debts and other liabilities of the Corporation,  the holders
     of Series A Preferred  Stock shall be entitled to receive out of the assets
     of the  Corporation,  whether such assets are stated  capital or surplus of
     any nature,  a sum equal to $5.00 per share  together  with any accrued but
     unpaid dividends thereon,  but without interest,  before any payments shall
     be made or any assets  distributed  to the  holders of Common  Stock or any
     other class or series of the Corporation's  capital stock ranking junior as
     to  liquidation  rights  to the  Series  A  Preferred  Stock  (the  "Junior
     Liquidation Stock");  provided,  however,  that such rights shall accrue to
     the  holders  of  Series  A  Preferred  Stock  only in the  event  that the
     Corporation's  payments with respect to the liquidation  preferences of the
     holders  of  capital  stock  of  the  Corporation   ranking  senior  as  to
     liquidation rights to the Series A Preferred Stock (the "Senior Liquidation
     Stock") are fully met. The entire assets of the  Corporation  available for
     distribution  after the liquidation  preferences of the Senior  Liquidation
     Stock are fully met shall be  distributed  ratably among the holders of the
     Series A Preferred Stock and any other

                                        3

<PAGE>

     class or series of the  Corporation's  capital stock which may hereafter be
     created having parity as to liquidation  rights with the Series A Preferred
     Stock, in proportion to the respective  preferential  amounts to which each
     is entitled (but only to the extent of such preferential  amounts).  Except
     as  otherwise  provided in this  Paragraph 4, holders of Series A Preferred
     Stock  shall  not  be  entitled  to any  distribution  in  the  event  of a
     liquidation,  dissolution or winding up of the Corporation. For purposes of
     this Paragraph 4, neither a consolidation or merger of the Corporation with
     one or more other corporations nor a sale or transfer of all or part of the
     Corporation's  assets  for  cash,  securities  or  other  property  will be
     considered  a  liquidation,  dissolution  or winding up of the  Corporation
     unless such a transaction  is entered into for the purpose of  liquidating,
     dissolving or winding up the Corporation.

          5.  Redemption  of  Series  A  Preferred  Stock.  (a)  Subject  to the
     provisions  of this  Paragraph  5, the  Corporation  will,  if  required to
     facilitate a merger or consolidation of the Corporation in which the Common
     Stock  will  no  longer  be  publicly   traded  (other  than  a  merger  or
     consolidation  in which the common stock of the  surviving  corporation  is
     owned  by the  holders  of the  Common  Stock  in  substantially  the  same
     proportions  in which they held such  Common  Stock  before  such merger or
     consolidation),  redeem  all,  but not  less  than  all,  of the  Series  A
     Preferred  Stock at the price  specified  in  subparagraph  (b) below.  The
     Corporation shall provide,  not less than 60 days prior to such redemption,
     notice by first class  mail,  postage  prepaid,  to each holder of Series A
     Preferred  Stock  at  the  address  of  such  holder  on the  books  of the
     Corporation,  of the  Corporation's  election to redeem hereunder and shall
     publish such notice in the national  edition of the Wall Street Journal and
     furnish a copy of such notice to Dow Jones & Company for  inclusion  in its
     news  ticker.  Any such notice by the  Corporation  shall  specify the date
     fixed  for the  redemption,  shall  notify  the  holders  of the  Series  A
     Preferred  Stock of the  conversion  rights  granted  to them  pursuant  to
     subparagraph (e) below, and shall inform such holders of the  consideration
     the holders of the Common  Stock are  entitled  to receive  pursuant to the
     merger or consolidation. Such notice shall be conclusively presumed to have
     been duly  given,  whether  or not the holder of Series A  Preferred  Stock
     actually  receives  such notice;  and failure to give such  notice,  or any
     defect in such  notice,  to any holder of any  shares  shall not affect the
     validity of any notice with respect to the  redemption  of any shares owned
     by any other holder of Series A Preferred Stock.

                                        4

<PAGE>

          (b) Any redemption of the Series A Preferred  Stock in accordance with
     subparagraph  (a) above  shall be for a price equal to $5.00 per share plus
     the amount all accrued and unpaid dividends thereon,  but without interest,
     and no more.

          (c) On or after the date fixed for  redemption as stated in any notice
     delivered by the  Corporation  in accordance  with  subparagraph  (a), each
     holder of the shares called for redemption shall surrender the certificates
     evidencing such shares to the  Corporation at the place  designated in such
     notice and shall  thereupon be entitled to receive  payment of the relevant
     redemption  price in accordance  with the terms of this Paragraph 5. If, on
     the date fixed for  redemption  under any  provision  of this  Paragraph 5,
     funds necessary for the redemption shall be available  therefor,  then such
     shares shall no longer be deemed  outstanding,  the holders  thereof  shall
     cease to be stockholders  with respect thereto,  and all rights  whatsoever
     with respect to such shares (except the right of the holders to receive the
     relevant   redemption  price  without  interest  upon  surrender  of  their
     certificates  thereof) shall terminate.  Shares of Series A Preferred Stock
     redeemed by the  Corporation  will be restored to the status of  authorized
     but unissued shares of Preferred  Stock,  without  designation as to class,
     and  thereafter  may be  issued,  but not as shares  of Series A  Preferred
     Stock.

          (d) The shares of Series A Preferred Stock shall not be subject to the
     operation of a purchase, retirement or sinking fund.

          (e)  Notwithstanding  any other  provision of this  Paragraph 5 to the
     contrary,  each holder of record of any shares of Series A Preferred  Stock
     shall be  entitled  to convert  all or a portion of such shares into Common
     Stock,  in  accordance  with and subject to the  provisions  of Paragraph 6
     hereof,  at any time prior to the date fixed for  redemption  specified  in
     accordance with subparagraph (a) hereof.

          (f)  Nothing  contained  herein to the  contrary  shall  preclude  the
     Corporation   from  acquiring   shares  of  Series  A  Preferred  Stock  in
     open-market transactions in compliance with any applicable federal or state
     securities laws.

          6. Conversion.  (a) Each share of Series A Preferred Stock may, at the
     option of the holder of record  thereof,  at any time,  be  converted  into
     shares of Common Stock at the conversion rate in effect at the time

                                        5

<PAGE>

     of such conversion.  Each share of Series A Preferred Stock shall initially
     be  convertible  into one share of Common  Stock,  subject to adjustment as
     provided in subparagraph (f) hereof.  The Corporation shall not be required
     to issue fractional  shares of Common Stock upon any conversion,  but shall
     pay in lieu  thereof,  as soon as  practicable  after the date the Series A
     Preferred Stock is surrendered for conversion  pursuant to subparagraph (d)
     hereof, an amount in cash equal to the same fraction of the market value of
     a full share of Common Stock. For such purpose, the market value of a share
     of Common  Stock shall be the last  recorded  sale price of such a share on
     the primary exchange on which the Common Stock is traded if such shares are
     listed  on one or more  securities  exchanges,  or if the  shares of Common
     Stock are not listed on one or more securities exchanges, the last recorded
     sale  price of a share of Common  Stock if such  shares  are  quoted on the
     National Market System of the National  Association of Securities  Dealers'
     Automated Quotation System ("NASDAQ"), or if the shares of Common Stock are
     not so listed or quoted, the closing bid price as reported by NASDAQ (other
     than the National Market System), on the day immediately preceding the date
     upon which such shares are surrendered for conversion. All shares of Common
     Stock  which may be issued  upon the  conversion  of the Series A Preferred
     Stock will, upon issuance, be fully paid and nonassessable.

          (b)  Subsequent  to the  third  anniversary  of the  Issue  Date,  the
     Corporation  may, at its option,  which option may be exercised on any date
     on which  the  market  value  of a share of  Common  Stock  (as  determined
     pursuant to  subparagraph  (a)) shall have been at least $10.00 on each day
     during the  twenty-day  period ending on the date such option is exercised,
     require all of the shares of Series A Preferred  Stock to be converted into
     Common Stock. The Corporation  shall exercise the conversion option granted
     pursuant to this  subparagraph (b) by publishing a notice to such effect in
     the national  edition of the Wall Street  Journal and  furnishing a copy of
     such notice to Dow Jones & Company for inclusion in its news ticker. On the
     date of such publication (the "Effective Date"),  each outstanding share of
     Series A  Preferred  Stock shall  automatically,  without any action on the
     part of the holders thereof, be converted into a number of shares of Common
     Stock  equal to the  product of (i) 110% and (ii) the  conversion  rate (as
     determined  pursuant to subparagraph  (f)) in effect on the Effective Date.
     The  Corporation  shall not be required to issue any  fractional  shares of
     Common Stock upon any  conversion  pursuant to this  subparagraph  (b), but
     shall pay in lieu thereof, as soon as practicable after the Effective Date,

                                        6

<PAGE>

     an amount in cash equal to the same  fraction of the market value of a full
     share of Common Stock (as determined  pursuant to subparagraph  (a)) on the
     Effective  Date. The Corporation  shall,  as soon as practicable  after the
     Effective Date,  issue each holder of shares of Series A Preferred Stock, a
     certificate representing the shares of Common Stock issuable to such holder
     upon the conversion of such holder's Series A Preferred Stock.

          (c) As  promptly  as  practicable  after any  conversion  of shares of
     Series  A  Preferred  Stock  pursuant  to  subparagraph  (a)  or  (b),  the
     Corporation  shall pay,  with  respect to each share of Series A  Preferred
     Stock which has been so converted,  to the holder thereof,  the amount,  if
     any,  of all  accrued  and  unpaid  dividends  with  respect  to such share
     (including  any  dividends   declared  after  the  Effective  Date  or,  if
     applicable,  the  Conversion  Date, as defined in  subparagraph  (e) below,
     having a record date prior to such Effective Date or Conversion Date). Such
     amount shall be payable,  at the option of the Corporation,  either in cash
     or in  shares of  Common  Stock  valued at the  market  value  thereof  (as
     determined pursuant to subparagraph (a)) on the date such payment is made.

          (d)  In  order  to  exercise  the  conversion   rights  set  forth  in
     subparagraph  (a), a holder of record of shares of Series A Preferred Stock
     shall surrender the certificate or certificates  representing  such shares,
     duly endorsed to the Corporation or in blank, signature guaranteed,  at the
     office of the Corporation's  transfer agent, or at such other office as the
     Corporation may designate, and shall give written notice to the Corporation
     that such holder elects to convert the Series A Preferred Stock or, subject
     to the provisions of  subparagraph  (g) below, a specified  portion thereof
     and the name or names in which he wishes the  certificate  or  certificates
     for shares of Common Stock to be issued.  As promptly as practicable  after
     receipt  of such  notice,  surrender  of the  certificate  or  certificates
     representing  the Series A Preferred  Stock,  receipt of properly  executed
     instruments of transfer  satisfactory to the  Corporation,  if requested by
     the  Corporation,  and  payment  by the holder of any  applicable  transfer
     taxes,  the  Corporation  shall  issue and  deliver  (i) a  certificate  or
     certificates  for the number of full shares of Common Stock  issuable  upon
     conversion,  in the name or names and to the address or addresses specified
     in the notice,  and (ii) cash in respect of any fractional  shares,  as set
     forth in  subparagraph  (a),  above. In case of the conversion of less than
     the entire number of shares of Series A Preferred Stock  represented by the
     certificate

                                        7

<PAGE>

     or   certificates   surrendered  in  accordance   with  the  provisions  of
     subparagraph  (g) below,  the  Corporation  shall cancel the certificate or
     certificates upon the surrender thereof and shall execute and deliver a new
     certificate  for Series A Preferred  Stock for the balance of the number of
     shares evidenced by such certificate or certificates not so converted. Each
     notice of election to convert  pursuant hereto shall  constitute a contract
     between  the  holder  of  shares  of  Series  A  Preferred  Stock  and  the
     Corporation, whereby the holder of such shares shall be deemed to subscribe
     for the amount of Common  Stock which he shall be entitled to receive  upon
     such  conversion,  and  to  release  the  Corporation  from  all  liability
     thereunder,  and whereby the Corporation  shall be deemed to agree that the
     amount  paid to it for such  shares,  together  with the  surrender  of the
     certificate or certificates  therefor and the  extinguishment  of liability
     thereon,  shall  constitute  full payment of such  subscription  for Common
     Stock to be issued upon such conversion.

          (e) A conversion  pursuant to subparagraph (a) shall be deemed to have
     been effected at the close of business on the date on which the certificate
     or certificates of Series A Preferred Stock shall have been surrendered and
     notice  shall  have  been  given  to the  Corporation  in  accordance  with
     subparagraph (d) (the "Conversion Date"). The holders of shares of Series A
     Preferred Stock whose shares are converted  pursuant to subparagraph (a) or
     (b) shall cease to be  shareholders  with respect thereto on the Conversion
     Date or the  Effective  Date  (whichever  is  applicable)  and  all  rights
     whatsoever with respect to such shares (except the rights of the holders to
     receive  shares of Common Stock and cash in respect of  fractional  shares)
     shall terminate, and the person or persons in whose name any certificate or
     certificates  for Common Stock are issuable upon such  conversion  shall be
     deemed to have  become  the  holder of  record  of the  shares  represented
     thereby  on  such  date.  On the  Conversion  Date  or the  Effective  Date
     (whichever  is  applicable),  all shares of Series A Preferred  Stock which
     shall have been  surrendered for conversion or  automatically  converted as
     herein provided shall no longer be deemed outstanding. Any shares of Series
     A  Preferred  Stock  so  converted  shall  be  restored  to the  status  of
     authorized but unissued shares of Preferred Stock without designation as to
     class,  and  may be  issued  thereafter,  but not as  shares  of  Series  A
     Preferred Stock.

          (f) The  conversion  rate shall be subject to adjustment  from time to
     time as follows:


                                        8

<PAGE>



               (i) If the  Corporation  shall,  at any time or from time to time
          while shares of Series A Preferred Stock shall be outstanding, (1) pay
          a  dividend  on  Common  Stock in  Common  Stock,  (2)  subdivide  its
          outstanding shares of Common Stock into a greater number of shares, or
          (3)  combine  its  outstanding  shares of Common  Stock into a smaller
          number of shares, then the number of shares of Common Stock into which
          shares  of  Series  A  Preferred  Stock  may  be  converted  shall  be
          proportionately  increased or  decreased,  as the case may be, and the
          conversion rate in effect  immediately  prior to the record date fixed
          for the  determination of shareholders  entitled to such dividend,  or
          immediately  prior to such subdivision or conversion,  as the case may
          be, shall be correspondingly  increased or decreased,  as the case may
          be, to produce such results (taking into account fractional  interests
          in shares of the Common  Stock to the nearest  thousandth  of a share,
          and for the purposes of the  foregoing,  considering  such  fractional
          interests as outstanding fractional shares). Similar adjustments shall
          be made if any of the events  described  hereinabove  shall thereafter
          occur or reoccur.  An  adjustment  made  pursuant  hereto shall become
          effective immediately after the record date, in the case of a dividend
          payable in Common Stock and  immediately  after the effective date, in
          the case of a subdivision or combination thereof.

               (ii) If,  at any time or from  time to time  while  shares of the
          Series A Preferred Stock shall be outstanding,  the outstanding shares
          of Common Stock are changed into,  in whole or part, a different  kind
          or class of stock (or other securities representing, or payable in, or
          convertible  into,  or  entitling  the holder to purchase or subscribe
          for,  stock of any  class)  as a  result  of a  reclassification,  the
          Corporation  shall  execute  and  deliver to the  holders of record of
          shares of Series A Preferred  Stock,  agreements  providing  that such
          holders shall have the right  immediately  thereafter to convert their
          shares of Series A Preferred  Stock into the kind and number or amount
          of  shares  of stock  and  other  securities  and  property  which are
          receivable  upon such  reclassification  by a holder of the  number of
          shares of Common  Stock into which such  shares of Series A  Preferred
          Stock might have been converted  immediately prior to such change, and
          which new  shares  of  stock,  securities  and  other  property  shall
          thereafter be subject to adjustment, as nearly as practicable,  in the
          same manner as provided herein.

               (iii)  Whenever any adjustment is made in the number of shares of
          Common  Stock into  which  shares of Series A  Preferred  Stock may be
          converted pursuant to any

                                        9

<PAGE>

          of the  foregoing  provisions,  the  Corporation  shall,  as  soon  as
          reasonably practicable thereafter,  prepare a written statement signed
          by an officer of the  Corporation,  setting forth the adjusted rate of
          conversion,  determined as provided herein, and, in reasonable detail,
          the fact requiring such  adjustment.  The Corporation  shall mail such
          statement  to all  holders  of record of shares of Series A  Preferred
          Stock then outstanding at their respective  addresses appearing on the
          stock records of the Corporation.

               (iv) If the  Corporation  shall at any time merge or  consolidate
          with or into another corporation,  each holder of shares of the Series
          A Preferred Stock then outstanding shall, subject to the provisions of
          subparagraph  5(a),  receive  an  equivalent  preferred  stock  in the
          surviving company with the same or equivalent features, yield, parity,
          conversion  rights, and protections as those of the Series A Preferred
          Stock.  Alternatively,  each  holder of  shares of Series A  Preferred
          Stock may, immediately prior to such merger or consolidation,  convert
          such shares into Common Stock in accordance with Paragraph 6 hereof.

          (g) The  conversion  of shares of the  Series A  Preferred  Stock into
     shares of Common Stock pursuant to subparagraph (a) must be made in minimum
     multiples of 100 shares by the holder of record  thereof,  or, if less than
     100 shares shall be owned of record by such holder, for all the outstanding
     shares then held by him. The  Corporation  shall be under no  obligation to
     convert into Common Stock, any shares of Series A Preferred Stock which are
     not  surrendered  to it in whole  multiples of 100 shares,  or which do not
     constitute  all the  shares  of such  stock  then  held  of  record  by the
     surrendering shareholder.

          (h) The Corporation  shall at all times reserve and keep available out
     of  authorized  Common  Stock,  solely  for the  purpose of  effecting  the
     conversion  of the Series A Preferred  Stock,  the full number of shares of
     Common Stock  issuable upon  conversion of all Series A Preferred  Stock at
     any time outstanding.

          7.  Pre-emptive  Rights.  The  holders of shares of Series A Preferred
     Stock shall have no pre-emptive rights.

          8.   Mutilated  or  Missing   Certificate.   In  case  a   certificate
     representing  Series A Preferred Stock shall be mutilated,  lost, stolen or
     destroyed,  the  Corporation  shall  issue  and  deliver  in  lieu  of  and
     substitution for

                                       10

<PAGE>

     the certificate so mutilated,  lost, stolen or destroyed, a new certificate
     of like tenor and  representing an equivalent  number of shares of Series A
     Preferred Stock; but only upon receipt of evidence reasonably  satisfactory
     to the Corporation of such  mutilation,  loss, theft or destruction of such
     certificate  and  indemnity  with surety,  if  requested,  also  reasonably
     satisfactory to the Corporation.  An applicant for a substitute certificate
     shall also comply with such other reasonable regulations and pay such other
     reasonable charges as the Corporation may prescribe.

          FURTHER RES0LVED, that the appropriate officers of the Corporation be,
     and they hereby are,  authorized  and  directed  to file a  certificate  of
     amendment to the Certificate of  Incorporation,  amending the provisions of
     Article  IV(b)  of  said   Certificate  of  Incorporation  to  reflect  the
     designation  and  number  of shares  of  Series A  Preferred  Stock and the
     relative rights,  preferences and limitations  thereof, as set forth in the
     foregoing Resolution.

          ARTICLE THREE:  The  Resolutions  set forth in Article Two hereof were
duly  adopted by the Board of  Directors  of the  Corporation,  by a  telephonic
meeting,  pursuant to  subsections  14A:6-10(3)  and  14A:7-2(3) of the Business
Corporation Act of the State of New Jersey on July 29, 1992.

          ARTICLE FOUR: Article IV(b) of the Certificate of Incorporation of the
Corporation  is hereby amended so that the  designation  and number of shares of
Series A Preferred  Stock and the relative  rights,  preferences and limitations
thereof be as set forth in the resolutions contained in Article Two hereof.

          IN WITNESS  WHEREOF,  I have executed this Certificate of Amendment to
the Certificate of  Incorporation of the Corporation and do affirm the foregoing
as true, under the penalties of perjury, this third day of August, 1992.





                                                 /s/ Richard J. Nadler
                                                 ------------------------------
                                                 Richard J. Nadler
                                                   Vice President-Finance and
                                                   Administrator




                                       11

                                                                     Exhibit 3.3


                         CERTIFICATE OF AMENDMENT TO THE

                         CERTIFICATE OF INCORPORATION OF

                         PHARMACEUTICAL RESOURCES, INC.



To:      The Secretary of State
         State of New Jersey

         Pursuant  to  the   provisions  of  Section   14A:9-2(4)   and  Section
14A:9-4(3),  Corporations,  General, of the New Jersey Statutes, the undersigned
Corporation  executes the following  Certificate of Amendment to its Certificate
of Incorporation:

     1. The name of the Corporation is Pharmaceutical Resources, Inc.

     2. The following amendment to the Certificate of Incorporation was approved
by  the  directors  and  thereafter  duly  adopted  by the  shareholders  of the
Corporation on the 26th day of June, 1998:

     Resolved, that Article IV(a) of the Certificate of Incorporation be amended
to read as follows:

                  "(a) The Corporation is authorized to issue 90,000,000  shares
         of capital stock which shall be designated the Common Stock,  par value
         $.01 per share. Each holder of Common Stock of the Corporation entitled
         to vote shall have one vote for each share held thereof."

     3. The number of shares entitled to vote upon the amendment was 18,890,153.

     4. The  number  of shares  voting  for and  against  such  amendment  is as
follows:

Number of Shares Voting For Amendment  Number of Shares Voting Against Amendment
- -------------------------------------  -----------------------------------------
        11,368,619                                   5,424,154

Dated this 26 day of June, 1998.


                                                  PHARMACEUTICAL RESOURCES, INC.


                                                  By /s/ Kenneth I. Sawyer
                                                    ----------------------------
                                                         Kenneth I. Sawyer
                                                         Chairman and Chief 
                                                         Executive Officer




                                                                     Exhibit 3.4


                                   BY-LAWS OF

                         PHARMACEUTICAL RESOURCES, INC.


                               ARTICLE I---OFFICES

         1. Registered  Office and Agent.  The Registered  Office and Registered
Agent of the  Corporation in the State of New Jersey shall be as determined from
time to time by the Board of Directors of the Corporation.

         2. Principal Place of Business.  The principal place of business of the
Corporation is One Ram Ridge Road, Spring Valley, New York 10977.

         3. Other Places of Business. Branches or subordinate places of business
or offices  may be  established  at any time by the Board at any place or places
where the Corporation is qualified to do business.

                            ARTICLE II---SHAREHOLDERS

         1. Annual  Meetings.  The annual meeting of shareholders  shall be held
upon not less  than ten nor more than  sixty  days  written  notice of the time,
place and  purpose of the  meeting at 11:00 a.m. on the 15th day of the month of
November of each year at the  principal  office of the  Corporation,  or at such
other time and place as shall be specified in the notice of meeting, in order to
elect  directors  and  transact  such other  business  as shall come  before the
meeting. If that date is a legal holiday,  the meeting shall be held at the same
hour on the next succeeding business day.

         2. Special  Meetings.  A special meeting of shareholders  may be called
for any purpose by the president or the Board.  A special  meeting shall be held
upon not less than ten or more than sixty days written notice of the time, place
and purpose of the meeting.

         3. Action Without  Meeting.  The shareholders may act without a meeting
if, prior or subsequent  to such action,  each  shareholder  who would have been
entitled to vote upon such action shall consent in writing to such action.  Such
consent shall be filed in the minute book.

         4.  Quorum.  The  presence  at a  meeting  in person or by proxy of the
holders of shares  entitled to cast a majority of the votes shall  constitute  a
quorum.

         5. Voting.  Except as otherwise  provided by statute or the Certificate
of Incorporation, at all meetings of the shareholders, every registered owner of
shares  entitled  to vote may vote in person or by proxy and shall have one vote
for each such share  standing  in his name on the books of the  Company.  At all
elections of directors,  the voting shall be by ballot.  The Board of Directors,
or, if the Board shall not have made the appointment,  the chairman presiding at
any meeting of shareholders, shall have the power to appoint two or more persons
to act as inspectors or tellers, to


<PAGE>

receive, canvass, and report the votes cast by the shareholders at such meeting;
but no candidate  for the office of director  shall be appointed as inspector or
teller at any meeting for the election of directors.

         6. Conduct of Meeting.  The chairman or, in his absence,  the president
or a vice president shall preside at all meetings of the shareholders;  and, the
secretary,  or in his absence,  the person whom the chairman or, in his absence,
such  president or vice  president  may  appoint,  shall act as secretary of the
meeting and keep the minutes thereof.


                        ARTICLE III---BOARD OF DIRECTORS

         1.  Number and Term of Office.  Subject to the rights of the holders of
any class or series of capital  stock having a preference  over the common stock
of the Company as to dividends or upon liquidation to elect additional directors
under specific circumstances, the number of directors which shall constitute the
whole Board of  Directors  of the  Corporation  shall not be less than three nor
more than fifteen  directors.  Subject to the  foregoing,  the actual  number of
directors shall be determined  from time to time by the Board of Directors.  The
directors,  other than  those who may be elected by the  holders of any class or
series of stock  having a  preference  over the common  stock as to dividends or
upon  liquidation,  shall be classified  with respect to the time for which they
severally hold office into three classes, as nearly equal in number as possible,
with the term of office of the first  class to expire at the  annual  meeting of
shareholders  to be held in 1994,  the term of  office  of the  second  class to
expire at the annual  meeting of  shareholders  to be held in 1992,  and term of
office of the third class to expire at the annual meeting of  shareholders to be
held in  1993,  with  the  members  of each  class to hold  office  until  their
successors are elected and  qualified.  Commencing at the 1992 annual meeting of
the  shareholders of the Corporation,  and at each succeeding  annual meeting of
the shareholders thereafter, the successors of the class of directors whose term
expires at that meeting shall be elected by plurality  vote of all votes cast at
such  meeting  to hold  office  for a term  expiring  at the  annual  meeting of
shareholders in the third year following the year of their  election,  with each
director to hold office  until his  successor  shall have been duly  elected and
qualified.

         2.  Regular  Meetings.  A regular  meeting  of the Board  shall be held
without  notice and  immediately  following  and at the same place as the annual
shareholders'  meeting for the purposes of electing officers and conducting such
other business as may come before the meeting.  The Board,  by  resolution,  may
provide for additional regular meetings which may be held without notice, except
to members not present at the time of the adoption of the resolution.

         3. Special  Meetings.  A special  meeting of the Board may be called at
any time by the president or by three  directors  for any purpose.  Such meeting
shall be held upon two days' notice if given  orally  (either by telephone or in
person),  by telefacsimile or by overnight courier,  or upon not less than three
days'  notice if given by  depositing  the  notice in the United  States  mails,
postage  prepaid.  Such notice shall  specify the time and place of the meeting,
which may be by means of


                                       2
<PAGE>

conference,  telephone  or any  means  of  communication  by which  all  persons
participating in the meeting are able to hear each other.

         4.  Action  Without  Meeting.  The Board may act  without a meeting if,
prior or  subsequent  to such action,  each member of the Board shall consent in
writing to such action.  Such written  consent or consents shall be filed in the
minute book.

         5. Quorum. A majority of the entire Board of Directors shall constitute
a quorum for the transaction of business.

         6.  Vacancies in Board of  Directors.  Except as otherwise  provided in
this Section,  any vacancy on the Board,  or a vacancy  caused by an increase in
the  number  of  directors,  may be filled by the  affirmative  majority  of the
remaining  directors or by a sole  remaining  director,  even though less than a
quorum of the  Board.  The sole and  exclusive  manner of filling a vacancy of a
"Company  Designee"  (as such term is defined in the Stock  Purchase  Agreement,
dated  March 25,  1998,  between  the  Corporation  and Lipha  Americas,  Inc.),
including a successor to a Company Designee, shall be by an affirmative majority
of the remaining  Company  Designees or any  successors  or by a sole  remaining
Company Designee or any successor,  even though less than a quorum of the Board.
This  Section  shall not be amended or  repealed,  except  with the consent of a
majority of the Company Designees or their successors.

         7. Executive  Committee.  There shall be an executive  committee of the
Board of Directors which shall consist of not more than three  directors,  which
shall  have the power and  authority  to manage  the  day-to-day  affairs of the
Corporation  without the necessity of a meeting of the whole Board of Directors,
or approval of said Board.

         8. Conduct of Meetings:  Voting. At meetings of the Board of Directors,
the chairman or, in his absence,  the president or a designated  vice  president
shall preside.  The act of the majority of the directors  present at any meeting
in which a quorum is present shall be the act of the Board of Directors.  At any
meeting at which  every  director  shall be  present,  even  though  without any
notice, any business may be transacted.

         9.  Compensation.  The directors  shall receive such  compensation  for
their  services as directors  and as members of any  committee  appointed by the
Board as may be  prescribed by the Board of Directors and shall be reimbursed by
the Company for ordinary and reasonable  expenses incurred in the performance of
their duties.

         10.  Manifestation of Dissent. A director of the Company who is present
at a meeting of the Board of Directors at which action on any  corporate  matter
is taken  shall be  presumed to have  assented  to the action  taken  unless his
dissent  shall be entered in the  minutes of the meeting or unless he shall file
his written dissent to such action.

                                       3


<PAGE>

                         ARTICLE IV---WAIVERS OF NOTICE

         Any  notice   required  by  these  By-Laws,   by  the   Certificate  of
Incorporation,  or by the New Jersey  Business  Corporation Act may be waived in
writing by any person entitled to notice.  The waiver or waivers may be executed
either  before or after the event with respect to which  notice is waived.  Each
director or shareholder  attending a meeting  without  protesting,  prior to its
conclusion,  the lack of  proper  notice  shall be deemed  conclusively  to have
waived notice of the meeting.


                              ARTICLE V---OFFICERS

         1.  Election.  At its regular  meeting  following the annual meeting of
shareholders,  the Board shall elect a president, a treasurer, a secretary,  and
it may elect such other officers,  including a chairman of the Board, and one or
more vice presidents,  assistant secretaries and assistant treasurers,  who will
have such duties and authority as  determined by the Board.  One person may hold
two or more offices.

         2. Duties and Authority of President.  The president shall be the chief
executive  officer of the  Corporation.  Subject  only to the  authority  of the
Board,  he shall have general charge and  supervision  over, and  responsibility
for, the business and affairs of the Corporation.  Unless otherwise  directed by
the Board,  all other officers shall be subject to the authority and supervision
of the  president.  The  president may enter into and execute in the name of the
Corporation  contracts or other instruments in the regular course of business or
contracts or other  instruments  not in the regular course of business which are
authorized,  either generally or  specifically,  by the Board. He shall have the
general  powers  and  duties  of  management  usually  vested  in the  office of
president of a corporation.

         3. Duties and Authority of Vice  President.  Each vice president  shall
perform  such  duties  and  have  such  authority  as from  time to time  may be
delegated to him by the president or by the Board.

         4. Duties and  Authority of  Treasurer.  The  treasurer  shall have the
custody of the funds and securities of the  Corporation  and shall keep or cause
to be kept regular books of account for the  Corporation.  The  treasurer  shall
perform  such other  duties and possess such other powers as are incident to the
office or as shall be assigned by the president or the Board.

         5. Duties and Authority of Secretary. The secretary shall cause notices
of all meetings to be served as  prescribed  in these  By-Laws and shall keep or
cause to be kept the minutes of all meetings of the  shareholders and the Board.
The secretary  shall have charge of the seal of the  Corporation.  The secretary
shall perform such other duties and possess such other powers as are incident to
the office or as shall be assigned by the president or the Board.


                                       4
<PAGE>

        6.  Vacancies.  In case any office  shall become  vacant,  the Board of
Directors shall have the power to fill such vacancies. In case of the absence or
disability  of any officer,  the Board of  Directors  may delegate the powers or
duties of any officer to another officer or a director for the time being.

         7. Exercise of Rights as Shareholder.  Unless otherwise  ordered by the
Board of Directors, the president, or a vice president thereunto duly authorized
by the  president,  shall  have  full  power  and  authority  on  behalf  of the
Corporation  to  attend  and to  vote  at any  meeting  of  shareholders  of any
corporation in which this Corporation may hold stock, and may exercise on behalf
of this  Corporation  any and  all of the  rights  and  powers  incident  to the
ownership of such stock at any such meeting,  and shall have power and authority
to execute and deliver  proxies and  consents on behalf of this  Corporation  in
connection  with the  exercise  by this  Corporation  of the  rights  and powers
incident to the ownership of such stock.  The Board of  Directors,  from time to
time, may confer like powers upon any other person or persons.


                           ARTICLE VI---CAPITAL STOCK

         1. Stock Certificates.  Certificates for stock of the Corporation shall
be in such form as the Board of Directors  may from time to time  prescribe  and
shall be signed by the president or a vice  president and by the treasurer or an
assistant treasurer or the secretary or an assistant secretary.  If certificates
are  signed by a  transfer  agent,  acting in  behalf of the  Corporation  and a
registrar, the signatures of the officers of the Corporation may be facsimile.

         2.  Transfer  Agent.  The Board of  Directors  shall  have the power to
appoint  one or  more  transfer  agents  and  registrars  for the  transfer  and
registration of  certificates of stock of any class,  and may require that stock
certificates  be  countersigned  and  registered by one or more of such transfer
agents and registrars.

         3. Transfer of Stock.  Shares of capital stock of the Corporation shall
be  transferable  on the books of the  Corporation  only by the holder of record
thereof  in  person  or  by a  duly  authorized  attorney,  upon  surrender  and
cancellation of certificates for a like number of shares.

         4. Lost Certificates.  In case any certificate for the capital stock of
the Corporation shall be lost, stolen, or destroyed, the Corporation may require
such proof of the fact and such  indemnity to be given to it and to its transfer
agent and registrar, if any, as shall be deemed necessary and advisable by it.

         5.  Holder of Record.  The  Corporation  shall be entitled to treat the
holder of record of any share or shares of stock as the  holder  thereof in fact
and shall not be bound to recognize  any equitable or other claim to or interest
in such  shares on the part of any other  person,  whether  or not it shall have
express or other notice thereof, except as otherwise expressly provided by law.


                                       5
<PAGE>

         6. Closing of Books.  The Board of Directors  shall have power to close
the stock transfer  books of the  Corporation  for a period not exceeding  fifty
days preceding the date of any meeting of  shareholders  or the date for payment
of any dividend or the date for  allotment of rights or the date when any change
or conversion or exchange of capital stock shall go into effect;  provided that,
in lieu of closing the stock transfer  books,  the Board of Directors may fix in
advance a date,  not exceeding  fifty days  preceding the date of any meeting of
shareholders,  or the date for payment of any dividend or the date for allotment
of rights,  or the date when any change or  conversion  or  exchange  of capital
stock  shall  go  into  effect,  as a  record  date  for  the  determination  of
shareholders  entitled to notice of and to vote at any such meeting, or entitled
to receive payment of any such dividends, or any such allotment of rights, or to
exercise  the rights in respect of any such  change,  conversion  or exchange of
capital stock, and in such case only shareholders of record on the date so fixed
shall be entitled to such notice of and to vote at such  meeting,  or to receive
payment of such dividend,  or allotment of rights,  or exercise such rights,  as
the case may be, and  notwithstanding  any transfer of any stock on the books of
the Corporation after any such record date fixed as herein provided.

             ARTICLE VII---INDEMNIFICATION OF DIRECTORS AND OFFICERS

         1. The Corporation  shall,  to the fullest  extent,  from time to time,
permitted by law,  indemnify  directors and officers of the Corporation  against
expenses  and  liabilities  incurred  by such  persons  in  connection  with any
proceeding  involving  such  person  as a party or  witness  by  reason  of such
person's serving as an officer or director of the Corporation.

         2. The  indemnification  and  advancement  of  expenses  provided by or
granted pursuant to this Article VII shall not exclude any other rights to which
a person may be entitled under the Certificate of Incorporation,  these By-Laws,
an agreement, vote of shareholders, or otherwise.

         3.  Expenses  incurred  by a director or officer in  connection  with a
proceeding  shall be paid in advance of the final  disposition of the proceeding
upon  receipt  of an  undertaking  by or on behalf of such  person to repay such
amount unless it shall  ultimately be determined that such person is entitled to
be   indemnified   as  provided  in  this  Article  VII,  the   Certificate   of
Incorporation, these By-Laws, by vote of shareholders, or otherwise.

         4. The  Corporation  shall  have the  power to  purchase  and  maintain
insurance on behalf of any director or officer against any expenses  incurred in
any  proceeding  in which such person is a party or witness and any  liabilities
asserted  against such  person,  whether or not the  Corporation  would have the
power to indemnify such person against such expenses and liabilities  under this
Article VII or otherwise.  The  Corporation may purchase such insurance from, or
such  insurance  may be reinsured in whole or in part by, an insurer owned by or
otherwise affiliated with the Corporation.

         5.  Neither  the  amendment  or repeal  of this  Article  VII,  nor the
adoption of any provision of the Certificate of Incorporation  inconsistent with
this Article VII, shall eliminate or reduce the protection or rights afforded by
this Article VII to any person in respect to any matter which

                                       6
<PAGE>

occurred,  or any claim or proceeding  which but for this Article VII would have
been made or arisen, prior to such amendment, repeal, or adoption.

             ARTICLE VIII---QUALIFICATIONS OF DIRECTORS AND OFFICERS

        1.  Definitions.  For purposes of this Article VIII, the following terms
shall have the following meanings:

              (a)   "Affiliate",   "Associate"  and  "control"  shall  have  the
         respective meanings ascribed to such terms in Rule 12b-2 of the General
         Rules and  Regulations  under the Securities  Exchange Act of 1934 (the
         "Exchange Act").

              (b)  "Principal  Party"  shall  mean any  person or entity  which,
         pursuant to an agreement, understanding or otherwise, is represented by
         another person.

              (c)  "Regulatory   Approvals"   shall  mean  any  governmental  or
         regulatory approvals, agreements, permits, licenses or registrations of
         the Corporation or any of its subsidiaries necessary for the conduct of
         their business.

         2.  Qualifications.  No person  shall serve as a director or officer of
the  Corporation  or shall be elected or appointed to serve in any such capacity
if, in the good faith judgment of the Board of Directors,  there is a reasonable
likelihood  that service by such person as a director or officer  (whether based
on the  qualifications of such person or on the qualifications of any Affiliate,
Associate or Principal  Party of such person) will result in (i) the loss of any
existing  Regulatory  Approvals,  (ii) the inability of the  Corporation  or any
subsidiary  to renew any  Regulatory  Approvals  or (iii) the  inability  of the
Corporation or any subsidiary to obtain new Regulatory Approvals.

         3.  Removal.  Any director  specified in Section 2 of this ARTICLE VIII
may be removed, for cause, at any time, by the affirmative vote of a majority of
the  directors  present at any  meeting in which a quorum is  present.  Any such
affected director shall be counted for purposes of a quorum at any such meeting,
but shall not be counted  for  purposes  of  determining  the vote of  directors
present  at such  meeting.  Any  vacancy  caused by the  removal  of a  director
pursuant to this Section 3 may be filled by the affirmative vote of the majority
of the remaining directors then in office.

         4.  Determination of the Board of Directors.  Any  determination by the
Board of Directors with respect to the  qualifications of any person to serve as
a director or officer of the Corporation  pursuant to this ARTICLE VIII, whether
based  on  the  qualifications  of  such  person  or the  qualifications  of any
Affiliate,  Associate or  Principal  Party of such  person,  shall,  among other
things,  take into  account  the  involvement  of any of such  persons  in legal
actions  or  proceedings  or  governmental  investigations.  Persons,  or  their
Affiliates, Associates or Principal Parties, covered by Section 2 shall include,
but shall not be limited to, any (i)  directors,  officers or  employees  of the
Corporation  or its  subsidiaries  whose  actions  the  Board of  Directors  has
determined  in good  faith  were  detrimental  to the  maintenance,  renewal  or
acquisition of the Regulatory Approvals, whether

                                       7
<PAGE>

they  resigned or were  dismissed  for cause,  (ii) persons or entities who were
convicted in criminal  proceedings or are named  defendants of pending  criminal
proceedings  (excluding minor offenses) relating to the pharmaceutical  industry
or any other  business  regulated  by any Federal,  state or local  governmental
agency or (iii)  persons or  entities  who are  subject to any order,  judgment,
decree or debarment,  not subsequently  reversed,  suspended or vacated,  of any
court  of  competent   jurisdiction  or  governmental  or  regulatory  authority
permanently  or  temporarily  enjoining  them from,  or otherwise  limiting such
person or entity from engaging in, any type of business practice relating to the
pharmaceutical industry or any other business regulated by any Federal, state or
local governmental agency.

          ARTICLE IX---AMENDMENTS TO AND EFFECT OF BY-LAWS; FISCAL YEAR

         1.  Force and  Effect of  By-Laws.  These  By-Laws  are  subject to the
provisions  of the New Jersey  Business  Corporation  Act and the  Corporation's
Certificate  of  Incorporation,  as it may be amended from time to time.  If any
provision in these By-Laws is  inconsistent  with a provision in that Act or the
Certificate of  Incorporation,  the provision of that Act or the  Certificate of
Incorporation shall govern.

         2.  Amendments  to By-Laws.  These  By-Laws may be altered,  amended or
repealed  by the  shareholders  or the Board.  Any By-Laws  adopted,  amended or
repealed by the shareholders may be amended or repealed by the Board, unless the
resolution of the shareholders  adopting such By-Laws expressly  reserves to the
shareholders the right to amend or repeal it.

         3.  Fiscal  Year.  The  fiscal  year of the  Corporation  shall  end on
September 30th of each year.


Amended and restated through June 30, 1998.

                                       8

                                                                    Exhibit 10.1

     STOCK  PURCHASE  AGREEMENT,  dated March 25, 1998,  between  Pharmaceutical
Resources,  Inc., a New Jersey  corporation  (the  "Company"),  whose  principal
offices are located at One Ram Ridge Road,  Spring Valley,  New York 10977,  and
Lipha Americas, Inc., a Delaware corporation (the "Purchaser"),  whose principal
offices are located at 1209 Orange Street, Wilmington, Delaware 19801.

     WHEREAS,  the Company  desires to issue and sell to the Purchaser,  and the
Purchaser  desires to purchase from the Company,  10,400,000  restricted  shares
(the "Shares") of the Company's  common stock, par value $.01 per share ("Common
Stock");

     WHEREAS,  concurrently  with the execution and delivery of this  Agreement,
Merck KGaA, an affiliate of the  Purchaser  ("Merck"),  and Clal  Pharmaceutical
Industries,  Ltd. ("Clal") are entering into a stock purchase agreement pursuant
to which  Merck (or its  designees)  will,  subject to the terms and  conditions
thereof, purchase from Clal certain shares of Common Stock beneficially owned by
Clal  (the  "Clal  Stock  Purchase   Agreement"),   the  consummation  of  which
transaction  shall  occur at the time of the  consummation  of the  transactions
contemplated by this Agreement;

     WHEREAS, concurrently with the execution and delivery of this Agreement and
as an  inducement to the Company to enter into this  Agreement,  the Company and
Genpharm, Inc. ("Genpharm"),  an affiliate of the Purchaser, are entering into a
distribution  agreement  pursuant  to  which,  and  subject  to  the  conditions
contained  therein,  the Company shall distribute  certain products of Genpharm,
substantially in the form of Exhibit A hereto (the "Distribution Agreement");

     WHEREAS, at the Closing (as defined in Section 1.2 hereof), the Company and
Genpharm and Merck shall enter into  services  agreements  substantially  in the
form  of  Exhibit  B  hereto  (collectively,  the  "Services  Agreements";  each
individually  referred  to herein as a "Services  Agreement")  pursuant to which
Merck and Genpharm shall render certain significant  services to the Company, in
consideration  of, among other things,  the issuance by the Company to Merck and
Genpharm of certain five-year stock options  exercisable  commencing in the year
2001 to acquire up to an  aggregate  of  1,171,040  additional  shares of Common
Stock  (the  "Option  Shares"),  substantially  in the form of  Exhibit C hereto
(collectively,  the  "Options";  each  individually  referred  to  herein  as an
"Option");

     WHEREAS,  the Company has  received a fairness  opinion from Gruntal & Co.,
L.L.C.  ("Gruntal") to the effect that the Purchase Price (as defined in Section
1.1  hereof)  and  the   transactions   contemplated  by  this  Agreement,   the
Distribution Agreement,  the Services Agreements and the Options are, taken as a
whole, from a financial point of view, fair to the holders of Common Stock;

     WHEREAS,  the  Company's  Board of Directors has approved the execution and
performance  of  this  Agreement,   the  Distribution  Agreement,  the  Services
Agreements  and  the  Options,   and  has  determined   that  the   transactions
contemplated hereby and thereby are in the best interests of the Company and its
shareholders; and

     WHEREAS,  the Company and the  Purchaser  desire to set forth their  mutual
agreements  with  respect to the sale and  purchase  of the Shares and as to the
other matters set forth herein.

                                        1

<PAGE>



         NOW,  THEREFORE,  in  consideration  of the  premises and of the mutual
agreements set forth herein, the parties hereto agree as follows:

         SECTION 1.        Closing Transactions.

         1.1 Purchase and Sale of Shares. At the Closing, the Company shall sell
to the  Purchaser,  and the  Purchaser  shall,  or shall cause its  designee to,
purchase  from the  Company,  upon  the  terms  and  subject  to the  conditions
hereinafter  set forth,  the  Shares for an  aggregate  cash  purchase  price of
$20,800,000 (the "Purchase Price"), or $2.00 per Share.

         1.2 The Closing.  The closing of the transactions  contemplated by this
Agreement (the "Closing") shall take place at the offices of Hertzog, Calamari &
Gleason,  100 Park Avenue, 23rd Floor, New York, New York, at 10:00 A.M., on the
second  business day following the date on which all of the conditions set forth
in  Sections  4 and 5  hereof  shall  have  been  satisfied  or,  to the  extent
permitted,  waived,  or at such other place, time and/or date as the parties may
agree (the  "Closing  Date");  provided,  that the Closing  Date shall not occur
before June 1, 1998.

     1.3 Closing  Deliveries.  (a) At the Closing,  the Company shall deliver to
the Purchaser, Merck and Genpharm, as applicable:

                           (i) a stock certificate or certificates  representing
         the Shares,  registered  in the name of the  Purchaser  or,  subject to
         Section 13.2 hereof, its designee on the Company's books and containing
         no  legends  other  than as set  forth in  Section  9.2  hereof  and as
         required  under the  Rights  Agreement  (as  defined  in  Section  7.11
         hereof);

                           (ii) a registration  rights agreement,  duly executed
         by the  Company,  substantially  in the form of  Exhibit D hereto  (the
         "Registration Rights Agreement");

                           (iii)    the certificates of officers of the Company 
         referred to in Sections 5.1 and 5.2 hereof;

                           (iv)     the agreements covering the Options, duly 
         executed by the Company;

                           (v)      the opinion of counsel referred to in 
         Section 5.3 hereof;

                           (vi)      the Services Agreements, duly executed by 
         the Company;

                           (vii)     the agreement of the Chairman of the 
         Company referred to in Section 7.10 hereof; and

                           (viii) the agreement of Kenneth Sawyer referred to in
         Section 7.3(e) hereof.


                                        2

<PAGE>



         (b) At the Closing, the Purchaser,  Merck and Genpharm,  as applicable,
shall deliver to the Company:

             (i)  the  Purchase  Price,  in  the  form  of a  wire  transfer  of
                  immediately  available  funds to an account  designated by the
                  Company;

             (ii) the  Registration  Rights  Agreement,  duly  executed  by  the
                  Purchaser, Merck and Genpharm;

             (iii) the certificates of officers of the Purchaser  referred to in
                  Sections 4.1 and 4.2 hereof;

             (iv) the opinion of counsel referred to in Section 4.3 hereof;

             (v)  the Services  Agreements,  duly executed by Merck or Genpharm,
                  as applicable;

             (vi) the agreements covering the Options, duly executed by Merck or
                  Genpharm, as applicable; and

             (vii) the agreement of the Purchaser (and its  Affiliates) referred
                  to in Section 7.3(e) hereof.

     SECTION 2.  Representations  and  Warranties  of the  Company.  The Company
hereby represents and warrants to the Purchaser as follows:

     2.1 Organization.  Each of the Company, and any corporation with respect to
which the Company owns a majority of the common stock,  or has the power to vote
or direct  the  voting  of  sufficient  securities  to elect a  majority  of the
directors,  or  has  the  power  to  control  or  direct  the  actions  of  such
corporation,  all of which are set forth on Schedule 2.11 hereto  (collectively,
the "Subsidiaries",  each individually referred to herein as a "Subsidiary"), is
a corporation  duly organized,  validly  existing and in good standing under the
laws of the  jurisdiction of its  incorporation,  as set forth on Schedule 2.11.
Each of the Company and its Subsidiaries  has all necessary  corporate power and
authority  to own or lease its  properties  and to conduct  its  business as now
being  conducted.  Each of the Company and its Subsidiaries is duly qualified to
do  business  and  is  in  good  standing  as  a  foreign  corporation  in  each
jurisdiction  in which the  property  owned,  leased or  operated  by it, or the
nature of the  business  conducted  by it,  requires  such  qualification  under
applicable  law, except where the failure to be so qualified would not result in
a Material Adverse Effect (as defined in Section 2.10 hereof).

                                        3

<PAGE>

     2.2  Authorization.  The execution,  delivery and, subject to obtaining the
approval (the "Shareholders'  Approval") of the holders of (i) a majority of the
outstanding  shares of Common Stock for the issuance of the Shares, the delivery
of the Options and the  issuance  of the Option  Shares,  (ii) a majority of the
outstanding   shares  of  Common  Stock  for  the  amendment  of  the  Company's
certificate  of  incorporation  in order to  increase  the number of  authorized
shares of Common Stock and (iii) a plurality of the shares of Common Stock voted
at a meeting for the election of the Nominees (as defined in Section 7.3 hereof)
(the preceding clauses (i), (ii) and (iii) to be individually referred to herein
as a "Proposal" and  collectively  as the  "Proposals"),  the performance by the
Company  of this  Agreement,  the other  agreements  referred  to herein and the
transactions  contemplated  hereby and thereby have been duly  authorized by all
requisite corporate action by the Company. This Agreement constitutes,  and each
other  agreement  referred to herein,  upon due  execution  and  delivery,  will
constitute, the valid and binding obligation of the Company, enforceable against
the Company in accordance with its terms,  except as such  enforceability may be
limited by (i)  bankruptcy  laws and other  similar  laws  affecting  creditors'
rights  generally and (ii) general  principles of equity,  regardless of whether
asserted in a proceeding in equity or at law.

     2.3  Non-contravention.  Neither the execution,  delivery or performance of
this Agreement and the other agreements  referred to herein nor the consummation
of the transactions  contemplated  hereby or thereby will,  subject to obtaining
the Shareholders' Approval,  violate or be in conflict with any provision of the
certificate  of  incorporation  or  by-laws  of  any  of  the  Company  and  its
Subsidiaries; subject to obtaining the Shareholders' Approval, and except as set
forth on Schedule 2.3 hereto,  violate or be in conflict with any material note,
bond, lease, mortgage,  indenture,  license,  contract,  commitment,  franchise,
permit, instrument or other material agreement or obligation to which any of the
Company and its  Subsidiaries is a party or by which it is bound;  violate or be
in conflict with any law, judgment,  decree,  order,  regulation or ordinance by
which any of the Company and its Subsidiaries is bound or affected; or result in
the creation or imposition of any liens, charges,  pledges or other encumbrances
("Liens") in favor of any third party upon any property or assets of the Company
and its Subsidiaries.

     2.4  Authorization  of the Shares.  Subject to obtaining the  Shareholders'
Approval, all corporate action necessary for the issuance,  sale and delivery of
the Shares has been taken by the Company  and,  when issued and  delivered  upon
payment in full of the Purchase Price, the Shares will be validly issued,  fully
paid  and  nonassessable,  free  and  clear  of any and all  Liens.  Subject  to
obtaining  the  Shareholders'  Approval,  the  Option  Shares  will  be  validly
authorized  for  issuance  and,  when and if issued upon  payment in full of the
exercise  price  for the  Option  Shares  in  accordance  with the  terms of the
Options, the Option Shares will be validly issued, fully-paid and nonassessable,
free and clear of any and all Liens.

     2.5 Capitalization. The authorized capital stock of the Company consists of
60,000,000  shares of Common Stock, of which no more than 18,923,000  shares are
issued and outstanding as of the date hereof,  and 6,000,000 shares of preferred
stock, par value $.0001 per share, of which no shares are issued and outstanding
as of the date hereof.  The Company holds no treasury  shares.  All  outstanding
shares of Common Stock have been duly and validly  issued and are fully-paid and
nonassessable.  There are no outstanding securities  exchangeable or convertible
into,  or options,  warrants,  or rights to subscribe  for, or to  purchase,  or
commitments to issue, any unissued shares of capital stock of any of the Company
and its Subsidiaries, except as set forth on Schedule 2.5 hereto.

                                        4

<PAGE>

     2.6 Reports  Under the Exchange Act.  Since October 1, 1994,  except as set
forth on Schedule  2.6 hereto,  the  Company has filed with the  Securities  and
Exchange  Commission  (the "SEC") in timely  fashion all reports  required to be
filed by the Company pursuant to the Securities Exchange Act of 1934, as amended
(the "Exchange Act") (as such reports may have been amended or supplemented, the
"SEC  Reports").  The Common  Stock is  registered  under  Section  12(b) of the
Exchange Act. As of their respective  filing dates with the SEC, the SEC Reports
did not  contain  any untrue  statement  of a  material  fact or omit to state a
material  fact  required to be stated  therein or necessary in order to make the
statements made therein,  in light of the circumstances in which they were made,
not misleading.

     2.7 No Brokers or Finders. No person, firm or corporation has or will have,
as a result of any act or omission  by any of the Company and its  Subsidiaries,
any right,  interest or valid claim  against the Purchaser or any of the Company
and its Subsidiaries for any commission,  fee or other  compensation as a finder
or broker,  or in any similar  capacity,  other than with respect to the opinion
referred  to in  Section  4.9  hereof  (the  costs of which will be borne by the
Company), in connection with the transactions contemplated by this Agreement.

     2.8  Governmental   Authorizations;   Third-Party  Consents.  No  approval,
consent,  authorization  or other  action by, or notice to or filing  with,  any
governmental  authority or any other person or entity, and no lapse of a waiting
period,  is necessary or required in connection with the execution,  delivery or
performance by the Company of this Agreement,  the other agreements  referred to
herein or the transactions  contemplated hereby or thereby,  except for (i) such
filings  or  approvals  required  pursuant  to the  Hart-Scott-Rodino  Antitrust
Improvements Act of 1976, as amended, and the regulations promulgated thereunder
(the "HSR  Act"),  (ii) such  filings  or  approvals  as may be  required  to be
obtained in connection with the manufacture and sale of products pursuant to the
Distribution Agreement, (iii) the Shareholders' Approval of the Proposals by the
requisite votes, (iv) such filings or approvals  required to list the Shares and
the Option Shares on the New York Stock  Exchange and the Pacific Stock Exchange
and (v) the matters set forth on Schedule 2.8 hereto.

     2.9 Financial  Statements.  The audited financial statements of the Company
included in the  Company's  Annual Report on Form 10-K for the fiscal year ended
September  30,  1997 (the  "Audited  Statements")  and the  unaudited  financial
statements  of the Company  included in the Company's  Quarterly  Report on Form
10-Q for the fiscal quarter ended December 31, 1997 (the "Unaudited Statements")
complied  as to form with the  requirements  of the  Exchange  Act and except as
disclosed  therein or in the  footnotes  thereto and,  except for the absence of
notes  and  subject  to  year-end  adjustments  in the  case  of  the  Unaudited
Statements,  were prepared in accordance with United States  generally  accepted
accounting  principles.  The Audited  Statements  and the  Unaudited  Statements
fairly present, in all material respects,  the consolidated  financial condition
and the  consolidated  results of  operations of the Company as of the dates and
for the periods indicated therein.

     2.10  Absence of Material  Adverse  Effect.  Except as disclosed in the SEC
Reports, since January 1, 1998, the business of the Company and its Subsidiaries
has been operated in the ordinary

                                        5

<PAGE>

course and substantially  consistent with past practice.  Since January 1, 1998,
there has been no event or circumstance  resulting in a material  adverse effect
on the properties,  business and assets,  liabilities,  condition  (financial or
otherwise) or operations  of the Company and its  Subsidiaries,  considered as a
whole (a "Material  Adverse  Effect").  There has been no event or circumstance,
since January 1, 1998,  which would  materially  adversely affect the ability of
the Company to perform its obligations under this Agreement, or any of the other
agreements  to  be  entered  into  in  connection  with  this  Agreement,  or to
consummate the transactions contemplated hereby and thereby.

     2.11 Subsidiaries;  Other Equity Interests.  Each Subsidiary of the Company
and each other  person in which the  Company or any of its  Subsidiaries  has an
equity interest is set forth on Schedule 2.11 hereto.  Each Subsidiary is wholly
(100%) owned by the Company.  The authorized,  issued and outstanding  shares of
the capital stock of each Subsidiary, and the record and beneficial ownership of
the outstanding  shares thereof,  is as set forth on Schedule 2.11. There are no
agreements or  arrangements to which any Subsidiary is a party or by which it is
bound for the  redemption,  repurchase or issuance of, and there are no options,
warrants,  puts,  calls or other rights to subscribe for or purchase,  shares of
such Subsidiary's capital stock.

     2.12 No Third-Party Options. Except as contemplated hereby, as set forth on
Schedule 2.12 hereto, or as disclosed in the SEC Reports,  there are no existing
agreements,  contracts,  commitments, options, warrants or rights with, of or to
any person which are binding on the Company or its  Subsidiaries  to acquire any
of the  Company's and its  Subsidiaries'  assets,  properties,  or rights or any
interest  therein  (whether  real,  personal or mixed,  tangible or  intangible,
wherever  located  and  whether  in  the  possession  of  the  Company  and  its
Subsidiaries or any other person), except for those entered into in the ordinary
course of  business  consistent  with past  practice  for the sale of  inventory
and/or which could not  reasonably  be expected to result in a Material  Adverse
Effect.

     2.13 Employee Matters.

     (a)  The  Company  has  delivered  to the  Purchaser  a list of its and its
Subsidiaries' current employees (the "Employees"). This list, attached hereto as
Schedule  2.13(a),  sets forth the current  compensation,  commissions or hourly
rate of pay, date of birth,  date and location of  employment  and job title for
each Employee. Schedule 2.13(a) lists all agreements between the Company and its
Subsidiaries  and  any  Employee(s)  with  respect  to  the  employment  of  any
Employee(s).  Except as set forth on Schedule 2.13(a),  there are no outstanding
loans with outstanding  principal  amounts in excess of $50,000 from the Company
or any of its  Subsidiaries  to any  Employees.  Except as set forth on Schedule
2.13(a),  no Employee is on disability or other leave of absence and the Company
is not  aware of the  intent of any  officer,  executive  employee  or head of a
department  of any of the  Company and its  Subsidiaries  to  terminate  his/her
employment.

     (b) Schedule 2.13(b) hereto lists each "employee  benefit plan", as defined
in Section  3(3) of the Employee  Retirement  Income  Security  Act of 1974,  as
amended ("ERISA"),  whether or not covered by ERISA, that any of the Company and
its Subsidiaries sponsors or has

                                        6

<PAGE>

sponsored to which the Company or any of its  Subsidiaries is or has been in the
past three years required to make  contributions,  including without  limitation
any pension,  profit-sharing,  retirement or deferred  compensation  plan,  each
other benefit plan,  policy,  arrangement or practice,  whether  covering one or
more employees,  which provides deferred  compensation,  bonus,  stock purchase,
stock  option,  vacation,  severance,   disability,   hospitalization,   medical
insurance or life insurance payments or benefits and any other material employee
benefit plans,  agreements,  arrangements or  understandings  maintained for the
benefit of the  Employees  or former  employees  of any of the  Company  and its
Subsidiaries  ("Former  Employees")  (collectively,  together  with any  related
trusts, the "Employee Benefit Plans").  Except as set forth on Schedule 2.13(b),
no Employee  Benefit Plan  constitutes a  multi-employer  plan (as defined under
Section  400(a)(3)  of  ERISA).  Except as set forth on  Schedule  2.13(b),  all
participants in the Employee Benefit Plans are Employees or Former Employees (or
their dependents or beneficiaries). The Company has previously delivered or made
available  to the  Purchaser  true  and  complete  copies  of all  documents  or
instruments establishing or constituting each such Employee Benefit Plan and all
summary  plan  descriptions  or other  descriptive  materials  relating  thereto
distributed  by the Company and its  Subsidiaries  to  Employees.  Except as set
forth  on  Schedule  2.13(b),  all  Employee  Benefit  Plans  are  currently  in
compliance with all applicable funding  requirements under law. Schedule 2.13(b)
also  sets  forth a list of those  Former  Employees  (or  their  dependents  or
beneficiaries)  who are receiving  continuation  coverage under the Company's or
any of its  Subsidiaries'  medical plans  pursuant to the  Consolidated  Omnibus
Budget  Reconciliation  Act of 1985  ("COBRA")  and the dates upon  which  those
individuals commenced receiving such continuation coverage.  Except as set forth
on Schedule 2.13(b), none of the Company, its Subsidiaries or the Purchaser will
incur any  liability  under  any  Employee  Benefit  Plan or  agreement  with an
Employee solely as a result of the transactions contemplated by this Agreement.

     (c) Except as set forth on  Schedule  2.13 (c)  hereto,  (i) each  Employee
Benefit Plan which is an "employee  pension benefit plan", as defined in Section
3(2) of ERISA,  meets the  requirements  of  Section  401(a) of the Code and any
related trust is exempt from U.S. federal income tax under Section 501(a) of the
Code and (ii) the Company and its Subsidiaries are in compliance in all material
respects with the terms of such Employee Benefit Plans and with the requirements
of the Internal  Revenue Code of 1986,  as amended  (the  "Code"),  and ERISA in
respect  thereto.  None of the Company or its  Subsidiaries  has any  obligation
under any Employee Benefit Plan or otherwise to provide  post-retirement  health
benefits  (exclusive  of  obligations  under  COBRA) with  respect to any of the
Employees or Former Employees.

     (d) The Employees are not and have not in the past three years been covered
by any labor or  collective  bargaining  agreement.  No strike,  work  stoppage,
picketing,  slowdown,  lockout or material labor dispute involving the Company's
or its Subsidiaries'  operations has occurred during the past three years or, to
the Company's knowledge,  is threatened.  To the Company's knowledge, no attempt
at the  organization  of a union involving the Company or its  Subsidiaries  has
occurred during the past three years or is threatened.

     (e) None of the  Company or its  Subsidiaries  has  incurred  any  material
liability  under,  and has complied in all material  respects  with,  the Worker
Adjustment Retraining and

                                        7

<PAGE>

Notification  Act and the  regulations  promulgated  thereunder  and any similar
state  laws and does not  reasonably  expect  to incur any such  liability  as a
result of actions taken or not taken prior to the date hereof.

     (f) Except as set forth on Schedule  2.13(f)  hereto or as disclosed in the
SEC  Reports,  the Company and its  Subsidiaries  have  complied in all material
respects with all  applicable  laws,  rules,  regulations  and executive  orders
governing the terms and conditions of employment,  discriminatory practices with
respect to  employment,  hiring and  discharge,  the  employment of aliens,  the
payment of minimum wages and overtime,  workplace health and safety or otherwise
relating to the conduct of employers  with respect to  employees  and  potential
employees,  and except as set forth on Schedule 2.13,  there have been no claims
made or, to the  Company's  knowledge,  threatened  against  the  Company or its
Subsidiaries  arising out of, relating to or alleging any material  violation of
the foregoing.

     2.14 Permits. The Company and its Subsidiaries have all licenses,  permits,
orders, certificates, authorizations, consents and approvals of all governmental
and regulatory authorities and bodies, whether federal, state or local, domestic
or foreign,  which are  necessary for the operation of its business as currently
conducted  ("Permits"),  except for the failure to have such  Permits that could
not,  individually  or in the  aggregate,  reasonably be expected to result in a
Material Adverse Effect.  Except as could not, individually or in the aggregate,
reasonably be expected to result in a Material  Adverse Effect,  the Permits are
in full force and effect and no  suspension  or  cancellation  of any of them is
pending or, to the Company's knowledge, threatened.

     2.15  Intellectual  Property.  Schedule  2.15  hereto sets forth all of the
patents,  registered copyrights and registered trademarks of the Company and its
Subsidiaries,   all of which are owned by the Company or its  Subsidiaries  free
and clear of any Liens.  None of the Company or its  Subsidiaries  has infringed
upon or unlawfully used, in any material respect, any patent, trademark, service
mark, tradename,  copyright, or trade secret ("Intellectual  Property") owned by
another person. None of the Company or its Subsidiaries has received any written
notice of any claim of  infringement  or other material claim relating to any of
its Intellectual  Property. No shareholder of the Company or its Subsidiaries or
member of any such shareholder's family or any entity controlled by them, or any
Employee or Former  Employee  owns or has any  proprietary,  financial  or other
material interest,  directly or indirectly,  in any Intellectual  Property which
the  Company or its  Subsidiaries  owns,  possesses  or  materially  uses in its
operations.  Schedule  2.15 sets  forth all  confidentiality  or  non-disclosure
agreements  to  which  either  the  Company  or its  Subsidiaries  or any of its
Employees or Former  Employees  is a party and which relate to the  Company's or
its Subsidiaries' business and were executed in the past seven years.

     2.16 No Pending Litigation or Proceedings.  Except as set forth on Schedule
2.16 hereto or as disclosed in the SEC Reports,  there are no material  actions,
suits,  proceedings  (including arbitral proceedings) or investigations  pending
or,  to  the  Company's  knowledge,   threatened  against  the  Company  or  its
Subsidiaries  or  directly  relating  to or  otherwise  directly  affecting  the
business,  assets or properties of the Company and its  Subsidiaries.  Except as
set forth on Schedule 2.16 or as

                                        8

<PAGE>

disclosed  in  the  SEC  Reports,  there  is  no  outstanding  judgment,   writ,
injunction,  decree,  award  or  order  of  any  court  or any  governmental  or
regulatory authority or body against or directly affecting the business,  assets
or properties of the Company and its Subsidiaries.

     2.17  Insurance  Coverage.  Each of the  Company and its  Subsidiaries  has
during the past three years maintained  liability,  casualty,  property loss and
other  insurance  policies  with  respect to the conduct of its business in such
amounts,  of such kinds and with such  insurance  carriers as the Company and it
Subsidiaries, as applicable, has deemed appropriate and sufficient for companies
of a similar  size  engaged  in  similar  types of  businesses  and  operations.
Schedule  2.17 hereto sets forth a summary  description  of each such  insurance
policy, listing for each policy the risks insured against,  coverage limits, any
deductible  amounts,  any pending  claims  thereunder  and the term of each such
policy.  Each such policy is in full force and effect,  and no written notice of
cancellation  has been  received  with respect to any such policy,  nor will the
consummation  of the  transactions  contemplated  by this  Agreement  cause  the
cancellation  of, or the right to cancel,  any such policy pursuant to the terms
of such  policy.  The  Company  and its  Subsidiaries  have filed all notices or
reports  required under such policies,  except such filings the failure of which
to make could not reasonably be expected to result in a Material Adverse Effect.

     2.18 Compliance  with Laws.  Except as set forth on Schedule 2.18 hereto or
as disclosed in the SEC Reports,  each of the  Company's  and its  Subsidiaries'
business and  operations are being  conducted in compliance  with all applicable
laws, statutes,  rules, regulations,  ordinances,  codes, orders, franchises and
Permits  of all  governmental  entities,  including  without  limitation,  those
relating  to  occupational  safety and health  and equal  employment  practices,
except for such instances of  noncompliance  that could not,  individually or in
the aggregate, reasonably be expected to result in a Material Adverse Effect. No
notice,  citation,  summons or order has been assessed and no  investigation  or
review is pending or, to the Company's knowledge, threatened by any governmental
or other  entity with  respect to any alleged  material  violation by any of the
Company and its Subsidiaries of any of the foregoing.

     2.19 Environmental Matters.  Except as set forth on Schedule 2.19 hereto or
as  disclosed  in the SEC  Reports,  and except for such matters that could not,
individually or in the aggregate, reasonably be expected to result in a Material
Adverse Effect, (a) there are no investigations,  inquiries or other proceedings
pending or, to the Company's knowledge, threatened with regard to the current or
prior   conduct  of  the  business  and   operations  of  the  Company  and  its
Subsidiaries, or relating to (x) any properties owned or previously owned by the
Company and its Subsidiaries, (y) any properties at which any of the Company and
its Subsidiaries  has conducted  operations or (z) any sites at which any of the
Company and its  Subsidiaries  has disposed of, or arranged for the disposal of,
waste materials, and arising out of or relating to any actual or alleged failure
to comply with any requirement of any law, statute,  rule,  regulation,  code or
ordinance relating to air or water quality, waste management, hazardous or toxic
substances,  or the  protection  of  health or the  environment  ("Environmental
Laws");  (b) the  Company  and  its  Subsidiaries  are in  compliance  with  the
requirements  of  all  Environmental  Laws  in  connection  with  its  business,
operations and otherwise; and (c) none of the properties or sites referred to in
clauses (x), (y) or (z) above is contaminated with

                                        9

<PAGE>

any  hazardous  waste or  substance  as a result of any act or  omission  of the
Company and any of its Subsidiaries,  or, to the Company's knowledge, any agent,
servant or bailee of the Company and any of its  Subsidiaries,  to a degree that
poses a risk to health or the  environment  or could  impose a liability  on the
Company.  With regard to compliance with Environmental Laws, the representations
and warranties set forth in this Section 2.19 shall  supersede the provisions of
Section 2.18 hereof.

     2.20 Tax Returns and Taxes.

     (a) The  Company  and its  Subsidiaries  have  filed  all Tax  Returns  (as
hereinafter  defined)  required to be filed by it.  Except  with  respect to any
contested liability for Taxes (as hereinafter defined), as set forth on Schedule
2.20  hereto,  all such Tax Returns  were  correct and  complete in all material
respects.  All Taxes owed by the Company and any of its Subsidiaries (whether or
not shown on any Tax Return) have been paid except for (i) Taxes accrued but not
yet  payable,  (ii) Taxes which are being  contested  in good  faith,  and (iii)
Taxes,  the non-payment of which could not reasonably be expected to result in a
Material  Adverse  Effect.  Except as set forth on  Schedule  2.20,  none of the
Company and its Subsidiaries has received any notice of assessment of additional
Taxes that is currently  pending.  Except as set forth on Schedule 2.20, none of
the  Company  and its  Subsidiaries  has waived any  statute of  limitations  in
respect of Taxes or executed or filed with any Tax  authority  any  agreement or
document  extending the period of  assessment of any Taxes,  and the Company and
its  Subsidiaries  are not  currently the  beneficiary  of any extension of time
within which to file any Tax Return. Except as set forth on Schedule 2.20, there
are no claims, examinations, audits, proceedings or proposed deficiencies for or
in respect of Taxes pending or, to the Company's  knowledge,  threatened against
the  Company  or its  Subsidiaries.  No claim  has been made in  writing  to the
Company  or its  Subsidiaries  in the  past  three  years by an  authority  in a
jurisdiction where the Company and its Subsidiaries do not file Tax Returns that
it is or may be subject to taxation by that jurisdiction.  There are no recorded
Tax Liens on any of the  assets of the  Company  and its  Subsidiaries,  nor are
there  any  security  interests  on any of the  assets  of the  Company  and its
Subsidiaries  that arose in connection with any failure (or alleged  failure) of
the  Company or any of its  Subsidiaries  to pay any Tax  (other  than Liens and
security  interests  for Taxes  not yet due and  payable  or for Taxes  that the
Company  (or any of its  Subsidiaries,  as  applicable)  is  contesting  in good
faith).

     (b) The Company (and each of its Subsidiaries,  as applicable) has withheld
and paid all Taxes  required by applicable law to have been withheld and paid in
connection  with  amounts  paid or owing to any  Employee  or  Former  Employee,
independent contractor, creditor, stockholder or other third party, except where
the  failure to do so could not  reasonably  be expected to result in a Material
Adverse Effect.

     (c)  Except as set forth on  Schedule  2.20,  there is no  dispute or claim
concerning  any Tax  liability  of the Company (or any of its  Subsidiaries,  as
applicable)  either  (i)  claimed  or raised by any  governmental  authority  in
writing or (ii) as to which the  Company or any of its  executive  officers  (or
employees  principally  responsible  for Tax matters) has  knowledge  based upon
personal  contact with any agent of such  authority.  Schedule  2.20 lists those
federal, state, local, and foreign

                                       10

<PAGE>

income  Tax  Returns   filed  with  respect  to  the  Company  (or  any  of  its
Subsidiaries, as applicable) that have been audited in the past three years, and
indicates those Tax Returns that currently are the subject of audit.

     (d) The Company (or any of its Subsidiaries, as applicable) has not filed a
consent under Section 341(f) of the Code  concerning  collapsible  corporations.
Except as set forth on  Schedule  2.20(f)  hereto,  the  Company  (or any of its
Subsidiaries,  as applicable) has not made any payments,  nor is it obligated to
make  any  payments,  nor is it a party  to any  agreement  that  under  certain
circumstances could obligate it to make any payments that will not be deductible
under Section 280G of the Code.  The Company has disclosed on its federal income
Tax Returns all  positions  taken  therein that could give rise to a substantial
understatement  of federal  income Tax within the meaning of Section 6662 of the
Code. The Company (or any of its Subsidiaries,  as applicable) is not a party to
any Tax allocation or sharing agreement. The Company has not been a member of an
Affiliated  Group filing a consolidated  federal income tax return (other than a
group the common parent of which is the Company).

     (e) The Company (or any of its  Subsidiaries,  as applicable) does not have
(i)  income   reportable  for  a  period  ending  after  the  Closing  Date  but
attributable  to a transaction  (e.g.,  an installment  sale)  occurring in or a
change in accounting  method made for a period ending on or prior to the Closing
Date which resulted in a deferred  reporting of income from such  transaction or
from such  change in  accounting  method  (other  than a  deferred  intercompany
transaction);  or  (ii)  deferred  gain  or  loss  arising  out of any  deferred
intercompany  transaction.  No "ownership change" (within the meaning of Section
382(g) of the Code) has, to the Company's knowledge,  occurred prior to the date
hereof which currently limits the Company's ability to utilize any net operating
loss carryovers under Section 382 of the Code.

     For purposes of this Agreement,  "Tax" or "Taxes" means any federal, state,
local, or foreign income, gross receipts, license, payroll, employment,  excise,
severance,   stamp,  occupation,   premium,   windfall  profits,   environmental
(including  taxes  under Code  Section  59A),  customs  duties,  capital  stock,
franchise,  profits,  withholding,  social security (or similar),  unemployment,
disability,   real  property,   personal   property,   sales,   use,   transfer,
registration,  value added,  alternative or add-on minimum,  estimated, or other
tax of any kind  whatsoever,  including  any  interest,  penalty,  deficiency or
addition  thereto,  whether  disputed or not, and "Tax Return" means any return,
declaration,  report,  claim for  refund,  or  information  return or  statement
relating to Taxes,  including any schedule or attachment thereto,  and including
any amendment thereof.

     2.21 Outstanding  Registration Rights. Except as set forth on Schedule 2.21
hereto or as disclosed in the SEC Reports, the Company has not in the past three
years  granted (or  incurred any  obligations  or  commitments  to grant) to any
holder or holders of any capital stock (or rights to acquire any capital  stock)
of the  Company  (i) any  rights to request  or demand  registration  of, or the
filing of an offering  circular with respect to,  outstanding  shares of capital
stock of the  Company  under any  securities  laws or rules,  (ii) any rights to
include  any  outstanding  shares  of  capital  stock  of  the  Company  in  any
registration or filing  effected by the Company  pursuant to any securities laws
or

                                       11

<PAGE>

rules,  or (iii) any rights to require  the  Company  to take  action  under any
securities laws or rules in order to permit or otherwise facilitate  disposition
of any outstanding shares of the Company's capital stock.

     2.22 Certain Beneficial Owners.

     (a)  Schedule  2.22(a)  hereto  sets  forth  an  analysis  prepared  by the
Company's  auditors  stating the stock ownership of 5-percent  shareholders  (as
such term is defined in Section  382 of the Code) in the Company as of the dates
indicated  therein.  To the Company's  knowledge,  such Schedule  correctly sets
forth in all material  respects the stock ownership of such shareholders and the
changes in such stock ownership as of each fiscal year-end indicated therein.

     (b) Schedule  2.22(b)  lists all options,  warrants,  or other stock rights
issued by the  Company  and  outstanding  as of the date  hereof to any  person,
whether or not a 5-Percent  Shareholder,  that have not yet been exercised as of
the date  hereof,  together  with  the  exercise  dates,  exercise  prices,  any
consideration paid therefor and expiration dates.

     2.23 FDA  Compliance.  The  products  manufactured,  sold,  distributed  or
supplied by each of the Company and its  Subsidiaries,  as  applicable,  are not
adulterated or misbranded  within the meaning of the United States Federal Food,
Drug and Cosmetic Act, as amended ("USFFDCA"),  and comply with any monograph or
other  requirements  of the United States Food and Drug  Administration  ("FDA")
applicable  to the  products  or their  manufacture,  except  for  instances  of
noncompliance  that could not,  individually or in the aggregate,  reasonably be
expected to result in a Material  Adverse  Effect.  Such  products have been and
continue  to  be  manufactured  in  compliance  with  all  applicable  statutes,
ordinances  and  regulations,  including but not limited to, the USFFDCA and the
regulations thereunder, including the current Good Manufacturing Practices which
have been adopted by the FDA, except for instances of  noncompliance  that could
not,  individually  or in the  aggregate,  reasonably be expected to result in a
Material Adverse Effect.  Current Good Manufacturing Practice means current good
manufacturing  practice regulations  established in 21 C.F.R. Parts 210 and 211,
as amended and in effect from time to time,  and other  applicable  FDA policies
relating thereto. Except as set forth on Schedule 2.23 hereto or as disclosed in
the SEC Reports,  none of the Company and its Subsidiaries has in the past three
years  received  any notice or summons  in  respect of a material  violation  or
alleged  material  violation of any statute or regulation  from the FDA or other
similar authorities.

     2.24 Reliance. The representations, warranties, covenants and agreements of
the Company  contained herein and in the certificates and schedules  required to
be delivered in accordance  with the terms of this Agreement  shall,  subject to
Section 11 hereof,  survive any investigation made by the Purchaser and are made
by the Company with the  expectation  that the  Purchaser is relying  thereon in
entering  this  Agreement  and  the  same  shall  not be  deemed  waived  by any
investigation conducted by the Purchaser or its employees, advisors, consultants
or representatives, whether before or after the consummation of the transactions
contemplated hereby.


                                       12

<PAGE>

     SECTION 3.  Representations and Warranties of the Purchaser.  The Purchaser
hereby represents and warrants to the Company as follows:

     3.1 Organization. The Purchaser is a corporation duly organized and validly
existing and in good standing  under the laws of Delaware and is a  wholly-owned
subsidiary  of  Merck.  The  Purchaser  has all  necessary  corporate  power and
authority  to own or lease its  properties  and to conduct  its  business as now
being conducted.

     3.2 Authorization. The execution, delivery and performance by the Purchaser
of this Agreement,  the other agreements referred to herein and the transactions
contemplated  hereby and  thereby  have been duly  authorized  by all  requisite
corporate action by the Purchaser and, in the case of the Distribution Agreement
and the Services Agreement to which it is a party, by Merck and Genpharm, as the
case  may be.  This  Agreement  constitutes,  and each of the  other  agreements
referred to herein,  upon execution and delivery,  will constitute,  a valid and
binding  obligation  of the  Purchaser  and,  in the  case  of the  Distribution
Agreement  and the  Services  Agreement  to which it is a  party,  of Merck  and
Genpharm,  enforceable against the Purchaser, Merck or Genpharm, as the case may
be, in accordance with its terms,  except as such  enforceability may be limited
by (i)  bankruptcy  laws and other  similar  laws  affecting  creditors'  rights
generally and (ii) general principles of equity,  regardless of whether asserted
in a proceeding in equity or at law.

     3.3 Non-contravention.  Neither the execution,  delivery and performance of
this Agreement and the other agreements  referred to herein nor the consummation
of the  transactions  contemplated  hereby  or  thereby  will  violate  or be in
conflict with any provision of the articles of organization of the Purchaser or,
in the case of the Distribution Agreement and the Services Agreement to which it
is a party, of Merck or Genpharm,  as the case may be; violate or be in conflict
with any material note, bond, lease,  mortgage,  indenture,  license,  contract,
commitment,  franchise,  permit,  instrument  or  other  material  agreement  or
obligation  to which the  Purchaser,  Merck or  Genpharm  is a party or by which
either of them is  bound;  violate  or be in  conflict  with any law,  judgment,
decree, order, regulation or ordinance by which the Purchaser, Merck or Genpharm
is bound or affected;  or result in the creation or  imposition  of any Liens in
favor of any third party upon any property or assets of the Purchaser,  Merck or
Genpharm.

     3.4 No Brokers or Finders. No person, firm or corporation has or will have,
as a result of any act or  omission by the  Purchaser,  Merck or  Genpharm,  any
right,  interest or valid claim against the Company for any  commission,  fee or
other  compensation  as a finder  or  broker,  or in any  similar  capacity,  in
connection with the transactions contemplated by this Agreement.

     3.5  Governmental   Authorizations;   Third-Party  Consents.  No  approval,
consent,  authorization  or other  action by, or notice to or filing  with,  any
governmental  authority or any other person or entity, and no lapse of a waiting
period,  is necessary or required in connection with the execution,  delivery or
performance by the Purchaser or, in the case of the  Distribution  Agreement and
the Services Agreement to which it is a party, by Merck or Genpharm, as the case
may be, of this

                                       13

<PAGE>

Agreement,   the  other  agreements  referred  to  herein  or  the  transactions
contemplated  hereby or  thereby,  except  for such  filings  or  approvals  (a)
required pursuant to the HSR Act and (b) as may be required (by the FDA or other
governmental  authorities)  to be obtained in connection  with the  Distribution
Agreement.

     3.6  Investment  Representations.  (a) The Purchaser and its Affiliates (as
defined in Rule 405 of the Securities  Act of 1933, as amended (the  "Securities
Act")) are  acquiring  the Shares and the  Options  and,  upon  exercise  of the
Options,  will be acquiring  the Option Shares solely for their own accounts and
not with a view to, or for resale in connection with, any  distribution  thereof
within the  meaning of the  Securities  Act.  Each of the  Purchaser,  Merck and
Genpharm is an "accredited  investor" (as defined in Rule 501(a) of Regulation D
promulgated under the Securities Act).

     (b) The Purchaser, on behalf of itself and its Affiliates, understands that
(i) the Shares and the Option have not been  registered,  and the Option Shares,
when issued,  will not be registered  under the Securities Act or any applicable
state  securities  laws,  by  reason  of  their  issuance  by the  Company  in a
transaction exempt from the registration  requirements of the Securities Act and
applicable state securities laws and (ii) the Shares, the Options and the Option
Shares  must be held by the  Purchaser  (or Merck or  Genpharm,  as  applicable)
indefinitely  unless a subsequent  disposition  thereof is registered  under the
Securities  Act and  applicable  state  securities  laws or is exempt  from such
registrations.

     (c) The  Purchaser,  on behalf of itself and its  Affiliates,  acknowledges
that no  representations or warranties have been made or furnished to, or relied
on by,  the  Purchaser  or any of its  representatives  in  connection  with its
purchase of the Shares except as expressly  provided  herein.  The Purchaser has
such  knowledge  and  experience  in financial  and business  matters that it is
capable of evaluating the risks and merits of this investment.

     (d) The  Purchaser,  on behalf of itself and its  Affiliates,  acknowledges
that,  following  its  acquisition  of the  Shares,  the  Purchaser  will  be an
Affiliate  of  the  Company  and  will  be  subject  to  all   requirements  and
restrictions  applicable to Affiliates under the Securities Act and the Exchange
Act (including the rules and regulations promulgated thereunder).

     SECTION 4. Conditions to the Company's Obligation.

     The obligation of the Company to consummate the  transactions  contemplated
hereby shall be subject to the  satisfaction or waiver (other than in respect of
Sections 4.4, 4.6 and 4.8 hereof) by the Company, at or prior to the Closing, of
all the following conditions:

     4.1 Representations  and Warranties.  The representations and warranties of
the  Purchaser  set forth in this  Agreement  shall be true and  correct  in all
material respects on and as of the date hereof and on and as of the Closing Date
(with the same effect as though such  representations  and  warranties  had been
made on and as of such Closing Date),  and officers of the Purchaser  shall have
certified to such effect to the Company in writing.

                                       14

<PAGE>

     4.2  Performance  of  Obligations.  The  Purchaser  shall  have  performed,
satisfied and complied with all covenants, agreements and conditions required by
this  Agreement to be  performed,  satisfied or complied with by it on or before
the Closing  Date,  and officers of the Purchaser  shall have  certified to such
effect to the Company in writing.

     4.3  Opinion of Counsel.  The  Company  shall have  received  from  Coudert
Brothers,  counsel for the Purchaser, an opinion addressed to the Company, dated
the Closing Date, in form and substance reasonably  satisfactory to the Company,
it being  understood  that  Coudert  Brothers  may  rely  upon  the  opinion  of
Klaus-Peter  Brandis,  Head of the Legal Department of Merck, for all matters of
German law, if applicable.

     4.4 No  Litigation  or  Legislation.  No federal,  state,  local or foreign
statute,  rule or regulation shall have been enacted after the date hereof,  and
no  litigation,  proceeding,  governmental  inquiry  or  investigation  shall be
pending,  which  prohibits  or seeks to prohibit  or  materially  restricts  the
consummation  of the  transactions  contemplated  by this Agreement or the other
agreements provided for herein.

     4.5 Clal Sale of Shares. Merck (or its designee) shall have purchased those
certain shares of Common Stock beneficially owned by Clal in accordance with the
terms of the Clal Stock Purchase Agreement,  and all agreements between Clal and
the Company  relating to or arising out of Clal's  acquisitions  of Common Stock
shall be  terminated  by the  parties  thereto  and be of no  further  force and
effect.

     4.6 HSR Act. All  applicable  waiting  periods under the HSR Act shall have
expired or been terminated with respect to the transactions contemplated by this
Agreement.

     4.7 Distribution  Agreement in Effect. The Distribution  Agreement shall be
in full force and effect and there shall exist no facts or circumstances  which,
with the giving of notice or the  passage of time or both,  would  constitute  a
material default thereunder by Genpharm.

     4.8  Shareholders'  Approval.  The  Shareholders'  Approval  of each of the
Proposals  shall  have been  obtained  and all of the  Nominees  (as  defined in
Section 7.3 hereof) shall have been elected.

     4.9  Fairness  Opinion.  The  fairness  opinion of Gruntal,  the  Company's
financial  advisor,  rendered  with  regard  to this  Agreement  and  the  other
agreements  to be  entered  into in  connection  herewith  and the  transactions
contemplated hereby and thereby shall have been reconfirmed by Gruntal as of the
date of mailing to the Company's  shareholders of the definitive proxy statement
(the "Proxy  Statement") in respect of the Company's meeting of its shareholders
to be held in connection with the Proposals (the "Meeting").

     4.10 Purchase Price and Other Closing Deliveries.  The Purchaser shall have
paid the Purchase Price and delivered, or cause to be delivered, the agreements,
instruments and certificates specified in Section 1.3(b) hereof.

                                       15

<PAGE>

     4.11  Consents and Waivers.  The Company  shall have  obtained all material
consents  and waivers  necessary  or  appropriate  for its  consummation  of the
transactions  contemplated by this Agreement, as specified in Section 2.8 hereof
and Schedule 2.8 hereto, and the other agreements referred to herein after using
its reasonable best efforts to obtain them.

     4.12 Services  Agreements.  Merck and Genpharm shall have duly executed and
delivered to the Company the Services Agreements.

     4.13 Purchaser Board  Approval.  The Board of Directors of Merck shall have
approved this Agreement and the transactions  contemplated hereby prior to April
3, 1998.

     SECTION 5. Conditions to the Purchaser's Obligation.

     The obligation of the Purchaser to consummate the transactions contemplated
hereby shall be subject to the  satisfaction or waiver (other than in respect of
Sections 5.4, 5.5 and 5.9 hereof) by the Purchaser,  at or prior to the Closing,
of all the following conditions:

     5.1 Representations  and Warranties.  The representations and warranties of
the  Company  set  forth in this  Agreement  shall be true  and  correct  in all
material respects on and as of the date hereof and on and as of the Closing Date
(with the same effect as though such  representations  and  warranties  had been
made on and as of such Closing  Date),  and  officers of the Company  shall have
certified to such effect to the Purchaser in writing.

     5.2 Performance of Obligations. The Company shall have performed, satisfied
and complied with all  covenants,  agreements  and  conditions  required by this
Agreement to be  performed,  satisfied  or complied  with by it on or before the
Closing Date, and officers of the Company shall have certified to such effect to
the Purchaser in writing.

     5.3 Opinion of Counsel.  The  Purchaser  shall have  received from Hertzog,
Calamari  & Gleason,  counsel  for the  Company,  an  opinion  addressed  to the
Purchaser, dated the Closing Date, in form and substance reasonably satisfactory
to the Purchaser.

     5.4 No  Litigation  or  Legislation.  No federal,  state,  local or foreign
statute,  rule or regulation shall have been enacted after the date hereof,  and
no  litigation,  proceeding,  governmental  inquiry  or  investigation  shall be
pending,  which  prohibits  or seeks to prohibit  or  materially  restricts  the
consummation  of the  transactions  contemplated  by this Agreement or the other
agreements  provided for herein, or materially  restricts or impairs the ability
of the Purchaser to own an equity interest in the Company.

     5.5 HSR Act. All  applicable  waiting  periods under the HSR Act shall have
expired or been terminated with respect to the transactions contemplated by this
Agreement.


                                       16

<PAGE>

     5.6 Board Resignations.  The Purchaser shall have received the resignations
of the current  members of the Board of  Directors  of the  Company,  subject to
their re-election in accordance with Section 7.3 hereof.

     5.7 No Material Adverse Effect. Since the date hereof, there shall not have
occurred a condition or event constituting a Material Adverse Effect (other than
in respect of the matter set forth on Schedule 2.10 hereto).

     5.8 ISRA. The Company shall have delivered to the Purchaser evidence of the
Company's having obtained an ISRA Clearance (as defined in Section 7.4 hereof).

     5.9  Shareholders'  Approval.  The  Shareholders'  Approval  of each of the
Proposals  shall  have been  obtained  and all of the  Nominees  shall have been
elected.

     5.10 Closing  Deliveries.  The Company shall have delivered the Shares, the
Options and the agreements,  instruments and  certificates  specified in Section
1.3(a) hereof.

     5.11  Distribution  Agreement.  There shall exist no facts or circumstances
which,  with  the  giving  of  notice  or the  passage  of time or  both,  would
constitute a material default by the Company under the Distribution Agreement.

     5.12 Services Agreements; Options. The Company shall have duly executed and
delivered to Merck and Genpharm the Services Agreements and the Options.

     5.13 Board  Approval.  The Board of Directors of Merck shall have  approved
this Agreement and the transactions contemplated hereby prior to April 3, 1998.

     5.14 Option  Standstill  Agreements.  At least  fifteen  (15) days prior to
Closing,  the Company  shall have duly  executed and  delivered to the Purchaser
agreements in writing,  in form reasonably  satisfactory to the Purchaser,  from
(i) the four persons listed on Schedule 5.14(a) hereto that, notwithstanding the
terms of any stock option plan or any option heretofore granted, not to exercise
or seek to  exercise  such  options  until  three  (3)  years  and ten (10) U.S.
business days from the Closing Date and (ii) substantially all other persons who
then hold unexercised options, warrants or other stock rights to purchase Common
Stock,  other than those  persons set forth on  Schedule  5.14(b)  hereto,  not,
notwithstanding  the terms of any stock  option  plan or any option  theretofore
granted,  to exercise or seek to exercise such options,  warrants or other stock
rights, except to the extent indicated on Schedule 5.14(b).

     5.15 Section 7.10 Agreement. The Company shall have delivered the agreement
of the Chairman of the Company referred to in Section 7.10 hereof.


                                       17

<PAGE>

     5.16 Clal Share Purchase.  The Purchaser shall have purchased,  after using
its  reasonable  best  efforts to do so,  those  certain  shares of Common Stock
beneficially  owned  by Clal in  accordance  with the  terms  of the Clal  Stock
Purchase Agreement.

     5.17  Consent.  The Company  shall have obtained the approvals set forth on
Schedule 2.3, Item 1, hereto.


     SECTION 6. Covenants of the Parties.

     The Company and the Purchaser hereby covenant as follows:

     6.1  Hart-Scott-Rodino  Notification.  As soon  as  practicable  after  the
execution of this  Agreement,  the Company and the Purchaser shall each file, or
cause to be filed, with the Federal Trade Commission and the Antitrust  Division
of the  United  States  Department  of  Justice,  pursuant  to the HSR Act,  the
notifications  and  documentary   materials  required  in  connection  with  the
transactions  contemplated  by this Agreement.  Thereafter,  the Company and the
Purchaser will file any additional  information requested as soon as practicable
after  any  receipt  of a  request  for  additional  information  and  shall use
reasonable  best efforts to obtain early  termination of the applicable  waiting
period under the HSR Act. The Company and the  Purchaser  shall  coordinate  and
cooperate  with each other in exchanging  such  information  and providing  such
reasonable  assistance as may be requested in connection with such filings.  All
filing fees in connection with the HSR Act shall be paid by the Purchaser.

     6.2 Publicity. The Company and the Purchaser shall consult with each other,
to the extent reasonably practicable,  as to the form and substance of any press
releases and other  third-party  communications  or disclosures  relating to the
negotiation,  execution,  delivery and consummation of this Agreement, the other
agreements  referred  to herein,  and the  transactions  contemplated  hereby or
thereby.  No party shall be prohibited  from issuing or filing any press release
or other third-party communication or disclosure which, upon advice of its legal
counsel,  shall be deemed  necessary or appropriate  under applicable law or the
applicable rules of any stock exchange; provided, however, that such party shall
have first  consulted  with the other  party as to the form and  content of such
disclosure.  This covenant shall survive the Closing or any  termination of this
Agreement.

     6.3 Confidentiality.  All information to which access is given or furnished
by one  party  to the  other in  connection  with  the  negotiation,  execution,
delivery and consummation of this Agreement,  the other  agreements  referred to
herein,  and the  transactions  contemplated  hereby  or  thereby  shall be kept
confidential  by each  party  and  shall be used  only in  connection  with this
Agreement,  such other agreements and the transactions  contemplated  hereby and
thereby;  provided,   however,  that  the  foregoing  shall  not  apply  to  any
information  that (a) shall be publicly  available  as of the date  hereof,  (b)
shall become publicly available other than as a result of prohibited  disclosure
by such party, (c) shall be disclosed to such party by any person or entity that
is not known to such  party to be subject  to any  confidentiality  restrictions
imposed by the other party or (d) shall be

                                       18

<PAGE>

required to be disclosed by law, the  applicable  rules of any stock exchange or
by order of any court of competent jurisdiction. Without limiting the foregoing,
the Purchaser  shall not disclose,  and shall use its reasonable best efforts to
cause its Affiliates not to disclose,  any such confidential  information to any
person or entity  that is not an  Affiliate  or a  director  or  officer of such
Affiliate or any advisor thereto. This covenant shall survive the Closing or any
termination of this Agreement.

     6.4  Further  Assurances.  Upon  reasonable  request of a party and without
further  consideration,  the other party, whether prior to or after the Closing,
shall execute, acknowledge and deliver all such other instruments and documents,
and  shall  take all  such  other  actions  for the  purpose  of  effecting  and
evidencing the consummation of the  transactions  contemplated by this Agreement
and the other agreements referred to herein.  Without limiting the generality of
the foregoing,  the Company shall, and shall cause its Subsidiaries to, from the
date hereof  until the earlier of the Closing  Date or the  termination  of this
Agreement  pursuant  to  Section  13.11  hereof,  provide  all  information  and
documents  reasonably  requested by the Purchaser relating to a determination of
the Company's  status as a United States real property holding  corporation,  as
defined under the Code.

     SECTION 7. Covenants of the Company.

     The Company (and the Purchaser,  to the extent  expressly  provided in this
Section 7) hereby covenants as follows:

     7.1  Exchange  Act  Filings.  From and after the date hereof to the Closing
Date or the earlier  termination  of this  Agreement  pursuant to Section  13.11
hereof,  the Company  shall use its best efforts to file in a timely  manner all
reports  required  to be filed by it with the SEC  under  the  Exchange  Act and
shall, promptly upon filing, deliver copies of such reports to the Purchaser.

     7.2 Proxy Statement;  Meeting; Listing Applications.  (a) The Company shall
prepare,  review with the Purchaser  and its counsel,  and file with the SEC the
Proxy Statement as soon as reasonably  practicable  after the date hereof.  Each
party shall furnish all information  concerning itself and related persons which
is required or  customary  for  inclusion  in the Proxy  Statement.  The Company
shall,  as soon as reasonably  practicable  after the date hereof,  (i) take all
steps  necessary to duly call, give notice of, convene and hold a meeting of its
shareholders  for the  purpose of  securing  the  Shareholders'  Approval to the
Proposals  (such meeting is presently  contemplated by the parties to be held in
June  1998);  (ii)  distribute  to  its  shareholders  the  Proxy  Statement  in
accordance  with  applicable  Federal and state laws and with its Certificate of
Incorporation  and By-Laws;  and (iii) recommend (in the Proxy Statement and, if
deemed  appropriate by the Company,  otherwise) to its shareholders  approval of
the Proposals. Notwithstanding anything to the contrary contained herein, if the
Agreement shall be terminated (or is subject to termination) pursuant to Section
13.11 hereof, the Company may postpone,  adjourn or cancel the Meeting, withdraw
or change  its  recommendation  to its  shareholders  and/or  withdraw  or delay
distribution of the Proxy Statement.

     (b) The Company  shall use its  commercial  best efforts to have the Shares
and the Option  Shares  listed on The New York Stock  Exchange  and The  Pacific
Stock Exchange.

                                       19

<PAGE>

     7.3 Board  Representation.  (a) Subject to the conditions set forth herein,
the Company shall  nominate,  and the Company and the Purchaser  shall use their
best  efforts to cause the  election at the Meeting  of,  certain  persons to be
designated  by  each  of  the  Purchaser  and  the  Company  (collectively,  the
"Nominees"), as provided herein, to serve as directors on the Board of Directors
of the Company such that:

          (i) a majority of the members of such Board shall be  comprised of the
     Purchaser's designated representatives; and

          (ii)  three of the  members of such Board  shall be  comprised  of the
     Company's  designated  representatives  consisting  of  Kenneth  I.  Sawyer
     ("Sawyer")  and two  additional  representatives  designated by the current
     Board of Directors of the Company (collectively, the "Company Designees").

Notwithstanding  anything to the contrary contained herein,  each representative
designated by the Purchaser in  accordance  with Section  7.3(f) hereof shall be
nominated  for  election  to  serve  on  the  Board  of  Directors  unless  such
representative  shall not be  satisfactory  to the  Company's  current  Board of
Directors for good faith reasons and each Company Designee shall be nominated to
serve on the Board of Directors  unless such Designee  (other than Sawyer) shall
not be satisfactory to the Purchaser for good faith reasons. All current members
of the  Company's  Board of  Directors  not  nominated  as set forth above shall
resign  effective upon the Closing.  Any current members of such Board nominated
as set forth above shall resign  effective  upon the  Closing,  subject to their
renomination and re-election as set forth herein. All Nominees shall take office
if, and only if, the Closing shall occur.

     (b) Any director  designated  hereunder shall serve subject to the terms of
the Company's Certificate of Incorporation and By-laws, each as in effect on the
Closing Date, and the provisions of applicable law.

     (c) The Company  Designees and the Purchaser shall jointly designate two of
the Company's directors to comprise the audit committee of the Company.  Each of
such directors must qualify as independent, outside directors in accordance with
the rules and regulations of The New York Stock Exchange.

     (d) The directors  designated  by the Purchaser  shall serve as Class I and
Class III directors of the Company (as allocated by the  Purchaser)  whose terms
shall  expire in the years 2000 and 1999,  respectively.  The Company  Designees
shall serve as Class II directors of the Company whose terms shall expire in the
year 2001. There shall be no Class II directors other than the Company Designees
(and their respective successors selected in accordance with Section 8.1 hereof)
through May 31, 2001.

     (e) The Company shall include in the Proxy Statement distributed in respect
of the Meeting the Proposals  and shall  recommend its approval of each Proposal
(including approval of all

                                       20

<PAGE>

Nominees) by the shareholders of the Company.  Sawyer and the Purchaser (and its
Affiliates) agree to vote any shares of Common Stock which they own or otherwise
have the power to vote in favor of each of the Proposals  (including approval of
all Nominees).

     (f) The Company  shall give the Purchaser  written  notice not less than 10
days prior to the filing  with the SEC of the  preliminary  Proxy  Statement  in
respect of the Meeting to allow the  Purchaser  to  designate  its  nominees for
director  for  inclusion  in such Proxy  Statement.  The  Company  shall have no
obligation  to include such nominees in the Proxy  Statement  unless the Company
receives written notice from the Purchaser setting forth its designated nominees
(along with all  biographical and other  information  necessary for inclusion in
the Proxy  Statement) not later than five days after the Company's notice to the
Purchaser.

     7.4 Environmental Matters. For each parcel of real property which is owned,
operated, leased or used by the Company and any of its Subsidiaries in the State
of New Jersey,  the Company shall,  and shall cause each of its Subsidiaries to,
as applicable,  comply with the obligations imposed by the New Jersey Industrial
Site Recovery Act and any regulations promulgated thereunder, at or prior to the
Closing,  by  either  (a)  securing  any  of  the  following:  (i) a  letter  of
nonapplicability  from the New Jersey  Department  of  Environmental  Protection
("NJDEP");  (ii)  approval by NJDEP of a negative  declaration  submitted by the
Company;  (iii)  a no  further  action  letter  from  NJDEP;  (iv) a  letter  of
authorization  for the  transfer of  ownership  from NJDEP  without any material
conditions  thereto;  or (v)  approval  from  NJDEP of a  remediation  agreement
reasonably  acceptable  to the  Purchaser;  or (b) filing a De Minimis  Quantity
Exemption  Affidavit  with NJDEP (any of the items listed in clauses (a) and (b)
above being an "ISRA Clearance").

     7.5 Conduct of Business Prior to Closing. From and after the date hereof to
the  Closing  Date or the  earlier  termination  of this  Agreement  pursuant to
Section  13.11 hereof,  except as set forth on Schedule 7.5 hereto,  neither the
Company nor its Subsidiaries shall (a) conduct their respective businesses other
than in the ordinary course, except as contemplated by this Agreement; (b) amend
its charter or by-laws;  (c) sell,  lease or  otherwise  dispose of any material
assets  or  properties  owned  or  used in the  operation  of  their  respective
businesses,  except  for the  sale of  inventory  and  disposition  of  obsolete
equipment  in the  ordinary  course  of  business;  (d)  dissolve,  or  agree to
dissolve,  or merge or consolidate  with, or agree to merge or consolidate with,
or purchase or agree to purchase all or  substantially  all of the assets of, or
otherwise acquire, any other business entity; (e) authorize for issuance,  issue
or sell  any  additional  shares  of its  capital  stock  or any  securities  or
obligations  convertible  into shares of its capital stock or issue or grant any
option,  warrant or other  right to purchase  any shares of its  capital  stock,
except for (i) the granting of options,  warrants or rights under the  Company's
existing  stock or other plans (as such are set forth on Schedule  2.13  hereto)
and (ii) the issuance or sale of capital  stock  pursuant to the exercise of any
options,  warrants,  or rights  granted  prior to the date  hereof to any of the
Company's  employees,  directors,  independent  contractors  or other agents and
listed on Schedule  2.12  hereto;  (f) redeem,  buy back,  or cancel any shares,
securities, options, warrants or other stock rights in the Company; or (g) other
than in the  ordinary  course of business,  enter into any material  contract or
agreement,  or  incur  any  material  capital  expenditure,  which  has not been
approved by the Purchaser.

                                       21

<PAGE>

     7.6 Options, Warrants or Other Stock Rights. From and after the date hereof
to the Closing Date or the earlier  termination  of this  Agreement  pursuant to
Section  13.11 hereof,  the Company  shall issue options and warrants,  or other
stock rights under the Company's  existing  stock option or stock purchase plans
only if the  exercise  date is no earlier than three years from the Closing Date
and the options,  warrants or other stock rights are issued in  connection  with
the  performance  of  services  for the  Company  and  qualify as  "compensatory
options" within the meaning of Treas. Reg. Sec. 1.382-4(d)(8)(iii).

     7.7 Other Agreements. At the Closing, upon satisfaction or permitted waiver
of the conditions  set forth in Section 4 hereof,  the Company shall execute and
deliver the agreements, instruments and certificates specified in Section 1.3(a)
hereof.

     7.8  Right of First  Refusal.  (a)  Subject  to the  conditions  and  other
provisions set forth in this Section 7.8 and in Section 8.4 hereof, the Company,
for a period  of six years  following  the  Closing,  shall  give the  Purchaser
written  notice (the  "Transaction  Notice") of the Company's  intention to sell
equity  securities  of the Company in any offering  not subject to  registration
under the  Securities Act (or, if subject to  registration  under the Securities
Act, in any offering for cash only)  specifying the terms and conditions of such
offering,  including the type and amount of  consideration to be received by the
Company.  Subject  to the  conditions  and  other  provisions  set forth in this
Section  7.8 and in Section  8.4  hereof,  the  Purchaser  shall have the right,
exercisable by giving written notice to the Company within 30 days after receipt
of the Transaction Notice, to purchase all, but not less than all, of the equity
securities  described in the Transaction  Notice on substantially the same terms
and conditions as specified in such  Transaction  Notice.  In the event that the
Purchaser   shall  not  provide  notice  of  its  election  to  consummate  such
transaction  within  such  30-day  period,  the  Company  may  sell  the  equity
securities  to any third  party or  parties  (a  "Third-Party  Transaction")  on
substantially  the same terms and  conditions  as specified  in the  Transaction
Notice at any time within 90 days after the expiration of such 30-day period. If
the Company shall not  consummate a Third-Party  Transaction  within such 90-day
period,   the  consummation  of  such  Transaction  or  any  other   Third-Party
Transaction shall again be subject to the Purchaser's  rights under this Section
7.8(a).

     (b) The closing of any  transaction  to be  consummated  with the Purchaser
pursuant  to this  Section 7.8 shall take place at the offices of the Company or
its counsel on a date designated by the Company and reasonably acceptable to the
Purchaser  not  later  than  60  days  after  the  Purchaser's  receipt  of  the
Transaction Notice.

     7.9 Appointment of COO. As soon as practicable  following the Closing,  the
Board of Directors of the Company  shall duly elect a designee of the  Purchaser
as the  President and Chief  Operating  Officer (COO) of the Company and each of
its Subsidiaries.

     7.10 Agreement of the Chairman of the Company. At the Closing,  the Company
shall  deliver  a  fully   executed   agreement  to  the  Purchaser   reasonably
satisfactory  to the Purchaser  whereby the Chairman of the Company,  Kenneth I.
Sawyer,  shall expressly (i) agree to the appointment referred to in Section 7.9
above; (ii) agree that he shall serve as the Chairman and Chief Executive

                                       22

<PAGE>

Officer of the Company and each of its Subsidiaries;  and (iii) acknowledge that
Section 7.9 hereof and this Section 7.10 hereof do not  constitute a breach or a
violation  by the  Employer  (as  such  term  is  used  in the  below  mentioned
Employment  Agreement) of the terms of his employment pursuant to the Employment
Agreement  between  the  Company  and  Sawyer,  dated as of October 4, 1992,  as
amended.

     7.11 Rights Agreement.  Each of the Company and First City Transfer Company
(as successor rights agent) shall, prior to the Closing,  execute and deliver an
amendment to the Rights Agreement, dated August 6, 1991, as amended (the "Rights
Agreement"),   exempting   from  operation   under  the  Rights   Agreement  the
acquisitions  of shares of  Common  Stock  pursuant  to this  Agreement  and the
Options. Such amendment shall be in full force and effect and constitute a valid
and  binding  agreement  of the  Company  enforceable  against  the  Company  in
accordance with its terms.

     7.12 U.S. Real Property Holding Corporation. From and after the date hereof
to the Closing Date or the earlier  termination  of this  Agreement  pursuant to
Section 13.11  hereof,  the Company  shall (a) use  reasonable  efforts to avoid
making  any  changes in the  composition  of its assets  which  would  cause the
Company to be classified as a United  States real property  holding  corporation
within the meaning of Section  897(c)(2)  of the Code and (b) obtain the consent
of the  Purchaser  prior to the  acquisition  of any United States Real Property
Interest (as defined in Section 897 of the Code).

     SECTION 8. Covenants of the Purchaser.

     The  Purchaser  (and the  Company  following  the  Closing,  to the  extent
expressly provided in this Section 8) hereby covenants as follows:

     8.1 Company  Designees.  For a period of three years following the Closing,
the Purchaser shall not cause, and shall use its best efforts not to permit, (i)
the removal, except for cause (as such term is defined and used under New Jersey
corporate  law),  of any of the Company  Designees  serving as  directors of the
Company prior to the scheduled  expiration of their terms or (ii) the shortening
of any of such  Designees'  terms as  directors.  In the event that any  Company
Designee shall resign or cannot otherwise  continue to serve as a director,  the
remaining Company  Designee(s) shall designate a replacement  therefor and, upon
such designation,  unless such designee shall not be reasonably  satisfactory to
the Purchaser,  the Company and the Purchaser  shall use their  reasonable  best
efforts to cause the appointment and/or election of such designated  replacement
to the Company's Board of Directors.  Such replacement directors shall be deemed
to be Company Designees for the purpose of this Agreement.

     8.2 No Modification. For a period of three years following the Closing, the
Purchaser  shall not cause,  and shall use its  reasonable  best  efforts not to
permit, the Company to agree to any amendment, modification or waiver of or take
any action in respect of this Agreement, the Distribution Agreement or the other
agreements referred to herein, including,  without limitation, in respect of any
agreement  or  settlement  relating  to a dispute  or claim for  indemnification
hereunder

                                       23

<PAGE>

or thereunder,  without the prior written  consent of at least a majority of the
Company  Designees  (including any replacements  therefor as provided in Section
8.1 hereof).

     8.3 Other Agreements. At the Closing, upon satisfaction or permitted waiver
of the  conditions  set forth in Section 5 hereof,  the Purchaser  shall pay the
Purchase  Price  and  execute  and  deliver  the  agreements,   instruments  and
certificates specified in Section 1.3(b) hereof.

     8.4 Related Party  Transactions.  For a period of three years following the
Closing, except as expressly permitted by this Agreement or any other agreements
referred to herein,  the Purchaser  shall not cause or permit the Company or its
Subsidiaries existing on the date of the Agreement,  directly or indirectly,  to
engage in or enter into any, or to amend or terminate any then validly existing,
transaction,  arrangement  or agreement  with,  or to make any  distribution  or
dividend of property or monies to, the  Purchaser or any  Affiliate or associate
(as defined in Rule 405 of the  Securities Act  ("Associate")  of the Purchaser,
without  the prior  written  consent  of a  majority  of the  Company  Designees
(including any replacements therefor as provided in Section 8.1 hereof).

     8.5  Business  Combinations.  For a period  of three  years  following  the
Closing,  neither the Purchaser nor any of its  Affiliates or Associates  shall,
without  the prior  written  consent  of a  majority  of the  Company  Designees
(including any replacements  therefor as provided in Section 8.1 hereof) and the
prior receipt from an independent  nationally  recognized  investment  bank of a
written  fairness  opinion to the effect that the proposed  transaction  is fair
(from a financial point of view) to all shareholders of the Company, (i) propose
that the Company, or cause or permit the Company to, merge, consolidate or enter
into any other  business  combination  with or into another  entity  (including,
without limitation,  any "short-form" merger), (ii) propose that the Company, or
cause or permit the Company to, sell, lease,  pledge or otherwise dispose of all
or any material portion of the assets of the Company,  (iii) propose or make, or
cause or permit the  Company to propose or make,  any  exchange  offer or tender
offer for, or repurchase  of, any securities of the Company or (iv) propose that
the  Company,  or cause or  permit  the  Company  to,  recapitalize,  liquidate,
dissolve  or, to the extent it would cause the Company not to be  publicly-held,
reorganize.

     8.6 Executive Committee. For a period of three years following the Closing,
the Purchaser shall cause the Company to, and the Company shall,  constitute and
maintain an executive  committee of the  Company's  Board of Directors to manage
the fundamental  matters  concerning the Company in the intervals  between Board
meetings, and each shall use its reasonable best efforts to cause Sawyer (or his
designee who shall be a member of the  Company's  Board of Directors) to be, and
remain for such period, a duly appointed, full member of such committee.

     SECTION 9. Transfer of Securities.  The  Purchaser,  for itself and each of
its Affiliates, agrees as follows:

     9.1 Transfer  Restrictions.  The  Purchaser  and its  Affiliates  shall not
transfer any of the Shares or the Option Shares unless such transfer shall be in
full  compliance  with all  applicable  provisions of the Securities Act and all
applicable provisions of state securities laws.

                                       24

<PAGE>

     9.2 Legends. Each certificate for the Shares and the Option Shares shall be
endorsed with the following legend:

         "THE SECURITIES  REPRESENTED  HEREBY HAVE NOT BEEN REGISTERED UNDER THE
         SECURITIES ACT OF 1933 OR UNDER ANY STATE  SECURITIES LAWS, AND MAY NOT
         BE SOLD,  TRANSFERRED,  PLEDGED OR OTHERWISE DISPOSED OF IN THE ABSENCE
         OF AN EFFECTIVE  REGISTRATION  STATEMENT UNDER  APPLICABLE  FEDERAL AND
         STATE SECURITIES LAWS OR AN OPINION OF COUNSEL REASONABLY  SATISFACTORY
         TO THE COMPANY  THAT THE  TRANSFER IS EXEMPT  FROM  REGISTRATION  UNDER
         APPLICABLE FEDERAL AND STATE SECURITIES LAWS."

     SECTION  10.  Exchanges;  Lost,  Stolen  or  Mutilated  Certificates.  Upon
surrender by the Purchaser (or Merck or Genpharm,  as applicable) to the Company
of any certificates  representing the Shares or the Option Shares,  the Company,
at its expense,  shall issue in exchange therefor,  and deliver to the Purchaser
(or  Merck or  Genpharm,  as  applicable),  a new  certificate  or  certificates
representing  such  Shares or Option  Shares,  in such  denominations  as may be
requested in writing by the  Purchaser  (or Merck or Genpharm,  as  applicable).
Every surrendered certificate representing the Shares or the Option Shares shall
be duly endorsed or be  accompanied by a written  instrument of the  Purchaser's
(or Merck's or Genpharm's,  as applicable)  attorney duly authorized in writing.
Upon  receipt  of  evidence  satisfactory  to the  Company  of the loss,  theft,
destruction or mutilation of any certificate  representing  any Shares or Option
Shares, and in case of any such loss, theft or destruction,  upon delivery of an
indemnity  agreement  satisfactory  to the  Company,  or in  case  of  any  such
mutilation,  upon surrender and  cancellation of such  certificate,  the Company
shall issue and deliver to the Purchaser (or Merck or Genpharm, as applicable) a
new  certificate  for such Shares or Option Shares of like tenor and in the same
amount and name in lieu of such lost, stolen or mutilated certificate.

     SECTION 11. Survival of  Representations,  Warranties and  Agreements.  The
representations  and warranties  (including the Schedules hereto) of the parties
contained herein and the agreements and covenants  contained in Section 7 hereof
(excluding Sections 7.3, 7.8 and 7.9 hereof) shall survive the date hereof for a
period  of 12  months  following  the  Closing  Date  (the  "Survival  Period");
provided, that (i) a party shall not be liable to the other party hereto for any
claim for  indemnification  under  Section 12 hereof in respect of a breach of a
representation  or warranty unless written notice thereof  describing such claim
with reasonable  specificity shall be delivered to the Indemnitor (as defined in
Section 12.1 hereof) prior to the expiration of the Survival Period and (ii) the
representations  and  warranties  relating to Taxes  contained  in Section  2.20
hereof  shall  survive  until  the  expiration  of the  appropriate  statute  of
limitation.

     SECTION 12. Indemnification.

     12.1  Indemnitors;  Indemnified  Persons.  For purposes of this Section 12,
each party  which,  pursuant to this Section 12,  agrees to indemnify  any other
person or entity shall be referred to as the

                                       25

<PAGE>

"Indemnitor"  with  respect to such  person or entity,  and each such  person or
entity who is indemnified shall be referred to as the "Indemnified  Person" with
respect to such Indemnitor.

     12.2 Company  Indemnity.  The Company  hereby  agrees to indemnify and hold
harmless each of the Purchaser and it Affiliates,  and its directors,  officers,
employees,  agents and controlling  persons (within the meaning of Section 15 of
the Securities  Act or Section 20(a) of the Exchange Act),  from and against any
and all claims,  liabilities,  losses, damages and expenses (including,  without
limitation,  reasonable  attorneys' fees and disbursements)  asserted against or
incurred by any such Indemnified Person which are caused by or are related to or
arise out of (a) subject to Section 11 hereof,  the Company's material breach of
any of its  representations,  warranties,  covenants or agreements  contained in
this  Agreement,  (b) any untrue  statement  or alleged  untrue  statement  of a
material  fact  contained  in the Proxy  Statement  or the  omission  or alleged
omission to state a material fact required to be stated  therein or necessary to
make the  statements  therein  not  misleading  (a  "Violation")  or (c) (i) any
material violation by the Company or any Subsidiary thereof of any Environmental
Laws,  or the  disposal,  discharge or release of solid  wastes,  pollutants  or
hazardous  substances,  whether in compliance  with  Environmental  Laws or not,
other than in respect of those  matters set forth on  Schedule  12.2 hereto (ii)
the ownership, operation or use of any landfill, wastewater treatment plant, air
pollution  control  equipment,  storage  lagoon  or other  waste  management  or
pollution control  facility,  whether in compliance with  Environmental  Laws or
not,  other than in respect of those  matters set forth on Schedule 12.2 hereto,
or (iii) exposure of any person to any chemical substances, noises or vibrations
generated by the Company,  any of its  Subsidiaries,  or any of their respective
predecessors,  whether in compliance with  Environmental Laws or not, other than
in  respect  of those  matters  set forth on  Schedule  12.2  hereto;  provided,
however, that no indemnification shall be provided hereunder for any decrease in
the  market  price of the  shares  of  Common  Stock  purchased  or owned by the
Purchaser  or  any  of  its   Affiliates;   and  provided,   further,   that  no
indemnification shall be provided hereunder with respect to the preceding clause
12.2(b) to the extent an untrue or  alleged  untrue  statement  or  omission  or
alleged omission was made by the Company in reliance upon and in conformity with
information  furnished  by or on  behalf of the  Purchaser  for use in the Proxy
Statement. The Company shall reimburse any such Indemnified Person for all costs
and expenses  (including,  without  limitation,  reasonable  attorneys' fees and
disbursements and costs of investigation)  incurred in connection with preparing
for,  bringing or  defending  any action,  claim,  investigation,  suit or other
proceeding,  whether or not in connection with pending or threatened litigation,
which shall be caused by or related to or arise out of the foregoing, whether or
not such Indemnified Person shall be named as a party thereto.

     12.3 Purchaser Indemnity. The Purchaser hereby agrees to indemnify and hold
harmless each of the Company, and its directors, officers, employees and agents,
from and against any and all claims,  liabilities,  losses, damages and expenses
(including, without limitation, reasonable attorneys' fees and disbursements and
costs of  investigation)  asserted  against or incurred by any such  Indemnified
Person  which are  caused by or are  related  to or arise out of (a)  subject to
Section  11  hereof,  the  Purchaser's  material  breach of any  representation,
warranty,  covenant or agreement of the Purchaser contained in this Agreement or
(b) a  Violation  to the extent  that such  Violation  shall occur in respect of
information furnished to the Company by or on behalf of the Purchaser for use in
the

                                       26

<PAGE>

Proxy Statement.  The Purchaser shall reimburse any such Indemnified  Person for
all costs and expenses  (including,  without limitation,  reasonable  attorneys'
fees and disbursements  and costs of investigation)  incurred in connection with
preparing for, bringing or defending any action, claim,  investigation,  suit or
other  proceeding,  whether or not in  connection  with  pending  or  threatened
litigation,  which  shall  be  caused  by or  related  to or  arise  out  of the
foregoing,  whether  or not such  Indemnified  Person  shall be named as a party
thereto.

     12.4 Defense.  Promptly after receipt by an Indemnified Person of notice of
any claim or demand or the commencement of any suit, action or proceeding by any
third party with respect to which indemnification may be sought hereunder,  such
Indemnified  Person  shall  notify in writing  the  Indemnitor  of such claim or
demand or the commencement of such suit, action or proceeding, but failure so to
notify the Indemnitor  shall not relieve the Indemnitor from any liability which
the Indemnitor may have hereunder or otherwise,  unless the Indemnitor  shall be
actually  prejudiced  by such failure.  If the  Indemnitor  shall so elect,  the
Indemnitor  shall  assume the defense of such  claim,  demand,  action,  suit or
proceeding,  including the employment of counsel reasonably satisfactory to such
Indemnified Person, and shall pay the fees and disbursements of such counsel. In
the event, however, that such Indemnified Person shall reasonably determine that
having common  counsel would present such counsel with a conflict of interest or
alternative  defenses  shall be  available  to an  Indemnified  Person or if the
Indemnitor shall fail to assume the defense of the claim,  demand,  action, suit
or  proceeding  in a timely  manner,  then such  Indemnified  Person  may employ
separate  counsel to  represent  or defend such  Person  against any such claim,
demand,  action,  suit or proceeding and the Indemnitor shall pay the reasonable
fees and disbursements of such counsel;  provided,  however, that the Indemnitor
shall  not be  required  to pay the  fees  and  disbursements  of more  than one
separate  counsel for all Indemnified  Persons in any jurisdiction in any single
action, suit or proceeding.  For any claim,  demand,  action, suit or proceeding
the defense of which the Indemnitor shall assume,  the Indemnified  Person shall
have the right to  participate  therein  and to retain  its own  counsel at such
Indemnified Person's own expense (except as otherwise  specifically  provided in
this Section 12.4),  so long as such  participation  does not interfere with the
Indemnitor's  control of such claim,  demand,  action,  suit or proceeding.  The
Indemnitor  shall not,  without  the prior  written  consent of the  Indemnified
Person,  settle or  compromise  or consent to the entry of any  judgment  in any
pending or  threatened  claim,  action,  suit or  proceeding in respect of which
indemnification  may be sought hereunder  unless such settlement,  compromise or
consent shall include an unconditional  release of such Indemnified  Person from
all liability arising out of such claim, demand,  action, suit or proceeding and
would not prohibit,  restrict or impair the Indemnified  Person from engaging in
any business.

     12.5 Purchaser Claims. If there shall be any claim for  indemnification  by
the Purchaser  under this Section 12 or under the  Distribution  Agreement,  all
determinations by the Company relating thereto,  including,  without limitation,
the choice and  engagement of counsel,  the defense  and/or  prosecution  of any
action and the terms and  conditions of any  settlement  or compromise  thereof,
shall be made solely by the Company Designees (by majority vote thereof).

     12.6 Exclusive Remedy. The parties hereto agree that the sole and exclusive
remedy and recourse with respect to any and all claims, suits, actions, demands,
liabilities, losses, expenses and

                                       27

<PAGE>

damages  relating  to or arising  out of the  subject  matter of this  Agreement
(excluding  the  Distribution  Agreement and the Services  Agreements)  shall be
pursuant,  and  subject,  to the  indemnification  provisions  set forth in this
Section 12, subject to the provisions of Section 13.11 hereof and except for the
remedy of injunctive relief set forth in Section 13.12 hereof.

     SECTION 13. Miscellaneous.

     13.1  Expenses.  The  parties  shall  bear  their own  respective  expenses
(including,  but not  limited to, all fees and  expenses  of counsel,  financial
advisers  and   independent   accountants)   incurred  in  connection  with  the
preparation,   negotiation  and  execution  of  this  Agreement  and  the  other
agreements   referred  to  herein  and  the  consummation  of  the  transactions
contemplated  hereby and thereby. To the extent that a Company Designee shall be
required  to make any  determination  or take any action  hereunder  (including,
without limitation,  with respect to indemnification  under Section 12 hereof or
reviewing  the  compliance of the  Purchaser  with its covenants and  agreements
contained herein) in his/her capacity as a Company Designee, the Purchaser shall
cause the Company to, and the Company shall,  promptly  reimburse and/or pay any
reasonable  out-of-pocket expenses incurred by the Company Designee in acting in
such capacity.  The Company Designees are intended third-party  beneficiaries of
this provision.

     13.2 Assignment; Binding Effect. All terms and provisions of this Agreement
shall be binding  upon and inure to the benefit of the parties  hereto and their
respective  successors and permitted assigns, but neither this Agreement nor any
of the rights,  interests or obligations  hereunder may be assigned or delegated
by any party  hereto  without  the prior  written  consent  of the other  party;
provided,  that the Purchaser  shall have the right to designate an Affiliate of
the  Purchaser  to  purchase  and take  delivery  of the  Shares at the  Closing
pursuant to Section 1.1 hereof.  The obligations and agreements of the Purchaser
hereunder shall succeed to and bind any purchaser or transferee,  whether or not
such  purchaser or  transferee  shall be an Affiliate of the  Purchaser,  of the
Shares and/or the Option Shares,  but shall also remain binding on the Purchaser
if the transferee is an Affiliate thereof.  Notwithstanding  the foregoing,  the
Options shall be at all times nontransferable and nonassignable by the Purchaser
or Genpharm.

     13.3 Entire Agreement. This Agreement (including the Exhibits and Schedules
hereto) and the other agreements referred to herein or delivered pursuant hereto
contain the entire  agreement  between the parties  with  respect to the subject
matter   hereof  and   thereof  and   supersede   all  prior   arrangements   or
understandings,  written  or oral,  with  respect  thereto,  including,  without
limitation,  the  Confidentiality  Agreement,  dated  December 16, 1997,  by and
between the parties.  The parties hereto agree that the only representations and
warranties  made in connection  with the  transactions  contemplated  hereby and
thereby are those  expressly  made in writing in this  Agreement.  The Purchaser
expressly  disclaims reliance upon any  representations or warranties other than
those expressly made in writing by the Company in this Agreement.  The Purchaser
acknowledges  and agrees  that it is  sophisticated  in matters  concerning  the
subject  matter of this  Agreement  and the  business of the  Company,  that the
Purchaser and the Company have an ordinary business relationship

                                       28

<PAGE>

of seller-purchaser and that no special relationship of trust exists between the
Purchaser and the Company which could give rise to a special duty of care.

     13.4 Notices. All notices hereunder shall be in writing and shall be given:
(a) if to the  Company,  at One Ram Ridge Road,  Spring  Valley,  New York 10977
(attention:  Kenneth I. Sawyer,  President), fax number: (914) 425-5097, or such
other address or fax number as the Company  shall have  designated in writing to
the  Purchaser in  accordance  with this Section  13.4,  with a copy to Hertzog,
Calamari &  Gleason,  100 Park  Avenue,  New York,  New York  10017  (attention:
Stephen  Ollendorff,  Esq.  and Stephen R.  Connoni,  Esq.),  fax number:  (212)
213-1199,  or (b) if to the Purchaser,  at c/o Merck KGaA,  Frankfurter  Strasse
250, 64271 Darmstadt Germany (attention:  Dr. Rudi Neirinckx), fax number 011 49
6151 72 3435, or such other  address or fax number as the  Purchaser  shall have
designated in writing to the Company in accordance  with this Section 13.4, with
a copy to Coudert  Brothers,  1114 Avenue of the  Americas,  New York,  New York
10036-7703  (attention:  Edwin  S.  Matthews,  Jr.,  Esq.),  fax  number:  (212)
626-4120.  Any notice shall be deemed to have been given if personally delivered
or sent by express  commercial  courier  or  delivery  service  or by  telegram,
telefax, telex or facsimile  transmission.  Any notice given in any other manner
shall be deemed given when actually received.

     13.5 Amendments;  Waiver.  Prior to the Closing,  this Agreement may not be
amended or, subject to Section 13.11 hereof, terminated, and no provision hereof
may be waived,  except pursuant to a written instrument  executed by the Company
and the Purchaser.  For a period of three years  following the Closing,  neither
this Agreement nor the Distribution  Agreement may be amended,  and no provision
hereof or thereof may be waived, without the prior written consent of at least a
majority of the Company Designees (on behalf of the Company) and except pursuant
to a written instrument executed by both parties.

     13.6 Counterparts. This Agreement may be executed in counterparts, and each
such  counterpart  shall be deemed to be an  original  instrument,  but all such
counterparts together shall constitute but one agreement.

     13.7  Headings.  The headings of the sections of this  Agreement  have been
inserted for  convenience of reference only and shall not be deemed to be a part
of this Agreement. As used herein, the phrase "to the Company's knowledge" shall
mean the actual knowledge of any of the executive officers of the Company only.

     13.8 Governing  Law. This  Agreement  shall be governed by and construed in
accordance  with the laws of the State of New York  applicable to contracts made
and to be performed wholly therein.

     13.9  Severability.  If any term or  provision  hereof  shall be invalid or
unenforceable,   (i)  the  remaining  terms  and  provisions   hereof  shall  be
unimpaired,  (ii) any such invalidity or  unenforceability  in any  jurisdiction
shall not invalidate or render unenforceable such term or provision in any other
jurisdiction and (iii) the invalid or  unenforceable  term or provision shall be
deemed replaced by a term

                                       29

<PAGE>

or  provision  as  determined  by a court to be  valid  and  enforceable  and to
express, to the fullest extent legally permissible, the intention of the parties
with respect to the invalid or unenforceable term or provision.

     13.10 Consent to  Jurisdiction.  In  connection  with any dispute which may
arise  under this  Agreement  or under any other  agreement  referred  to herein
(except for the Distribution Agreement),  each of the parties hereby irrevocably
submits to, consents to, and waives any objection to the exclusive  jurisdiction
of the courts of the State of New York  located in the County of New York and of
the United  States  District  Court for the Southern  District of New York,  and
waives  any  objection  to the laying of venue in such  courts.  Each such party
admits that any such dispute may be resolved at least as  conveniently in such a
court as in any other court,  and shall not seek  dismissal or a change of venue
on the ground that  resolution  of such a dispute in any such court shall not be
convenient or in the interests of justice. The Purchaser hereby appoints Coudert
Brothers  as its agent upon whom  service  of process  may be made with the same
force and effect as if such  service  shall have been made  personally  upon the
Purchaser. The Company hereby appoints Hertzog,  Calamari & Gleason as its agent
upon whom  service of  process  may be made with the same force and effect as if
such service shall have been made personally upon the Company.

     13.11 Termination.

     (a) This  Agreement may be  terminated  and the  transactions  contemplated
hereby  may be  abandoned  at any time prior to the  Closing:  (i) by the mutual
written  consent of the Purchaser and the Company,  (ii) by either party to this
Agreement,  if the  Shareholders'  Approval  shall not have been  obtained  with
respect to each of the  Proposals at the  Meeting,  including  any  adjournments
thereof,  (iii) by either  party to this  Agreement,  if there shall have been a
material breach of a representation  or warranty  contained in this Agreement by
the other  party,  or a material  breach by the other  party of any  covenant or
agreement  set forth herein and such breach shall not have been cured within ten
(10) days following the occurrence thereof,  and such shall not have been waived
by the other  party  hereto,  (iv) by  either  party to this  Agreement,  if the
Closing shall not have  occurred by July 15, 1998 or (v) by the Company,  if the
Board of Directors of the Company  determines in good faith,  after consultation
with outside  counsel,  that failure to terminate this Agreement  would create a
substantial  risk  of  liability  for  breach  of its  fiduciary  duties  to the
Company's shareholders under applicable law.

     Upon any such  termination,  all further  obligations  of the parties shall
become null and void and no party shall have any  liability  to the other party,
except that the  obligations of the parties hereto pursuant to Sections 6.2, 6.3
and 13,  including  Section  13.11(b),  hereof shall  survive  such  termination
indefinitely.

     (b)  Notwithstanding  anything to the contrary  contained  herein,  if this
Agreement (i) is terminated by either party  pursuant to Section  13.11(a) (iii)
hereof,  then the breaching party shall promptly pay to the non-breaching  party
in cash an amount equal to $750,000, or (ii) is

                                       30

<PAGE>

terminated  by the Company  pursuant to Section  13.11(a)  (v) hereof,  then the
Company  shall  promptly  pay to the  Purchaser  in  cash  an  amount  equal  to
$1,000,000.  The  parties  acknowledge  and agree  that the  provisions  of this
Section 13.11(b) provide for liquidated damages (and not a penalty) and shall be
the sole and exclusive remedy and recourse of the parties hereto in respect of a
termination of this Agreement pursuant to Sections 13.11(a)(iii) or (v) hereof.

     13.12 Injunctive Relief.

     (a) The Purchaser hereby acknowledges and agrees that a breach by it of its
covenants or agreements  hereunder will cause  irreparable  harm to the Company.
Accordingly,  the Purchaser  acknowledges  and agrees that a remedy at law for a
breach  of its  obligations  hereunder  (including,  but  not  limited  to,  its
obligations under Sections 6.3, 7.3 and 8 hereof) will be inadequate and agrees,
in the event of a breach or threatened breach by the Purchaser of the provisions
of this Agreement  (including,  but not limited to, its obligations  pursuant to
Sections  6.3, 7.3 and 8 hereof),  that the Company and, in the case of Sections
7.3, 8.1, 8.5 and 8.6 hereof,  the  shareholders  of the Company (other than the
Purchaser)  and the Company  Designees,  shall be  entitled,  in addition to all
other available remedies, to an injunction  restraining any actual or threatened
breach and/or the remedy of specific performance.

     (b) The Company hereby  acknowledges  and agrees that a breach by it of its
covenants or agreements  hereunder will cause irreparable harm to the Purchaser.
Accordingly,  the  Company  acknowledges  and agrees  that a remedy at law for a
breach  of its  obligations  hereunder  (including,  but  not  limited  to,  its
obligations  under Sections 6.3 and 7 hereof) will be inadequate and agrees,  in
the event of a breach or threatened  breach by the Company of the  provisions of
this  Agreement  (including,  but not  limited to, its  obligations  pursuant to
Sections  6.3, 7.3 and 7.8 hereof),  that the  Purchaser  shall be entitled,  in
addition to all other  available  remedies,  to an  injunction  restraining  any
actual or threatened breach and/or the remedy of specific performance.


                                       31

<PAGE>



     IN WITNESS WHEREOF, each of the undersigned has caused this Agreement to be
executed as of the date first written above.



                                                  PHARMACEUTICAL RESOURCES, INC.


                                                  
                                                  By: /s/ Kenneth I. Sawyer
                                                     ___________________________
                                                     Name: Kenneth I. Sawyer 
                                                     Title: President


                                                  LIPHA AMERICAS, INC.


                                                  By: /s/ Rudi Neirinckx
                                                     ___________________________
                                                     Name: Rudi Neirinckx
                                                     Title: Head, New Business
                                                            Merck KGaA



                                       32
<PAGE>




                                   Exhibit A

                             Distribution Agreement


                            [Intentionally Omitted]

<PAGE>



                                   Exhibit B

                              Services Agreements

                            [Intentionally Omitted]

<PAGE>

                                   Exhibit C

                                     Options

                            [Intentionally Omitted]

<PAGE>

                                   Exhibit D

                          Registration Rights Agreement

                            [Intentionally Omitted]


                                                                    Exhibit 10.2



     THIS  AGREEMENT  made as of this  25th day of March,  1998 (the  "Effective
Date"), by and between Pharmaceutical Resources, Inc., a New Jersey corporation,
with offices at One Ram Ridge Road,  Spring Valley,  New York,  United States of
America,  10977  (hereinafter  referred to as "Resources") and Genpharm Inc., an
Ontario corporation,  with offices at 85 Advance Road,  Etobicoke,  Ontario, M8Z
2S6, (hereinafter referred to as "Genpharm").

                                 R E C I T A L S

     WHEREAS  Genpharm and its Affiliates (as hereafter  defined) are engaged in
research,  development,  manufacture and distribution of pharmaceutical products
and have submitted to the United States Food and Drug Administration abbreviated
new drug  applications  (and/or  have  compiled  or intend to  compile  data for
submission of abbreviated new drug applications) for certain of the Products (as
hereafter defined);

     AND  WHEREAS,  as between  Genpharm  and its  Affiliates,  Genpharm has the
exclusive right to supply, market and distribute such Products in North America,
which right permits Genpharm to appoint distributors, exclusive or otherwise, in
respect  of all or any of the  Products  for  the  whole  or any  part  of  such
territory;

     AND  WHEREAS  Resources  and its  Affiliate  are  engaged  in,  inter alia,
manufacturing,   marketing  and  distributing  generic  pharmaceutical  products
throughout the Territory (as hereafter defined) and own and operate FDA approved
manufacturing  facilities  and  possess  qualified  marketing  and  distribution
systems  and   organizations  to  enable  it  to  repackage  bulk  Products  and
effectively  promote,   market  and  distribute  such  Products  throughout  the
Territory;

     AND WHEREAS  Genpharm  desires to grant to Resources the exclusive right to
purchase,  market,  promote and  distribute  the Products in the  Territory  and
Resources  desires to accept and exercise  such right,  all subject to the terms
and conditions set forth in this agreement;

     AND  WHEREAS  the parties  wish to enter into this  agreement  to set forth
herein the arrangements  regarding their respective  rights and obligations with
respect  to  the  development,  registration,  supply  and  distribution  of the
Products for the Territory;

     NOW THEREFORE the parties hereto agree as follows:


                                    ARTICLE 1
                         DEFINITIONS AND INTERPRETATION

1.1  Definitions:   Wherever  used  in  this  agreement  the  words  and  terms,
"Affiliate", "ANDA", "Applicable Percentage",  "Approved Listing Fee", "business
day", "CGMP", "Competing  Product",   "Confidential  Information",   "Deductible
Listing Fee",  "Development Cost", "Excess  Reprocurement  Costs", "FDA", "Gross
Profits", "Gross Sales", "Manufacturer", "Manufacturing Cost","Marketing Costs",
"Net  Sales",  "Person",   "Plant","Products",   "Product  Approval",   "Product
Information", "Product Manufacturing Requirements", "Recall", "Recall Expenses",
"Repackaging   Expenses",   "Specifications",    "Stock   Purchase   Agreement",
"Territory",  "Third Party Licensor",  "Third Party Royalty",  "Transfer Price",

<PAGE>

"Threshold  Amount" and "Unit"  shall have the  respective  meanings  set out in
Schedule "A" annexed hereto. In addition, words and expressions  parenthetically
defined elsewhere in this agreement shall,  throughout this agreement,  have the
meanings therein provided. Defined terms shall be used in the singular or in the
plural, as sense shall require.

1.2 Headings:  The headings of all Articles and Sections hereof are inserted for
convenience  of  reference  only,  are  not  intended  to be  full  or  accurate
descriptions  of the contents  hereof and shall not be  considered  part of this
agreement or affect the construction or interpretation of this agreement.

1.3 No Strict Construction:  The language used in this agreement shall be deemed
to be the language  chosen by the parties  hereto to express their mutual intent
and no rule of strict construction  against any party shall apply to any term or
condition of this agreement.

                                    ARTICLE 2
                              EXCLUSIVE APPOINTMENT

2.1 Exclusive  Distributor:  Subject to the  provisions of this agreement and to
the  receipt  by  Genpharm  or its  Affiliate,  as the case may be, of a Product
Approval for such Product,  Genpharm hereby  appoints  Resources as the sole and
exclusive  distributor  of the Products for the Territory  and Resources  hereby
accepts such  appointment and agrees to act as such sole  distributor  upon such
terms and  conditions.  Except  for its right to  delegate  to an  Affiliate  of
Resources any duty,  obligation  or right  hereunder in relation to a Product in
accordance  with the  provisions  of Section 14.8 below (but only for so long as
such Person remains an Affiliate of Resources),  Resources shall not delegate to
any Person any duty or  obligation  of  Resources  hereunder  in  relation  to a
Product  without the prior  written  consent of Genpharm  (which  consent may be
withheld in the sole discretion of Genpharm).

2.2 Additional  Products:  The parties may, by mutual  agreement,  add any other
generic  pharmaceutical  product to or delete a Product from this agreement and,
in such event,  the parties  shall date and initial such  alteration on Schedule
"B" for purposes of  identification  and  thereafter the terms of this agreement
shall  govern  the  products  so added and shall  terminate  in  respect  of the
products so deleted  (except to the extent of continuing  obligations  following
termination as hereinafter contemplated).  The foregoing right to terminate this
agreement  as regards a specific  Product by mutual  agreement is in addition to
and not in  substitution  or  derogation  of any right of a party  hereunder  to
unilaterally terminate this agreement as regards any Product pursuant to Section
3.4 or 3.7 or Article  10  hereof.  The  foregoing  right to add any  product by
mutual  agreement to Schedule "B" is in addition to and not in  substitution  or
derogation of the rights and  obligations  contemplated  in Sections 3.4 or 3.10
hereof.

2.3 Nature of  Relationship:  This  agreement does not constitute or create (and
the  parties  do  not  intend  to  create  hereby)  a  joint  venture,   pooling
arrangement,  partnership,  or formal business  organization of any kind between
and among any of the  parties,  and the rights and  obligations  of the  parties
shall  be only  those  expressly  set  forth  herein.  The  relationship  hereby
established  between  Resources and Genpharm is solely that of buyer and seller,
each is an independent contractor engaged in the operation of its own respective
business.  Neither party shall be considered to be an agent of the other for any
purpose  whatsoever.  Each party  shall be  responsible  for  providing  its own
personnel and workers'  compensation,  medical coverage or similar benefits, any
life, disability or other insurance protection;  and shall be solely responsible

                                       2
<PAGE>

for the payment of social security  benefits,  unemployment  insurance,  pension
benefits,    withholding   any   required   amounts   for   income   and   other
employment-related  taxes and benefits of its own employees,  and shall make its
own  arrangements  for injury,  illness or other  insurance  coverage to protect
itself; its Affiliates,  its subcontractors and personnel from any damages, loss
and/or liability arising out of the performance of this agreement. Neither party
has the  power or  authority  to act for,  represent,  or bind the other (or its
Affiliates) in any manner.

2.4 Territorial  and Product  Restrictions  Applicable to Resources:  During the
term of this agreement  applicable to a Product neither Resources nor any of its
Affiliates  will  directly  or  indirectly  sell  such  Product  outside  of the
Territory  or to any  Person in the  Territory  where it knows or has  reason to
believe  that  such  Product  will be  resold  by  such  Person  outside  of the
Territory.  In the event the foregoing provision is or becomes  unenforceable or
is  unlawful  in the  Territory,  then it shall be deemed  replaced  by the most
restrictive  provision  on  marketing  or sale  of the  Product  outside  of the
Territory  as shall be lawful and  enforceable  in the  Territory.  If  Genpharm
establishes  that  one  of  Resources'  customers  or a  customer  of any of its
Affiliates is exporting such Product out of the Territory,  Resources shall (and
shall cause its  Affiliates  to) either cease to supply such  customer or obtain
(and enforce,  if necessary) an  undertaking  from such customer not to sell the
Product  outside of the Territory  (unless  Resources [or its Affiliate,  as the
case may be] is precluded  from taking such action  under  applicable  law).  In
addition,  Resources shall not (and it shall not authorize, permit or suffer any
of its Affiliates to), directly or indirectly,  manufacture,  purchase,  sell or
distribute a Competing  Product in the  Territory at any time during the term of
this agreement applicable to a Product (including,  for greater certainty, prior
to receipt by Genpharm or any of its  Affiliate  of a Product  Approval for such
Product).

2.5 Product  Restrictions  Applicable to Genpharm:  Genpharm agrees that, during
the term of this  agreement  applicable to a Product,  neither it nor any of its
Affiliates shall, directly or indirectly,  sell such Product in the Territory or
to any Person  outside of the Territory  where it knows or has reason to believe
that such Product will be resold by such Person in the  Territory.  In the event
the foregoing provision is or becomes unenforceable or unlawful in the Territory
it shall be deemed to be replaced by the most restrictive provision on marketing
or sale of the Product in the Territory as shall be lawful or enforceable in the
Territory.  If  Resources  notifies  Genpharm  that one of its  customers  (or a
customer of its Affiliate) is marketing the Product in the  Territory,  Genpharm
shall (and shall cause its  Affiliates  to) either cease to supply such customer
or obtain (and enforce if  necessary) an  undertaking  from such customer not to
market such Product in the Territory (unless Genpharm [or its Affiliate,  as the
case may be] is  precluded  from  taking  such  action  under  applicable  law).
Genpharm  further  agrees that,  so long as Merck KGaA and its  Affiliates  hold
collectively at least 33-1/3% of the issued and outstanding shares of Resources'
common stock,  neither  Genpharm nor any of its Affiliates will sell,  market or
distribute  in the Territory  any generic  pharmaceutical  product which has the
same active  ingredient,  same strengths,  is in the same dosage form and is for
the same indication as a generic  pharmaceutical  product currently marketed and
distributed  by Resources  and its  Affiliates  in the Territory as described in
Schedule "C" annexed  hereto so long as Resources or any of its  Affiliates  are
actively  marketing  and selling such Product in the  Territory;  provided  that
where a product  identified on Schedule "C" is one in respect of which  Genpharm
or any of its  Affiliates  holds the ANDA approval and is being  distributed  by
Resources  and its  Affiliates in the  Territory  pursuant to an agreement  with
Genpharm or any of its Affiliates then Genpharm and its Affiliates shall be free
to sell, market and distribute such product in the Territory at such time as its
agreement  with  Resources  and its  Affiliates  terminates  in  respect of such
product or Resources  and/or its Affiliates'  exclusive right to distribute such


                                       3
<PAGE>

product  by or on  behalf  of  Genpharm  and  its  Affiliates  pursuant  to such
agreement is terminated in accordance with the provisions thereof.



                                    ARTICLE 3
                      PRODUCT DEVELOPMENT AND REGISTRATION


3.1 Obligations to Develop and Register Products:  Subject to Section 3.4 below,
Genpharm  shall, or shall cause its Affiliates to, use  commercially  reasonable
best efforts to develop the Products for the Territory in such order of priority
as is determined  by Genpharm and to submit ANDA's to the FDA to obtain  Product
Approvals  for  such  Products  as  soon  as  reasonably  practicable  following
successful  development,  provided  that Genpharm  shall have the right,  in its
discretion, to alter the priority to be given to development and/or registration
of the Products and nothing  herein  contained  shall  constitute a guarantee or
warranty of  Genpharm  that  development  of any Product  will be  commenced  or
continued,  that a  submission  for a Product  Approval for such Product will be
filed within any specific time period or that a Product Approval for any Product
will be obtained. Notwithstanding the foregoing, Genpharm and its Affiliate may,
at their  option,  in lieu of  independently  developing a Product  (directly or
through any other Affiliate) obtain a licence of the Product  Information of any
Person who is not an Affiliate of Merck KGaA (the "Third  Party  Licensor")  and
submit an ANDA for such Product based upon such licenced Product Information. It
is  understood  and agreed by  Resources  that where  Genpharm or its  Affiliate
licences its Product  Information  for a Product from a Third Party  Licensor it
may  be  required  to pay to  the  Third  Party  Licensor  a  royalty  or  other
compensation  (including,  without limitation,  profit sharing) for its right to
use such  Product  Information  (the  "Third  Party  Royalty").  Genpharm  shall
hereafter advise Resources of its intention or the intention of its Affiliate to
licence any Product  Information in relation to a Product for the Territory from
a Third Party Licensor and shall consult with  Resources  prior to entering into
any agreement with such Third Party Licensor to licence such Product Information
so that  Resources  shall be fully  informed  as to the nature and terms of such
relationship.


3.2  Development  Responsibility:  Subject to Section 3.4 below, it shall be the
responsibility   of  Genpharm  and/or  its  Affiliates,   (i)  to  complete  the
development of the Products in accordance  with the applicable  requirements  of
the FDA, (ii) where such development has been successfully completed, to file an
ANDA for the Product with the FDA and,  (iii) where an ANDA for such Product has
been  submitted,  to use  commercially  reasonable  efforts  to  ensure  that it
receives  a  Product  Approval  for such  Product  from the FDA on the  earliest
possible  schedule  given the FDA process.  It is understood and agreed that the
Product  Approval  granted  in  respect  of a  Product  will  be  registered  in
Genpharm's name or the name of one of its Affiliates.

                                       4
<PAGE>


3.3      Status Reporting: Genpharm shall from time to time:

         (i)      advise  Resources  in  writing  of  any  unforeseen   material
                  problems  or delays  encountered  or  additional  requirements
                  imposed upon  Genpharm or its  Affiliate,  as the case may be,
                  since  the  date of its last  report  in  connection  with the
                  development  and/or  registration  of a Product  (and of which
                  Resources  has not been  otherwise  advised  pursuant  to (ii)
                  below); and

         (ii)     provide  Resources  with such  information  as  Resources  may
                  reasonably  request in writing  from time to time with respect
                  to the  status of the  development  and/or  registration  of a
                  particular Product.

3.4 Right to Terminate  Obligations Prior to Product  Approval:  Notwithstanding
Section  3.1  hereof or any other  provision  contained  in this  agreement  but
subject to the  limitations  set forth in the final  sentence  of this  Section,
Genpharm shall have the right, upon written notice to Resources,  to immediately
terminate its obligations  hereunder to develop,  and/or seek a Product Approval
for a Product or Products if, in the reasonable  opinion of Genpharm,  it is not
commercially reasonable to develop such Product or to seek to obtain or maintain
a Product Approval therefor,  including, by way of illustration only and without
limiting the generality of the foregoing, by reason of:

         (i)      technical  factors  relating to the development of the Product
                  including,   without  limitation,   the  failure  of  clinical
                  trials/bioavailability   studies   previously   conducted   by
                  Genpharm or its Affiliate,  as the case may be, in relation to
                  the Territory or elsewhere or the  introduction  by the FDA of
                  new technical  requirements,  in each case,  which  materially
                  increase the cost of developing the Product or of obtaining or
                  maintaining a Product Approval therefore;

         (ii)     withdrawal from the market of the branded counterpart of the 
                  Product in the Territory;

         (iii)    the  existence of contra  indications  relating to the Product
                  not   currently   known   which  may   adversely   affect  the
                  marketability of such Product;

         (iv)     the high cost of manufacturing the Product;

         (v)      the  shortage  of supply  of the  active  ingredient  or other
                  components essential to the manufacture of such Product;

         (vi)     the  presence  or  anticipated   presence  on  the  market  of
                  Competing Products in the Territory at the time when a Product
                  Approval for such Product is expected to be obtained or within
                  a  reasonable  time  period  thereafter  which may  affect the
                  potential selling price of the Product or Resources' potential
                  share of the market having  regard for the volume  required to
                  obtain  reasonable  economies  of scale  for  Genpharm  or the
                  Manufacturer;

                                       5

<PAGE>

         (vii)    the  introduction  into the Territory of new branded  products
                  which   materially   adversely   affect  or  may   potentially
                  materially  adversely affect the market for the Product in the
                  Territory;

         (viii)   the  introduction   into  the  Territory  or  the  anticipated
                  introduction  into the  Territory  of a product  which has the
                  same active  ingredient  and is for the same  indication  as a
                  Product  but  which is in a  different  dosage  form and which
                  materially  adversely  affects  or  may  materially  adversely
                  affect the market for such Product in the Territory; or

         (ix)     the institution of any suit,  action or other legal proceeding
                  against  Genpharm  or its  Affiliates,  as the case may be, or
                  against any other Person  alleging that the development of the
                  Product  as  contemplated  by  Genpharm  or the  Affiliate  in
                  question  breaches the proprietary  rights of any Person which
                  proceeding, in the reasonable opinion of Genpharm, could delay
                  the ability of Genpharm or such  Affiliate to obtain a Product
                  Approval  for the  Product to a point in time where  marketing
                  the Product will no longer be economically feasible and/or the
                  costs  of  litigating,  even if  successful,  will  materially
                  adversely affect the potential economic benefit which Genpharm
                  or its Affiliate may derive  through the  distribution  of the
                  Product  pursuant  to this  agreement  or could  result in the
                  liability of Genpharm or such  Affiliate for material  damages
                  or affect  their  right to develop,  manufacture  or sell such
                  Product.

Upon the exercise of such right by Genpharm this agreement,  except Sections 3.5
and 3.6 below,  shall terminate in respect of the Product in question.  Provided
that if Genpharm  exercises the rights  hereunder to terminate this agreement as
regards  more than 10 of the  Products  to which this  agreement  applies on the
Effective Date then it shall,  upon any further  exercise of such right pursuant
to this Section,  substitute  for the Product in respect of which this agreement
is to be terminated (the "Replaced  Product") a generic  pharmaceutical  product
which  in  the  opinion  of  Genpharm,  acting  reasonably,  is  a  commercially
reasonable  substitute  (the  "Substitute  Product") for such Replaced  Product.
Genpharm shall consult with Resources prior to selecting the Substitute  Product
and shall advise Resources in writing of the identity of the Substitute  Product
within  30 days of the  exercise  of its right of  termination  as  regards  the
Replaced Product pursuant to this Section,  whereupon  Schedule "B" hereto shall
be amended by the addition of the  Substitute  Product,  which addition shall be
dated and  initialled by Genpharm and  Resources for purposes of  identification
and thereafter  this agreement shall apply to the Substitute  Product.  Genpharm
acknowledges  and agrees  that once a clinical  trial/bioavailability  study has
been  successfully  completed  with  respect  to a  Product  Genpharm  shall  be
obligated to file (or cause its Affiliate to file) an ANDA with the FDA for such
Product unless  Resources  consents to Genpharm (and its  Affiliates) not filing
such an ANDA,  which consent of Resources shall not be unreasonably  withheld or
unduly delayed.

3.5      Licence of Product Information to Resources:

(a)      If Genpharm  exercises its right pursuant to Section 3.4 for any reason
         (other  than  pursuant  to  Paragraphs  3.4  (iii)  or (ix)  above)  to
         terminate this agreement in respect of a Product,  Resources shall have
         the right for a period of 20 business days  following  receipt by it of
         the notice  contemplated  in Section 3.4 hereof to require  Genpharm to
         grant (or cause the  applicable  Affiliate  to grant) to  Resources  an
         exclusive licence upon the terms herein contemplated to use the Product

                                       6
<PAGE>

         Information  to  obtain a  Product  Approval  for such  Product  in the
         Territory  and to market and sell such  Product in the  Territory,  the
         right of  Resources  hereunder  to be exercised by notice in writing to
         Genpharm (which notice, to be effective,  shall reference this Section,
         shall  specify  the  Product to be  licenced  and shall be  received by
         Genpharm  within such 20 business day period).  The rights of Resources
         and the  obligations of Genpharm  pursuant to this Subsection (a) shall
         not  apply  to any  Products  in  respect  of  which  Genpharm  (or the
         applicable Affiliate,  as the case may be) licenses Product Information
         from a Third  Party  Licensor  if the  agreement  with such Third Party
         Licensor  prohibits Genpharm (or such Affiliate) from so licensing such
         Product  Information  to Resources  (whether  absolutely or without the
         consent of the Third Party  Licensor,  which consent  Genpharm (or such
         Affiliate)  has  been  unable  to  obtain  notwithstanding  its  use of
         reasonable commercial efforts to obtain such consent).

(b)      Following  the proper  exercise by Resources of its rights  pursuant to
         Subsection  (a) above,  Resources and Genpharm (on its own behalf or on
         behalf of its applicable Affiliate, as the case may be) shall negotiate
         in good faith the  provisions  of an  exclusive  licence  agreement  in
         relation to such Product  Information and the Product,  which agreement
         shall be executed and delivered by the licensor and Resources within 60
         days  of  the  receipt  by  Genpharm  of  the  notice  contemplated  in
         Subsection  (a) above or within 15 days of the final  determination  of
         the provisions of such licence  agreement as contemplated in Subsection
         (c) below.  Such agreement shall be prepared  initially by Genpharm and
         shall be  submitted  by  Genpharm  to  Resources  within 30 days of its
         receipt of such notice. Such agreement shall provide that:

         (i)      Resources  shall not have the right to sublicence  any Product
                  Information  or to  authorize  any other Person to use Product
                  Information  for any  purpose  (other  than to a Person who is
                  then  and  who  continues  thereafter  to be an  Affiliate  of
                  Resources and who agrees to be bound by the  provisions of the
                  licence agreement);

         (ii)     all  information,  tests  and  studies  not  contained  in the
                  Product  Information  and which are  required by  Resources to
                  obtain a Product  Approval for such Product shall be developed
                  and conducted by Resources  and/or its Affiliate at their sole
                  cost and expense;

         (iii)    the  licensor  will  answer  Resources'  reasonable  inquiries
                  concerning such Product  Information so as to enable Resources
                  to obtain a Product  Approval  for the Product in question but
                  it shall not be  required  to compile  or develop  information
                  which is not already available to or possessed by it;

         (iv)     Resources will not use the Product Information  licenced to it
                  pursuant hereto to obtain a regulatory  licence or approval to
                  market the Product  outside of the  Territory nor will it sell
                  such Product  outside of the Territory or to any Person in the
                  Territory  where Resources knows or has reason to believe such
                  Person will resell the same outside of the Territory  (and the
                  agreement will contain restrictions similar to those contained
                  in Section 2.4 hereof);


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                         ASTERISKS DENOTE SUCH OMISSION

         (v)      Resources  will pay to the licensor  (and to  Genpharm,  where
                  Genpharm is not the licensor,  in the proportions  directed by
                  Genpharm)  an aggregate  royalty  equal to [****] of the Gross
                  Profits derived from Net Sales of the licensed Product made by
                  or on behalf of Resources or its  Affiliates  in the Territory
                  (determined in the manner  contemplated in this agreement with
                  the proviso  that  Resources or its  Affiliates  manufacturing
                  cost of such product calculated in the manner  contemplated in
                  the definition  "Manufacturing Cost" herein contemplated shall
                  be treated as the Transfer Price hereunder),  provided that no
                  royalty  shall be payable  on Gross  Profits  earned  from Net
                  Sales of the licensed  Product until such Gross Profits exceed
                  an amount equal to the reasonable  Development  Costs incurred
                  by Resources and its Affiliates to develop such Product and to
                  obtain the Product Approval for such Product.

(c)      Such  agreement  shall also  contain  such other  terms and  provisions
         customarily  included in license agreements for product  information as
         Genpharm and  Resources  may mutually  agree upon and in the event of a
         dispute  between such parties as to the  inclusion of any  provision in
         such  agreement or the manner of expressing  any concept,  such dispute
         shall be resolved  through  arbitration  to be conducted in  accordance
         with the provisions of Article 13 hereof.

3.6 Withdrawal from Market:  If Genpharm  terminates this agreement with respect
to a Product  pursuant to Section 3.4 hereof and Resources does not exercise its
rights pursuant to Section 3.5 in respect of such Product then neither  Genpharm
nor its Affiliate will seek a Product  Approval for such Product for a period of
18 months from the date upon which this agreement  terminates in respect of such
Product  without  offering  Resources the right to reinstate  this  agreement as
regards such Product.

3.7      Election of Resources:

(a)      At least 90 days  prior  to  Genpharm  commencing  to  manufacture  the
         validation  batches  of the  Product  required  to obtain  the  Product
         Approval for such Product,  Genpharm shall notify  Resources in writing
         of its estimated  Transfer Price of such Product (it being acknowledged
         and agreed by  Resources  that  Genpharm  shall have no  obligation  to
         manufacture  or cause its  Affiliates  to  manufacture  the  validation
         batches  until such time as Resources  has waived in writing its rights
         with  respect to such  Product  pursuant  to  Subsection  (b) below and
         submitted  to  Genpharm  [or such right has expired  and  Resources  is
         deemed to have submitted to Genpharm  pursuant to Subsection (b) below]
         a  purchase  order  for  the  Product  to be so  manufactured  in  such
         validation batches).

(b)      Notwithstanding  the  provisions  of 2.1 hereof,  within 30 days of the
         receipt by  Resources  of the notice  contemplated  in  Subsection  (a)
         above,  Resources  shall have the  right,  to be  exercised  by written
         notice  to  Genpharm,  to  immediately  terminate  its  obligations  to
         distribute  such Product  hereunder  if, in the  reasonable  opinion of
         Resources:

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                         ASTERISKS DENOTE SUCH OMISSION

         (i)      it is not commercially  reasonable to sell and distribute such
                  Product by reason of those  factors,  events or  circumstances
                  contemplated in clauses 3.4 (ii), (iii), (vii) or (viii); or

         (ii)     the Gross  Profit  which may be  earned by  Resources  and its
                  Affiliates pursuant to this agreement from the distribution of
                  such  Product  will be less than [****] of Gross Sales  having
                  regard to the  estimated  Transfer  Price of the  Product  and
                  taking into  account the presence or  anticipated  presence in
                  the market of Competing  Products at the time when the Product
                  Approval  for such  Product  is  expected  to be  obtained  by
                  Genpharm or its  Affiliate or within a reasonable  time period
                  thereafter which may affect the potential selling price of the
                  Product or Resources' potential share of the market;

         Upon the exercise of such right by Resources,  this  agreement,  except
         Subsection  (c) below,  shall  terminate  in respect of the  Product in
         question.  In the event that  Resources does not exercise such right of
         termination   within   the   time  and  in  the   manner   hereinbefore
         contemplated, Resources shall be deemed to have placed a purchase order
         with Genpharm for the products  manufactured  as part of the validation
         batches, which products shall be made available to Resources for pickup
         as  contemplated  in Section 5.3 hereof as soon as  possible  following
         receipt  by  Genpharm  or  its  Affiliates  of  the  Product   Approval
         therefore.

(c)      If Resources  exercises the right  pursuant to Subsection  (b) above to
         terminate  this agreement in respect of a Product and within 30 days of
         Genpharm or its Affiliate receiving a Product Approval for such Product
         Genpharm, despite reasonable commercial efforts in that regard, remains
         unable to engage any other Person reasonably  acceptable to Genpharm to
         exclusively distribute such Product in the Territory on its behalf upon
         terms  and  provisions  at least as  favourable  to  Genpharm  as those
         contained  herein,  Resources  shall  pay  to  Genpharm  [****]  of the
         reasonable Development Costs incurred by Genpharm and its Affiliates to
         develop the Product and to obtain a Product  Approval for such Product.
         In addition,  Resources  shall not, and shall not authorize,  permit or
         suffer any of its Affiliates to sell,  market or distribute a Competing
         Product  in the  Territory  for a period of 3 years  from the date upon
         which  Resources  shall have  elected to  terminate  this  agreement in
         respect of such Product.

3.8      Representation and Warranties re Status:

(a)      Resources  represents  and warrants to Genpharm that neither it nor any
         of its  Affiliates is prohibited by any law,  rules or regulation or by
         any  order,  directive  or  policy  from  selling  any of the  Products
         (assuming  that the  Product  Approvals  have been  obtained)  or other
         pharmaceutical products within the Territory and that neither Resources
         nor any of its  Affiliates is a Person who is listed by a United States
         federal  agency as  debarred,  suspended,  proposed  for  debarment  or
         otherwise ineligible for federal programs in the United States or other
         jurisdictions within the Territory (an "Ineligible Person").

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(b)      Genpharm  represents  and warrants to Resources that neither it nor any
         of its  Affiliates  who  have  or are  developing  a  Product  for  the
         Territory  or who is or will be a  Manufacturer  thereof  is  currently
         prohibited by any law, rule or regulation or by any order, directive or
         policy  from  selling  the  Products   within  the  Territory  (on  the
         assumption  that it holds whatever  licenses are required for a foreign
         corporation to carry on business generally within such jurisdiction and
         holds Product  Approvals for such  Products) and that neither  Genpharm
         nor any such Affiliate is an Ineligible Person.

3.9 Expenses of Patent  Challenges:  Resources shall pay to Genpharm,  within 30
days of the receipt of an invoice  therefor  (which invoice shall be accompanied
with a copy of the third party  invoice  evidencing  the  expense in  question),
[****]  of the  legal  fees and  disbursements  and  other  reasonable  expenses
actually  incurred by Genpharm and its Affiliates to investigate  and defend the
claim of any Person  (hereafter  referred  to as a "Claim")  that the Product as
developed  by Genpharm  (and/or its  Affiliates)  infringes  any patent or other
proprietary right of such Person  enforceable in the Territory (such legal fees,
disbursements  and other  expenses  incurred by Genpharm and its  Affiliates  to
investigate  and defend a Claim being herein  referred to as the "Patent Defence
Expenses"). If  the  Patent  Defence  Expenses  incurred  by  Genpharm  and  its
Affiliates in respect of a Product exceeds [****] then, at any time  thereafter,
Resources  shall have the right  terminate its  obligation to fund [****] of any
future Patent  Defence  Expenses  incurred by Genpharm and its  Affiliates  with
respect to such  Product by notice in writing to  Genpharm (a  "Notice"),  which
Notice shall be effective  upon its receipt by Genpharm and shall  terminate the
obligation of Resources to fund any Patent Defence Expenses incurred by Genpharm
and its  Affiliates  with respect to such Product after the date upon which such
Notice is received by Genpharm  but,  for  greater  certainty,  Resources  shall
remain liable to Genpharm for [****] of the Patent Defence Expenses  incurred by
Genpharm and its  Affiliates to and including the date upon which such Notice is
so received by Genpharm. Termination by Resources hereunder of its obligation to
fund Patent Defence Expenses  incurred by Genpharm and its Affiliates in respect
of one or more  Products  shall not affect the  obligation  of Resources to fund
Patent Defence Expenses  incurred by Genpharm and its Affiliates with respect to
other  Products  (subject to Resources'  rights to terminate its  obligations to
fund such  expenses  with respect to any other Product or Products in accordance
with the provisions hereof).  The obligation of Resources to fund Patent Defence
Expenses  incurred in respect of a Product shall  terminate upon  termination of
this agreement in respect of such Product  provided that Resources  shall remain
liable to Genpharm  for the Patent  Defence  Expenses  relating to such  Product
incurred prior to such date of termination (to the extent it is otherwise liable
therefor), which liability shall survive the termination of this agreement. Upon
a written  request of  Resources  Genpharm  will  authorize  the lawyer or other
representative of Genpharm or its applicable Affiliate engaged in the defense or
investigation  of such Claim to discuss with and disclose to Resources  possible
future Patent Defense Expenses to be incurred in the investigation or defense of
the Claim.

3.10 Right of First Refusal - Development:  Resources acknowledges and agrees on
its own behalf and on behalf of its  Affiliates  that they shall not commence to
develop any generic  pharmaceutical  product for the  Territory not under active

                                       10
<PAGE>

development  by Resources or any of its Affiliates on the Effective Date without
first offering to Genpharm,  by notice in writing (which notice shall specify in
respect of such product,  its dosage form,  indications and strengths) the right
to develop such product  (either itself or through one of its  Affiliates) as an
additional product to which this agreement shall apply.  Genpharm shall,  within
45 days of the receipt of such notice, notify Resources whether or not it wishes
to add such product to this  agreement  (and,  in the absence of any such reply,
Genpharm shall be deemed to have declined such offer).  If Genpharm  declines or
is  deemed to have  declined  such  offer  Resources  and  Genpharm  (and  their
respective  Affiliates)  shall  each be free to  develop  such  product  for the
Territory free of any rights of the other. Subject to the final sentence of this
Section, if Genpharm accepts such offer within the time and in the manner herein
provided  such product  shall be added to Schedule "B" hereto as a product to be
developed for the Territory by Genpharm  and/or its  Affiliate  (which  addition
shall be dated and initialled by the parties for purposes of identification) and
thereafter the terms of this agreement shall govern such product.  Provided that
from and after the date, if ever,  upon which Merck KGaA and its Affiliates hold
collectively  less  than  33-1/3%  of  the  issued  and  outstanding  shares  of
Resources' common stock,  Resources shall have no further obligation pursuant to
this  section to offer to  Genpharm  the first right to develop  products  which
Resources and its Affiliates proposes to develop as herein  contemplated.  Where
Resources' proposes to develop such product and obtain an ANDA approval therefor
from the FDA based upon a licence of Product Information from a third party then
any  exercise  by Genpharm  of its right  pursuant to this  Section to have such
product added to this  agreement  shall be null and void (and such product shall
not be added to this  agreement  with each such party being free to develop such
product independently as hereinbefore contemplated) if Resources, within 60 days
of the  exercise  by Genpharm of such right  hereunder,  can provide  reasonable
evidence that Genpharm and its Affiliates do not have the ability to develop and
have such product available to market within a reasonably comparative time frame
to that within which  Resources could  reasonably  develop and have such product
available to market based upon the third party's licenced information.


                                    ARTICLE 4
                        MANUFACTURE AND SUPPLY OF PRODUCT


4.1  Exclusive  Supplier:  Subject to receipt by Genpharm or its  Affiliate of a
Product  Approval  for a  Product  Genpharm  shall use  commercially  reasonable
efforts to manufacture (or cause to be manufactured) and supply to Resources, in
accordance  with the  terms and  conditions  set  forth  herein  and in a timely
fashion,  reasonable  quantities  of such  Product.  Resources  shall order from
Genpharm  all of its and its  Affiliate's  requirements  of the  Product for the
Territory in accordance with the terms and conditions set forth herein.

4.2 Manufacturing Responsibilities:  Each Product supplied by Genpharm hereunder
shall be manufactured  (which shall include,  without  limitation,  all testing,
bulk packaging and labelling) in an FDA approved facility and in accordance with
the following (collectively, the "Product Manufacturing Requirements"),  (i) the
Specifications  for the  Product,  (ii)  applicable  cGMP  and  good  laboratory
practices and (iii) all other applicable rules,  regulations and requirements of
the FDA relative to the manufacture of such Product.

4.3 Storage of Products Pending  Shipment:  The finished bulk Product to be made
available  to  Resources  hereunder  shall be  stored  by  Genpharm  and/or  the
Manufacturer,  pending shipment,  in accordance with the Specifications for such
Product and applicable cGMP.

                                       11
<PAGE>

4.4 Quality Control and Assurances and Release Documentation: Genpharm shall or,
shall cause the  Manufacturer  to, perform all in-process  quality control tests
and  quality  assurance  reviews  on the  Product  as  required  by the  Product
Manufacturing  Requirements  and  shall,  or shall  cause the  Manufacturer  to,
certify in writing that each batch of the Product  delivered  to  Resources  was
manufactured in strict  conformity with the Product  Manufacturing  Requirements
and the other terms of this agreement.

4.5 Product  Warranty:  Genpharm  warrants  that all  Product  supplied by it to
Resources  pursuant to this agreement shall be manufactured,  packaged,  tested,
stored and handled in accordance with the Product Manufacturing Requirements and
that at the time of the delivery of such Product to the carrier at Genpharm's or
the  Manufacturer's  Plant,  as the case may be, such  Product:  (i) will not be
adulterated  or  misbranded  within the  meaning of the Federal  Food,  Drug and
Cosmetic Act ("Act"),  as amended, or within the meaning of any applicable state
or municipal law in which the  definitions of  adulteration  and misbranding are
substantially  the same as those contained in the Act, as such Act and such laws
are  constituted  and  effective at the time of delivery and (ii) will not be an
article which may not, under the provisions of Sections 404 and 505 of such Act,
be introduced into interstate  commerce.  NEITHER  GENPHARM NOR THE MANUFACTURER
MAKES ANY REPRESENTATION  THAT THE PRODUCT IS USEFUL FOR THE INTENDED PURPOSE OR
THAT IT IS FREE FROM INHERENT SIDE EFFECTS EXCEPT AS EXPRESSLY SET FORTH IN THIS
AGREEMENT.


                                    ARTICLE 5
                   PRODUCTION FORECASTS, ORDERS AND DELIVERIES

5.1 Forecasts and Commitments:  To assist Genpharm to schedule production of the
Products,  Resources  shall  provide to  Genpharm  (or as it  directs)  for each
Product to be manufactured  and supplied to Resources  hereunder,  quarterly (at
least  45 days in  advance  of the  commencement  of the  first  calendar  month
forecasted  thereunder),  a 12 month rolling  forecast of  Resources'  estimated
requirements  of the Product,  which  forecast  shall  represent a commitment of
Resources  to purchase  the  quantity of Product  projected  for the first month
thereunder and a commitment, subject to a 20% variance, to purchase the quantity
of Product  forecasted  for the second and third months  forecasted  thereunder.
Subject to the foregoing,  all forecasts are estimates only and Resources  shall
only be bound to purchase the Product pursuant to purchase orders submitted,  or
deemed  hereunder  to be  submitted,  by it to  Genpharm  (or to such  person as
Genpharm  may  direct).  All  purchase  orders for a Product  shall  specify the
delivery  date  therefor,  which  delivery date shall be no sooner than 16 weeks
following  the receipt of such order by Genpharm or such other period of time as
Genpharm  shall  specify in writing to Resources  within a reasonable  period of
time following  receipt by Genpharm or the  Manufacturer of the Product Approval
for such  Product.  Resources  shall  deliver the first such  forecast  within a
reasonable period of time following receipt of such Product Approval by Genpharm
or the Manufacturer and shall deliver the updated and extended forecasts every 3
months thereafter.

5.2 Purchase  Orders:  All orders for Product  shall be placed using  Resources'
standard form of purchase order and shall be invoiced using Genpharm's  standard


                                       12
<PAGE>

form of invoice.  All purchase orders  submitted by Resources shall  contemplate
the purchase of Product in minimum batch sizes as contemplated in the applicable
Product  Approval or multiples  thereof  (unless  Genpharm  agrees in writing to
smaller  quantities  [either generally or in respect of any particular  purchase
order]) and shall specify,  amongst other things, the required delivery date. In
the event of any conflict  between the terms of any purchase order and the terms
of any invoice related thereto, the terms of the purchase order shall govern. In
the event of any conflict  between the terms of any purchase order and the terms
of this agreement,  the terms of this agreement shall govern (unless the parties
shall have mutually agreed to the contrary in writing in respect of a particular
instance).

5.3      Delivery of Product:

(a)      Products  shall be made  available  to  Resources  for  pickup  in bulk
         containers  (where  applicable)  at  Genpharm's  or the  Manufacturer's
         Plant, as the case may be.  Resources shall arrange for shipping and/or
         transportation  of the Products  from such Plant to  Resources'  Spring
         Valley,  New York  facility  and pay all  shipping  and related  costs,
         including insurance,  and any customs duties and other taxes imposed on
         the  importation of the Product into the Territory.  Genpharm shall (or
         shall cause the  Manufacturer to) promptly notify Resources by fax that
         any order (or part  thereof) is available for pick-up at its or at such
         Manufacturer's Plant (this notice shall hereafter be referred to as the
         "Availability  Notice").  Resources  shall  use  reasonable  commercial
         efforts to pick up the Products that are the subject of an Availability
         Notice within 10 business days of receipt of the  Availability  Notice;
         provided  that,  if such  pickup  has not  occurred  on or prior to the
         expiry of such 10 day  period,  Resources  shall,  for  purposes of its
         payment obligations to Genpharm pursuant to Sections 6.1 and 6.2 below,
         be deemed to have picked up the  Products  which are the subject of the
         Availability  Notice on the last business day of such 10 day period. If
         the  Products  in  question  have not been picked up by or on behalf of
         Resources within 20 business days of an Availability  Notice,  Genpharm
         may, but shall not be obligated  to, cause the Products to be delivered
         to Resources' Spring Valley, New York, facility at Resources' sole cost
         and  expense and risk of loss and title to the  Products  shall pass to
         Resources   upon  pickup  of  the  Products  at   Genpharm's   or  such
         Manufacturer's  Plant, as the case may be, in the same manner as if the
         pickup had been  effected by Resources  itself,  provided that Genpharm
         shall  provide  for the  Products  to be  insured  during  transit in a
         commercially reasonable manner at Resources' sole cost and expense.

(b)      Genpharm shall, or shall cause the Manufacturer to, supply to Resources
         all   documentation   necessary   to  export  such   Product  from  the
         jurisdiction where its Plant is located and all documentation  required
         by Resources  to import such  Product into the  Territory to the extent
         that  same is  available  to  Genpharm  (or  such  Manufacturer)  or is
         reasonably capable of being generated by it.

(c)      Risk of loss and title to the  Products  shall pass to  Resources  upon
         pickup of the Product by, on behalf of, or for the account of Resources
         at Genpharm's or such Manufacturer's Plant as aforesaid.

(d)      Products supplied by Genpharm hereunder shall have a minimum shelf life
         of 20 months which shall run from the date that the Availability Notice
         in respect of such Product is received by Resources.

                                       13
<PAGE>

5.4  Cancellation of Order:  Notwithstanding  anything herein  contained,  if an
Availability  Notice in respect of any Product  subject to a purchase  order has
not been given within 60 days  following the required  delivery  date  hereunder
Resources  shall be entitled to cancel such order (or portion thereof in respect
of which no  Availability  Notice  has so been  given) by notice in  writing  to
Genpharm.

5.5  Documentation to Accompany  Deliveries:  All deliveries of Product by or on
behalf of Genpharm  shall be  accompanied  by all  documentation  required under
applicable  law to import  the  Product  into,  and for  Resources  to offer the
Product for sale in, the Territory  including,  without limitation,  any quality
assurance  or quality  control  audit  results  and/or  certifications  that the
Product  Approval  for the Product  have been audited to ensure that any Product
supplied  hereunder has been manufactured in conformity with cGMP and applicable
FDA regulations.

5.6 Assistance  With Export & Import Laws:  Resources and Genpharm shall provide
such commercially reasonable assistance as the other may request relative to the
exportation or importation of Products not expressly provided in this agreement.


                                    ARTICLE 6
                           PAYMENTS, REPORTS AND AUDIT


6.1      Purchase Price:

(a)      The purchase  price payable by Resources for Product  supplied to it by
         or on behalf of Genpharm  shall be the  aggregate  of (i) the  Transfer
         Price of such Product and (ii) the additional  consideration to be paid
         to  Genpharm  pursuant to Section 6.3 hereof in respect of Net Sales of
         such Product.

(b)      In addition to such purchase price  Resources  shall pay all applicable
         sales tax, use tax,  consumption  tax,  goods and services  tax,  value
         added tax or similar tax, imposts or duties levied upon the sale of the
         Product by Genpharm to Resources  whether  that tax,  impost or duty is
         levied  under the laws of the  jurisdiction  where  the  Manufacturer's
         Plant is located or the  jurisdiction  where  Resources  or Genpharm is
         located  (or of any  state,  province,  territory  or  other  political
         subdivision thereof) and whether it is currently in force or comes into
         force after the Effective Date of this agreement.

(c)      The Transfer Price shall be invoiced and all payments  hereunder  shall
         be made in U.S. dollars.  Any costs or expenses which are to be paid by
         Resources   hereunder  or  which  were   incurred  by  Genpharm  (or  a
         Manufacturer, as the case may be) in a currency other than U.S. dollars
         shall be converted into its U.S.  dollar  equivalent in accordance with
         the usual  procedures  therefore  used by  Genpharm  or the  applicable
         Manufacturer in determining its Manufacturing Costs.

6.2 Invoicing  and Payment:  Genpharm  shall invoice  Resources for the Transfer
Price of the  Product  at the time such  product is picked up or is deemed to be
picked up by or on behalf of Resources as  contemplated in Section 5.3 hereof or

                                       14
<PAGE>

within a reasonable  period of time thereafter.  The Transfer Price shall be due
and payable within 45 days following the date of such invoice.  Each shipment of
Product to Resources shall constitute a separate sale,  obligating  Resources to
pay the  purchase  price  therefor,  whether  such  shipment be in whole or only
partial fulfilment of any order.

6.3      Additional Consideration:

(a)      As additional  consideration  for the Products  Resources  shall pay to
         Genpharm the Applicable  Percentage of the Gross Profits arising out of
         Net Sales in the  Territory by Resources or its  Affiliates  of Product
         supplied by or on behalf of Genpharm pursuant hereto,  which additional
         consideration  shall be paid to Genpharm as part of the purchase  price
         for the  Product  sold and shall not be treated as a royalty or similar
         payment.

 (b)     The payment to Genpharm of its share of Gross  Profits shall be made in
         U.S  dollars.  For the  purposes  of  determining  Gross  Profits,  any
         delivery  costs or other  expenses  incurred  by  Resources  which  are
         relevant to the  calculation  of Gross Profits and which are payable or
         were paid in a currency other than U.S. Dollars shall be converted into
         their U.S. dollar  equivalent  based upon the rate of exchange  between
         the  currency  in  question  and U.S.  dollars as  reported in the Wall
         Street  Journal on the 2nd business day  preceding the day on which any
         such payment on account of Gross Profits is due.

6.4  Payment  of  Additional   Consideration  and  Accompanying   Documentation:
Genpharm's  share  of  Gross  Profits  shall be paid by  Resources  to  Genpharm
quarterly,  within 30 days following the end of each calendar quarter (being the
last day of March,  June,  August and December in each year) with respect to Net
Sales made by Resources or its Affiliates of such Products  during such calendar
quarter.  Each such payment shall be  accompanied by the following in respect of
each Product supplied by or on behalf of Genpharm:

(a)      a sales summary  reasonably  satisfactory to Genpharm showing all sales
         of such Product by Units  (sku's) and dollars made by Resources and its
         Affiliates during the quarter in question;

(b)      a detailed statement showing all returns, adjustments, credits, rebates
         and other debits and credits  relevant to the  calculation of Net Sales
         of such Product for the quarter in question together with copies of all
         documentation  to support  allowable  deductions  used in computing Net
         Sales during such quarter;

(c)      a detailed statement showing Repackaging Expenses,  Recall Expenses and
         Excess Reprocurement Costs incurred by Resources and its Affiliates and
         duties and taxes  recovered by Resources and its  Affiliates  which are
         relevant  to the  calculation  of  Gross  Profits  for the  quarter  in
         question;

(d)      a  certificate  signed  by the Chief  Financial  Officer  of  Resources
         certifying that, to the best of his knowledge,  information and belief,
         after reasonable  investigation,  the foregoing statements contemplated
         in (a),  (b) and (c)  above  are true and  correct  and do not omit any
         material  information required to be provided pursuant to this Section;
         and

(e)      a summary of the  calculation of the Gross Profits  payable to Genpharm
         on such date.

                                       15
<PAGE>

For purposes of this  agreement a sale shall be  considered to have been made at
the  time the  Product  is  shipped  by  Resources'  or its  Affiliate's  to its
customer.  For purposes of computing Net Sales, all sales and other transactions
between Resources and its Affiliates shall be disregarded.

6.5 Additional Information:  Resources shall provide to Genpharm and shall cause
its Affiliates to provide to Genpharm,  promptly  following a request  therefor,
such  additional   information  concerning  any  sales  of  a  specific  Product
(including,  without  limitation,  in  respect  of any  sale,  the  date  of the
shipment,  the name of the customer, the number of Units of the Product (by sku,
if  requested)  sold to such customer and the invoice price charged by Resources
or its Affiliates), chargebacks, credits, returns, adjustments and other credits
and debits relevant to the calculation of Net Sales and Gross Profits in respect
of a Product  including  information  relating to Repackaging  Expenses,  Recall
Expenses and Excess  Reprocurement Costs incurred in or applicable to any period
in respect of such Product, as Genpharm may reasonably request.  Genpharm shall,
or shall cause the applicable  Manufacturer  to, provide to Resources,  promptly
following  a  request  therefor,  such  additional  information  concerning  the
calculation of the Transfer Price of Products  previously  supplied to Resources
hereunder as Resources may reasonably request.

6.6 Interest:  All payments to be made to Genpharm  under this  agreement  shall
bear interest from and after the  Applicable Day (as that term is defined below)
until  paid at the  annualized  rate  equal  to the  daily  (as at the  close of
business  on each such day) prime rate as quoted  from time to time by  Citibank
N.A., New York, New York plus 5%, compounded daily. For purposes of this Section
the term "Applicable Day" shall mean:

         (i)      where the  payment is on account  of the  Transfer  Price of a
                  Product  which has not been made on its due date and Resources
                  has not on 2 or more  occasions  during the same calendar year
                  failed to pay a Transfer Price to Genpharm on its due date, 30
                  days after the due date therefore;

         (ii)     in any other case, the due date therefore.

6.7 Maintenance of Records:  Each of Genpharm and Resources agrees that it shall
keep (and shall cause its  Affiliates to keep)  complete and accurate  books and
records of account  containing all information  required for the computation and
verification  of all amounts on which  payments  hereunder  are based and shall,
upon reasonable  written notice from the other,  make such records available for
examination by such other party or, at the requesting  party's  expense,  supply
copies of such records to such other party.

6.8 Examination of Records: Each of Genpharm and Resources shall have the right,
upon  reasonable  written  notice to the  other,  to  designate  an  independent
certified  public or  chartered  accountant  (except one to whom the other has a
reasonable  objection)  to have access  during  ordinary  working  hours to such
records as may be necessary to audit the  correctness of any invoice,  report or
payment made under this  agreement.  Genpharm and  Resources  shall  provide and
shall cause its  Affiliates  to provide to the  accountant  engaged by the other
full and complete access to their pertinent books and records. In the event that
any accountant  shall have questions  which are not in his judgment  answered by
such books and  records,  the  accountant  shall  have the right to confer  with
representatives of the Person whose books and records are under review including
its Chief Financial Officer.  If any audit under this Section 6.8 shall reveal a

                                       16
<PAGE>

discrepancy  by more than 3% of any amount  payable  hereunder or $10,000.00 US,
whichever   is   greater,    the   costs   and   expenses   relating   to   such
investigation/audit  shall be  borne by the  party  creating  such  discrepancy.
Genpharm and Resources shall each have the right to audit such books and records
of the other  pursuant  to this  Section  6.8 no more  often  than  twice in any
contract  year (as  hereinafter  defined)  unless in any of the prior 3 contract
years such  investigation  revealed a discrepancy  by more than 3% or $10,000.00
US, as aforesaid,  in which case  Genpharm or Resources  shall have the right to
audit such books and records of the other 3 times in such contract year. For the
purposes  hereof,  a contract year shall be a period of 12 months  commencing on
the Effective Date of this agreement or on an  anniversary  thereof.  Any Person
whose books and records are to be audited in accordance  with the foregoing may,
as a condition  to  providing  any  accountant  access to its books and records,
require such accountant to execute a reasonable confidentiality agreement.

6.9 Survival of  Obligation:  The obligation to make the payments and to provide
the  reports  contemplated  in this  Article 6 and the rights of  Resources  and
Genpharm  to conduct  audits or  investigations  pursuant  to Section 6.8 hereof
shall survive the  termination or expiration of this agreement or thereafter and
shall apply to all  Products  supplied to  Resources by or on behalf of Genpharm
pursuant  hereto prior to the effective date of the termination or expiration of
this  agreement or  thereafter  notwithstanding  that such Product may have been
resold by Resources or its Affiliates to its customers  after the termination or
expiration of this agreement. For greater certainty, the parties acknowledge and
agree that  Resources  shall pay to Genpharm the  Applicable  Percentage  of the
Gross Profit  derived from Net Sale of all Products  supplied by or on behalf of
Genpharm to Resources  pursuant to this agreement  irrespective  of whether such
Product is resold by Resources or its  Affiliate  prior to or  subsequent to the
termination or expiration of this agreement.

                                    ARTICLE 7
                          REPACKAGING AND DISTRIBUTION


7.1      Resources' Repackaging Responsibilities:

(a)      Resources  shall  repackage  and  relabel  the  Product  into  finished
         labelled  Units for sale in the  Territory in an FDA approved  facility
         and shall be solely  responsible  for the  contents  of the  labels and
         artwork on all Units of finished  labelled  Product  sold or  otherwise
         released by Resources (except for information  contained in such labels
         which are also contained on the labels of the bulk Product  supplied by
         or on behalf of Genpharm to Resources pursuant hereto).  In repackaging
         and  relabelling  the  Product  Resources  shall  comply  with  (i) the
         Specifications for such Product, (ii) applicable FDA cGMP and (iii) all
         other applicable rules, regulations and requirements of the FDA and any
         other  applicable  governmental  or  regulatory  bodies,  agencies  and
         officials in the Territory relative to repackaging and labelling of the
         Product for sale in the Territory.  All labels and all artwork concepts
         on  all  packaging  material  used  by  Resources  in  connection  with
         relabelling  and  packaging of a Product  shall be subject to the prior
         reasonable approval of Genpharm, provided that the approval by Genpharm

                                       17
<PAGE>

         of any label or artwork  concept shall not relieve or otherwise  affect
         Resources'  obligations  or  responsibilities  hereunder in relation to
         relabelling  and  packaging of the Product or arising out of the use of
         such  labels or  packaging  material  or the  release of Product in the
         Territory  so  labelled  and  packaged  (or  impose any  obligation  or
         responsibility  on Genpharm in connection with such labels or packaging
         material or their use or release,  as  aforesaid,  except as  expressly
         contemplated   above  with  respect  to  the  contents  of  information
         contained  on  the  labels  which  was  provided  by  or on  behalf  of
         Genpharm).

(b)      Genpharm shall, or shall cause the Manufacturer to, supply to Resources
         all information and data relating to a Product which it is obligated to
         provide to Resources and its  Affiliates as a repackager and relabeller
         of such Product pursuant to applicable  laws.  Genpharm shall, or shall
         cause the  Manufacturer  to,  deliver  to  Resources,  upon  reasonable
         request of Resources,  a copy of all  correspondence  which it receives
         from or forwards to the FDA or other regulatory  authority with respect
         to a  Product  following  receipt  of  its  Product  Approval  therefor
         provided  that  such  correspondence  does  not  contain   Confidential
         Information  of  Genpharm  or such  Manufacturer  which it  desires  to
         maintain  confidential and which it is not obligated by law to disclose
         to Resources.

7.2  Resources'  Obligation re Marketing:  Resources shall use  reasonable  best
commercial efforts (utilizing its marketing, distribution and management systems
and  those of its  Affiliate)  to  develop  a  market  for the  Products  in the
Territory and to actively and  continuously  promote the sale of the Products in
the  Territory,  such efforts shall be not less than those used by Resources and
its  Affiliates  to  promote  the  sale of other  products  which  they  market.
Resources  shall be solely  responsible  for  advertising  and  promotion of the
Product and shall comply with all applicable laws, rules and regulations in that
regard including, without limitation, applicable FDA regulations and guidelines.

7.3 Pricing:  Resources  shall have sole discretion in setting the price for the
sale of the Products in the  Territory,  provided that it shall not discount the
price of any Product to enhance the sale of Resources' or any of its Affiliates'
Other  Products  (as that term is  defined  below) or use any  Product as a loss
leader or incentive to procure the sale of Resources' or any of its  Affiliates'
Other Products (including,  without limitation,  through tied or bundled sales).
Rebate and other discount  programs  (excluding  any pricing  programs where the
price of the Product is  discounted  to enhance the sale of Resources' or any of
its Affiliates' Other Products or where a Product is used as such loss leader or
incentive  or to  procure  the  sale  of  Resources'  or its  Affiliates'  Other
Products)  generally  available to  Resources' or its  Affiliates'  customers in
connection with the purchase of pharmaceutical  products shall not be prohibited
by this Section.  Any discounts to a price below what is reasonably necessary to
secure sales of any Product or  discounts  that are used to secure sale of Other
Products of Resources' or its Affiliate's  (through  bundled sales or otherwise)
will be fully  absorbed  by  Resources  out of its  share of  Gross  Profits  in
relation to the Product or will be charged to those Other  Products of Resources

                                       18
<PAGE>

or its Affiliates that are in the product bundles,  as the case may be, and will
not directly or indirectly reduce  Genpharm's share of Gross Profits  hereunder.
For  purposes  of this  Section  7.3,  the  term  "Other  Products"  shall  mean
pharmaceutical  products  sold,  marketed  and  distributed  by Resources or its
Affiliates other than the Products.

7.4 Storage and Handling by Resources:  Resources shall ensure that all Products
made available to it by or on behalf of Genpharm  pursuant to this agreement are
transported,  received,  handled,  stored and delivered in  accordance  with the
Specifications  for the Product applicable thereto and applicable cGMP and other
FDA requirements  (and the requirements of all other applicable  governmental or
regulatory  bodies,  agencies  or  affiliates  in the  Territory)  so that  such
Products  do  not  become   adulterated   or  otherwise   cease  to  meet  their
Specifications  as  a  result  of  any  acts  or  omissions  of  Resources,  its
Affiliates,  and their respective agents,  employees,  transporters or those for
whom Resources or its Affiliates are responsible.

7.5  Release of Product By  Resources:  Resources  shall  conduct or cause to be
conducted such quality control tests as it deems necessary or as are required by
law  (including  any  rules,  regulations  and  requirements  of the FDA and the
requirements of all other applicable  governmental or regulatory body, agency or
officials in the  Territory)  prior to sale or other release of a Product in the
Territory.

7.6 Credit  Risks:  Resources  shall assume sole  responsibility  for all credit
risks and  collections  of  receivables in respect of Products sold by it or its
Affiliates in the Territory and in respect of all dealings between  Resources or
its  Affiliates  and its  customers  and any third  parties from whom  Resources
and/or  its  Affiliates  sources  any  goods  and  services  required  by  it in
connection  with  repackaging,   labelling,  transporting,  storing,  promoting,
marketing, selling or delivering the Product.

7.7  Repackaging  and  Marketing  Expenses:  For  greater  certainty,  Resources
acknowledges  and agrees that it shall be solely  responsible  for all costs and
expenses  incurred  by it or its  Affiliates  in  connection  with  relabelling,
packaging,  promoting,  marketing  and selling the Products in the Territory (or
otherwise  performing its  obligations  hereunder)  without any right to recover
same directly or indirectly from Genpharm (save and except for partial  recovery
of permitted  listing fees and other similar payments  contemplated in Paragraph
(iv)  of the  definition  "Net  Sales"  and  Repackaging  Expenses  through  the
calculation and sharing of Gross Profits hereunder).


                                    ARTICLE 8
                         PRODUCT REJECTIONS AND RETURNS

8.1      Product Rejection:

(a)      Within 35 days from the date of  receipt  of each  delivery  of Product
         Resources  shall inspect the Product  (Resources  hereby  acknowledging

                                       19
<PAGE>

         that its failure to inspect  shall not release it from the  obligations
         it would  otherwise  have had it  conducted  an  inspection  as  herein
         contemplated,  or provide it with additional  rights).  Resources shall
         advise  Genpharm  in writing (a  "Rejection  Notice")  if a shipment of
         Product is not in conformity with Genpharm's  obligations  hereunder or
         is otherwise defective,  provided,  however, that Resources' failure to
         advise  Genpharm in a timely manner that a shipment of Product does not
         conform  shall not prejudice  Resources'  right to reject or return the
         Product if the defect or other non-conforming condition which justifies
         rejection  or  return  could  not  have  been  detected  by  Resources'
         inspection in accordance with cGMP standards.  If Resources  delivers a
         Rejection  Notice  in  respect  of all or any  part  of a  shipment  of
         Product,  then Genpharm and Resources  shall have 60 days from the date
         of Genpharm's  receipt of such notice to resolve any dispute  regarding
         whether all or any part of such  shipment  of Product  fails to conform
         with the Product  Specifications  or is otherwise  defective.  Disputes
         between  such  parties  as to  whether  all or any  part of a  shipment
         rejected by Resources conforms with Product Specifications not resolved
         in the 60 day  period  shall  be  resolved  by an  independent  testing
         laboratory or a consultant ( if not a laboratory  analysis issue),  the
         cost of  which  shall be paid by the  party  least  successful  in such
         dispute.

(b)      In the event any Product is appropriately  rejected by Resources (being
         Product  which does not satisfy the Product  warranty  contemplated  in
         Section  4.5 as a result of any act by or  omission  of Genpharm or the
         Manufacturer),  Genpharm  shall replace such  Products with  conforming
         goods within 16 weeks or, if requested by  Resources,  provide a credit
         to Resources  for the Transfer  Price  previously  paid by Resources to
         Genpharm  on  account  of  the  Product  in   question,   and  for  all
         transportation  and  insurance  costs,  duties,  taxes and fees paid or
         payable by Resources to import and deliver the Product in question from
         Genpharm's  or  the  Manufacturer's  Plant,  as the  case  may  be,  to
         Resources'  facility in Spring  Valley,  New York.  The credit shall be
         provided  immediately  following  the expiry of the period during which
         Genpharm may dispute a Rejection  Notice as  contemplated in Subsection
         (a) above  (unless the  Rejection  Notice is disputed by  Genpharm,  in
         which  event such  credit  shall only be given upon  resolution  of the
         dispute).  Replacement  Products  shall be delivered to Resources at no
         cost to  Resources  if  Resources  has  already  paid for the  rejected
         Products and not received a credit therefor, as aforesaid.

(c)      For  purposes  of Section  10.2  hereof,  once a Product is rejected by
         Resources,  Resources'  obligation  to pay for  such  Product  shall be
         suspended until such time as it is determined:

         (i)      by the independent laboratory or consultant that the Product
                  should not have been rejected by Resources; or

         (ii)     by the parties or by any arbitration conducted pursuant hereto
                  or by a final  order  of a  court  of  competent  jurisdiction
                  (which is not  subject  to further  appeal)  that no act by or
                  omission of Genpharm or the  Manufacturer was the cause of the
                  problem.

                                       20
<PAGE>

8.2      Products Returns:

(a)      Notwithstanding  the  provisions of Section 8.1 hereof,  Genpharm shall
         accept the return of any Product  which is returned to Resources by its
         customers because of defects  (including  failure to meet the Product's
         Specifications)  which are due to any act or omission of  Genpharm.  In
         the event of such an accepted  return,  Genpharm shall provide a credit
         to Resources  for the Transfer  Price paid by Resources to Genpharm for
         the returned  Product and all  transportation  and insurance  costs and
         custom duties,  taxes and fees paid by Resources  upon the  importation
         and  delivery of such  Product from  Genpharm's  or the  Manufacturer's
         Plant, as the case may be, to Resources' facility in Spring Valley, New
         York (or an allowance on account  thereof) or, at  Resources'  request,
         shall make available to Resources,  without charge, replacement Product
         within a period of 16 weeks. At Resources' option, and with the consent
         of Genpharm,  which shall not be unreasonably  withheld,  Resources may
         destroy any Product returned to it.

(b)      Any return of Product  accepted by Resources  from its customers in the
         ordinary  course of business,  including  without  limitation,  Product
         returned  as  defective  due  to  acts  or  omissions  attributable  to
         Resources,  its  Affiliates  or their  respective  agents or employees,
         shall be treated as returns for the purpose of calculating Net Sales so
         that when Resources next  calculates the share of Gross Profits payable
         to Genpharm in respect of the Product in question, it shall not include
         (if the sale of the returned  Product was not previously  included in a
         prior  reporting  period)  or  it  shall  deduct  from  Net  Sales  (if
         previously  included in respect of a prior  reporting  period),  as the
         case may be,  an  amount  equal to the  Gross  Profit  attributable  to
         returned Product, it being the intention of Genpharm and Resources that
         no share of  Gross  Profit  shall be paid or  payable  to  Genpharm  in
         respect of the sale of a returned Product.

(c)      In the event any  Product is  returned  to  Genpharm  by its  customers
         because the Product is alleged to be defective and  Resources  believes
         that  such  defect  is due to an act or  omission  of  Genpharm  or the
         Manufacturer,  Resources  shall  notify  Genpharm  within a  reasonable
         period  of any such  return  and shall  provide  or make  available  to
         Genpharm (or, at Genpharm's  direction,  the Manufacturer) such samples
         (if available) and other  information  concerning the returned  Product
         available  to Resources  or its  Affiliate so as to allow  Genpharm (or
         such  Manufacturer)  to  test  and  evaluate  the  allegedly  defective
         Product.  Resources shall retain a sufficient  number of samples of the
         allegedly defective Product so that additional samples are available at
         a later date should  additional  testing be required by an  independent
         testing  laboratory  or consultant as  contemplated  in Subsection  (d)
         below, or by Resources or by Genpharm (or such  Manufacturer) for their
         own  purposes.  If not  enough  samples  exist to be so  divided,  then
         Resources  and  Genpharm  shall  confer and reach  agreement  as to the
         handling of any available samples.

                                       21
<PAGE>

(d)      Genpharm  shall  complete  its review and  evaluation  of the  returned
         Products  (or  cause the  Manufacturer  to  complete  such  review  and
         evaluation)  within 20 business days of receiving the returned Products
         from  Resources or such longer  period of time as may be  reasonable in
         the circumstances to enable Genpharm (or such  Manufacturer) to conduct
         or cause to be conducted such tests,  studies or investigations (and to
         receive the results therefrom) as may be required to confirm or dispute
         the  existence  of the  problem  or to  identify  the  cause or  source
         thereof.  If Genpharm asserts that the returned  Product  satisfies the
         Product Manufacturing Requirements or that the defect is not due to any
         act or omission of Genpharm or the Manufacturer, representative samples
         of the Product shall be submitted to a mutually acceptable  independent
         testing  laboratory or consultant (if not a laboratory  analysis issue)
         for  analysis or review,  the costs of which shall be paid by the party
         against whom the  discrepancy  is resolved.  If it is determined by the
         independent laboratory or consultant that the returned Product does not
         satisfy the Product warranty  contemplated in Section 4.5 and that such
         failure  is  due  to  any  act  by  or  omission  of  Genpharm  or  the
         Manufacturer,  then the replacement  Product in respect of the returned
         Product shall be delivered to Resources  without  charge or appropriate
         credit  (or  allowance)  shall be given  therefor  as  contemplated  in
         Subsection 8.2(a) hereof.

8.3 Exclusive  Remedy:  Subject to Section 9.1 and 9.2 hereof and to its rights,
if any, to recover  expenses  associated  with a Recall as herein  contemplated,
Resources hereby  acknowledges and agrees (on its own behalf or on behalf of its
Affiliates)  that the sole remedy for  Genpharm's  failure to supply  Product in
accordance with the provisions of this agreement  (unless such failure is wilful
or due to gross negligence of Genpharm or the Manufacturer, if applicable) shall
be to require  Genpharm to replace the Product that does not meet such Product's
warranty  hereunder with conforming  goods within the time periods  hereinbefore
contemplated or to provide Resources with a credit in the amount contemplated in
this  Article  and that  Genpharm  (and its  Affiliates)  shall not be liable to
Resources for consequential or incidental damages including, without limitation,
loss of profits or prospective  profits of any kind (and that neither  Resources
nor any of its Affiliates shall have any rights or recourse  whatsoever  against
the Manufacturer,  all of which rights and recourses,  if any, are herein waived
and released);  provided that in the event that Genpharm fails to supply Product
(or  replacement  Product)  to  Resources  in  accordance  with its  obligations
hereunder  and,  as a result of such  failure,  a customer of  Resources  or its
Affiliate is entitled to cancel an order for such Product from  Resources or its
Affiliate  and to source a Competing  Product from an alternate  source (being a
Person other than Resources or any of its Affiliates)  and to require  Resources
or its Affiliate to pay to such  customer the  reasonable  excess  reprocurement
costs incurred by such customer, then Genpharm's responsibility shall be limited
to  reimbursing   Resources  for  the  Applicable   Percentage  of  such  excess
reprocurement  costs  actually paid or credited by Resources or its Affiliate to
its customer  (such costs being the  difference  between the landed cost to such
customer of such Competing  Product over and above the sale price of the Product
in question from Resources to such customer [the "Excess Reprocurement Costs"]).

                                       22
<PAGE>

8.4 Return Policy: Other than Product which have been appropriately  rejected by
Resources  pursuant to Section 8.1 above or returned  Product as contemplated in
Subsection 8.2(a) above Resources shall not have the right to return to Genpharm
any Product purchased by it without Genpharm's prior written consent.

8.5 Survival of  Provisions:  The provisions of this Article 8 shall survive the
termination or expiration of this agreement.

                                    ARTICLE 9
                     DAMAGES, INDEMNIFICATION AND INSURANCE


9.1 Limitation re Claims:  Subject to the  limitations set forth in this Section
9.1,  Resources and Genpharm covenant and agree to indemnify,  save harmless and
compensate  the other (and its  Affiliates,  for whose  benefit such other party
shall hold the benefit of this provision in trust) from,  against or for, as the
case may be, any and all  claims,  demands,  actions,  causes of action,  suits,
proceedings, judgements, damages, expenses (including reasonable attorney's fees
and expenses),  losses, fines,  penalties and other similar assessments,  as the
case may be, (the "Damages")  relating to or arising out of a breach by Genpharm
or  Resources,  as the case may be, of any of the  representations,  warranties,
covenants or agreements  herein;  provided that,  except where the breach arises
out of the representation or warranty being intentionally false or inaccurate or
constitutes a wilful  material  breach by Genpharm or Resources of its duties or
obligations hereunder or an act or omission  constituting gross negligence,  the
claim of the  aggrieved  party for Damages  arising  out of the breach  shall be
limited to claiming the amounts  owing or payable to it in  accordance  with the
provisions of this agreement and any out of pocket costs and expenses (including
amounts paid or payable by it to third parties,  other than Excess Reprocurement
Costs [except to the extent  contemplated  in Section 8.3 hereof])  which it has
incurred  and the  aggrieved  party shall not be  entitled  to recover  from the
defaulting  or  breaching  party any lost profits or  consequential  or punitive
damages, including loss or damage to its goodwill or reputation.

9.2 Third  Party  Claims:  In the event  that the sale or other  release  in the
Territory by Resources or its Affiliates of any Product supplied by or on behalf
of Genpharm to  Resources  pursuant to this  agreement  results in a third party
claim:

(a)      to the extent that the Damages  awarded or incurred  relate to or arise
         out  of the  manufacturing,  testing,  bulk  packaging,  labelling  (if
         applicable),  storage  or  handling  of  a  Product  by  Genpharm  or a
         Manufacturer   or  any  other  act  by  or  omission  of  Genpharm,   a
         Manufacturer  or any other Persons for whose acts or omissions they are
         responsible  at law Genpharm  shall be  responsible  therefor and shall
         defend,  indemnify and hold harmless  Resources and its Affiliate  from
         and against all such Damages; and

                                       23
<PAGE>

(b)      to the extent that the Damages  awarded or incurred  relate to or arise
         out  of  transporting,   receiving,   manufacturing   (if  applicable),
         repackaging,  labelling (if applicable),  testing,  storage,  handling,
         use,  marketing,  distribution,  sale  or  delivery  of  a  Product  by
         Resources  or  its  Affiliates  or any  other  act  by or  omission  of
         Resources,  any of its  Affiliate or any other Person for whose acts or
         omissions  they or any one or  more  of  them  is  responsible  at law,
         Resources shall be responsible therefor and shall defend, indemnify and
         hold  harmless  Genpharm and its  Affiliates  from and against all such
         Damages;

Upon the  assertion of any third party claim  against  Genpharm or Resources (or
their  respective  Affiliates)  that may give  rise to right of  indemnification
under this  agreement,  the  Person  claiming  a right to  indemnification  (the
"Indemnified  Party") shall give prompt notice to the Person alleged to have the
duty to  indemnify  (the  "Indemnifying  Party") of the  existence of such claim
(provided  that the  failure  to give such  notice in timely  fashion  shall not
release the Indemnifying Party of its obligations of  indemnification  hereunder
except to the extent that the  Indemnifying  Party has been prejudiced  thereby)
and shall give the Indemnifying Party reasonable opportunity to control,  defend
and/or  settle  such  claim  at its own  expense  and  with  counsel  of its own
selection;  provided,  however,  that the Indemnified Party shall, at all times,
have the right to fully  participate  in such  defense at its own  expense  with
separate counsel and, provided that both parties to the extent that they are not
contractually or legally excluded therefrom,  or otherwise prejudiced in a legal
position by so doing, shall co-operate with each other and with their respective
insurers in relation to the defense of such third party claim.  The Indemnifying
Party shall consult with the Indemnified Party with respect to settlement of any
claim. The  Indemnifying  Party shall have the right to settle any claim without
the consent of the Indemnified  Party,  provided that the  Indemnified  Party is
unconditionally  released from such claim and it is not otherwise  prejudiced by
the terms of settlement.  In the event the  Indemnifying  Party elects to defend
such claim,  the  Indemnified  Party may not settle such claim without the prior
written  consent of the  Indemnifying  Party. If the  Indemnifying  Party shall,
within a  reasonable  time after such  notice  has been  given,  fail to defend,
compromise or settle such claim, (or thereafter fails to diligently  defend such
claim) then the Indemnified Party shall have the right to defend,  compromise or
settle such claim without prejudice to its rights of indemnification  hereunder.
Notwithstanding  the  foregoing,  in the event of any  dispute  with  respect to
indemnity hereunder,  each party shall be entitled to participate in the defence
of such claim and to join and implead the other in any such action.

9.3  Insurance:  Each of  Resources  and  Genpharm  shall (and shall cause their
respective  Affiliates,  as required,  to) during the term of this agreement and
for a period  of not less  than 36  months  following  the  termination  of this
agreement,  carry or be subject to coverage under (as a named  insured)  product
liability insurance  (including blanket  contractual  liability) in an amount of
not less than $10 Million U.S.  combined  single limit,  which insurance will be
written  on an  occurrence  policy  form with an  insurance  carrier  reasonably
acceptable  to the other party.  Each of Genpharm and  Resources  shall,  at the
request of the other,  provide  evidence to such requesting  party of compliance
with its insurance  obligations  (and those of its Affiliate) under this Section
and evidence of renewals of any such policy, from time to time.


                                       24
<PAGE>


9.4   Survival:  The provisions of this Article 9 shall survive termination or 
expiration of this agreement.


                                   ARTICLE 10
                              TERM AND TERMINATION


10.1 Term:  The initial term of this  agreement  shall commence on the Effective
Date and, for each particular  Product,  shall terminate on the 10th anniversary
of the date upon which Genpharm or its Affiliate  receives the Product  Approval
for such Product, unless earlier terminated in accordance with the provisions of
this agreement.  Thereafter,  this agreement  shall, in respect of such Product,
automatically renew from year to year unless Resources or Genpharm gives written
notice of  termination to the other at least 180 days prior to the expiration of
the initial  term or any renewal  term,  as the case may be,  subject to earlier
termination as provided in this agreement.

10.2  Payment  and  Reporting  Defaults:  Genpharm  may, by notice in writing to
Resources,  terminate this agreement or, at its option, terminate this agreement
in respect of the  particular  Product or Products  to which the default  herein
contemplated  relates,  if Resources fails to pay to Genpharm any amount payable
by it to  Genpharm  hereunder  as and when the same  shall  have  become due and
payable or shall have failed to deliver (or caused to be delivered,  as the case
may be), in timely fashion, the reports or information  contemplated in Sections
6.4 or 6.5  hereof,  and in  either  case,  such  breach  shall  have  continued
unremedied  for a period of 15 business days after written notice of such breach
has been given by Genpharm to Resources;  provided that Resources shall not have
the right to such 15 business day grace period within which to cure such default
and Genpharm shall have the immediate  right to terminate the agreement for such
breach if Resources shall have previously breached Section 6.4 or 6.5, or failed
to  remit  any  sums of at  least  $100,000.00  to  Genpharm  when  due,  in the
aggregate,  three times in the 12 month period immediately preceding the default
in question In the event that  Resources has been given notice  pursuant to this
Section 10.2 and it disputes the alleged breach,  the dispute shall be submitted
to arbitration pursuant to Article 13 below and this agreement shall continue in
full force until such time as the arbitrator  renders his decision.  Termination
of this agreement  pursuant hereto shall be without prejudice to any other right
or remedy which Genpharm may have against Resources arising out of the breach in
question  including the right to obtain  compensation for its damages  (provided
that such right  shall be subject to the  limitations  set forth in Section  9.1
hereof).

10.3 Material Breach:  Subject to the provisions of Section 10.2 above, Genpharm
or Resources  may, by notice in writing to the other,  terminate  this agreement
or, at its option, terminate this agreement in respect only of those Products to
which the default in question  relates,  if such other party shall have breached
any of its material duties or obligations  under this agreement and such default
continues unremedied for a period of 60 days following receipt of notice of such
default (or, if such default is capable of being  remedied but is not reasonably
capable of being remedied within such 60 day period,  such longer period of time

                                       25
<PAGE>

as is reasonable in the  circumstances,  not exceeding 90 days in the aggregate,
provided that the defaulting party has, within such 60 day period, commenced and
thereafter  actively and diligently  pursues the remedying of such default).  In
the event that a party has been given  notice  pursuant to this Section 10.3 and
such party  disputes  the alleged  breach,  the dispute  shall be  submitted  to
arbitration  pursuant to Article 13 hereof and this agreement  shall continue in
full  force  until  such  time  as the  arbitrator  renders  his  decision.  The
arbitrator shall determine whether or not there has been a breach and/or whether
or not the same has been remedied  within the required cure period.  Termination
of this agreement  pursuant hereto shall be without prejudice to any other right
or remedy the party  terminating  this agreement may have against the defaulting
party  arising  out of the  breach  in  question  including  the right to obtain
compensation  for its damages  (provided that such right shall be subject to the
limitations set forth in Section 9.1 hereof).

10.4  Events  of  Default:  Genpharm  shall  have the  right to  terminate  this
agreement  upon written notice to Resources in the event that any one or more of
the  following  events  shall  become  applicable  to  Resources  or  any of its
Affiliates to whom any material duty or obligations  of Resources  hereunder has
been  delegated or assigned and Resources may  terminate  this  agreement in the
event that any one or more of the  following  events shall become  applicable to
Genpharm  or, at its option,  may  terminate  this  agreement in respect only to
those  Products  which are being  manufactured  by a  Manufacturer  (other  than
Genpharm)  if  any  of  the  following  events  shall  become  applicable  to  a
Manufacturer (Resources, its Affiliate, Genpharm or the Manufacturer affected by
such event being referred to as the "Party"):

         (i)      an order is made or a resolution or other action of such Party
                  is taken for the dissolution, liquidation, winding up or other
                  termination of its corporate existence;

         (ii)     the  Party  commits a  voluntary  act of  bankruptcy,  becomes
                  insolvent,   makes  an  assignment  for  the  benefit  of  its
                  creditors  or  proposes  to its  creditors  a  reorganization,
                  arrangement,  composition  or  readjustment  of its  debts  or
                  obligations  or  otherwise  proposes to take  advantage  of or
                  shelter  under any statute in force in the United States or in
                  the governing jurisdiction of such Party for the protection of
                  debtors;

         (iii)    if any proceeding is commenced with respect to a compromise or
                  arrangement,  or to have such Party  declared  bankrupt  or to
                  have a  receiver  appointed  in  respect  of such  Party  or a
                  substantial portion of its property and such proceeding is not
                  fully   stayed  or   dismissed   within  30  days  after  such
                  commencement;

         (iv)     a receiver  or a receiver  and manager of any of the assets of
                  such Party is  appointed  and such  receiver or  receiver  and
                  manager is not removed within 30 days of such appointment; or

                                       26
<PAGE>

         (v)      such Party ceases or takes steps to cease to carry on its 
                  business.

10.5  Ineligible  Person:  Genpharm or Resources may terminate this agreement in
respect of a Product  upon 30 days prior  written  notice to the other  party if
such party (otherwise than by reason of a breach of its obligations hereunder in
respect of such Product) is legally  prohibited  from performing its obligations
hereunder or becomes (or, in case of Resources, its Affiliates become and in the
case of  Genpharm,  a  Manufacturer  thereof  becomes) an  Ineligible  Person in
respect of such Product  (and,  where the party  purporting  to  terminate  this
agreement is also the party prohibited from performing or it or its Affiliate as
hereinbefore  contemplated is the Ineligible  Person, it [or such Affiliate,  as
the case may be], has made  diligent best efforts to remove the  prohibition  or
its  status  as an  Ineligible  Person)  and such  prohibition  or  status as an
Ineligible Person has continued uninterrupted for a period of 120 days.

10.6 Force Majeure:  Either party may terminate this agreement with respect to a
particular  Product  materially  affected  by  an  event  of  Force  Majeure  in
accordance  with the provisions of Section 14.2 hereof (but this agreement shall
continue in respect of the other Products which remain subject to this agreement
and which are not effected by such Force Majeure event).

10.7 Price Erosion: Either Genpharm or Resources may terminate this agreement in
respect of a  particular  Product  (the  "Specific  Product")  on 120 days prior
written  notice to the other party if, in any calendar  year,  the Gross Profits
derived  from Net Sale of such  Specific  Product  is less than 20% of the Gross
Sales of the Specific Product during such period.

10.8     Minimum Threshold Sales: If, with respect to a Product:

         (i)      in the  first  12  month  period  (such  period  being  herein
                  referred  to as the  "Period")  commencing  on the  date  (the
                  "Commencement   Date")   which  is  the  2nd   business   days
                  immediately   following   the  date   upon   which  the  first
                  Availability  Notice (as  contemplated  in  Subsection  5.3(a)
                  hereof)  is given to  Resources  hereunder  in respect of such
                  Product,  the  aggregate  Net Sales of such  Product  for such
                  Period is less than the Threshold Amount  applicable  thereto;
                  or

         (ii)     in any  subsequent  12 month  period (a  "Subsequent  Period")
                  commencing on the  anniversary  of the  Commencement  Date the
                  aggregate number of Units of such Product sold (excluding, for
                  greater certainty, free goods) by Resources and its Affiliates
                  in such  Subsequent  Period (and  included in the Net Sales of
                  such  Product  for  such   Subsequent   Period)  is,   without
                  reasonable justification (having regard to such factors as, by
                  way of illustration  only but without  limitation,  the Market
                  Factors [as defined below]) less than 70% of the Units of such
                  Product sold (excluding, for greater certainty, free goods) by
                  Resources and its Affiliates during the Period;

and the  shortfall  in sales  cannot be  attributable  primarily to the fault of
Genpharm,  then  Genpharm  shall have the right to terminate  this  agreement in

                                       27
<PAGE>

respect of such Product upon 90 days prior written notice to Resources.
For purposes of this Section, the term "Market Factor" means:

         (A)      the introduction  into the Territory of a Competing Product or
                  additional  Competing  Products  during  that  or a  preceding
                  Subsequent  Period which had a material  adverse effect on the
                  market  share of  Resources  and any other  manufacturers  and
                  distributors  who  were  at  the  time  of  such  introduction
                  marketing Competing Products in the Territory;

         (B)      a  significant  price  erosion  relating  to the  Product  and
                  Competing Products as a result of market forces resulting in a
                  decision  by  Resources,   acting  reasonably,   not  to  seek
                  additional and less profitable sales of such Product merely to
                  increase  Unit sales of such  Product at the  expense of Gross
                  Profit;

         (C)      the  introduction  into the Territory of new branded  products
                  which  materially  adversely  affected  the  market  for  such
                  Product  and  Competing  Products,  if any,  in the  Territory
                  during that or a preceding Subsequent Period;

         (D)      the introduction into the Territory of a product which has the
                  same active  ingredient and is for the same indication as such
                  Product  but  which is in a  different  dosage  form and which
                  materially  adversely affected the market for such Product and
                  Competing  Products,  if any,  in the  Territory  in that or a
                  preceding Subsequent Period;

         (E)      Force Majeure (as defined in Section 14.2 hereof).

10.9  Closing  Share  Purchase:  If the closing  pursuant to the Stock  Purchase
Agreement  has not occurred on or before July 15, 1998,  or if prior to July 15,
1998,  the  Stock  Purchase  Agreement  is  terminated  in  accordance  with the
provisions of Section 13.11 thereof, Genpharm may deliver a notice in writing to
Resources  on or  before  July  31,  1998 and  thereupon  this  agreement  shall
immediately  terminate in respect of those Products for which Product  Approvals
have not been  received by Genpharm or its  Affiliate on or before July 15, 1998
or the date upon which the Stock Purchase Agreement is terminated,  whichever is
earlier,  and shall  terminate  in  respect of all other  Products  on the first
anniversary of the Execution Date (without further notice or formality).

10.10 Non-Compete Obligation of Resources: If Genpharm terminates this agreement
(or  terminates  this  agreement in respect of a particular  Product or Products
only) pursuant to Section 10.2,  10.3 or 10.8 hereof or if Resources  terminates
this agreement  pursuant to Section 10.7 hereof,  Resources shall not (and shall
not  authorize,  cause,  permit or suffer any of its  Affiliates to) directly or
indirectly,  manufacture,  purchase,  sell or  distribute  in the  Territory any
Competing  Products to any  Product(s)  as to which this  agreement  has been so
terminated  for a period  of 24  months  following  the  effective  date of such
termination.

                                       28
<PAGE>

10.11 Non-Compete Obligation of Genpharm: If Resources terminates this agreement
(or  terminates  this  agreement in respect of a particular  Product or Products
only) pursuant to Section 10.3 hereof or if Genpharm  terminates  this agreement
pursuant to Section 10.7 hereof,  Genpharm  shall not (and shall not  authorize,
cause,  permit or suffer any of its Affiliates to) directly or indirectly,  sell
or  distribute  such  Product(s)  in the  Territory  for a period  of 24  months
following the effective date of such termination.

10.12  Purchase of Materials and Stock:  Upon  termination  of this agreement by
Resources (or  termination  of this agreement by Resources in respect of certain
Products  only)  pursuant to Sections 10.3 or 10.5 (as a result of Genpharm or a
Manufacturer  becoming an  Ineligible  Person or being legally  prohibited  from
performing  its  obligations  hereunder),  Genpharm  shall,  at the  request  of
Resources,  repurchase  all such Products in respect of which this agreement has
so  terminated  which were supplied by it or on its behalf and which are then in
the  possession,  custody or control of Resources  and  available  for sale (and
which  have not been  adulterated  or damaged  since they were  picked up by the
carrier at  Genpharm's or a  Manufacturer's  Plant for delivery to Resources and
which remain qualified for sale in the Territory) and all packaging  material in
the possession, custody or control of Resources which were specifically acquired
by Resources  for the Products in question and which cannot be used by Resources
or its Affiliates for any other products sold by any of them, at the landed cost
to Resources of such  Products and  materials  (determined  in  accordance  with
generally accepted  accounting  principles),  which purchase price shall be paid
within 30 days following delivery of such products and materials by Resources to
the carrier for delivery to Genpharm. Genpharm shall also pay all transportation
costs  associated  with  shipping or  transporting  the  repurchased  Product or
materials to Genpharm or to such other place as Genpharm may require.

10.13  Survival:  Any cause of action for breach of contract  shall  survive the
termination or expiration of this  agreement.  The  termination or expiration of
this agreement shall not affect any right or obligation of Genpharm or Resources
existing  prior to the effective  date of termination or expiration and which is
by expressed hereunder to survive termination. Termination or expiration of this
agreement  shall not affect any right,  duty or obligation  arising  pursuant to
Section 11.3,  11.4,  11.5, 11.6 or 11.7 hereof or Articles 6, 8, 9 or 12 hereof
(which shall survive termination).


                                   ARTICLE 11
                   REGULATORY MATTERS AND ACCESS TO FACILITIES


11.1 Access to Genpharm's and  Manufacturer's  Facilities:  Resources shall have
the right,  upon  reasonable  advance written notice to Genpharm to inspect each
Plant where a Product is being  manufactured or stored to monitor  compliance by
Genpharm and the Manufacturer with the Product Manufacturing Requirements and to
otherwise confirm that the Product is being  manufactured,  and that Genpharm is
operating,  in compliance  with the provisions of this agreement in all material

                                       29
<PAGE>

respects. Genpharm shall have the right to have its representatives and/or those
of its Affiliate present  throughout such inspections.  Resources shall promptly
notify  Genpharm  of any  non-compliance  at such  Plant  determined  through an
inspection herein contemplated and upon receipt of such notice,  Genpharm shall,
or shall cause the applicable  Manufacturer  to promptly and diligently  rectify
any non-compliance and implement appropriate  procedures with a view to avoiding
repetition  of  such  non-compliance   prior  to  commencing  or  continuing  to
manufacture  the  Product(s) in question.  Genpharm  shall,  or shall cause each
Manufacturer to, promptly notify  Resources,  in writing,  of any  circumstances
relating  to its  Plant  that  may  affect  the  quality  of the  Product  being
manufactured thereat.

11.2 Access to  Resources'  Storage  Facilities:  Genpharm  shall have the right
(through its own  representatives  and/or by representatives of a Manufacturer),
upon  reasonable  advance  notice to Resources,  to inspect  Resources'  and its
Affiliate's  manufacturing  and warehouse  facilities which are used to receive,
repackage,  label,  store or handle any  Product to ensure  compliance  with the
provisions of this agreement  including,  without limitation,  that the Products
are being received, repackaged,  labelled, stored and handled in accordance with
the  Specifications  for the Product  relating  thereto and applicable  laws and
regulations  (including FDA cGMP  guidelines)  and to otherwise  ensure that the
Products  do  not  become   adulterated   or  otherwise   cease  to  meet  their
Specifications  as a  result  of any  acts by or  omissions  of  Resources,  its
Affiliates and their respective agents,  employees or those for whom they are at
law responsible.  Resources shall have the right to have its  representatives or
those of its  Affiliate  present  throughout  such  inspection.  Genpharm  shall
promptly notify Resources of any non-compliance determined through an inspection
herein  contemplated and, upon receipt of such notice,  Resources shall promptly
and diligently  rectify or cause the  rectification  of any  non-compliance  and
implement or cause the  implementation of appropriate  procedures with a view to
avoiding  repetition of such  non-compliance.  Resources  shall promptly  notify
Genpharm,  in writing, of any circumstances  relating to its facilities or those
of its Affiliates where any of the Products are received, repackaged,  labelled,
stored or handled that may affect the quality of any Product.

11.3 Detention of Technical Records and Samples:  Each of Genpharm and Resources
shall keep, or cause its Affiliates to keep, as required,  such samples and such
records  (or copies  thereof)  in respect of the  Products  being  manufactured,
supplied  or  distributed  by it as  are  required  by  the  applicable  Product
Manufacturing  Requirements and/or applicable law for such period of time as may
be required thereunder. Resources shall permit and shall cause its Affiliates to
permit  Genpharm  and the  Manufacturers  to have  access  to such  samples  and
original records as are required to be maintained by Resources at all reasonable
times upon prior reasonable  notice and shall,  upon written  request,  promptly
provide Genpharm (or any  Manufacturer,  as directed by Genpharm) with a copy of
all such records.

11.4  Co-operation  re Product  Safety:  Genpharm and Resources  shall  promptly
advise  the other of any safety or  toxicity  problem of which such party or its

                                       30
<PAGE>

Affiliate  becomes  aware  regarding a Product being  manufactured,  supplied or
distributed by it,  intermediates or other  ingredients or processes used in the
manufacture such Product.

11.5 FDA  Correspondence:  Following receipt of a Product Approval for a Product
Genpharm and Resources  shall  provide the other (and Genpharm  shall cause each
Manufacturer to provide  Resources) with a copy of any correspondence or notices
received by such party from the FDA  relating to or  referring  to such  Product
within 10 days of receipt and a copy of any response to any such  correspondence
or notices with 10 days of making a response.

11.6     Customer Complaints:

(a)      Resources shall notify Genpharm and each Manufacturer, as applicable:

         (i)      of any customer complaints or alleged adverse drug experiences
                  ("ADE") relating to a Product promptly following their receipt
                  by Resources or any of its Affiliates (but in any event within
                  5 days of receipt thereof, except in the case of a Serious ADE
                  [as  defined  below] in which  event  Resources  shall  notify
                  Genpharm and the  Manufacturer of same within 24 hours,  which
                  latter  notification  shall be by  telephone  with a facsimile
                  confirmation immediately following; or

         (ii)     of any FDA complaints or complaints of any other  governmental
                  or regulatory body, agency or official in the Territory within
                  48 hours, except on weekends and holidays.

         For  purposes  of this  agreement  "Serious  ADE" shall mean an adverse
         event which gives rise to one or more of the following:  death,  threat
         to life,  new or  prolonged  in-patient  hospitalization,  permanent or
         significant   disability  or   incapacitation,   overdose,   cancer  or
         congenital  abnormality  or  serious  laboratory  abnormality  which is
         thought by the  reporting  physician to be serious or  associated  with
         relevant clinical signs or symptoms. Genpharm shall, or shall cause the
         applicable  Manufacturer  to, notify Resources in the manner and within
         the time periods hereinbefore  contemplated of any ADE or FDA complaint
         (or of the complaint of any  governmental  body,  agency or official in
         the  Territory)  relating to such  Product in respect of the  Territory
         following their receipt by Genpharm or such Manufacturer.

(b)      Genpharm shall be responsible for filing or causing the Manufacturer to
         file any necessary  complaint  report required by the FDA in accordance
         with applicable FDA regulations.

(c)      To enable Genpharm or the  Manufacturer to respond to any  requirements
         of the FDA in connection with a complaint or ADE,  Resources  agrees to
         investigate and respond in writing to any complaint or ADE forwarded to
         it by or a Manufacturer  promptly and, in no event,  later than 30 days
         after receipt of the ADE or complaint from Genpharm or a  Manufacturer.
         In  addition,  Resources  shall  provide  Genpharm  and the  applicable
         Manufacturer  with a copy  of any  correspondence,  reports,  or  other

                                       31
<PAGE>

         documents  relating to a complaint  or ADE received by Resources or its
         Affiliate  relating to the Product  promptly of the receipt thereof and
         shall  also  provide to  Genpharm  (and such  Manufacturer)  Resources'
         response  thereto within a reasonable  period  following  generation of
         such  document by  Resources.  Upon the request of Genpharm,  Resources
         shall use reasonable commercial efforts to retrieve and shall cause its
         Affiliates  to use  reasonable  commercial  efforts  to  retrieve  such
         samples of the Product  which are the object of a  complaint  or ADE to
         enable  Genpharm  and/or the  applicable  Manufacturer  to conduct such
         tests,  studies and  investigations as it determines to be necessary to
         respond  to such ADE or  complaint  or to take  appropriate  corrective
         action.

11.7     Recalls:

(a)      In the event that  Genpharm or a  Manufacturer  shall be  required  (or
         shall voluntarily  decide) to initiate a recall,  product withdrawal or
         field  correction  of any  Product  (a  "Recall"),  whether or not such
         Recall  has  been  requested  or  ordered  by the  FDA  (or  any  other
         governmental  body,  agency  or  official  having  jurisdiction  in the
         Territory) or by a court, Genpharm shall, or shall cause the applicable
         Manufacturer  to, notify Resources and Resources shall fully co-operate
         and shall cause its Affiliates to fully  co-operate  with Genpharm (and
         such  Manufacturer)  in  notifying  their  customers to return all such
         Product and shall  follow any other  instructions  provided by Genpharm
         (or such Manufacturer).

(b)      In the event that  Resources  believes  that a Recall may be  necessary
         and/or  appropriate,   prior  to  taking  any  action  Resources  shall
         immediately  notify  Genpharm  and  the  applicable   Manufacturer  and
         Genpharm and  Resources  shall  co-operate  and cause their  respective
         Affiliates to co-operate with each other (and the other's Affiliate) in
         determining the necessity and nature of the action to be taken.

(c)      With respect to any Recall, Genpharm or the Manufacturer shall make all
         contacts with the FDA and shall be responsible for co-ordinating all of
         the necessary  activities in connection  with such Recall and Resources
         (and its  Affiliates)  and  Genpharm  (and its  Affiliate)  shall  each
         co-operate with the other (and with the other's Affiliate) in recalling
         the affected Product.

(d)      In the event that it is  determined  by  agreement of the parties or by
         arbitration  as herein  contemplated  that a Recall results solely from
         any cause or event arising from the  manufacture,  labelling,  storage,
         handling,  or packaging of the Product by Genpharm or a Manufacturer or
         other  cause or  event  attributable  to  Genpharm  or a  Manufacturer,
         Genpharm shall be responsible  for all expenses of such Recall.  In the
         event  that  it  is  determined  by  agreement  of  the  parties  or by
         arbitration  as herein  contemplated  that a Recall results solely from
         any cause or event arising from the  transportation,  manufacturing (if
         applicable),  repackaging,  labelling,  storage, handling, marketing or
         distribution  of the Product by Resources or any of its  Affiliates  or
         other  cause  or  event   attributable  to  Resources  or  any  of  its
         Affiliates,  Resources  shall be  responsible  for all expenses of such
         Recall.  If: 

                                       32
<PAGE>

         (i)      within 60 days of the initiation of a Recall,  the parties are
                  unable to agree  that the cause of such  Recall was solely the
                  responsibility of Resources or its Affiliates or Genpharm or a
                  Manufacturer as hereinbefore contemplated; or

         (ii)     an arbitrator  pursuant to an arbitration  initiated by one of
                  the parties in respect of such Recall within the 60 day period
                  contemplated  in (i) above,  determines that the cause of such
                  Recall was not solely the  responsibility  of Resources or its
                  Affiliates or of Genpharm or a  Manufacturer  as  hereinbefore
                  contemplated;

         then  Resources  shall  initially  pay or  reimburse  Genpharm  and its
         Affiliates,  as the case may be,  for the  expenses  of the  Recall but
         shall be entitled to recover from Genpharm the Applicable Percentage of
         the  expenses so incurred  through  deductions  to and sharing of Gross
         Profits.

(e)      For purposes of this agreement,  Recall expenses shall include, but not
         be limited to, the expenses of  notification  and destruction or return
         of the recalled  Product,  as the case may be, and Resources'  (and its
         Affiliates')   and   Genpharm's   and   its   Affiliates'    reasonable
         out-of-pocket  costs in connection  with such Recall  including but not
         limited to  reasonable  attorney's  fees and  expenses  and credits and
         recall expenses claimed and paid to customers (the "Recall  Expenses").
         Each of the parties  shall use, and shall cause its  Affiliates to use,
         its  reasonable  best efforts to minimize the Recall  Expenses which it
         incurs  and  shall  provide  to the  other,  upon  request,  reasonable
         evidence of the out-of-pocket  expenses being claimed by it. The direct
         out-of-pocket costs and expenses of the Recall contemplated above shall
         not include the gross amount invoiced by Resources or its Affiliates to
         the customers on the sale of the Product  recalled,  which amount shall
         be dealt with in  accordance  with the  provisions  of Sections 8.2 and
         shall also not  include  any Excess  Reprocurement  Costs  (within  the
         meaning of Section 8.3 hereof),  which costs shall be paid by Resources
         (subject to its right to partially  recover same through deduction from
         Gross Profits).

(f)      All Product recalled  pursuant to this Section 11.7 shall be treated as
         Product  returned to Resources by its customers  and the  provisions of
         Section 8.2 shall apply thereto.

(g)      All communications relating to a Recall shall be held in confidence and
         shall be subject to the terms of Article 12 hereof.


                                   ARTICLE 12
                                 CONFIDENTIALITY


12.1 Confidential  Nature of Agreement:  Each of the parties hereto agrees that,
without the prior written  consent of the other, or except as may be required by

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<PAGE>

law or court  order,  the  existence  and terms of this  agreement  shall remain
confidential  and shall not be disclosed to any Person other than  employees and
professional  advisers of such party or its  Affiliate  who  reasonably  require
knowledge of the existence or terms of this  agreement and who are bound to such
party or its Affiliate by a like obligation of  confidentiality.  Such employees
and advisors will be advised of the nature and existence of the  confidentiality
undertakings of this agreement and of the  applicability of such undertakings to
them and will agree to be bound hereby.  

12.2 Duty of  Confidentiality:  Each of Genpharm and Resources agrees to hold in
trust  and  confidence  (and to  cause  its  Affiliates  to hold  in  trust  and
confidence)  for the  benefit  of the  other  party  (and  its  Affiliates)  all
Confidential Information of such other party and its Affiliates and each further
agree to safeguard,  and to cause its Affiliates to safeguard,  the Confidential
Information  of the other (or its  Affiliates)  to the same  extent that it does
with its own confidential  information and to limit and control copies, extracts
and  reproductions  made of such Confidential  Information.  Neither party will,
without the express  written consent of the other,  directly or indirectly,  use
(or authorize,  permit or suffer any of its Affiliates to use) any  Confidential
Information  of the other party or of its  Affiliates for any purpose other than
to implement the provisions of this agreement or in regulatory proceedings or in
litigation.  Neither party will disclose Confidential Information to any Person,
other than its employees or other representatives or those of its Affiliates who
have a need to know to  fulfill  the  provisions  and  intent of this  agreement
(where such  provisions  and intent  cannot  properly be fulfilled  without such
disclosure)  and who  have  been  informed  of the  confidential  nature  of the
information  and have agreed to be bound by the terms  hereof.  Each of Genpharm
and  Resources  shall  use its  best  efforts  to  prevent  unauthorized  use or
disclosure of the  Confidential  Information  of the other or its Affiliates and
shall use protective measures no less stringent than those used by it in its own
business to protect its own confidential information, including segregating such
information  at all  times  from the  confidential  material  of others so as to
prevent any commingling.

12.3 Compulsory Disclosures:  In the event that either Genpharm or Resources (or
any of their respective  Affiliates) shall be legally compelled or required by a
court of competent  jurisdiction to disclose all or any part of the Confidential
Information of the other (or its Affiliates),  it shall provide prompt notice to
the other so that such other party (or its Affiliates) may determine  whether or
not to seek a protective order or any other appropriate  remedy. If a protective
order or other  appropriate  remedy is not obtained  before such  disclosure  is
required,  the party  required  to make  disclosure  will  disclose  only  those
portions of the  Confidential  Information  in  question  which it is advised by
written  opinion of counsel  (which opinion shall be addressed to such party and
to the other  party),  it is legally  required to disclose and will exercise its
best efforts to obtain reliable  assurances that confidential  treatment will be
accorded such Confidential Information.

12.4 Return of Confidential Information: Upon termination of this agreement each
of Genpharm and  Resources  shall  immediately  return to the other all material
containing  or reflecting or referring to any  Confidential  Information  of the
other party or its Affiliates (including all notes, summaries, analysis or other
documents  prepared  or derived  therefrom)  and all copies  thereof in any form
whatsoever  under the power or control of such party or its  Affiliates,  except
that one copy may be retained for legal archival purposes,  and such party shall

                                       34
<PAGE>

delete such  Confidential  Information from all retrieval systems and data bases
or destroy  same as directed by the other party and furnish to the other  party,
if requested,  a certificate of a senior officer of such party  certifying  such
return,  deletion  and/or  destruction.  Where this  agreement is  terminated in
respect of a particular Product or Products only then the foregoing  obligations
shall thereupon apply to  Confirmation  Information  relating to such Product or
Products.

12.5 Survival: The obligations of confidentiality contained herein shall survive
the termination of this agreement.


                                   ARTICLE 13
                                   ARBITRATION


13.1 Arbitration:  Any controversy or claim arising out of, or relating to, this
agreement or the breach  thereof  shall be referred for decision  forthwith to a
senior  executive of each party not involved in the dispute.  If no agreement is
reached  within  30 days of the  request  by one party to the other to refer the
same to such senior  executive,  then such controversy or claim shall be settled
by  arbitration  in  accordance  with the  Commercial  Arbitration  Rules of the
American Arbitration  Association,  such arbitration to be held in New York, New
York  on  an  expedited  basis.   Judgement  upon  the  award  rendered  by  the
Arbitrator(s) may be entered in any court having jurisdiction thereof.


                                   ARTICLE 14
                      GENERAL CONTRACT TERMS AND CONDITIONS


14.1 Notice:  Subject to the express  provisions of this  agreement,  any notice
required or permitted  to be given under this  agreement  shall be  sufficiently
given  if  in  writing  and  delivered  by  facsimile   (with   confirmation  of
transmittal) or overnight courier (with confirmation of delivery), as well as by
prepaid  registered mail (with return receipt requested) or hand delivery to the
appropriate party at the address set forth below, or at such other address or to
the  attention  of such  other  individual  as such  party may from time to time
specify for that purpose in a notice similarly given:

         To Genpharm at:

         85 Advance Road,
         Etobicoke, Ontario,
         M8Z 2A6.

         Attention:  Chief Financial Officer
         Fax Number:  (416) 236-2940

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<PAGE>

         To Resources at:

         One Ram Ridge Road,
         Spring Valley, New York,
         U.S.A. 10977.

         Attention:  Chief Financial Officer
         Fax Number: (914) 425-7922

Any such notice shall be effective (i) if sent by mail, as aforesaid, 5 business
days after  mailing,  (ii) if sent by facsimile,  as aforesaid,  when sent (with
confirmation  of receipt),  and (iii) if sent by courier or hand  delivered,  as
aforesaid, when received,  provided that if any such notice shall have been sent
by mail and if on the date of mailing  thereof or during the period prior to the
expiry of the 5th business day  following  the date of mailing  there shall be a
general postal disruption (whether as a result of rotating strikes or otherwise)
in the  country or  territory  where the  sender or the  intended  recipient  is
situated then such notice shall not become  effective until the 5th business day
following the date of resumption of normal mail service.

Where  Resources is  authorized  or required to notify or otherwise  communicate
with a Manufacturer other than Genpharm it shall notify or otherwise communicate
with such  Manufacturer in the foregoing manner (and the provisions hereof shall
apply mutatis mutandis) at the address or facsimile number (and to the attention
of such  individual)  as Genpharm  shall notify  Resources  from time to time in
accordance  with the  foregoing  notice  provisions  or at such other address or
facsimile number or the attention of such other individual as such  Manufacturer
may  specify  in a notice  similarly  given,  provided  that a copy of each such
notice or other  communication shall be forwarded to Genpharm at its address for
notice hereunder.

14.2  Force  Majeure:  Neither  party  shall be  considered  to be in default in
respect of any obligation  hereunder if failure of  performance  shall be due to
Force Majeure (as hereinafter  defined).  If either party is affected by a Force
Majeure event such party shall, within 20 days of its occurrence, give notice to
the other party stating the nature of the event,  its  anticipated  duration and
any action  being  taken to avoid or  minimize  its effect.  The  suspension  of
performance shall be of no greater scope and no longer duration than is required
by such  Force  Majeure  and the  non-performing  party  shall use  commercially
reasonable  efforts to remedy its  inability to perform.  The  obligation to pay
money in a timely  manner is  absolute  and shall  not be  subject  to the Force
Majeure  provisions,  except to the extent payment is prohibited by governmental
rule or regulations  other than rules or  regulations  incident to bankruptcy or
insolvency  proceedings of a party. Force Majeure shall mean an unforeseeable or
unavoidable cause beyond the control and without the fault or negligence of a

                                       36
<PAGE>

party or its Affiliate  including,  but not limited to,  explosion,  flood,  war
(whether  declared  or  otherwise),  accident,  labour  strike  or other  labour
disturbance,  inability to obtain materials or services,  sabotage, acts of God,
newly enacted  legislation,  newly issued orders or decrees of any Court and any
binding act or order of any  governmental  agency.  Notwithstanding  anything in
this  Section,  the  party to whom  performance  is owned  but to whom it is not
rendered  because of an event of Force Majeure as  contemplated  in this Section
shall,  after  the  passage  of 120 days,  have the  option  to  terminate  this
agreement  in respect  of the  Product  affected  by such event on 30 days prior
written notice to the other party hereto. For greater  certainty,  Force Majeure
in relation to Genpharm's  obligation to supply  Product  hereunder to Resources
shall include the inability to obtain the required Product from the Manufacturer
thereof as a result of events or  circumstances  relating  to such  Manufacturer
which would  otherwise be an Event of Force  Majeure had it occurred in relation
to Genpharm.

14.3     Governing Law and Consent to Jurisdiction:

(a)      This  agreement  shall be deemed to have been made under,  and shall be
         governed by, the laws of the State of New York without giving effect to
         New York's choice of law provisions.

(b)      Subject  to  Article  13,  in  connection  with  any  action  commenced
         hereunder,  each of the undersigned consents to the jurisdiction of the
         state and  federal  courts  located in New York City.  Genpharm  hereby
         appoints Coudert Brothers,  1114 Avenue of the Americas,  New York, New
         York, 10036, (or any successor firm or to such other address as they or
         Genpharm  may  designate  in writing)  and  Resources  hereby  appoints
         Hertzog,  Calamari  & Gleason,  100 Park  Avenue,  New York,  New York,
         l0017,  (or any  successor  firm or to such  other  address  as they or
         Resources may designate in writing),  as their  respective  agents upon
         whom  service of process  may be made with the same force and effect as
         if service shall have been made personally upon them.

14.4  Entire  Agreement:  This  agreement  contains  the  entire  agreement  and
understanding  of the parties with respect to its subject  matter and supersedes
all negotiations, prior discussions and any agreements relating to the Products.
This  agreement  may not be amended or modified  except by a written  instrument
signed by the parties.

14.5 Waiver:  Any waiver of, or consent to depart from, the  requirements of any
provision  of this  agreement  shall be  effective  only if it is in writing and
signed by the party  giving it, and only in the  specific  instance  and for the
specific  purpose  for which it has been  given.  No  failure on the part of any
party to exercise,  and no delay in  exercising,  any right under this agreement
shall  operate as a waiver of such right.  No single or partial  exercise of any
such right  shall  preclude  any other or further  exercise of such right or the
exercise of any other right.



                                       37
<PAGE>


14.6 Counterparts:  This agreement may be executed in identical duplicate copies
exchanged by facsimile transmission.  The parties agree to execute two identical
original copies of the agreement after  exchanging  signed  facsimile  versions.
Each  identical  counterpart  shall  be  deemed  an  original,  but all of which
together shall constitute one and the same instrument.

14.7  Severability  of  Provisions:  If,  for any reason  whatsoever,  any term,
covenant or provision of this agreement or the application  thereof to any party
or  circumstance  or in any  jurisdiction  is to any  extent  held  or  rendered
invalid,  unenforceable or illegal, then such term, covenant or condition (a) is
deemed to be  independent of the remainder of this agreement and to be severable
and divisible  therefrom and its validity,  unenforceability or illegality shall
not affect,  impair or  invalidate  the  remaining  provisions  hereof;  and (b)
continue to be applicable and enforceable to the fullest extent permitted by law
in every other  jurisdiction and against any party and circumstances  other than
those  as to  which  or in  respect  of  which  it has  been  held  or  rendered
unenforceable or illegal.  To the extent  permitted by applicable law,  Genpharm
and  Resources  hereby waive any provision of law which renders any provision of
this agreement prohibited or unenforceable in any respect.  Should any provision
of this agreement be so held to be unenforceable,  such provision,  if permitted
by law, shall be considered to have been superseded by a legally permissible and
enforceable  clause which  corresponds most closely to the intent of the parties
as evidenced by the provision held to be unenforceable.

14.8  Assignment:  Neither this agreement nor rights of a party hereunder may be
assigned  nor may the  performance  of any  duties  hereunder  be  delegated  by
Resources or by Genpharm  without the prior written  consent of the other party.
Notwithstanding the foregoing,  Genpharm and Resources may delegate from time to
time  some of their  respective  duties  hereunder  to any of  their  respective
Affiliates  and, in addition,  Genpharm and/or its Affiliate may subcontract the
manufacturing of a Product, in whole or in part, to any other Person (whether or
not an Affiliate),  provided that (i) such  subcontracting is done in compliance
with all applicable requirements of the FDA); (ii) prior to any such delegation,
the  delegating  party gives  written  notice  thereof to the other party hereto
(indicating  the duties being so delegated and the duration of such  delegation)
and  (iii) no such  delegation  or  subcontracting  shall  relieve  Genpharm  or
Resources,  as the case may be, of any of its obligations hereunder.  Subject to
the foregoing this  agreement  shall be binding upon and enure to the benefit of
the parties and their respective successors and permitted assigns.

14.9 Non  Contravention:  Each party represents and warrants that the execution,
delivery and  performance  of this agreement by it will not contravene any other
contract or agreement to which it is a party or by which it is bound.


                                       38
<PAGE>

14.10  Compliance:  Where,  in accordance with the provisions of this agreement,
the  Affiliate  of a party  is  required  to do or omit to do or use  reasonable
commercial  (or other) efforts to do or refrain from doing any act or thing such
party shall use reasonable  best  commercial  efforts to cause its Affiliates to
comply.

         IN  WITNESS  WHEREOF,  each  of the  parties  hereto  has  caused  this
Agreement  to be  executed by its duly  authorized  officer as of the date first
above written.


GENPHARM INC.                             PHARMACEUTICAL RESOURCES, INC.


By:  /s/Ian Jacobson                      By: /s/Kenneth I. Sawyer
   -------------------------------           -----------------------------------
Name: Ian Jacobson                        Name: Kenneth I. Sawyer
Title:  Executive Vice President          Title: President


By:   /s/H. Koziarski
   -------------------------------
Name: H. Koziarski
Title:  Chief Financial Officer


                                       39

<PAGE>

           CONFIDENTIAL INFORMATION OMITTED AND FILED SEPARATELY WITH
                       SECURITIES AND EXCHANGE COMMISSION
                         ASTERISKS DENOTE SUCH OMISSION

                                  SCHEDULE "A"
                                   DEFINITIONS

"Affiliate"  means,  subject to the  limitations set forth in (A) and (B) below,
any Person which, directly or indirectly, controls, is controlled by or is under
common  control with such  Person.  For  purposes of this  definition,  the term
"control" (as used in the terms  "controls",  "controlled  by" and "under common
control") means either (i) holding 50% or more of the voting  securities of such
Person  or,  (ii)  in the  case  of a  Person  that  has no  outstanding  voting
securities,  having the right to 50% or more of the  profits  of such  Person or
having the right in the event of dissolution to 50% or more of the net assets of
such  Person  or,  (iii)  the power to  direct  or cause  the  direction  of the
management  and policies of such Person,  whether  pursuant to the  ownership of
voting securities, by contract or otherwise;  provided,  however, that (A) Merck
KGaA and its Affiliates  shall be deemed not to be Affiliates of Genpharm unless
such Person is Merck Generics Group B.V. or a subsidiary of Merck Generics Group
B.V. so that by way of illustration  only and without limiting the generality of
the foregoing,  Dey Laboratories,  Inc. will not be an Affiliate of Genpharm and
(B) any Person  who (but for the  exceptions  contemplated  herein in (A)) is an
Affiliate of Merck KGaA on the Effective Date or at any time thereafter and that
but for the  completion of the  transaction  contemplated  by the Stock Purchase
Agreement  or  the  exercise  of  any  rights  granted  pursuant  thereto  or in
connection with the completion of such transaction  would not be an Affiliate of
Resources,  such Person  shall be deemed not to be an  Affiliate of Resources so
that, for greater  certainty,  but without  limitation,  Genpharm and any of its
Affiliates shall not be Affiliates of Resources or any of Resources'  Affiliates
and vice versa;

"ANDA" means the abbreviated new drug application  heretofore or hereafter filed
by  Genpharm  or any of its  Affiliates  with  the  FDA for or in  respect  of a
Product;

"Applicable Percentage" means:

         (i)      subject  to (iii)  below,  in the case of a  Product  which is
                  developed and registered by Genpharm or its  Affiliates  based
                  on Product  Information  provided by a Third  Party  Licensor,
                  that  percentage  which will result in Genpharm  receiving the
                  aggregate of an amount equal to the Third Party  Royalty to be
                  paid to the Third Party  Licensor  (or as it has  directed) by
                  Genpharm  and/or its  Affiliates  in respect of such  Products
                  sold in the  Territory  and [****] of the balance of the Gross
                  Profits;

         (ii)     subject to (iii) below, in the case of any other Product, 
                  [****]; and

                                       40
<PAGE>

           CONFIDENTIAL INFORMATION OMITTED AND FILED SEPARATELY WITH
                       SECURITIES AND EXCHANGE COMMISSION
                         ASTERISKS DENOTE SUCH OMISSION

         (iii)    where  Resources has  exercised its right  pursuant to Section
                  3.9 hereto to  terminate  its  obligation  to fund any further
                  Patent  Defence  Expenses  (as  defined  in such  Section)  in
                  respect of a Product  (in this  definition  referred to as the
                  "Specific  Product")  such  percentage  which  will  result in
                  Genpharm receiving the aggregate of (A) an amount equal to the
                  Third Party Royalty to be paid to the Third Party Licensor (or
                  as it has  directed)  by  Genpharm  and/or its  Affiliates  in
                  respect of sales of the Specific  Product in the  Territory by
                  Resources and its  Affiliates  and (B) the same  proportion of
                  the balance of such Gross Profits (after  deducting from Gross
                  Profits the amount  contemplated in (A) above) that the Patent
                  Defense  Expenses  incurred by Genpharm and its  Affiliates in
                  respect of such  Specific  Product to the extent that the same
                  have not been recovered and are not recoverable from Resources
                  pursuant to Section 3.9 hereof is to the total Patent  Defense
                  Expenses incurred by Genpharm and its Affiliates in respect of
                  such Specific Product.

"Approved  Listing Fee" means,  in respect of a Product,  listing fees and other
similar  up-front  payments  paid by Resources  and its  Affiliates to unrelated
third party customers in  consideration  for such customers  agreeing to buy the
Product to the exclusion of other Competing  Products for a specified  period of
time, where:

         (i)      the agreement pursuant to which such payment is to be made has
                  been entered into in  compliance  with the policy  relating to
                  listing fees and other similar  up-front  payments  previously
                  approved  by  Genpharm,  or the  proposed  agreement  has been
                  approved in writing by Genpharm;

         (ii)     the agreement pursuant to which such payment is to be made has
                  been  entered  into  exclusively  to enhance  the sale of such
                  Product  and is not entered  into to  directly  or  indirectly
                  enhance the sale of Resources or any of its  Affiliates  Other
                  Products  (within  the meaning of Section 7.3 hereof) or as an
                  incentive for such customer to purchase any Other  Products of
                  Resources or its Affiliates;

         (iii)    the  amount  to be paid  pursuant  to such  agreement  to such
                  customer  plus the  amount  previously  paid to such  customer
                  and/or  Affiliates of such customer in respect of such Product
                  pursuant to any other  similar  agreement is less than the sum
                  of [****],  or such greater  amount as Genpharm may approve in
                  writing,  which approval shall not be unreasonably withheld or
                  unduly  delayed (and Genpharm shall be deemed to have approved
                  a request  for an  increased  amount to be paid to a  customer
                  unless Genpharm  notifies  Resources  within 12 business hours
                  (being hours between 9:00 a.m. and 5:00 p.m., Toronto time, on
                  a  business  day) of the  receipt  by  Genpharm  of a  written

                                       41
<PAGE>

                  request  for such  increased  fee or payment  that it does not
                  consent to such increased amount; and

         (iv)     not more than 2 unrelated  third party  customers of Resources
                  and its Affiliates  have already been paid (or are entitled to
                  receive  from  Resources or its  Affiliates)  a listing fee or
                  other similar upfront payment from Resources or its Affiliates
                  in  respect  of such  Product,  unless  Genpharm  consents  to
                  increase  the  number of  customers  to whom  listing  fees or
                  similar  upfront  payments may be made in accordance  with the
                  foregoing, which consent shall not be unreasonably withheld or
                  unduly  delayed [and Genpharm shall be deemed to have approved
                  a request  to the  payment of a listing  fee or other  similar
                  upfront  payment to a specified  customer  where such  payment
                  would  otherwise  be in breach of this  paragraph  (iv) unless
                  Genpharm  notifies  Resources  within 12 business hours (being
                  hours  between 9:00 a.m.  and 5:00 p.m.,  Toronto  time,  on a
                  business day) of the receipt by Genpharm of a written  request
                  for such a payment to such specified customer that it does not
                  so consent];

"business  day" means a day other than a Saturday,  a Sunday or a day which is a
statutory  holiday in the Province of Ontario,  Canada or the State of New York,
United States of America;

"cGMP" means the current Good Manufacturing Practices of the FDA (as in effect
from time to time);

"Competing  Product"  means,  with  respect to a particular  Product,  a generic
pharmaceutical  product  which is in the same dosage  form,  has the same active
ingredient, the same strength and is for the same indication as such Product but
which is  manufactured  and supplied by or purchased or acquired from any Person
other than Genpharm or its Affiliates;

"Confidential  Information"  shall mean information  disclosed to or obtained by
one party from another party (including  information  obtained by one party as a
result of access to the facilities of the other party) either prior to or during
the term of this agreement  which is non-public,  confidential or proprietary in
nature (including,  without limitation,  trade secrets,  financial data, product
information,  manufacturing  methods,  market  research data,  marketing  plans,
identity of customers,  or product information  [including the nature and source
of raw  materials,  product  formulation  and methods of producing,  testing and
packaging]) and which relates to the disclosing  party's past, present or future
research, development or business activities Confidential Information shall not,
however, include information that a party can demonstrate by written evidence:

         (i)      is in the public  domain  (provided  that  information  in the
                  public domain has not and does not come into the public domain
                  as a  result  of a  breach  by a party  hereto  (or any of its
                  Affiliates) of its  obligations of  confidentiality  contained
                  herein;

         (ii)     is known by the receiving party prior to disclosure by the 
                  other party; or

                                       42
<PAGE>

         (iii)    which has been developed by the receiving party independent of
                  any disclosure by the other party;

         (iv)     is  subsequently,  lawfully and in good faith  obtained by the
                  receiving party on a non-confidential basis from a third party
                  as shown by  documentation  sufficient  to establish the third
                  party as the  source of the  information,  provided  that such
                  third  party  was  not  under  an  obligation  to  treat  such
                  information in a confidential manner and had a lawful right to
                  make such disclosure;

"Deductible  Listing Fee" means, in relation to a Product in respect of a period
for  which Net  Sales is being  calculated  hereunder,  the  aggregate  of those
amounts,  each of  which  is the  portion  of an  Approved  Listing  Fee paid by
Resources or its Affiliates in such period or in any prior period amortized,  on
a  monthly  basis,  over the  period of the  agreement  pursuant  to which  such
Approved Listing Fee is paid, applicable to such period;

"Development Cost" means, in relation to a Product,  the out-of-pocket costs and
expenses  (excluding  overhead)  incurred in  connection  with the  research and
development  of  such  Product  for  the  Territory  (which  shall  include  the
formulation of such Product,  preliminary  batch work,  analytical  development,
stability testing and the validation  thereof,  all comparative work against the
branded   counterpart  of  such  Product  in  the  Territory  and  the  clinical
trials/bioavailability  studies)  and to  obtain  a  Product  Approval  for such
Product;

"FDA" shall mean the United  States Food and Drug  Administration  (or  whatever
such agency might be called from time to time),  or any successor  agency having
regulatory jurisdiction over the manufacture,  distribution and sale of drugs in
the United States.

"Gross  Profits" means,  for a Product in respect of any period,  Resources' Net
Sales of such Product in such period less the aggregate of the following:

(a)      the landed cost to  Resources  of such  Product  sold in such period by
         Resources  and/or its  Affiliate  to unrelated  third party  customers,
         determined in accordance with generally accepted accounting  principles
         consistently  applied, to include,  without  duplication,  the Transfer
         Price of such  Product to  Resources,  import  duties and taxes paid or
         payable by  Resources  in respect of  purchase or  importation  of such
         Product  and  delivery  charges  (including   insurance)   incurred  by
         Resources  for the delivery of the Product from the Plant to Resources'
         Spring Valley, New York, facility;

(b)      Recall Expenses  incurred in such period in respect of such Product;

(c)      Excess  Reprocurement  Costs  incurred  in such  period in  respect of 
         such Product; and

                                       43
<PAGE>

(d)      Repackaging  Expenses incurred by Resources  applicable to the quantity
         of Product sold in such period  determined in accordance with generally
         accepted accounting principles, consistently applied;

For greater  certainty,  where Product sold by Resources or its  Affiliates in a
period (the "Resale") had previously been sold by Resources or its Affiliates to
an  unrelated  third  party  customer  in that  period or any prior  period  and
returned to Resources  or its  Affiliates  by such  customer in such period or a
prior  period and an amount on account  of the  landed  cost of such  Product as
contemplated  in (a) above has been  deducted in  calculating  Gross  Profits in
respect of the prior sale for such  period or a prior  period then the amount to
be deducted  under  Paragraph (a) above in respect of the Resale shall be deemed
to be nil.

It is understood  and agreed that where Product  purchased by Resources has been
returned  to  Genpharm  or  otherwise  disposed  of (in a manner  approved of by
Genpharm) entitling Resources to claim a reduction,  refund,  remission or other
recovery of the import  duties or taxes paid or payable by  Resources in respect
of the purchase or  importation  of such Product then  Resources  shall promptly
claim such  reduction,  refund,  remission or other  recovery of such duties and
taxes (and shall  promptly  file and submit all  required  documentation  to the
applicable  fiscal  authority  therefore) and the Gross Profit for the period in
which the  reduction,  refund,  remission  or other  recovery of such duties and
taxes  is  recognized  by  Resources  (or its  Affiliates)  in  accordance  with
generally accepted accounting principles shall be increased by the amount of the
recognized  reduction,  refund,  remission or other  recovery of such duties and
taxes.

The  deduction  under  (b) and (c) are  limited  to  Recall  Expenses  or Excess
Reprocurement  Costs actually  incurred in such period and shall not include any
amount  accrued,  provided or reserved for  estimated  or potential  deductions.
Excess  Reprocurement  Costs and Recall  Expenses (to the extent they  represent
amounts  payable to unrelated third party  customers)  shall be considered to be
actually  incurred  only  when the  payment  is made or credit is issued to such
customer by Resources or its Affiliates.

"Gross Sales" means, in respect of sale of Units of the Product by Resources and
its  Affiliates in the  Territory,  the gross invoice price charged by Resources
and its Affiliates to unrelated third party customers less freight,  postage and
insurance  related to the delivery of the Product to such customer to the extent
that such  amount is  charged  to such  customer  and shown  separately  on such
invoice and has been  included in the gross  invoice  price and less sales taxes
and  other  governmental  charges  imposed  upon  the  sale of such  Product  by
Resources or its  Affiliates  to such  customer (to the extent that such amounts
have been included in gross invoice price);

"Manufacturer"  means,  in respect of a Product,  the Affiliate of Genpharm in
whose name the Product  Approval for such Product is registered;


                                       44

<PAGE>

"Manufacturing  Cost"  shall mean the cost to Genpharm  or the  Manufacturer  to
manufacture  (including  quality  control and  testing)  and package the Product
including,  without  limitation,  the landed cost of raw materials and packaging
materials,  component costs,  energy, labor (salary and benefits) and reasonable
overhead charges (not to exceed 20% of the  Manufacturing  Cost) relating to the
manufacture  of the Product,  and other direct and allocable  indirect  costs to
manufacture such Product, including but not limited to manufacturing charges for
material  adjustments,  for off grade or defective  material,  handling  losses,
physical adjustments,  salvage and depreciation but specifically excluding costs
incurred in research, development, design, marketing, promotion,  administration
or  obtaining  the Product  Approval,  determined  in  accordance  with  methods
currently  employed by Genpharm or such  Manufacturer  in the manufacture of all
products   produced  in  the  facility  or   facilities   in  which  Product  is
manufactured. If, in the sole discretion of Genpharm or the Manufacturer, all or
any portion of the manufacturing or packaging of the Product is subcontracted by
such  Manufacturer  to a third  party (or to any  Affiliate  of  Resources)  the
Manufacturing  Costs  shall  include  the amount  paid to such  third  party (or
Resources'   Affiliate).   The  Manufacturing  Cost  of  the  Product  shall  be
established  on the date that the Product  Approval for such Product is acquired
by Genpharm or the  Manufacturer  and on the first day of each calendar  quarter
thereafter,  which  amount  shall be used to  determine  the  Transfer  Price of
Product  manufactured by Genpharm or the  Manufacturer  for Resources during the
period until the next Manufacturing Cost determination date. The parties further
acknowledge  and agree that where,  during a period between  Manufacturing  Cost
determination dates, the variable costs incurred by Genpharm or the Manufacturer
to manufacture  the Product (and which are included in the  Manufacturing  Cost)
have,  in the  aggregate,  increased  or  decreased  by more than 5%, a pro rata
adjustment  will be  made to the  Manufacturing  Cost of  Products  manufactured
during  such  period  as agreed  upon by  Genpharm  and  Resources  or,  failing
agreement,  as  determined  by  arbitration  pursuant  to  Article  13  of  this
agreement.  In determining  changes in Manufacturing  Cost due to changes in the
variable  costs  incurred by  Genpharm or  Manufacturer  for raw  materials  and
components including active ingredient,  such materials shall be used and costed
on a first in, first out basis in accordance with generally accepted  accounting
principles,  consistently  applied.  Within 30 days of the  receipt of a Product
Approval  for  such  Product,  and  within  30 days of each  Manufacturing  Cost
determination date, Genpharm shall deliver or cause to be delivered to Resources
a statement showing the calculation of the Manufacturing Cost applicable to such
period,  which  statement  shall be accompanied  by a certificate  signed by the
Chief Financial Officer of Genpharm or, at Genpharm's  option,  the Manufacturer
of such Product  certifying that, to the best of his knowledge,  information and
belief,  after reasonable  investigation,  such statement is true and correct in
all material respects;

"Net  Sales"  means,  in respect  of a Product  for a period,  the gross  amount
invoiced by Resources and its Affiliates in such period to unrelated third party
customers on account of the sale of such Product (excluding amounts for freight,
postage,  insurance,  sales tax and other governmental charges imposed upon such
sale which are included in the gross amount  invoiced  and shown  separately  on
such invoice) plus any other form of revenue (other than interest  accruing from
or paid by such customers on account of outstanding overdue invoices) or expense
reimbursement  or recovery  recognized  by Resources or its  Affiliates  in such

                                       45
<PAGE>

period in accordance with generally accepted  accounting  principles as a result
of commercial arrangements relating to such Product less, without duplication:

         (i)      credits   issued  or  payments   made  by  Resources  and  its
                  Affiliates  to  unrelated  third  party  customers  for  or on
                  account of, without duplication, bona fide rebates granted and
                  customary   trade   discounts   (other  than  prompt   payment
                  discounts)  actually allowed by Resources or its Affiliates to
                  such  customers  in the  ordinary  course of business  (except
                  rebates  or   discounts   granted   wholly  or   partially  in
                  consideration  of such  customer's  agreement  to purchase any
                  service or any  product  other than the  Product  unless  such
                  rebates or discounts are across-the-board rebates or discounts
                  applied  uniformly  to  the  Product  and  other  products  or
                  services as part of an overall program of rebates or discounts
                  established  by Resources  covering  substantially  all of its
                  products),  shelf  stock  adjustments,  chargebacks,  returned
                  Product, rejection of damaged Product and billing and shipping
                  errors related to the Product;

         (ii)     out-of-pocket   costs  for  freight,   postage  and  insurance
                  incurred  by  Resources  or its  Affiliates  in the  period to
                  deliver the Product to unrelated  third party customers to the
                  extent that such amount is not charged to such customer;

         (iii)    payments   made   by   Resources   and  its   Affiliates   for
                  administrative fees,  reimbursements or similar payments to or
                  for  Medicaid  or any other  government  programs,  hospitals,
                  health maintenance organizations, insurance carriers, or other
                  similar arm's length entity or entities in connection with the
                  purchase or utilization of the Product;

         (iv)     Deductible  Listing Fees paid by  Resources or its  Affiliates
                  which are applicable to the period.

It is understood and agreed that:

(a)      deductions  under (i), (ii), (iii) and (iv) above from the gross amount
         invoiced  or other  revenue  recognized  shall not  include any amounts
         which  would  be  categorized  as  packaging,   relabelling,   selling,
         promotion,   marketing  or  general  or   administrative   expenses  in
         accordance with generally accepted accounting principles;

(b)      deductions  under  (i),  (iii) and (iv)  above  from the  gross  amount
         invoiced or other revenue  recognized  are for actual credits issued or
         payments  made by  Resources  and  its  Affiliates  and do not  include
         amounts  accrued,  provided  or reserved  for  estimated  or  potential
         deductions;

(c)      the deduction  under (i) above from the gross amount  invoiced or other
         revenue  recognized  shall not  include  any Recall  Expenses or Excess
         Reprocurement  Costs  credited  or paid to such  customer or any amount
         paid or credited to the customer on returned or rejected

                                       46
<PAGE>

         Product to the extent of the Transfer Price of the Product  returned or
         rejected  (which  amounts  shall be dealt with in  accordance  with the
         provisions  of Sections 8.2 or 8.3 hereof or the  definition  of "Gross
         Profit");

(d)      no amount  shall be  deducted  under (i),  (ii),  (iii),  (iv) above or
         otherwise from the gross amount invoiced or other revenue recognized on
         account of or as an  allowance  for a bad debt or  doubtful  account in
         relation to Product sold by Resources or its Affiliates;

(e)      no amount shall be deducted under (i), (ii),  (iii),  (iv) or otherwise
         from the  gross  amount  invoiced  or other  revenue  recognized  where
         Resources  has the right to recover  the amount  paid or  credited to a
         customer or other Person from Genpharm  pursuant to this agreement and,
         if any amount  previously  claimed as such deduction in calculating Net
         Sales in one period is  subsequently  recovered or becomes  recoverable
         from Genpharm in another period the amount so recovered  shall be added
         to the Net Sales in the  period  in which it is  recovered  or  becomes
         recoverable from Genpharm, it being the intention of the parties hereto
         that  Resources  shall not have the right to recover  the same  expense
         directly  from  Genpharm  and again  through the  calculation  of Gross
         Profits hereunder;

(f)      no credit or payment to an  unrelated  third  party  customer  shall be
         deducted  under (i) from the gross  amount  invoiced  or other  revenue
         recognized  where such  credit or payment is an attempt to  directly or
         indirectly  circumvent the restrictions or limitations contained herein
         as to  the  nature  or  quantum  of the  items  which  may be  deducted
         hereunder  in  calculating   Net  Sales  nor  shall  Resources  or  its
         Affiliates  reduce the selling price at which the Product is sold to an
         unrelated  third  party  customer  with a view  to  circumventing  such
         restrictions or limitations; and

(g)      in respect of transfers of Product by Resources to its  Affiliates  (or
         between  Affiliates)  for resale,  the price at which such products are
         resold by such Affiliate to third parties (other than other Affiliates)
         shall be  included  in Gross  Profits and the  transfer  price  between
         Resources  and  its  Affiliates  or  between  such  Affiliates  will be
         disregarded.

"Person"  shall  be  broadly   interpreted  and  shall  include  an  individual,
partnership, joint venture, association, corporation, company and any other form
of  business  organization,   government,  regulatory  or  governmental  agency,
commission, department and instrumentality;

"Plant" means the  manufacturing  facility and/or  warehouse used by Genpharm or
any other Manufacturer to manufacture or store a Product which is to be supplied
to Resources pursuant hereto;

"Product" means the generic pharmaceutical products contemplated in Schedule "B"
annexed  hereto which are to be developed  and  manufactured  by or on behalf of
Genpharm or a Manufacturer and supplied by or on behalf of Genpharm to Resources
pursuant hereto;

                                       47
<PAGE>

"Product Approval" means, with respect to a Product, the final and unconditional
approval of an ANDA by the FDA  enabling  Genpharm or the  Manufacturer  to sell
such Product in the Territory;

"Product   Information"  means,  in  respect  of  any  Product,   all  technical
information  and  data  relating  to  such  Product,  including  the  chemistry,
manufacture,  use,  formulation and regulatory  approval thereof,  heretofore or
hereafter during the term of this agreement produced or received by, or known to
Genpharm or its applicable Affiliate including,  without limiting the generality
of the foregoing:

(a)      where an ANDA  approval  letter has been issued,  a copy of the ANDA as
         approved and all communication,  documents and information  relevant to
         the ANDA submission received from or forwarded to the FDA in connection
         therewith,  including without  limitation,  any responses to deficiency
         letters issued by the FDA;

(b)      if an ANDA  submission  has been made but no  approval  letter has been
         received,   the   submission   to  the  FDA   and  all   communication,
         documentation and information  received from or forwarded to the FDA in
         connection  therewith  including any  responses to  deficiency  letters
         issued by the FDA; and

(c)      if no ANDA  submission has been made,  all data compiled  heretofore or
         hereafter  compiled  for  submission  including,  all  studies  and all
         communications, documents and information received from or forwarded to
         the FDA.

Any reference  herein to Product  Information of a Third Party Licensor or other
Person shall have a corresponding meaning, as applicable.

"Product Manufacturing Requirements" shall have the meaning attributed thereto
in Section 4.2 hereof;

"Recall" shall have the meaning attributable thereto in Section 11.7 hereof;

"Recall Expenses" shall have the meaning attributable thereto in Section 11.7 
hereof;

"Repackaging  Expenses" means the cost to Resources or its Affiliates to package
the  Product  including,  without  limitation,  the  landed  cost  of  packaging
materials and labour  (salaries and benefits) and  reasonable  overhead  charges
(not to exceed 20% of the  Repackaging  Expenses)  relating to  repackaging  and
labelling of the Product into finished labelled Units,  determined in accordance
with  generally  accepted  accounting  principles,   consistently  applied.  The
Repackaging  Expenses  of a  Product  shall be  determined  on the date that the
Product  Approval for such  Product is acquired by Genpharm or the  Manufacturer
and on the first day of each calendar quarter thereafter,  which amount shall be
used to  determine  the  Repackaging  Expenses of Products  packaged  into final
labelled Units by Resources or its  Affiliates  during the period until the next
Repackaging  Expense  determination  date. The parties  further  acknowledge and
agree that where,  during a period  between  Repackaging  Expense  determination

                                       48
<PAGE>

dates, the variable costs incurred by Resources or an Affiliate to repackage and
label a Product (and which are included in the  Repackaging  Expenses)  have, in
the  aggregate,  increased or  decreased by more than 5%, a pro rata  adjustment
will be  made to the  Repackaging  Expenses  of  Products  packaged  into  final
labelled  Units  during such period as agreed to by Genpharm and  Resources  or,
failing agreement,  as determined by arbitration  pursuant to Article 13 of this
agreement.  In determining changes in Repackaging Expenses due to changes in the
variable costs incurred by Resources or its Affiliates for packaging material or
other supplies,  such materials and supplies shall be used and costed on a first
in, first out basis in accordance with generally accepted accounting principles,
consistently applied;

"Specifications"  means the  terms and  conditions  applicable  to a Product  as
described in the Product  Approval  covering  such  Product,  as the same may be
supplemented from time to time;

"Stock  Purchase   Agreement"  means  the  Stock  Purchase   Agreement   between
Pharmaceutical Resources, Inc. and Lipha Americas, Inc. dated as of the 25th day
of March, 1998 relating to the purchase by Lipha Americas, Inc., an Affiliate of
Merck KGaA, of certain shares of the common stock of  Pharmaceutical  Resources,
Inc.;

"Territory"  means the 50  states of the  United  States  of  America,  plus the
District of Columbia,  the Commonwealth of Puerto Rico, the U.S. Virgin Islands,
Guam,  Samoa and any other  territory  which,  on the Effective Date is a United
States government  protectorate  wherein an ANDA approved by the FDA is required
to sell the Product in such territory.

"Third Party Licensor" shall have the meaning  attributed thereto in Section 3.1
hereof;

"Third Party Royalty" shall have the meaning  attributed  thereto in Section 3.1
hereof;

"Transfer Price" means the  Manufacturing  Cost of the Product supplied by or on
behalf of Genpharm to Resources pursuant hereto;

"Threshold Amount" means in respect of the Period,  the following  percentage of
the generic  market for the Product  (measured in dollars) based upon unit sales
as determined through IMS reported sales for such Period:


                                       49
<PAGE>


           CONFIDENTIAL INFORMATION OMITTED AND FILED SEPARATELY WITH
                       SECURITIES AND EXCHANGE COMMISSION
                         ASTERISKS DENOTE SUCH OMISSION

         (i)      if, on the date the Period (as that term is defined in Section
                  10.8 hereof)  commences,  there are not more than [****] other
                  Competing Products being distributed in the Territory, [****];
                  or

         (ii)     if,  on the date the  Period  commences,  there  are more than
                  [****]  but  less  than  [****]   Competing   Products   being
                  distributed in the Territory, [****]; or

         (iii)    on the date the Period  commences,  there are more than [****]
                  Competing Products being distributed in the Territory, [****];

"Unit" means an individual packaged finished Product;


                                       50
<PAGE>




                                  SCHEDULE "B"
                                    PRODUCTS


40 generic pharmaceutical products in solid dosage form (capsules and tablets of
the same molecule to be treated as different  products but varying  strengths of
the same  molecule to be treated as one  product)  which are,  on the  Effective
Date,  under  development  for the  Territory  for or on behalf of  Genpharm  as
separately agreed to by Genpharm and Resources


                                       51
<PAGE>



                                  SCHEDULE "C"
                           RESOURCES' CURRENT PRODUCTS




ALLOPURINOL 100 MGedact.wpd          HALOPERIDOL 0.5 MG
ALLOPURINOL 300 MG                   HALOPERIDOL 1.0 MG
                                     HALOPERIDOL 2.0 MG
ALPRAZOLAM 0.25 MG                   HALOPERIDOL 5.0 MG
ALPRAZOLAM 0.5 MG                    HALOPERIDOL 10.0 MG
ALPRAZOLAM 1.0 MG
                                     HYDRALAZINE/HCTZ 25MG/25MG (HYDRA-ZIDE)
ANILORIDE 5MG                        HYDRALAZINE/HCTZ 50MG/50MG (HYDRA-ZIDE)
                                     HYDRALAZINE/HCTZ 100MG/50MG (HYDRA-ZIDE)
ATENOLOL 50MG
ATENOLOL 100MG                       IBUPROPEN 200MG
                                     IBUPROPEN 400MG
BENZTROPINE MESYLATE 0.5MG           IBUPROPEN 600MG
BENZTROPINE MESYLATE 1MG             IBUPROPEN 800MG
BENZTROPINE MESYLATE 2MG
                                     IMIPRAMINE HCI 10MG
CAPTOPRIL 12.5MG                     IMIPRAMINE HCI 25MG
CAPTOPRIL 25.5MG                     IMIPRAMINE HCI50MG
CAPTOPRIL 50.5MG
CAPTOPRIL 100MG                      ISOSORBIDE DINITR. 5MG ORAL
                                     ISOSORBIDE DINITR. 10MG ORAL
CARISOPRODOL & ASPRIN 200/325MG      ISOSORBIDE DINITR. 20MG ORAL
                                     ISOSORBIDE DINITR. 30MG ORAL
DEXAMETHASONE 0.25MG
DEXAMETHASONE 0.50MG                 MECLIZINE 12.5MG

                                       52
<PAGE>

DEXAMETHASONE 0.75MG                 MECLIZINE 25.0MG
DEXAMETHASONE 1.50MG
DEXAMETHASONE 4.0MG                  MEGESTROL ACETATE 20MG
DEXAMETHASONE 6.0MG                  MEGESTROL ACETATE 40MG

DOXEPIN 10MG                         METHOCARBAMOL & ASPIRIN 400/325MG
DOXEPIN 25MG
DOXEPIN 50MG                         METOPROLOL TARTRATE 50MG
DOXEPIN 75MG                         METOPROLOL TARTRATE 100MG
DOXEPIN 100MG
DOXEPIN 150MG                        MINOXIDIL 2.5MG
                                     MINOXIDIL 10.0MG
FLUPHENAZINE HCI 1.0MG
FLUPHENAZINE HCI 2.5MG               NICOTINE PATCH 7MG
FLUPHENAZINE HCI 5.0MG               NICOTINE PATCH 14MG
FLUPHENAZINE HCI 10.0MG              NICOTINE PATCH 21MG

FLURAZEPAM 15MG                      NYSTATIN ORAL TABS 500,000 UNITS
FLURAZEPAM 30MG
                                     PINDOLOL 5MG
GLIPIZIDE 5MG                        PINDOLOL 10MG
GLIPIZIDE 10MG
                                     PIROXICAM 10MG

                                     PIROXICAM 20MG


                                       53
<PAGE>


SILVER SULFADIAZINE 1% 25GM TUBE
SILVER SULFADIAZINE 1% 50GM JAR
SILVER SULFADIAZINE 1% 50GM TUBE
SILVER SULFADIAZINE 1% 85GM TUBE
SILVER SULFADIAZINE 1% 300GM JAR
SILVER SULFADIAZINE 1% 1000GM JAR
SILVER SULFADIAZINE AF 1% 50GM JAR
SILVER SULFADIAZINE AF 1% 400GM JAR
SILVER SULFADIAZINE AF 1% 1000GM JAR

TEMAZEPAM 15MG
TEMAZEPAM 30MG

TRIAZOLAM 0.125MG
TRIAZOLAM 0.25MG

ZORPRIN (ASPIRIN) 800MG (BRAND)

                                       54


                                                                    Exhibit 10.3


                            MERCK SERVICES AGREEMENT



         THIS SERVICES AGREEMENT (the "Agreement") is dated as of June 30, 1998,
between  Pharmaceutical  Resources,  Inc.,  a  New  Jersey  corporation,   whose
principal  offices are located at One Ram Ridge Road,  Spring  Valley,  New York
10977  (the  "Company"),  and Merck  KGaA,  a  Kommanditgesellschaft  auf Aktien
organized  under the laws of  Germany,  whose  principal  offices are located at
Frankfurter Strasse 250, 64271 Darmstadt, Germany (the "Service Provider"), each
of which may be referred to  individually  as a "Party" or  collectively  as the
"Parties."  This Agreement and the Annex  contemplated  hereby are  collectively
referred to as the "Agreement" unless indicated otherwise.

         WHEREAS,  the Service Provider possesses,  inter alia,  substantial and
long  acquired  technical  expertise  and  know-how  in  the  areas  of  product
development, clinical studies and trials, marketing, distribution, financial and
administrative  support,  and other areas related to the  development of ethical
and generic drugs; and

         WHEREAS,  the Company wishes to engage certain  services of the Service
Provider,  and the Service  Provider is willing to perform the Services  defined
herein,  on the terms and conditions set forth herein,  in  consideration of the
issuance  by the Company to the  Service  Provider of a stock  option to acquire
820,000 shares of common stock of the Company (the "Option Shares"), in the form
of the Annex hereto (the "Option").

         NOW, THEREFORE, in consideration of the mutual obligations and benefits
set forth in this  Agreement,  the receipt and  sufficiency  of which are hereby
acknowledged,  the Company and the Service Provider agree to the following terms
and conditions:

1.       Services
         --------

1.1      At the request of the Company  and  subject to the  provisions  of this
         Agreement,  the  Service  Provider  will  perform  some  or  all of the
         following services (the "Services") with respect to certain products as
         agreed to between the parties from time to time (the "Products"):

a.       providing  assistance  to conduct,  monitor  and  analyze  preclinical
         investigations.

b.       rendering advice to the Company's  research and development  department
         on the design and development of protocols.

                                      -1-
<PAGE>

c.       providing   assistance  and  advice  to  develop  and  prepare  Product
         formulations  and dosage  forms for  preclinical,  clinical  trials and
         commercial  purposes  and  develop  methods  for  establishing  Product
         stability (including expiration dating).

d.       providing   assistance   to  develop   and   transfer  to  the  Company
         manufacturing  methods and procedures  for the synthesis,  scale-up and
         process  validation  for the  manufacture  of Products and their active
         ingredients for clinical and commercial purposes.

e.       assisting  in  developing  methods  and  procedures  for  the  testing,
         analysis and quality  control of finished  dosage forms of Products and
         their ingredients.

f.       assisting the Company in the preparation of ANDAs.

g.       providing periodic status reports on the Services being performed.

h.       providing assistance,  if required, to prepare and file Federal,  State
         and local tax returns.

i.       advising on the investment of funds and rendering assistance and advice
         with respect to real property owned or leased by the Company.

j.       providing  various legal  support  services  when  required,  including
         advice  with  respect to product  liability  claims and  actions  filed
         against the Company.

k.       providing  technical support and/or consulting services for the Company
         to optimize the Company's  production  capacity.  To effectuate such an
         optimization,  the  Service  Provider  may from time to time,  transfer
         industry demand,  capacity utilization data to the Company to assist in
         the production planning process.

l.       providing   assistance   in  financial   planning,   budgeting,   sales
         forecasting  for  the  Products,  subject  to  the  Service  Provider's
         internal operational constraints.

m.       providing  additional  administrative  and  technical  support  for new
         product launches.

n.       providing computer and/or management information system support for the
         Company.

o.       providing  quality control and quality assurance  services,  as needed,
         including Product testing.

p.       advising in business planning and analysis.

q.       providing assistance in certain data processing functions in support of
         other management services provided pursuant hereto.
   
                                   -2-
<PAGE>

1.2      The Service Provider shall use its reasonable efforts to ensure that
         the Services  provided  hereunder are consistent with accepted industry
         standards and in a professionally competent manner.

1.3      The  Service  Provider  shall use its  reasonable  efforts to render
         Services in material compliance with all applicable legal requirements.

1.4      In order for the Service Provider to provide the Services hereunder,
         the Company shall disclose to the Service Provider such information and
         data which is reasonably requested by the Service Provider. The Service
         Provider  shall  use  such  information  and  data  exclusively  in the
         performance of its obligations hereunder,  and such disclosure shall be
         subject  to the  terms  and  conditions  of this  Agreement,  including
         Section 7, if such disclosure is of Confidential Information as defined
         herein.

2.       Payment Terms
         -------------

         In consideration of the Services to be rendered by the Service Provider
hereunder and of its undertaking to perform such Services for the benefit of the
Company during the term of this  Agreement,  the Company shall make full payment
of its  obligations  hereunder  in the form of the  Option.  Such  Option  shall
entitle the Service  Provider  to  acquire,  beginning  three years and ten days
after the date  hereof,  820,000  shares of the  Company's  common  stock at the
Exercise  Price (as  specified  in the Option) for the Services  provided.  Such
Option  shall  expire at 5:00 P.M.,  New York City time,  on June 30, 2003 if it
shall not have been  fully  exercised.  The  Company  shall also  reimburse  the
Service  Provider for all  reasonable  out-of-pocket  costs and expenses  (which
shall not include any direct or indirect  labor  costs)  incurred in  connection
with the performance of such Services,  including,  without  limitation,  travel
expenses,  meals and lodging,  cost for supplies  directly consumed in rendering
such Services,  storage and warehousing  costs,  printing and duplicating costs,
and transport and similar costs;  provided,  any such reimbursement in excess of
$10,000 in any calendar  quarter,  shall  require the  Company's  prior  written
approval.  The Company shall be under no  obligation to make any other  payments
for the Services contemplated herein pursuant to this Agreement.

3.       Schedule of Performance
         -----------------------

         During the term of this Agreement,  the Service  Provider shall perform
the Services  from time to time,  as  reasonably  required by the Company and as
agreed upon  between the Company and the Service  Provider,  upon the  Company's
advance written notice which shall be received by the Service  Provider not less
than ten business days before the proposed  service  date.  Upon receipt of such
notice,  the Service  Provider  shall have five  business  days to accept or, in
consultation  with the Company,  reschedule the service date. The Company hereby
acknowledges  that the Service  Provider  must take into  consideration  its own
labor constraints and existing  commitments of its own business to other parties
in  determining  the service date of such Services.  In any event,  the Services
requested  by the  Company  shall  not be more than a total of 200 man hours per
calendar quarter unless the Service Provider expressly agrees otherwise. 

                                      -3-
<PAGE>

4.       Term
         ----

         This  Agreement  shall be effective  from the date of execution of this
Agreement and shall remain in effect for thirty-six (36) months.

5.       Representations and Warranties
         ------------------------------

5.1      Each  Party  hereby  represents  and  warrants  to the  other  Party as
         follows:

         (a)  It is a corporation  duly organized,  validly existing and in good
              standing under the laws of its jurisdiction of incorporation;

         (b)  It has the corporate power and authority to own its assets,  carry
              on its  business  and execute and deliver  this  Agreement  and to
              perform its obligations hereunder;

         (c)  It has taken all appropriate and necessary action to authorize the
              execution, delivery and performance of this Agreement;

         (d)  All consents,  approvals,  licenses and authorizations of, and all
              filings  and  registrations   with,  any  governmental   authority
              necessary  for  the  due  execution,   delivery,  performance  and
              enforceability  of this  Agreement,  have been obtained and are in
              full force and effect; and

         (e)  This Agreement  constitutes a legal, valid and binding obligation,
              enforceable in accordance with its terms. The execution,  delivery
              and  performance  of this Agreement will not violate any provision
              of any applicable laws or regulations.

6.       Independent Contractor
         ----------------------

         This  Agreement  does not  constitute or create (and the Parties do not
         intend  to  create  hereby)  a  joint  venture,   pooling  arrangement,
         partnership,  or formal  business  organization of any kind between and
         among any of the Parties, and the rights and obligations of the Parties
         shall be only those  expressly set forth herein.  The Service  Provider
         will perform the Services as an independent contractor and shall not be
         considered,  for any  purpose,  to be an  agent of the  Company  or its
         affiliated companies. Each Party shall be responsible for providing its
         own personnel and workers'  compensation,  medical  coverage or similar
         benefits,  any life,  disability or other  insurance  protection.  Each
         Party shall be solely  responsible  for the payment of social  security
         benefits,  unemployment  insurance,  pension benefits,  withholding any
         required  amounts  for  income and other  employment-related  taxes and
         benefits of its own employees,  and shall make its own arrangements for
         injury,  illness or other  insurance  coverage to protect  itself,  its
         affiliated companies,  its subcontractors and personnel from any costs,
                                      -4-
<PAGE>

         expenses,  damages, loss and/or liability arising out of performance of
         the Services, or any transportation  associated therewith.  The Service
         Provider has no power or authority to act for,  represent,  or bind the
         Company or its affiliated companies in any manner.

7.       Confidentiality

7.1      (a)  The Parties  recognize  that in the course of  performance  of the
              Agreement,  either of them may  disclose to the other  information
              about the  disclosing  Party's  business or activities  which such
              Party considers  proprietary and confidential  including,  without
              limitation,  trade secrets, marketing and business plans, customer
              lists,  and  information  concerning the operations of the Parties
              (all  of  such   proprietary  and   confidential   information  is
              hereinafter  referred to as the "Confidential  Information").  The
              Party who receives any  Confidential  Information  (the "Receiving
              Party")  agrees  to  maintain  a  confidential   status  for  such
              Confidential  Information,   not  to  use  any  such  Confidential
              Information  for any  purpose  other than the purpose for which it
              was  originally  disclosed  to the  Receiving  Party,  and  not to
              disclose any of such Confidential  Information to any third party,
              unless such information:

              (i)    is or has  become  available  to the  public  from a source
                     other than the Receiving Party;

              (ii)   was already known to the Receiving Party from sources other
                     than the other  Party at the time it was  disclosed  to the
                     Receiving Party and was not obtained by the Receiving Party
                     from such other party in violation of a confidentiality  or
                     similar agreement with such other party;

              (iii)  is disclosed to the Receiving Party by a third party who is
                     not under any legal obligation prohibiting such disclosure;

              (iv)   is required to be disclosed by law;

              (v)    is developed independently by the Receiving Party; or

              (vi)   is  disclosed  to the  Receiving  Party  by a  third  party
                     pursuant  to an  obligation  of  such  third  party  or the
                     exercise of a right by the Receiving Party in circumstances
                     where  no  obligation  of  confidentiality  applies  to the
                     Receiving   Party  with  respect  to  the   information  so
                     disclosed.

         (b)  The  Parties  acknowledge  that they may be  required  to disclose
              Confidential  Information to governmental  agencies or authorities
              by law or in  connection  with the  obtaining of approvals for the

                                      -5-
<PAGE>

              Company,  and each  shall  endeavor  to limit  disclosure  to that
              purpose.  If either  Party is required  to  disclose  Confidential
              Information   pursuant   to  this   paragraph,   such  Party  will
              immediately  give  the  other  Party  written  notice  of any such
              disclosure,  which  notice  shall  specify  the  substance  of the
              disclosure.  The Party  making  such a  disclosure  shall take all
              reasonable   steps  to   prevent   further   disclosure   of  such
              Confidential Information.

7.2      Survival of  Confidentiality:  The  provisions  of this Section 7 shall
         survive the  termination of this  Agreement for any reason  whatsoever.
         Upon such  termination,  the  Parties  shall  return  any  Confidential
         Information which may have been transmitted by the other Party, as well
         as any  copy or  other  reproduction,  including,  without  limitation,
         electronic data reproductions or representations.

8.       Dispute Resolution
         ------------------

8.1      In the event of any  controversy  or claim between the Parties  arising
         out of or in connection  with this Agreement or the breach hereof,  the
         Parties  shall,  in the first  instance,  make a good  faith  effort to
         settle such dispute amicably.

8.2      If such  controversy or claim is not settled within thirty (30) days
         following  written  notice  by one  Party  to the  other  Party  of the
         existence  thereof,  such  controversy  or claim  shall be  settled  by
         arbitration  in  New  York,  NY,  in  accordance  with  the  Commercial
         Arbitration Rules of the American Arbitration  Association and judgment
         upon the award may be entered in any court having jurisdiction thereof.

9.       Notices
         -------

         All notices and other  communications  required or permitted  hereunder
         shall  be  given in  writing  by hand  delivery,  by  facsimile,  or by
         registered  or  certified  mail,  return  receipt  requested,   postage
         prepaid,  addressed to the Party to receive the same at its  respective
         address set forth below,  or at such other  address as may from time to
         time be  designated  by either  Party to the other Party  hereunder  in
         accordance with this Section 9:

         To the Service Provider:

                  Merck KGaA
                  Frankfurter Strasse 250
                  64271 Darmstadt, Germany
                  Attn: Professor Dr. Bernhard Scheuble
                  Facsimile:  011 49-6151-72-5962

                                      -6-
<PAGE>

         With a copy to:

                  Coudert Brothers
                  1114 Avenue of the America
                  New York, New York 10036-7703
                  Attn: Edwin S. Matthews Jr., Esq.
                  Facsimile: 212-626-4120

         To the Company:

                  Pharmaceutical Resources, Inc.
                  One Ram Ridge Road
                  Spring Valley, New York 10977
                  Attn:  Kenneth I. Sawyer
                  Facsimile:  914-425-5097

         With a copy to:

                  Hertzog, Calamari & Gleason
                  100 Park Avenue
                  New York, New York 10017
                  Attn: Stephen Ollendorff, Esq. & Stephen R. Connoni, Esq.
                  Facsimile: 212-213-1199

         All notices shall be effective  when  received.  A notice is considered
         received if a written  confirmation of receipt appears thereon or there
         exists a written fax  confirmation.  Either  Party may by notice to the
         other Party designate a new address for notices, such new address to be
         effective ten (10) days after receipt of designation.

10.      Indemnity
         ---------

10.1     Each Party hereby  agrees to indemnify  and hold  harmless the other
         Party  and  its  respective  shareholders,   directors,   officers  and
         employees from and against any and all costs, losses, claims,  actions,
         demands,   damages  and  liabilities  (including  attorneys'  fees  and
         disbursements)  incurred  by  such  other  party  arising  out of or in
         respect  of (i) any  act,  failure  to act,  or any  assumption  of any
         obligation or  responsibility  by the indemnifying  Party, or by any of
         its  directors,  officers or employees,  which is in  contravention  or
         violation of or in conflict with any of the terms or provisions of this
         Agreement, or (ii) any material breach of any of the representations or
         warranties  made  by  the  indemnifying  Party  under  this  Agreement;
         provided,  however,  that an indemnified Party shall not be entitled to
         indemnification  with respect to any costs,  losses,  claims,  actions,
         demands,  damages  and  liabilities  which was  caused by its own gross
         negligence,  willful  misconduct  or reckless  disregard  of its duties
         hereunder.

10.2     THE SERVICE  PROVIDER  MAKES NO  WARRANTIES,  EXPRESS OR IMPLIED,  WITH
         RESPECT TO THE AGREEMENT OR THE  PERFORMANCE  OF THE SERVICES  PROVIDED
   
                                   -7-
<PAGE>

         HEREUNDER OR THE WORK FURNISHED HEREUNDER, WHETHER ARISING AT LAW OR IN
         EQUITY, EXCEPT AS SET FORTH HEREIN.

10.3     IN NO EVENT,  OTHER THAN  BREACH OF THE EXPRESS  PROVISIONS  OF THIS
         AGREEMENT,  SHALL EITHER PARTY OR A PARTY'S AFFILIATES AND ITS OR THEIR
         SUBCONTRACTORS  AND ITS OR THEIR  OFFICERS,  EMPLOYEES  AND AGENTS,  BE
         LIABLE,  IN CONTRACT,  IN TORT,  OR  OTHERWISE  FOR ANY  INCIDENTAL  OR
         CONSEQUENTIAL  DAMAGES  OF ANY  NATURE  ARISING  AT ANY TIME UNDER THIS
         AGREEMENT,  INCLUDING  SPECIFICALLY,  BUT WITHOUT  LIMITATION,  LOSS OF
         PROFITS  OR  REVENUE,  LOSS OF FULL OR  PARTIAL  USE OF ANY  EQUIPMENT,
         DELAYS, COST OF REPLACEMENTS, COST OF CAPITAL, LOSS OF GOODWILL, CLAIMS
         OF CUSTOMERS, OR OTHER SUCH DAMAGES.

11.      Miscellaneous
         -------------

11.1     Entire  Agreement.  This Agreement,  together with the Annex hereto,
         constitute  the entire  agreement of the Parties hereto with respect to
         the performance of Services by the Service Provider for the Company and
         supersedes and terminates all prior  arrangements  and  agreements,  if
         any,  between  the  Service  Provider  and  the  Company  or any of its
         affiliates with respect to the subject matter hereof.

11.2     No Waiver.  No failure by either Party  hereto to  exercise,  and no
         delay in  exercising,  any right  hereunder  shall  operate as a waiver
         thereof,  nor  shall  any  single  or  partial  exercise  of any  right
         hereunder by either Party preclude any other or future exercise of that
         right or any other right hereunder by that Party.

11.3     Severability.  In case  any one or more of the  provisions  of this
         Agreement  should be invalid,  illegal or unenforceable in any respect,
         the validity,  legality and enforceability of the remaining  provisions
         contained herein shall not in any way be affected or impaired thereby.

11.4     Assignment.  Neither Party may assign or transfer, in whole or in part,
         its rights or interests in this Agreement.

11.5     Amendment.  This  Agreement  may  not  be  amended,  terminated  or
         superseded  except by (i) an agreement  in writing  between the Company
         and the  Service  Provider  and (ii) the prior  written  approval  of a
         majority of the Company Designees (as such term is defined in the Stock
         Purchase Agreement, dated March 25, 1998, between the Company and Lipha
         Americas, Inc.).

                                      -8-
<PAGE>

11.6     Survival:  Any provision of this  Agreement  which can reasonably be
         construed as surviving the  expiration or termination of the Agreement,
         including  but  not  necessarily  limited  to the  indemnification  and
         confidentiality provisions, shall so survive.

11.7     Governing  Law:  This  Agreement,  including  the  Annex,  shall be
         governed by, and construed in accordance with, the laws of the State of
         New York  without  giving  effect  to the  conflict  of law  provisions
         thereof.

11.8     Agreement  to Execute  Documents:  The  Parties  agree in good faith to
         execute any and all  documents  required  for the  performance  of this
         Agreement.

11.9     Counterparts:  This  Agreement  may be  executed  in any  number of
         separate counterparts, each of which, when so executed, shall be deemed
         an  original,  and all of said  counterparts  taken  together  shall be
         deemed to constitute but one and the same instrument.

         IN WITNESS  WHEREOF,  this  Agreement has been executed by the Parties,
effective as of the date above indicated.

PHARMACEUTICAL RESOURCES INC.           MERCK, KGaA



/s/Kenneth I. Sawyer                    /s/Bernhard Scheuble
- -------------------------------         ------------------------------------
By: Kenneth I. Sawyer                   By: Prof. Dr. Bernhard Scheuble
Name:                                   Name:
Title: Chairman & CEO                   Title: Member of the Executive Board



                                        /s/Klaus-Peter Brandis
                                        ------------------------------------
                                        By: Klaus-Peter Brandis
                                        Name:
                                        Title: Head of Legal Department



                                      -9-
<PAGE>



                                      Annex



See Exhibit 10.4




                                                                    Exhibit 10.4


                         PHARMACEUTICAL RESOURCES, INC.


                             Stock Option Agreement


         PHARMACEUTICAL   RESOURCES,   INC.,  a  New  Jersey   corporation  (the
"Company"),  hereby  grants  Merck  KGaA,  a  Kommanditgesellschaft  auf  Aktien
organized  under the laws of  Germany (the "Optionee"),  a  non-statutory  stock
option  (the  "Option")  to purchase  from the  Company up to 820,000  shares of
common stock,  par value $.01 per share, of the Company  ("Option  Shares") at a
price and on the terms set forth in this Option Agreement. The Option is granted
by the Company to the  Optionee in  consideration  for Services (as such term is
defined in the Services Agreement) to be provided by the Optionee to the Company
pursuant to the Services Agreement, dated June 30, 1998, between the Company and
the Optionee (the "Services Agreement").


     SECTION 1. Term of Option. The Option is granted as of the date hereof (the
"Grant Date") and shall be exercisable at any time beginning three years and ten
days after the date hereof;  provided  that, to the extent not  exercised,  this
Option shall terminate on April 30, 2003.

     SECTION 2. Vesting. The Option shall vest on the following schedule:

                                            Cumulative vested
Measured from Grant Date                    portion of Option Shares
- ------------------------                    ------------------------


First anniversary                                one-third
Second anniversary                               two-thirds
Third anniversary                                entire amount


     SECTION 3.  Exercise  of Option.  Subject to the  provisions  hereof,  this
Option may be exercised  in whole or in part at any time,  or from time to time,
to the  extent  vested,  during its term,  as set forth in Section 1 herein,  by
presentation to the Company at its principal  office of the Option Exercise Form
attached hereto,  duly executed and accompanied by payment (either in cash or by
United  States  certified  or  official  bank check  payable to the order of the

<PAGE>

Company) of the Exercise Price for the number of Option Shares specified in such
Form.  Upon receipt of the Option  Exercise Form and such  payment,  the Company
shall,  within five (5) business days, cause to be delivered to the Optionee one
or more  certificates  representing  the  aggregate  number  of  fully-paid  and
nonassessable Option Shares issuable upon exercise as specified in the Form.

     SECTION 4. Exercise Price. The exercise price  ("Exercise  Price") shall be
US $2.00 per share.

     SECTION 5. Reservation of Shares. The Company will reserve for issuance and
delivery upon exercise of this Option all authorized but unissued  Common Shares
or other  shares of  capital  stock of the  Company  (and other  securities  and
property) from time to time receivable upon exercise of this Option.

     SECTION 6. Restrictions on Transfer, Exercise and Registration.

          6.1  Transferability.  This  Option  may  not  be  sold,  transferred,
pledged, assigned or otherwise disposed of (collectively,  "Transferred") by the
Optionee.

          6.2 Compliance  with Securities  Legislation.  No Option Shares may be
transferred  except in full  compliance  with all  applicable  provisions of the
Securities Act of 1933 and of applicable state securities laws.

          6.3 Legend.  Each  certificate for the Option Shares shall be endorsed
with the following legend:

          "THE SECURITIES  REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
          SECURITIES ACT OF 1933 OR UNDER ANY STATE SECURITIES LAWS, AND MAY NOT
          BE SOLD, TRANSFERRED, PLEDGED,  ASSIGNED OR OTHERWISE DISPOSED OF IN
          THE ABSENCE OF  EFFECTIVE  REGISTRATION  STATEMENTS  UNDER  APPLICABLE
          FEDERAL   AND  STATE   SECURITIES   LAWS  OR  AN  OPINION  OF  COUNSEL
          SATISFACTORY   TO  THE  COMPANY  THAT  THE  TRANSFER  IS  EXEMPT  FROM
          REGISTRATION UNDER APPLICABLE FEDERAL AND STATE SECURITIES LAWS."

          6.4  Registration.  The Option  Shares  shall have the  benefit of the
Registration Rights Agreement,  dated March 25, 1998, between the Company, Lipha
Americas, Inc., Genpharm Inc. and the Optionee.

          6.5  Restrictions on Exercise.  The Option may not be exercised if the
issuance of the Option Shares upon such exercise would constitute a violation of
any applicable federal or state securities laws or other laws or regulations. As

                                       2
<PAGE>

a condition to the exercise of the Option,  the Company may require the Optionee
to make any representation and warranty to the Company as may be required by any
applicable law or regulation.

     SECTION 7. Rights of the  Optionee.  The Optionee  shall not be entitled to
any rights of a  shareholder  of the Company with  respect to the Option  Shares
solely as a result of the grant of the  Option.  Such  rights  shall  exist only
after  issuance  of a stock  certificate  in  accordance  with  Section  3 above
following  the  Optionee's  exercise  of  the  Option  (or  a  portion  thereof)
hereunder. The rights of the Optionee are limited to those expressly provided in
this Option.

     SECTION 8. Termination of Services Agreement

         (a) If the Services Agreement  terminates other than as a result of the
Optionee's  Breach and the Optionee  thereby  ceases to provide  Services to the
Company,  this Option may be exercised in full during the  remaining  balance of
the term of the Option  (but not in any event  before  three  years and ten days
have elapsed from the date hereof or beyond the  expiration  of the term of this
Option), notwithstanding anything to the contrary in this Option Agreement.

         (b) If the Services Agreement  terminates as a result of the Optionee's
Breach and the Optionee thereby ceases to provide  Services to the Company,  the
Optionee may exercise  the Option,  to the extent  vested as of the date of such
termination,  during the remaining balance of the term of the Option (but not in
any event  before  three years and ten days have elapsed from the date hereof or
beyond the expiration of the term of the Option).

         (c) For purposes of this section, "Breach" means willful refusal of the
Optionee  to provide  Services to the Company in  accordance  with the  Services
Agreement.

     SECTION 9. Anti-Dilution Provisions.

          9.1 Adjustments for Stock  Dividends;  Combinations,  Etc. In case the
Company shall do any of the following (each, an "Event"):

          (a)  declare a dividend  or other  distribution  on its common  shares
payable in common shares of the Company;

          (b) effect a  subdivision  of its  outstanding  common  shares  into a
greater number of common shares (by  reclassification,  stock split or otherwise
by payment of a dividend in common shares);

    
                                        3

<PAGE>

          (c) effect a  combination  of its  outstanding  common  shares  into a
lesser  number  of  common  shares  (by   reclassification,   reverse  split  or
otherwise);

          (d) issue by reclassification,  exchange or substitution of its common
shares any shares of capital stock of the Company; or

          (e) effect any other transaction having a similar effect,

then the Exercise  Price in effect at the time of the record date for such Event
shall be adjusted to a price  determined by multiplying such Exercise Price by a
fraction,  the  numerator of which shall be the number of shares of common stock
outstanding  immediately  prior to such Event and the denominator of which shall
be the number of Common Shares  outstanding  immediately  after such Event. Each
such  adjustment of the Exercise  Price shall be calculated to the nearest cent.
No such adjustment shall be made in an amount less than One Cent ($.01), but any
such amount  shall be carried  forward and shall be given  effect in  connection
with the next subsequent adjustment.  Such adjustment shall be made successively
whenever any Event shall occur.

          9.2 Adjustment in the Number of Option  Shares.  Whenever the Exercise
Price  shall be adjusted  pursuant  to Section 9.1 hereof,  the number of Option
Shares which the Optionee may purchase upon exercise of the Service Option shall
be adjusted,  to the nearest full share,  by  multiplying  such number of Option
Shares  immediately  prior to such  adjustment  by a fraction,  the numerator of
which shall be the Exercise Price  immediately  prior to such adjustment and the
denominator of which shall be the Exercise Price immediately thereafter.

          9.3  Adjustment  for   Consolidation   or  Merger.   In  case  of  any
consolidation  or merger to which the  Company  shall be a party,  other  than a
consolidation  or  merger  in  which  the  Company  shall  be the  surviving  or
continuing  corporation,  or in case of any sale or conveyance to another entity
of all or  substantially  all of the property of the Company,  or in the case of
any statutory exchange of securities with another entity (including any exchange
effected in connection with a merger of any other corporation with the Company),
the Optionee  shall have the right  thereafter  to receive from the Company upon
exercise of the Option the kind and amount of securities, cash or other property
which it would have owned or have been  entitled  to receive  immediately  after

                                                    4

<PAGE>

such  consolidation,  merger,  statutory  exchange,  sale or conveyance had this
Option  been  exercised   immediately  prior  to  the  effective  date  of  such
transaction  and,  if  necessary,  appropriate  adjustment  shall be made in the
application  of the  provisions  set forth in this Section 9 with respect to the
rights and interests  thereafter of the Optionee to the end that the  provisions
set forth in this Section 9 shall thereafter correspondingly be made applicable,
as nearly as then may reasonably be, in relation to any shares of stock or other
securities or property thereafter  deliverable upon the exercise of this Option.
Notice  of  any  such  consolidation,   merger,   statutory  exchange,  sale  or
conveyance,  and of the provisions proposed to be adjusted, shall, to the extent
reasonably practicable, be mailed to the Optionee not less than thirty (30) days
prior to such event.

     SECTION 10. Fully Paid Shares;  Taxes.  The Company  agrees that the common
shares of the Company  represented by each and every  certificate for the Option
Shares  delivered  on the exercise of this Option in  accordance  with the terms
hereof shall, at the time of such delivery,  be validly  issued,  fully-paid and
nonassessable,  free and clear of all liens, pledges,  options,  claims or other
encumbrances.  The Company  further  covenants and agrees that it will pay, when
due and payable, any and all Federal and state stamp,  original issue or similar
taxes (but  specifically not including any income taxes) which may be payable in
respect of the issue of any Option Shares or certificates therefor.

     SECTION 11. Notices. All notices hereunder shall be in writing and shall be
given: if to the Company,  at One Ram Ridge Road, Spring Valley,  New York 10977
(attention:  Kenneth I.  Sawyer),  fax number:  (914)  425-5097,  with a copy to
Hertzog,  Calamari  &  Gleason,  at 100 Park  Avenue,  New York,  New York 10017
(attention: Stephen Ollendorff, Esq., and Stephen R. Connoni, Esq.), fax number:
(212) 213-1199, or if to the Optionee,  at Merck KGaA,  Frankfurter Strasse 250,
64271 Darmstadt,  Germany,  (attention:  Professor Dr. Bernhard  Scheuble),  fax
number: 011 49-6151-72-5962,  with a copy to Coudert Brothers, at 1114 Avenue of
the Americas, New York, New York 10036 (attention:  Edwin S. Matthews, Jr.), fax
number:  (212)  626-  4120.  Any  notice  shall be deemed to have been  given if
personally  delivered or sent by express  commercial courier or delivery service
or by telegram,  telefax, telex or facsimile  transmission.  Any notice given in
any other manner shall be deemed given when actually received.


                                        5

<PAGE>

     SECTION 12.  Amendments;  Waiver.  This  Option may not be amended,  and no
provision hereof may be waived,  without the prior written consent of at least a
majority of the Company  Designees (as defined in the Stock Purchase  Agreement,
dated March 25, 1998, between the Company and Lipha Americas, Inc.) on behalf of
the Company and except pursuant to a written instrument  executed by the Company
and the Optionee.

     SECTION 13. Headings. The headings of the Sections of this Option have been
inserted for  convenience of reference only and shall not be deemed to be a part
of this Option.

     SECTION  14.  Governing  Law.  This  Option is issued  under,  and shall be
governed by and construed in accordance  with, the laws of the State of New York
applicable to contracts made and to be performed wholly within such State.

     IN WITNESS WHEREOF,  the Company has caused this Option to be signed on its
behalf, in its corporate name, by its duly authorized officer, on June 30, 1998.


                                    PHARMACEUTICAL RESOURCES, INC.



                                    By: /s/Kenneth I. Sawyer
                                       ---------------------------------
                                       Kenneth I. Sawyer
                                       President


Attest:



/s/Dennis J. O'Connor
- ------------------------------
Dennis J. O'Connor
Secretary


                                    MERCK KGaA


                                    By:/s/Bernhard Scheuble
                                       ---------------------------------
                                     Name: Prof. Dr. Bernhard Scheuble
                                     Title: Member of the Executive
                                               Board


                                    By:/s/Klaus-Peter Brandis
                                       ---------------------------------
                                    Name: Klaus-Peter Brandis
                                    Title: Head of Legal Department


                                        6

<PAGE>


                         PHARMACEUTICAL RESOURCES, INC.

                           STOCK OPTION EXERCISE FORM


         For services  performed,  the undersigned  hereby irrevocably elects to
exercise  the  attached  Option to  purchase  ______  shares of common  stock of
Pharmaceutical  Resources,  Inc. at the  Exercise  Price of $2.00 per share,  in
accordance with the Option Agreement.

         Attached  hereto is cash or a U.S.  certified  or  official  bank check
payable to the order of the  Company in the amount of the total  Exercise  Price
set forth above.


                                   -------------------------------------
                                   Name of Optionee



                                   -------------------------------------
                                   Signature of Optionee
                                   or Authorized Representative



                                   -------------------------------------
                                   Name and Title of Authorized
                                   Representative


                                   -------------------------------------
                                   Address of Optionee



                                   -------------------------------------
                                   Date



                                                                    Exhibit 10.5



                           GENPHARM SERVICES AGREEMENT



         THIS SERVICES AGREEMENT (the "Agreement") is dated as of June 30, 1998,
between  Pharmaceutical  Resources,  Inc.,  a  New  Jersey  corporation,   whose
principal  offices are located at One Ram Ridge Road,  Spring  Valley,  New York
10977 (the "Company"),  and Genpharm Inc., a corporation  organized and existing
under the laws of the Province of Ontario,  Canada,  whose principal offices are
located at 85 Advance Road,  Etobicoke,  Ontario,  M8Z 2S6, Canada (the "Service
Provider"),  each of which may be  referred  to  individually  as a  "Party"  or
collectively as the "Parties." This Agreement and the Annex contemplated  hereby
are collectively referred to as the "Agreement" unless indicated otherwise.

         WHEREAS,  the Service Provider possesses,  inter alia,  substantial and
long  acquired  technical  expertise  and  know-how  in  the  areas  of  product
development, clinical studies and trials, marketing, distribution, financial and
administrative  support,  and other areas related to the  development of generic
drugs; and

         WHEREAS,  the Company wishes to engage certain  services of the Service
Provider,  and the Service  Provider is willing to perform the Services  defined
herein,  on the terms and conditions set forth herein,  in  consideration of the
issuance  by the Company to the  Service  Provider of a stock  option to acquire
351,040 shares of common stock of the Company (the "Option Shares"), in the form
of the Annex hereto (the "Option").

         NOW, THEREFORE, in consideration of the mutual obligations and benefits
set forth in this  Agreement,  the receipt and  sufficiency  of which are hereby
acknowledged,  the Company and the Service Provider agree to the following terms
and conditions:

1.       Services
         --------

1.1      At the request of the Company  and  subject to the  provisions  of this
         Agreement,  the  Service  Provider  will  perform  some  or  all of the
         following services (the "Services") with respect to certain products as
         agreed to between the parties from time to time (the "Products"):

a.       providing  assistance  and advice in the promotion,  marketing,  and/or
         distribution   of  a   patented   computer   software   in   Electronic
         Documentation  Management  System on which  the  Company  has  obtained
         exclusive marketing rights.

                                      -1-
<PAGE>

b.       assisting  and  advising  the  planning,  developing  and  producing of
         advertising  and  promotional  programs  for  the  Products,  including
         selection of advertising  agencies,  advertising media and the type and
         scope of programs offered.

c.       assisting  the  distributing  of samples,  literature  and other direct
         promotional  materials through the mail, sales representatives or other
         customary methods.

d.       advising the training and maintaining of sales  representatives to make
         personal presentations of the Products to health care professionals and
         potential  purchasers  of the Products in the  Territory (as defined in
         the Distribution  Agreement,  dated March 25, 1998, between the Company
         and the Services Provider).

e.       providing   assistance  in  the   development  and   dissemination   of
         professional education programs and materials.

f.       providing  consulting services for the Company in developing  marketing
         plans for the Products,  which will include market  research  analyses,
         objectives  and  strategies,  sales  forecasts,  proposed  pricing  and
         promotional programs.

g.       providing assistance and advice in public relations services, including
         responses to inquiries, preparation of press releases and announcements
         regarding the Products.

h.       advising  the  Company  as to the  state of the  Product  market in the
         Territory,  if such  information  shall be  available  from the Service
         Provider,  and  important  market  developments  and trends in order to
         facilitate the Company's production scheduling.  Such information shall
         be provided in periodic  reports when available,  with important market
         developments promptly communicated.

1.2      The Service Provider shall use its reasonable efforts to ensure that
         the Services  provided  hereunder are consistent with accepted industry
         standards and in a professionally competent manner.

1.3      The  Service  Provider  shall use its  reasonable  efforts to render
         Services in material compliance with all applicable legal requirements.

1.4      In order for the Service Provider to provide the Services hereunder,
         the Company shall disclose to the Service Provider such information and
         data which is reasonably requested by the Service Provider. The Service
         Provider  shall  use  such  information  and  data  exclusively  in the
         performance of its obligations hereunder,  and such disclosure shall be
         subject  to the  terms  and  conditions  of this  Agreement,  including
         Section 7, if such disclosure is of Confidential Information as defined
         herein.

                                      -2-
<PAGE>

4.       Payment Terms
         -------------

         In consideration of the Services to be rendered by the Service Provider
hereunder and of its undertaking to perform such Services for the benefit of the
Company during the term of this  Agreement,  the Company shall make full payment
of its  obligations  hereunder  in the form of the  Option.  Such  Option  shall
entitle the Service  Provider  to  acquire,  beginning  three years and ten days
after the date  hereof,  351,040  shares of the  Company's  common  stock at the
Exercise  Price (as  specified  in the Option) for the Services  provided.  Such
Option  shall  expire at 5:00 P.M.,  New York City time,  on June 30, 2003 if it
shall not have been  fully  exercised.  The  Company  shall also  reimburse  the
Service  Provider for all  reasonable  out-of-pocket  costs and expenses  (which
shall not include any direct or indirect  labor  costs)  incurred in  connection
with the performance of such Services,  including,  without  limitation,  travel
expenses,  meals and lodging,  cost for supplies  directly consumed in rendering
such Services,  storage and warehousing  costs,  printing and duplicating costs,
and transport and similar costs;  provided,  any such reimbursement in excess of
$10,000 in any calendar  quarter,  shall  require the  Company's  prior  written
approval.  The Company shall be under no  obligation to make any other  payments
for the Services contemplated herein pursuant to this Agreement.

3.       Schedule of Performance
         -----------------------

         During the term of this Agreement,  the Service  Provider shall perform
the Services  from time to time,  as  reasonably  required by the Company and as
agreed upon between the Company and the Service  Provider upon,  advance written
notice  which  shall be not less than ten  business  days  before  the  proposed
service date. Upon receipt of such notice,  the Service Provider shall have five
business days to accept or, in  consultation  with the Company,  reschedule  the
service date. The Company  hereby  acknowledges  that the Service  Provider must
take into  consideration its own labor  constraints and existing  commitments of
its own business and to other  parties in  determining  the service date of such
Services.  In any event, the Services requested by the Company shall not be more
than a total of 100 man hours per calendar  quarter unless the Service  Provider
expressly agrees otherwise.

4.       Term
         ----

         This  Agreement  shall be effective  from the date of execution of this
Agreement and shall remain in effect for thirty-six (36) months.

5.       Representations and Warranties
         ------------------------------

5.1      Each  Party  hereby  represents  and  warrants  to the  other  Party as
follows:

         (a)  It is a corporation  duly organized,  validly existing and in good
              standing under the laws of its jurisdiction of incorporation;


                                      -3-
<PAGE>

         (b)  It has the corporate power and authority to own its assets,  carry
              on its  business  and execute and deliver  this  Agreement  and to
              perform its obligations hereunder;

         (c)  It has taken all appropriate and necessary action to authorize the
              execution, delivery and performance of this Agreement;

         (d)  All consents,  approvals,  licenses and authorizations of, and all
              filings  and  registrations   with,  any  governmental   authority
              necessary  for  the  due  execution,   delivery,  performance  and
              enforceability  of this  Agreement,  have been obtained and are in
              full force and effect; and

         (e)  This Agreement  constitutes a legal, valid and binding obligation,
              enforceable in accordance with its terms. The execution,  delivery
              and  performance  of this Agreement will not violate any provision
              of any applicable laws or regulations.

6.       Independent Contractor
         ----------------------

         This  Agreement  does not  constitute or create (and the Parties do not
         intend  to  create  hereby)  a  joint  venture,   pooling  arrangement,
         partnership,  or formal  business  organization of any kind between and
         among any of the Parties, and the rights and obligations of the Parties
         shall be only those  expressly set forth herein.  The Service  Provider
         will perform the Services as an independent contractor and shall not be
         considered,  for any  purpose,  to be an  agent of the  Company  or its
         affiliated companies. Each Party shall be responsible for providing its
         own personnel and workers'  compensation,  medical  coverage or similar
         benefits,  any life,  disability or other  insurance  protection.  Each
         Party shall be solely  responsible  for the payment of social  security
         benefits,  unemployment  insurance,  pension benefits,  withholding any
         required  amounts  for  income and other  employment-related  taxes and
         benefits of its own employees,  and shall make its own arrangements for
         injury,  illness or other  insurance  coverage to protect  itself,  its
         affiliated companies,  its subcontractors and personnel from any costs,
         expenses,  damages, loss and/or liability arising out of performance of
         the Services, or any transportation  associated therewith.  The Service
         Provider has no power or authority to act for,  represent,  or bind the
         Company or its affiliated companies in any manner.

7.       Confidentiality
         ---------------

7.1      (a)  The Parties  recognize  that in the course of  performance  of the
              Agreement,  either of them may  disclose to the other  information
              about the  disclosing  Party's  business or activities  which such
              Party considers  proprietary and confidential  including,  without
              limitation,  trade secrets, marketing and business plans, customer
              lists,  and  information  concerning the operations of the Parties
              (all  of  such   proprietary  and   confidential   information  is
              hereinafter  referred to as the "Confidential  Information").  The

                                      -4-
<PAGE>

              Party who receives any  Confidential  Information  (the "Receiving
              Party")  agrees  to  maintain  a  confidential   status  for  such
              Confidential  Information,   not  to  use  any  such  Confidential
              Information  for any  purpose  other than the purpose for which it
              was  originally  disclosed  to the  Receiving  Party,  and  not to
              disclose any of such Confidential  Information to any third party,
              unless such information:

              (i)    is or has  become  available  to the  public  from a source
                     other than the Receiving Party;

              (ii)   was already known to the Receiving Party from sources other
                     than the other  Party at the time it was  disclosed  to the
                     Receiving Party and was not obtained by the Receiving Party
                     from such other party in violation of a confidentiality  or
                     similar agreement with such other party;

              (iii)  is disclosed to the Receiving Party by a third party who is
                     not under any legal obligation prohibiting such disclosure;

              (iv)   is required to be disclosed by law;

              (v)    is developed independently by the Receiving Party; or

              (vi)   is  disclosed  to the  Receiving  Party  by a  third  party
                     pursuant  to an  obligation  of  such  third  party  or the
                     exercise of a right by the Receiving Party in circumstances
                     where  no  obligation  of  confidentiality  applies  to the
                     Receiving   Party  with  respect  to  the   information  so
                     disclosed.

        (b)   The  Parties  acknowledge  that they may be  required  to disclose
              Confidential  Information to governmental  agencies or authorities
              by law or in  connection  with the  obtaining of approvals for the
              Company,  and each  shall  endeavor  to limit  disclosure  to that
              purpose.  If either  Party is required  to  disclose  Confidential
              Information   pursuant   to  this   paragraph,   such  Party  will
              immediately  give  the  other  Party  written  notice  of any such
              disclosure,  which  notice  shall  specify  the  substance  of the
              disclosure.  The Party  making  such a  disclosure  shall take all
              reasonable   steps  to   prevent   further   disclosure   of  such
              Confidential Information.

7.2      Survival of  Confidentiality:  The  provisions  of this Section 7 shall
         survive the  termination of this  Agreement for any reason  whatsoever.
         Upon such  termination,  the  Parties  shall  return  any  Confidential
         Information which may have been transmitted by the other Party, as well
         as any  copy or  other  reproduction,  including,  without  limitation,
         electronic data reproductions or representations.

                                       -5-
<PAGE>


8.       Dispute Resolution
         ------------------

8.1      In the event of any  controversy  or claim between the Parties  arising
         out of or in connection  with this Agreement or the breach hereof,  the
         Parties  shall,  in the first  instance,  make a good  faith  effort to
         settle such dispute amicably.

8.2      If such  controversy  or claim is not settled  within  thirty (30) days
         following  written  notice  by one  Party  to the  other  Party  of the
         existence  thereof,  such  controversy  or claim  shall be  settled  by
         arbitration  in  New  York,  NY,  in  accordance  with  the  Commercial
         Arbitration Rules of the American Arbitration  Association and judgment
         upon the award may be entered in any court having jurisdiction thereof.

9.       Notices
         -------

         All notices and other  communications  required or permitted  hereunder
         shall  be  given in  writing  by hand  delivery,  by  facsimile,  or by
         registered  or  certified  mail,  return  receipt  requested,   postage
         prepaid,  addressed to the Party to receive the same at its  respective
         address set forth below,  or at such other  address as may from time to
         time be  designated  by either  Party to the other Party  hereunder  in
         accordance with this Section 9:

         To the Service Provider:

                  Genpharm Inc.
                  85 Advance Road
                  Etobicoke, Ontario, M8Z 2S9
                  Attn: [Chief Financial Officer]
                  Facsimile:  (416) 236-2940

         With a copy to:

                  Coudert Brothers
                  1114 Avenue of the America
                  New York, New York 10036-7703
                  Attn: Edwin S. Matthews Jr., Esq.
                  Facsimile: 212-626-4120

                                      -6-
<PAGE>

         To the Company:

                  Pharmaceutical Resources, Inc.
                  One Ram Ridge Road
                  Spring Valley, New York 10977
                  Attn:  Kenneth I. Sawyer
                  Facsimile:  914-425-5097

         With a copy to:

                  Hertzog, Calamari & Gleason
                  100 Park Avenue
                  New York, New York 10017
                  Attn: Stephen Ollendorff, Esq. & Stephen R. Connoni, Esq.
                  Facsimile: 212-213-1199

         All notices shall be effective  when  received.  A notice is considered
         received if a written  confirmation of receipt appears thereon or there
         exists a written fax  confirmation.  Either  Party may by notice to the
         other Party designate a new address for notices, such new address to be
         effective ten (10) days after receipt of designation.

10.      Indemnity
         ---------

10.1     Each Party hereby  agrees to indemnify  and hold  harmless the other
         Party  and  its  respective  shareholders,   directors,   officers  and
         employees from and against any and all costs, losses, claims,  actions,
         demands,   damages  and  liabilities  (including  attorneys'  fees  and
         disbursements)  incurred  by  such  other  party  arising  out of or in
         respect  of (i) any  act,  failure  to act,  or any  assumption  of any
         obligation or  responsibility  by the indemnifying  Party, or by any of
         its  directors,  officers or employees,  which is in  contravention  or
         violation of or in conflict with any of the terms or provisions of this
         Agreement, or (ii) any material breach of any of the representations or
         warranties  made  by  the  indemnifying  Party  under  this  Agreement;
         provided,  however,  that an indemnified Party shall not be entitled to
         indemnification  with respect to any costs,  losses,  claims,  actions,
         demands,  damages  and  liabilities  which was  caused by its own gross
         negligence,  willful  misconduct  or reckless  disregard  of its duties
         hereunder.

10.2     THE SERVICE  PROVIDER  MAKES NO  WARRANTIES,  EXPRESS OR IMPLIED,  WITH
         RESPECT TO THE AGREEMENT OR THE  PERFORMANCE  OF THE SERVICES  PROVIDED
         HEREUNDER OR THE WORK FURNISHED HEREUNDER, WHETHER ARISING AT LAW OR IN
         EQUITY, EXCEPT AS SET FORTH HEREIN.

10.3     IN NO EVENT,  OTHER  THAN  BREACH  OF THE  EXPRESS  PROVISIONS  OF THIS
         AGREEMENT,  SHALL EITHER PARTY OR A PARTY'S AFFILIATES AND ITS OR THEIR


                                      -7-
<PAGE>

         SUBCONTRACTORS  AND ITS OR THEIR  OFFICERS,  EMPLOYEES  AND AGENTS,  BE
         LIABLE,  IN CONTRACT,  IN TORT,  OR  OTHERWISE  FOR ANY  INCIDENTAL  OR
         CONSEQUENTIAL  DAMAGES  OF ANY  NATURE  ARISING  AT ANY TIME UNDER THIS
         AGREEMENT,  INCLUDING  SPECIFICALLY,  BUT WITHOUT  LIMITATION,  LOSS OF
         PROFITS  OR  REVENUE,  LOSS OF FULL OR  PARTIAL  USE OF ANY  EQUIPMENT,
         DELAYS, COST OF REPLACEMENTS, COST OF CAPITAL, LOSS OF GOODWILL, CLAIMS
         OF CUSTOMERS, OR OTHER SUCH DAMAGES.

11.      Miscellaneous
         -------------

11.1     Entire  Agreement.  This  Agreement,  together  with the Annex  hereto,
         constitute  the entire  agreement of the Parties hereto with respect to
         the performance of Services by the Service Provider for the Company and
         supersedes and terminates all prior  arrangements  and  agreements,  if
         any,  between  the  Service  Provider  and  the  Company  or any of its
         affiliates with respect to the subject matter hereof.

11.2     No Waiver. No failure by either Party hereto to exercise,  and no delay
         in exercising,  any right  hereunder shall operate as a waiver thereof,
         nor shall any  single or partial  exercise  of any right  hereunder  by
         either Party preclude any other or future exercise of that right or any
         other right hereunder by that Party.

11.3     Severability.  In  case  any  one or  more  of the  provisions  of this
         Agreement  should be invalid,  illegal or unenforceable in any respect,
         the validity,  legality and enforceability of the remaining  provisions
         contained herein shall not in any way be affected or impaired thereby.

11.4     Assignment.  Neither Party may assign or transfer, in whole or in part,
         its rights or interests in this Agreement.

11.5     Amendment. This Agreement may not be amended,  terminated or superseded
         except by (i) an  agreement  in writing  between  the  Company  and the
         Service  Provider and (ii) the prior written  approval of a majority of
         the Company  Designees  (as such term is defined in the Stock  Purchase
         Agreement,  dated  March  25,  1998,  between  the  Company  and  Lipha
         Americas, Inc.).

11.6     Survival:  Any  provision of this  Agreement  which can  reasonably  be
         construed as surviving the  expiration or termination of the Agreement,
         including  but  not  necessarily  limited  to the  indemnification  and
         confidentiality provisions, shall so survive.

11.7     Governing Law: This Agreement,  including the Annex,  shall be governed
         by, and construed in accordance with, the laws of the State of New York
         without  giving effect to the conflict of law  provisions  thereof.

                                      -8-
<PAGE>

11.8     Agreement  to Execute  Documents:  The  Parties  agree in good faith to
         execute any and all  documents  required  for the  performance  of this
         Agreement.

11.9     Counterparts:  This Agreement may be executed in any number of separate
         counterparts,  each of  which,  when so  executed,  shall be  deemed an
         original,  and all of said counterparts  taken together shall be deemed
         to constitute but one and the same instrument.

         IN WITNESS  WHEREOF,  this  Agreement has been executed by the Parties,
effective as of the date above indicated.

PHARMACEUTICAL RESOURCES INC.                GENPHARM INC.



/s/Kenneth I. Sawyer                         /s/J.N. Tabatznik
- ------------------------------               -----------------------------
By: Kenneth I. Sawyer                        By: J.N. Tabatznik
Name:                                        Name:
Title: Chairman & CEO                        Title: Chief Executive Officer

                                      -9-
<PAGE>



                                     ANNEX


See Exhibit 10.6










                                      -10-

                                                                    Exhibit 10.6


                         PHARMACEUTICAL RESOURCES, INC.


                             Stock Option Agreement


         PHARMACEUTICAL   RESOURCES,   INC.,  a  New  Jersey   corporation  (the
"Company"),  hereby grants  Genpharm Inc., a corporation  organized and existing
under  the  laws  of  the  Province  of  Ontario,  Canada  (the  "Optionee"),  a
non-statutory  stock option (the  "Option")  to purchase  from the Company up to
351,040  shares of  common  stock,  par value  $.01 per  share,  of the  Company
("Option  Shares")  at a  price  and on the  terms  set  forth  in  this  Option
Agreement. The Option is granted by the Company to the Optionee in consideration
for Services (as such term is defined in the Services  Agreement) to be provided
by the Optionee to the Company  pursuant to the Services  Agreement,  dated June
30, 1998, between the Company and the Optionee (the "Services Agreement").


     SECTION 1. Term of Option. The Option is granted as of the date hereof (the
"Grant Date") and shall be exercisable at any time beginning three years and ten
days after the date hereof;  provided  that, to the extent not  exercised,  this
Option shall terminate on April 30, 2003.

     SECTION 2. Vesting. The Option shall vest on the following schedule:


                                                Cumulative vested
Measured from Grant Date                        portion of Option Shares
- ------------------------                        ------------------------

First anniversary                                 one-third
Second anniversary                                two-thirds
Third anniversary                                 entire amount


     SECTION 3.  Exercise  of Option.  Subject to the  provisions  hereof,  this
Option may be exercised  in whole or in part at any time,  or from time to time,
to the  extent  vested,  during its term,  as set forth in Section 1 herein,  by
presentation to the Company at its principal  office of the Option Exercise Form
attached hereto,  duly executed and accompanied by payment (either in cash or by
United  States  certified  or  official  bank check  payable to the order of the

<PAGE>

Company) of the Exercise Price for the number of Option Shares specified in such
Form.  Upon receipt of the Option  Exercise Form and such  payment,  the Company
shall,  within five (5) business days, cause to be delivered to the Optionee one
or more  certificates  representing  the  aggregate  number  of  fully-paid  and
nonassessable Option Shares issuable upon exercise as specified in the Form.

     SECTION 4. Exercise Price. The exercise price  ("Exercise  Price") shall be
US $2.00 per share.

     SECTION 5. Reservation of Shares. The Company will reserve for issuance and
delivery upon exercise of this Option all authorized but unissued  Common Shares
or other  shares of  capital  stock of the  Company  (and other  securities  and
property) from time to time receivable upon exercise of this Option.

     SECTION 6. Restrictions on Transfer, Exercise and Registration.

          6.1  Transferability.  This  Option  may  not  be  sold,  transferred,
pledged, assigned or otherwise disposed of (collectively,  "Transferred") by the
Optionee.

          6.2 Compliance  with Securities  Legislation.  No Option Shares may be
transferred  except in full  compliance  with all  applicable  provisions of the
Securities Act of 1933 and of applicable state securities laws.

          6.3 Legend.  Each  certificate for the Option Shares shall be endorsed
with the following legend:

         "THE SECURITIES  REPRESENTED  HEREBY HAVE NOT BEEN REGISTERED UNDER THE
         SECURITIES ACT OF 1933 OR UNDER ANY STATE  SECURITIES LAWS, AND MAY NOT
         BE SOLD, TRANSFERRED, PLEDGED, ASSIGNED OR OTHERWISE DISPOSED OF IN THE
         ABSENCE OF EFFECTIVE  REGISTRATION  STATEMENTS UNDER APPLICABLE FEDERAL
         AND STATE SECURITIES LAWS OR AN OPINION OF COUNSEL  SATISFACTORY TO THE
         COMPANY THAT THE TRANSFER IS EXEMPT FROM REGISTRATION  UNDER APPLICABLE
         FEDERAL AND STATE SECURITIES LAWS."

          6.4  Registration.  The Option  Shares  shall have the  benefit of the
Registration Rights Agreement,  dated March 25, 1998, between the Company, Lipha
Americas, Inc., Merck KGaA and the Optionee.

          6.5  Restrictions on Exercise.  The Option may not be exercised if the
issuance of the Option Shares upon such exercise would constitute a violation of
any applicable federal or state securities laws or other laws or regulations. As

                                       2
<PAGE>

a condition to the exercise of the Option,  the Company may require the Optionee
to make any representation and warranty to the Company as may be required by any
applicable law or regulation.

     SECTION 7. Rights of the  Optionee.  The Optionee  shall not be entitled to
any rights of a  shareholder  of the Company with  respect to the Option  Shares
solely as a result of the grant of the  Option.  Such  rights  shall  exist only
after  issuance  of a stock  certificate  in  accordance  with  Section  3 above
following  the  Optionee's  exercise  of  the  Option  (or  a  portion  thereof)
hereunder. The rights of the Optionee are limited to those expressly provided in
this Option.

     SECTION 8. Termination of Services Agreement

          (a) If the Services Agreement terminates other than as a result of the
Optionee's  Breach and the Optionee  thereby  ceases to provide  Services to the
Company,  this Option may be exercised in full during the  remaining  balance of
the term of the Option  (but not in any event  before  three  years and ten days
have elapsed from the date hereof or beyond the  expiration  of the term of this
Option), notwithstanding anything to the contrary in this Option Agreement.

          (b) If the Services Agreement terminates as a result of the Optionee's
Breach and the Optionee thereby ceases to provide  Services to the Company,  the
Optionee may exercise  the Option,  to the extent  vested as of the date of such
termination,  during the remaining balance of the term of the Option (but not in
any event  before  three years and ten days have elapsed from the date hereof or
beyond the expiration of the term of the Option).

          (c) For purposes of this section,  "Breach"  means willful  refusal of
the Optionee to provide  Services to the Company in accordance with the Services
Agreement.

     SECTION 9. Anti-Dilution Provisions.

          9.1. Adjustments for Stock Dividends;  Combinations,  Etc. In case the
Company shall do any of the following (each, an "Event"):

          (a)  declare a dividend  or other  distribution  on its common  shares
payable in common shares of the Company;

          (b) effect a  subdivision  of its  outstanding  common  shares  into a
greater number of common shares (by  reclassification,  stock split or otherwise
by payment of a dividend in common shares);

                                       3
<PAGE>

          (c) effect a  combination  of its  outstanding  common  shares  into a
lesser  number  of  common  shares  (by   reclassification,   reverse  split  or
otherwise);

          (d) issue by reclassification,  exchange or substitution of its common
shares any shares of capital stock of the Company; or

          (e) effect any other transaction having a similar effect,

then the Exercise  Price in effect at the time of the record date for such Event
shall be adjusted to a price  determined by multiplying such Exercise Price by a
fraction,  the  numerator of which shall be the number of shares of common stock
outstanding  immediately  prior to such Event and the denominator of which shall
be the number of Common Shares  outstanding  immediately  after such Event. Each
such  adjustment of the Exercise  Price shall be calculated to the nearest cent.
No such adjustment shall be made in an amount less than One Cent ($.01), but any
such amount  shall be carried  forward and shall be given  effect in  connection
with the next subsequent adjustment.  Such adjustment shall be made successively
whenever any Event shall occur.

          9.2 Adjustment in the Number of Option  Shares.  Whenever the Exercise
Price  shall be adjusted  pursuant  to Section 9.1 hereof,  the number of Option
Shares which the Optionee may purchase upon exercise of the Service Option shall
be adjusted,  to the nearest full share,  by  multiplying  such number of Option
Shares  immediately  prior to such  adjustment  by a fraction,  the numerator of
which shall be the Exercise Price  immediately  prior to such adjustment and the
denominator of which shall be the Exercise Price immediately thereafter.

          9.3  Adjustment  for   Consolidation   or  Merger.   In  case  of  any
consolidation  or merger to which the  Company  shall be a party,  other  than a
consolidation  or  merger  in  which  the  Company  shall  be the  surviving  or
continuing  corporation,  or in case of any sale or conveyance to another entity
of all or  substantially  all of the property of the Company,  or in the case of
any statutory exchange of securities with another entity (including any exchange
effected in connection with a merger of any other corporation with the Company),
the Optionee  shall have the right  thereafter  to receive from the Company upon
exercise of the Option the kind and amount of securities, cash or other property
which it would have owned or have been  entitled  to receive  immediately  after
                                       4
<PAGE>

such  consolidation,  merger,  statutory  exchange,  sale or conveyance had this
Option  been  exercised   immediately  prior  to  the  effective  date  of  such
transaction  and,  if  necessary,  appropriate  adjustment  shall be made in the
application  of the  provisions  set forth in this Section 9 with respect to the
rights and interests  thereafter of the Optionee to the end that the  provisions
set forth in this Section 9 shall thereafter correspondingly be made applicable,
as nearly as then may reasonably be, in relation to any shares of stock or other
securities or property thereafter  deliverable upon the exercise of this Option.
Notice  of  any  such  consolidation,   merger,   statutory  exchange,  sale  or
conveyance,  and of the provisions proposed to be adjusted, shall, to the extent
reasonably practicable, be mailed to the Optionee not less than thirty (30) days
prior to such event.

     SECTION 10. Fully Paid Shares;  Taxes.  The Company  agrees that the common
shares of the Company  represented by each and every  certificate for the Option
Shares  delivered  on the exercise of this Option in  accordance  with the terms
hereof shall, at the time of such delivery,  be validly  issued,  fully-paid and
nonassessable,  free and clear of all liens, pledges,  options,  claims or other
encumbrances.  The Company  further  covenants and agrees that it will pay, when
due and payable, any and all Federal and state stamp,  original issue or similar
taxes (but  specifically not including any income taxes) which may be payable in
respect of the issue of any Option Shares or certificates therefor.

     SECTION 11. Notices. All notices hereunder shall be in writing and shall be
given: if to the Company,  at One Ram Ridge Road, Spring Valley,  New York 10977
(attention:  Kenneth I.  Sawyer),  fax number:  (914)  425-5097,  with a copy to
Hertzog,  Calamari  &  Gleason,  at 100 Park  Avenue,  New York,  New York 10017
(attention: Stephen Ollendorff, Esq., and Stephen R. Connoni, Esq.), fax number:
(212)  213-1199,  or if to the  Optionee,  at Genpharm  Inc.,  85 Advance  Road,
Etobicoke,  Ontario M8Z 2S9, Canada (attention:  [Chief Financial Officer]), fax
number: (416) 236-2940,  with a copy to Coudert Brothers,  at 1114 Avenue of the
Americas,  New York, New York 10036  (attention:  Edwin S.  Matthews,  Jr.), fax
number:  (212)  626-4120.  Any  notice  shall be deemed  to have  been  given if
personally  delivered or sent by express  commercial courier or delivery service
or by telegram,  telefax, telex or facsimile  transmission.  Any notice given in
any other manner shall be deemed given when actually received.

                                       5
<PAGE>

     SECTION 12.  Amendments;  Waiver.  This  Option may not be amended,  and no
provision hereof may be waived,  without the prior written consent of at least a
majority of the Company  Designees (as defined in the Stock Purchase  Agreement,
dated March 25, 1998, between the Company and Lipha Americas, Inc.) on behalf of
the Company and except pursuant to a written instrument  executed by the Company
and the Optionee.

     SECTION 13. Headings. The headings of the Sections of this Option have been
inserted for  convenience of reference only and shall not be deemed to be a part
of this Option.

     SECTION  14.  Governing  Law.  This  Option is issued  under,  and shall be
governed by and construed in accordance  with, the laws of the State of New York
applicable to contracts made and to be performed wholly within such State.

     IN WITNESS WHEREOF,  the Company has caused this Option to be signed on its
behalf, in its corporate name, by its duly authorized officer, on June 30, 1998.


                                PHARMACEUTICAL RESOURCES, INC.



                                By: /s/Kenneth I. Sawyer
                                   --------------------------------
                                    Kenneth I. Sawyer
                                    President


Attest:



/s/Dennis J. O'Connor
- ------------------------------
Dennis J. O'Connor
Secretary

                                GENPHARM, INC.


 
                                By:/s/J.N. Tabatznik
                                   ---------------------------------
                                   Name: J.N. Tabatznik
                                   Title: Chief Executive Officer


<PAGE>


                         PHARMACEUTICAL RESOURCES, INC.

                           STOCK OPTION EXERCISE FORM


         For services  performed,  the undersigned  hereby irrevocably elects to
exercise  the  attached  Option to  purchase  ______  shares of common  stock of
Pharmaceutical  Resources,  Inc. at the  Exercise  Price of $2.00 per share,  in
accordance with the Option Agreement.

         Attached  hereto is cash or a U.S.  certified  or  official  bank check
payable to the order of the  Company in the amount of the total  Exercise  Price
set forth above.


                                            -----------------------------------
                                            Name of Optionee



                                            -----------------------------------
                                            Signature of Optionee
                                            or Authorized Representative



                                            -----------------------------------
                                            Name and Title of Authorized
                                            Representative



                                            -----------------------------------
                                            Address of Optionee


                                            -----------------------------------
                                            Date


                                                                    Exhibit 10.7


     REGISTRATION RIGHTS AGREEMENT,  dated June 30, 1998, between PHARMACEUTICAL
RESOURCES, INC., a New Jersey corporation (the "Company"), Lipha Americas, Inc.,
a Delaware corporation ("Lipha") Merck KGaA, a Kommanditgesellschaft  auf Aktien
organized under the laws of Germany ("Merck"), and Genpharm, Inc., a corporation
organized  and  existing  under  the laws of the  Province  of  Ontario,  Canada
("Genpharm", together with Merck and Lipha, the "Holders" and each a "Holder").

     WHEREAS,  Lipha  concurrently  herewith is purchasing  10,400,000 shares of
common stock, par value $.01 per share, of the Company ("Common Stock") pursuant
to a Stock Purchase Agreement, dated March 25, 1998, between the Company and the
Holder (the "Stock Purchase Agreement");

     WHEREAS,  Lipha  concurrently  herewith is purchasing  2,313,000  shares of
Common Stock owned by Clal Pharmaceutical  Industries Ltd., pursuant to the Clal
Stock  Purchase  Agreement  (as  such  term is  defined  in the  Stock  Purchase
Agreement);
 
     WHEREAS,  the Holders  may  purchase an  aggregate  of up to an  additional
1,171,040  shares of Common Stock upon exercise of the separate Options (as such
term is defined in the Stock Purchase Agreement); and

     WHEREAS,  the Stock  Purchase  Agreement  provides  that the  execution and
delivery  of  this  Agreement  is  a  condition   precedent  to  the  respective
obligations of the Company and Lipha to consummate the transactions contemplated
by such Stock Purchase Agreement.

     NOW,  THEREFORE,  in  consideration  of the  premises  and  of  the  mutual
agreements set forth herein, the parties hereto agree as follows:

     SECTION 1. DEMAND REGISTRATIONS.

     1.1 The Company  agrees that,  commencing  on the date nine (9) months from
the date  hereof,  upon  receiving a written  request (the  "Request")  from any
Holder to register under the Securities Act of 1933, as amended (the "Securities
Act"), and under the securities laws of a reasonable  number of states specified
by the Holder in the Request (the  "Specified  States"),  a specified  number of
shares of Subject Stock (as hereinafter  defined),  which number may be all or a
material part of the Subject Stock then owned by the Holders, the Company shall,
as soon  thereafter  as  practicable,  file  with the  Securities  and  Exchange
Commission (the "Commission") on the appropriate form a registration  statement,
together with any requisite  registration  statements or applications  under the
securities  laws of the  Specified  States,  covering  the  number  of shares of
Subject Stock  specified in the Request.  The Company,  under no  circumstances,

<PAGE>

shall be required to make more than three  effective  filings of a  registration
statement under this Section 1; provided,  however, that beginning at such time,
if ever, as any Holder shall exercise the Options, in whole or in material part,
the Company shall be obligated to effect two additional  registrations  pursuant
to this  Section 1  following  any  Holder's  delivery  of a Request;  provided,
further,  that the Holders may not deliver more than one Request in total during
any  12-month  period.  For the  purpose  of the  preceding  sentence,  Requests
delivered  at the same time by the  Holders  together  shall be  counted  as one
Request.  The Company may, in its sole discretion,  include additional issued or
unissued shares of Common Stock in such registration  statement;  provided, that
the  inclusion  of any such  shares  shall not  reduce  the  number of shares of
Subject Stock  contained in the Request  which are covered by such  registration
statement.

     1.2 The term  "Subject  Stock",  as used  herein,  shall mean the number of
shares of Common Stock owned by the Holders  which shall have been  purchased by
any Holder (a) under the Stock  Purchase  Agreement at the Closing (as such term
is defined therein), (b) under the Clal Stock Purchase Agreement or (c) upon any
exercise  of  the  Options.  "Registration  statement"  means  all  registration
statements,  including all prospectuses  contained therein and all amendments or
supplements  thereto, or any related applications filed under the Securities Act
or under the securities laws of the applicable states.

     1.3 The  Company  shall  use  its  best  efforts  to  cause a  registration
statement  including the shares of Subject Stock to become  effective  under the
Securities  Act and, if necessary,  under the  securities  laws of the Specified
States.  The  Company  shall  further  use its  best  efforts  to  maintain  the
effectiveness  of  such  registration  statement  for  such  period  as  may  be
reasonably  necessary to complete the  distribution of the Subject Stock covered
thereby, subject to the limitations set forth in Sections 3 and 4 hereof.

     1.4 If the method of  disposition  requested  by a Holder  pursuant to this
Section 1 shall be an underwritten  public offering,  such Holder shall have the
right to designate the underwriter of such offering. Any underwriter selected by
such Holder  shall be subject to the  approval of the  Company,  which  approval
shall not be unreasonably  withheld (the  "Underwriter").  The Company will join
the Holders in entering into an  underwriting  agreement and related  agreements
with  the  Underwriter,   which  shall  be  in  form  and  substance  reasonably
satisfactory  to the  Company  and its  counsel  and  shall  contain  terms  and
provisions customarily contained in the underwriting agreements utilized by such
Underwriter  in  connection  with  comparable  public  offerings,  including  an
indemnification of the Underwriter by the Company and the Holders.

     1.5 All expenses,  disbursements,  fees (filing fees and others), legal and
accounting expenses,  and other costs of every kind and nature incurred or borne
by the Company and the Holders in connection with a registration requested under
this Section 1 (both under the Securities  Act and under the securities  laws of
the Specified States) shall be paid and/or reimbursed by the Holders;  provided,
however,  that if the Company  shall  include any shares of Common  Stock in any

                                       2
<PAGE>

such registration,  then the Company shall reimburse the Holders, within 10 days
following the Holders'  written request,  for all such expenses,  disbursements,
fees and other costs using the ratio of net cash received by the Company and any
other sellers of shares of Common Stock under such registration statement to the
total amount of net cash  received by the Holders  unless the Holders shall have
otherwise agreed to bear such expenses,  disbursements,  fees and other costs on
behalf of any other  stockholder  of the Holders for whom shares of Common Stock
are being included in such registration.

     SECTION 2. PIGGYBACK REGISTRATIONS.

     2.1 The Company agrees that, on each occasion that it shall propose to file
a registration  statement  covering  shares of Common Stock,  whether on its own
behalf or at the request of any other  stockholder  of the Company (other than a
registration  statement on Form S-4 or Form S-8 under the Securities  Act), with
the  Commission or under the laws of any state  jurisdiction,  the Company shall
give written notice ("Piggyback  Notice") of such proposed filing to the Holders
at least 40 days prior to such filing.  Upon the written  request of any Holder,
given within 10 days after the date of the Piggyback  Notice,  the Company shall
use its best  efforts  to include in any such  filing  such  number of shares of
Subject Stock that shall be requested by the Holders, subject to any limitations
as to the number of shares of Subject Stock that may be imposed by the Company's
underwriter (if any); provided,  however, that if such registration statement is
being  filed at the  request of another  stockholder  of the  Company,  then the
maximum number of shares of Subject Stock included in such registration shall be
equal to the lesser of (a) the aggregate number of shares of the Common Stock to
be included in such  registration  multiplied  by a fraction,  the  numerator of
which shall be the number of shares of Common  Stock owned by the Holders on the
date of the Piggyback Notice and the denominator of which shall be the aggregate
number of shares of Common Stock that are issued and  outstanding  on such date,
or (b) the number of shares of the  Common  Stock  that the  Holders  shall have
requested to have included in such registration.

     2.2 The  Company  agrees  that it shall use its best  efforts  to cause the
registration statement including the shares of Subject Stock to become effective
under the Securities Act and under the securities laws of Specified States.  The
Company shall further use its best efforts to maintain the effectiveness of such
registration  statement  for  such  period  as may be  reasonably  necessary  to
complete the distribution of the Subject Stock covered  thereby,  subject to the
limitations set forth in Section 4 hereof.

     2.3 The  Holders  shall  pay all  fees  and  expenses  of its  counsel  and
accountants who shall not also be representing the Company,  and shall reimburse
the Company for certain additional expenses incurred by the Company as set forth
in this Section 2.3. The Company  shall pay all  expenses,  disbursements,  fees
(filing  and  others),  legal and  accounting  and other costs of every kind and
nature  incurred or borne by the Company in connection  with such a registration
requested under this Section 2 (both under the Securities Act and under the laws

                                       3
<PAGE>

of the  Specified  States in which shares of the Subject  Stock are being sold),
except  that the  Holders  shall  promptly  reimburse  the  Company for all such
expenses,  disbursements,  fees and  other  costs  using  the  ratio of net cash
received by the Holders to the total amount of net cash  received by the Company
and any  other  sellers  of  shares  of Common  Stock  under  such  registration
statement  unless the Company shall have otherwise agreed to bear such expenses,
disbursements,  fees and other costs on behalf of any other  stockholder  of the
Company for whom shares of Common Stock are being included in such registration.

     SECTION 3. HOLDBACK AGREEMENT; LIMITATION ON RESALES. If the Company at any
time shall register  shares of Common Stock under the Securities Act for sale to
the public, neither Holder shall sell publicly, make any short sale of, or grant
any option for the  purchase of, or  otherwise  dispose  publicly of, any of the
shares of Subject  Stock (other than Subject  Stock  included in a  registration
statement pursuant to Sections 1 or 2 hereof), without the prior written consent
of the  Company,  for a period  designated  by the  Company  in  writing  to the
Holders,  which  period  shall  begin not more  than ten (10) days  prior to the
effectiveness  of the  registration  statement  pursuant  to which  such  public
offering shall be made and shall terminate at such time as similar  restrictions
imposed by law and/or Company policy on directors and executive  officers of the
Company generally shall terminate;  provided,  however, that, in no event, shall
such  restrictions  last more than 180 days  after  the  effective  date of such
registration statement.


     SECTION 4.  PREPARATION AND FILING.  Whenever the Company shall be under an
obligation  pursuant  to this  Agreement  to use its best  efforts to effect the
registration  of the shares of Subject Stock,  the Company and the Holders agree
as follows:

          (a)  The  Company  shall,  in no  event,  be  required  to  keep  such
     registration effective for longer than nine months after the effective date
     thereof or during  any period in which the  trading of any shares of Common
     Stock shall be suspended for any reason by the Commission.

          (b) The  Company  shall use its best  efforts  to cause all  shares of
     Subject  Stock  registered  pursuant to Sections 1 or 2 hereof to be listed
     for trading on each securities exchange or other securities market on which
     the Common Stock shall then be listed.

          (c) The Company may require each Holder to promptly furnish in writing
     to the Company such information  regarding such Holder, the distribution of
     the shares of Subject Stock as the Company may from time to time reasonably
     request and such other information as may be legally required in connection
     with such registration.

                                       4

<PAGE>

          (d) The Company shall supply the Holders with such number of copies of
     registration  statements,  and amendments and supplements  thereto, and any
     prospectus relating thereto as may be reasonably  requested by the Holders,
     and will  supply  the  Holders  with  copies of any  preliminary  and final
     prospectus  filed in connection  therewith that may be reasonably  required
     and, if necessary,  with copies of a prospectus meeting the requirements of
     Section  10(a)(3) of the Securities Act;  provided,  however,  that no such
     prospectus  need be supplied more than nine months after the effective date
     of any such registration statement.

          (e)  The  Company  shall  not  be  required  in  connection  with  any
     qualification  of the shares of Subject  Stock to be sold  within any state
     jurisdiction  to qualify to do  business  as a foreign  corporation  in any
     state,  to  execute a general  consent  to service of process or to subject
     itself to taxation,  registration as a broker-dealer or to any unreasonable
     regulatory  requirements  or unreasonable  expenses,  but shall execute and
     deliver  consents  to  service of  process  in the  Specified  States as to
     matters relating to the sale of the shares of Subject Stock in such States.

          (f) The Company  shall  promptly  notify the Holders of any stop order
     issued or threatened by the  Commission or any state  regulatory  authority
     with respect to any registration  statement  covering the shares of Subject
     Stock and shall take all reasonable  actions  required to prevent the entry
     of such stop order or to remove it if entered.

          (g) Each of the  Company  and each Holder  shall  promptly  notify the
     other party of the  occurrence  of any event which shall require the filing
     of an amendment or supplement to any registration  statement and prospectus
     covering the shares of Subject  Stock.  Upon  receipt of such notice,  each
     party shall refrain from the sale of any shares of Subject  Stock  pursuant
     to such  registration  statement and  prospectus  until the receipt by such
     party of copies of the supplemented or amended  registration  statement and
     prospectus.

     SECTION 5. INFORMATION.  Each Holder agrees that, promptly upon the request
of the  Company,  it shall  furnish to the Company  such  information  regarding
itself  and  its  Affiliates,  as such  term is  defined  in Rule  12b-2  of the
Securities Exchange Act of 1934 (the "Exchange Act"), and its holdings of shares
of the Subject  Stock as the Company  shall specify in such request and as shall
be  required  in  connection  with any  registration  statement,  proxy or other
reporting  requirements of the Company.  Each Holder further agrees to cooperate
with  the  Company  in any way  reasonably  necessary  to  accomplish  any  such
registration  hereunder and, when  participating  in any such  registration,  to
comply with all of the  requirements  of the  Securities  Act and the securities
laws of the  states  in which  the  shares of  Subject  Stock  are  being  sold,
including delivery by the Holder to any purchaser of the shares of Subject Stock
of a copy of any required  prospectus.  Notwithstanding  anything  herein to the

                                       5
<PAGE>

contrary,  each Holder  further  agrees that it shall  indemnify the Company and
hold it harmless from and against,  and pay or reimburse it for, any  liability,
loss, cost or damage,  including  attorneys' fees,  incurred by the Company as a
result  of any  failure  on such  Holder's  part  to  carry  out  the  foregoing
agreement.


     SECTION 6. INDEMNIFICATION.

     6.1 INDEMNITORS;  INDEMNIFIED PERSONS. For purposes of this Section 6, each
party which, pursuant to this Section 6, agrees to indemnify any other person or
entity shall be referred to, as applicable,  as the "Indemnitor" with respect to
such person or entity,  and each such person or entity who is indemnified  shall
be referred to as the "Indemnified Person" with respect to such Indemnitor.

     6.2 COMPANY  INDEMNITY.  The Company  hereby  agrees to indemnify  and hold
harmless  each Holder,  and their  respective  directors,  officers,  employees,
agents  and  controlling  persons  (within  the  meaning  of  Section  15 of the
Securities Act or Section 20(a) of the Exchange  Act),  from and against any and
all claims,  liabilities,  losses,  damages and expenses  (including  reasonable
attorneys'  fees and  disbursements)  asserted  against or  incurred by any such
Indemnified  Person which shall be caused by any untrue  statement of a material
fact  contained  in any  registration  statement or  prospectus  relating to the
Subject Stock, including any amendment or supplement thereto, or shall be caused
by any omission to state therein a material  fact required to be stated  therein
or necessary to make the statements  therein not  misleading,  except insofar as
such losses,  claims,  damages,  liabilities and expenses shall be caused by any
untrue statement or omission based upon information  furnished in writing to the
Company  by  such  Holder  or  on  such   Holder's   behalf  for  use   therein.
Notwithstanding  anything to the contrary contained herein, the  indemnification
agreement  contained  in this  Section 6.2 shall not inure to the benefit of any
Indemnified  Person  from whom a person or entity  asserting  a claim  purchased
shares if an untrue  statement  or omission of material  fact in any  prospectus
shall have been  corrected  by the  Company on a timely  basis,  such  person or
entity shall have failed to utilize such corrected prospectus and such corrected
prospectus would have cured the defect giving rise to such claim.

     6.3 HOLDER  INDEMNITY.  Each Holder  hereby  agrees to  indemnify  and hold
harmless each of the Company, and its directors, officers, employees, agents and
controlling  persons  (within the meaning of Section 15 of the Securities Act or
Section  20(a) of the  Exchange  Act),  from  and  against  any and all  claims,
liabilities,  losses, damages and expenses (including reasonable attorneys' fees
and  disbursements)  asserted against or incurred by any such Indemnified Person
to the same extent as the foregoing  indemnity  from the Company to the Holders,
but only with  respect to  information  relating  to such  Holder  furnished  in
writing by such Holder or on such  Holder's  behalf for use in any  registration
statement  or  prospectus  relating to the  Subject  Stock or any  amendment  or
supplement  thereto.  The total amount  payable by such Holder  pursuant to this
Section 6.3 shall not exceed an amount equal to the number of shares proposed to
be sold by such Holder in the  registered  offering  that shall give rise to any
such claim for indemnity multiplied by the selling price per share.

                                       6

<PAGE>

     6.4 Defense.  Promptly after receipt by an Indemnified  Person of notice of
any claim or demand or the commencement of any action or proceeding with respect
to which indemnification may be sought hereunder,  such Indemnified Person shall
notify the Indemnitor of such claim or demand or the commencement of such action
or  proceeding,  but failure so to notify the  Indemnitor  shall not relieve the
Indemnitor  from any  liability  which  the  Indemnitor  may have  hereunder  or
otherwise,  unless the Indemnitor shall be actually  prejudiced by such failure.
If the Indemnitor  shall so elect,  the  Indemnitor  shall assume the defense of
such claim,  demand,  action or proceeding,  including the employment of counsel
reasonably  satisfactory to such Indemnified  Person, and shall pay the fees and
disbursements  of such counsel.  In the event,  however,  that such  Indemnified
Person shall reasonably  determine that having common counsel would present such
counsel with a conflict of interest or  alternative  defenses shall be available
to an Indemnified  Person or if the Indemnitor  shall fail to assume the defense
of the  claim,  demand,  action  or  proceeding  in a timely  manner,  then such
Indemnified  Person may employ  separate  counsel to  represent  or defend  such
Person against any such claim,  demand,  action or proceeding and the Indemnitor
shall pay the  reasonable  fees and  disbursements  of such  counsel;  provided,
however,  that  the  Indemnitor  shall  not be  required  to pay  the  fees  and
disbursements of more than one separate  counsel for all Indemnified  Persons in
any  jurisdiction in any single or related action or proceeding.  For any claim,
demand,  action or proceeding the defense of which the Indemnitor  shall assume,
the Indemnified Person shall have the right to participate therein and to retain
its own counsel at such  Indemnified  Person's own expense  (except as otherwise
specifically  provided in this Section 6.4), so long as such participation shall
not interfere with the  Indemnitor's  control of such claim,  demand,  action or
proceeding.  The Indemnitor  shall not, without the prior written consent of the
Indemnified Person, settle or compromise or consent to the entry of any judgment
in any pending or  threatened  claim,  action,  suit or proceeding in respect of
which indemnification may be sought hereunder unless such settlement, compromise
or consent shall include an  unconditional  release of such  Indemnified  Person
from all liability arising out of such claim, demand, action or proceeding.

     6.5 Contribution. If the indemnification in this Section 6 shall be held by
a court of competent  jurisdiction  to be unavailable  to an Indemnified  Person
with  respect to any claim,  liability,  loss,  damage or  expense  referred  to
herein,  then the Indemnitor  shall contribute to the amounts paid or payable by
such Indemnified  Person as a result of such claim,  liability,  loss, damage or
expense in such  proportion as is appropriate  to reflect the relative  benefits
and  also  the  relative  fault  of the  Indemnitor,  on the one  hand,  and the
Indemnified Party, on the other, in connection with the transactions giving rise
to such claim, liability, loss, damage or expense, as well as any other relevant
equitable  considerations.  The relative benefits received by the Indemnitor, on
the one hand, and the Indemnified  Party, on the other, shall be deemed to be in

                                       7
<PAGE>

the same  proportion  as the total net  proceeds  from the sale of Common  Stock
under the  registration  statement or  prospectus  (before  deducting  expenses)
received by the  Indemnitor  shall bear to the total net proceeds from such sale
received by the Indemnified  Person. The relative fault of the Indemnitor and of
the Indemnified  Person shall be determined by reference to, among other things,
whether  the untrue  statement  of a material  fact or the  omission  to state a
material fact shall relate to  information  supplied by the Indemnitor or by the
Indemnified  Person  and the  parties'  relative  intent,  knowledge,  access to
information  and  opportunity  to correct or prevent such statement or omission.
The  Company and each Holder  agree that it would not be just and  equitable  if
contribution  were  determined by any other method of allocation  which does not
take account of the equitable considerations referred to above.  Notwithstanding
the foregoing, (a) the total amount payable by a Holder pursuant to this Section
6.5 shall not exceed an amount equal to the number of shares sold by such Holder
in the  registered  offering  that give rise to any such claim for  contribution
multiplied  by the selling price per share and (b) no person or entity guilty of
or liable for fraudulent  misrepresentation (within the meaning of Section 11(f)
of the  Securities  Act) will be  entitled  to  contribution  from any person or
entity who was not guilty of fraudulent misrepresentation.

     6.6 HOLDER-RELATED  CLAIMS. If there shall be any claim for indemnification
by or against any Holder or any of its related persons under this Section 6, all
determinations by the Company relating thereto,  including,  without limitation,
the choice and  engagement  of counsel,  the  prosecution  of any action and the
terms and conditions of any  settlement or  compromise,  shall be made solely by
the "Company Designees" (as defined in the Stock Purchase Agreement) by majority
vote thereof.

     SECTION 7.  TERMINATION.  This Agreement  shall  terminate upon the sale or
disposition of beneficial  ownership by the Holders of all shares of the Subject
Stock;  provided,  however,  this  Agreement  shall continue in effect as to any
indemnification and payment or reimbursement obligations herein.

     SECTION 8. MISCELLANEOUS.

     8.1 ASSIGNMENT. All terms and provisions of this Agreement shall be binding
upon and  inure to the  benefit  of the  parties  hereto  and  their  respective
successors  and  permitted  assigns,  but neither this  Agreement nor any of the
rights,  interests or obligations  hereunder may be assigned or delegated by any
party hereto without the prior written consent of the other party.

     8.2 ENTIRE AGREEMENT.  This Agreement and the other agreements  referred to
herein or  delivered  pursuant  hereto  contain the entire  agreement  among the
parties  with  respect to the  subject  matter  hereof and  supersede  all prior
arrangements or understandings with respect thereto.

                                       8
<PAGE>

     8.3 NOTICES.  All notices hereunder shall be in writing and shall be given:
(a) if to the  Company,  at One Ram Ridge Road,  Spring  Valley,  New York 10977
(attention:  Kenneth I.  Sawyer),  fax  number:  (914)  425-5097,  or such other
address or fax number as the  Company  shall have  designated  in writing to the
Holders in accordance with this Section 8.3, with a copy to Hertzog,  Calamari &
Gleason,  100 Park  Avenue,  New York,  New York  10017  (attention:  Stephen A.
Ollendorff,  Esq. and Stephen R. Connoni, Esq.), fax number: (212) 213-1199, (b)
if to Merck, at Frankfurter  Strasse 250, 64271 Darmstadt,  Germany  (attention:
Dr.  Rudi  Neirinckx),  fax  number:  011 49 6151 72 3435 with a copy to Coudert
Brothers, 1114 Avenue of the Americas, New York, New York 10036-7703 (attention:
Edwin S. Matthews,  Jr., Esq.), fax number: (212) 626-4120,  (c) if to Genpharm,
at 85  Advance  Road,  Etobicoke,  Ontario  M8Z 2S9,  Canada  (attention:  Chief
Financial Officer), fax number: (416) 236-2940, with a copy to Coudert Brothers,
at 1114 Avenue of the Americas,  New York, New York 10036  (attention:  Edwin S.
Matthews,  Jr., Esq.), fax number:  (212) 626-4120,  or (d) if to Lipha, at [ ],
with a copy to Coudert Brothers,  at 1114 Avenue of the Americas,  New York, New
York 10036 (attention: Edwin S. Matthews, Jr., Esq.), fax number: (212) 626-4120
or such other  address(es) or fax number(s) as a Holder shall have designated in
writing to the Company in accordance  with this Section 8.3. Any notice shall be
deemed to have been given if personally  delivered or sent by express commercial
courier  or  delivery  service  or by  telegram,  telefax,  telex  or  facsimile
transmission.  Any notice  given in any other  manner shall be deemed given when
actually received.

     8.4  AMENDMENTS;  WAIVER.  This Agreement may not be amended or terminated,
and no provision  hereof may be waived,  without the prior written consent of at
least a majority of the Company  Designees (on behalf of the Company) and except
pursuant to a written instrument  executed by the Company and the Holders.  Each
Holder  shall not  cause,  and shall use its best  efforts  not to  permit,  the
Company to agree to any amendment,  modification or waiver or take any action in
respect of this  Agreement,  including,  without  limitation,  in respect of any
agreement  or  settlement  relating  to a dispute  or claim for  indemnification
hereunder,  without  the prior  written  consent of at least a  majority  of the
Company  Designees,  as such term is  defined  in the Stock  Purchase  Agreement
(including any  replacement(s)  therefor as provided in Section 8.1 of the Stock
Purchase Agreement).

     8.5  COUNTERPARTS.  This  Agreement  may  be  executed  in  any  number  of
counterparts,  and each  such  counterpart  shall be  deemed  to be an  original
instrument,  but  all  such  counterparts  together  shall  constitute  but  one
agreement.

     8.6  HEADINGS.  The  headings of the Sections of this  Agreement  have been
inserted for  convenience of reference only and shall not be deemed to be a part
of this Agreement.

                                       9
<PAGE>

     8.7  GOVERNING  LAW. This  Agreement  shall be governed by and construed in
accordance  with the laws of the State of New York  applicable to contracts made
and to be performed wholly therein.

     8.8  SEVERABILITY.  If any term or  provision  hereof  shall be  invalid or
unenforceable,   (i) the   remaining  terms  and  provisions   hereof  shall  be
unimpaired,  (ii) any such invalidity or  unenforceability  in any  jurisdiction
shall  not  invalidate  or  render  unenforceable  such  provision  in any other
jurisdiction and (iii) the  invalid or unenforceable  term or provision shall be
deemed  replaced by a term or provision as determined by a court to be valid and
enforceable  and to express,  to the fullest  extent  legally  permissible,  the
intention of the parties with  respect to the invalid or  unenforceable  term or
provision.

     8.9 EXPENSES.  Except as otherwise specifically provided in this Agreement,
the parties shall bear their own respective expenses (including, but not limited
to,  all fees and  expenses  of  counsel,  financial  advisers  and  independent
accountants)  incurred  in  connection  with the  preparation,  negotiation  and
execution  of  this  Agreement  and  the   consummation   of  the   transactions
contemplated  hereby. To the extent that a Company Designee shall be required to
make  any  determination  or  take  any  action  hereunder  (including,  without
limitation,  with respect to indemnification  under Section 6 hereof) in his/her
capacity as a Company Designee,  the Holders shall cause the Company to, and the
Company shall, promptly reimburse and/or pay any reasonable expenses incurred by
the Company  Designee in acting in such  capacity.  The  Company  Designees  are
intended third-party beneficiaries of this provision.

                                       10

<PAGE>

     IN WITNESS  WHEREOF,  each of the undersigned has caused this  Registration
Rights Agreement to be executed as of the date first written above.

                                             PHARMACEUTICAL RESOURCES, INC.




                                             By:  /s/  Kenneth I.  Sawyer 
                                                --------------------------------
                                                Name: Kenneth  I.  Sawyer  
                                                Title:   Chief Executive Officer
                                                          & Chairman


                                             LIPHA AMERICAS, INC.




                                             By: /s/ Edwin S. Matthews
                                                --------------------------------
                                                Name:  Edwin S. Matthews
                                                Title:  Asst. Secretary


                                             MERCK KGaA




                                             By: /s/ Bernhard Scheuble
                                                --------------------------------
                                                Name:  Bernhard Scheuble
                                                Title:  Chief Executive Officer
                                                          Pharma



                                             GENPHARM, INC.




                                             By: /s/ J.N. Tabatznik 
                                                --------------------------------
                                                Name:  J.N. Tabatznik
                                                Title:  Chairman

                                       11



                                                                    Exhibit 10.8

                         PHARMACEUTICAL RESOURCES, INC.
                                  One Ram Ridge
                          Spring Valley, New York 10977


                                                            CONFIDENTIAL

                                                            March 25, 1998


Clal Pharmaceutical Industries Ltd.                   Merck KGaA
Clal House                                            Frankfurter Strasse 250
5, Druyanov Street                                    64271 Darmstadt Germany
Tel Aviv 63143
ISRAEL


Gentlemen:

     This  letter  agreement  sets  forth our  agreement  regarding  a  possible
transaction involving the purchase of shares of common stock, par value $.01 per
share (the "Common Stock"),  of Pharmaceutical  Resources,  Inc. (the "Company")
owned  by Clal  Pharmaceutical  Industries  Ltd.  ("Clal").  The  Company  is in
confidential  negotiations  regarding  a possible  investment  in the Company by
Merck  KGaA  or one of its  affiliates  (collectively,  "Merck").  No  agreement
between the Company and Merck has been reached. with respect to such transaction
(the "Merck Transaction").

     In connection  with the possible  investment  in the Company by Merck,  the
Company, Merck and Clal agree as follows:

1.  Concurrently  with,  and  subject  to, the closing  (the  "Closing")  of the
transactions  contemplated by a definitive  stock purchase  agreement  presently
being  discussed to be entered  into between the Company and Merck  regarding an
investment by Merck in the Company (the "Purchase Agreement"):

     (a) Clal shall sell to Merck, and Merck shall purchase from Clal, 1,313,272
     shares of Common  Stock (the  "Tranche A Shares").  The per share  purchase
     price for the  Tranche A Shares,  which  shall be payable  at the  Closing,
     shall be the greater of (i) $2.00 and (ii) the per share  purchase price to
     be paid by  Merck to the  Company  for the  shares  of  Common  Stock to be
     acquired  by Merck at the  Closing  (such  greater  price  being the "Merck
     Purchase Price").


<PAGE>

     (b) Clal shall sell to Merck,  and Merck shall  purchase  from Clal, at the
     Closing,  500,000  additional  shares  of  Common  Stock  (the  "Tranche  B
     Shares").  The per share  purchase  price for the  Tranche B Shares,  which
     shall be payable at the Closing,  shall be the Merck Purchase Price. On the
     second  anniversary  of the  Closing,  Merck shall pay to Clal an amount in
     respect of each  Tranche B Share  equal to the  excess,  if any, of (i) the
     weighted  average  price of all trades in the shares of Common Stock on The
     New York Stock  Exchange  ("Fair  Market  Value")  during  the thirty  (30)
     trading days  immediately  preceding the second  anniversary of the date of
     the Closing over (ii) the Merck Purchase Price.

     (c) All payments to Clal  pursuant to Paragraphs 1 and 2 hereof shall be by
     wire transfer of  immediately  available  funds or by certified or official
     bank check.

     (d) Merck hereby acknowledges that (i) all shares of Common Stock purchased
     by Merck from Clal will be purchased for investment purposes only without a
     view to the  resale  or  distribution  thereof  and may  not be  resold  or
     transferred  other than in compliance  with all applicable  securities laws
     and (ii) in connection  with such  purchase,  Clal is, subject to Paragraph
     2(a)  hereof,  making  no  representations  or  warranties  of  any  nature
     whatsoever  other than that Clal is conveying to Merck good and  marketable
     title to such shares which shall be duly authorized,  validly issued, fully
     paid and  nonassessable,  free  and  clear of any  liens,  claims  or other
     encumbrances,   and  that  such  conveyance  will  not  conflict  with  any
     agreement, law or obligation applicable to Clal.

2.   (a)  Subject to  Paragraph  7 below,  during the period  commencing  on the
     Closing and ending three years and five U.S.  business days thereafter (the
     "Post-Closing  Period"),  Clal shall not,  directly  or  indirectly,  sell,
     assign,  pledge,  transfer,  create or purchase any option or warrant on or
     with respect to, enter into any transaction  shifting a substantial portion
     of the  benefits  and  burdens of  ownership  of, or  otherwise  dispose of
     (collectively,  "Transfer"), or enter into a contract or agreement (whether
     or not contingent) to Transfer, any of the remaining shares of Common Stock
     beneficially  owned  by  Clal  (the  "Tranche  C  Shares").   Clal  further
     represents and warrants that immediately  following the Closing,  Clal will
     beneficially  own 500,000  shares of Common Stock,  all of which shares are

                                       2
<PAGE>

     subject to the put and call  options  described in  Paragraphs  2(b)(i) and
     (ii) below. These 500,000 shares of Common Stock will represent Clal's then
     entire  remaining  equity  interest in the Company,  including  the 186,000
     shares of Common Stock delivered to Clal pursuant to the Third Amendment to
     the Stock  Purchase  Agreement,  dated July 28, 1997,  between the Company,
     Clal  and  PRI-Research,  Inc.,  and  Clal  represents  that  it  holds  no
     unexercised  options,  warrants or other  rights with respect to any Common
     Stock as of the date hereof.

     (b)(i) During the five U.S.  business day period commencing on the last day
     of the  Post-Closing  Period,  Clal shall have the right to cause Merck (or
     the Company,  if Merck and the Company  shall  agree) to purchase,  and, if
     Clal so elects,  Merck  and/or the Company  shall  purchase,  the Tranche C
     Shares at a price of $2.50 per share.

     (ii) In the event that Clal shall not have  exercised the right provided in
     Paragraph  2(b)(i)  hereof,  Clal,  Merck and/or the Company shall have the
     right to exercise the option provided in this Paragraph  2(b)(ii),  in each
     case by  providing  written  notice of such  exercise  to each of the other
     parties  hereto within five U.S.  business days following the expiration of
     the five U.S.  business day period  referred to in Paragraph 2(b) (i). Upon
     the exercise of such option:

     (A) Clal shall  seek to sell any or all of the  Tranche C Shares on The New
     York Stock  Exchange for a period of ninety  trading days  beginning on the
     third trading day following exercise of the option; provided, however, that
     Clal shall not effect any such sale without the prior  consent of Merck and
     the Company,  and Clal shall use its best efforts to effect each sale which
     Merck and the Company shall direct Clal to effect; and

     (B) within five U.S.  business  days  following  the  expiration  of the 90
     trading  day period  referred  to above,  Merck  and/or the  Company  shall
     purchase from Clal all of the Tranche C Shares not sold by Clal during such
     90 trading  day period (if any),  and shall pay to Clal an amount  equal to
     the amount,  if any, by which (I) the product of 500,000  multiplied by the
     Fair Market Value during the 30 trading days immediately preceding the last
     day of the Post-Closing Period exceeds (II) the aggregate proceeds realized
     by Clal from  sales of Tranche C Shares  during  the 90 trading  day period
     referred to herein.

                                       3
<PAGE>

3. All shares of Common Stock sold by Clal pursuant to this  agreement  shall be
duly authorized,  validly issued, fully paid and nonassessable and shall be free
and clear  from all  liens,  pledges,  claims  and other  agreements,  including
warrants, options and voting agreements.

4. Except as otherwise  contemplated  in Paragraph 1 hereof,  and in addition to
the  restrictions  set forth in  Paragraph  2(a)  hereof,  from the date  hereof
through  the  occurrence  of the first to occur of (i) the  termination  of this
agreement  in  accordance  with  Paragraph  7  hereof  and  (ii)  the end of the
Post-Closing Period, neither Clal nor any person under Clal's control, shall (w)
purchase or otherwise  acquire any additional  shares of Common Stock,  options,
warrants or other  securities of the Company,  (x) Transfer any shares of Common
Stock beneficially  owned,  directly or indirectly,  by Clal, (y) enter into any
agreement  or  arrangement  with any person or entity  (other than the  Company)
concerning the voting,  holding or transferring of any shares of the Company, or
initiate, propose or participate in any transaction involving the Company or (z)
recommend any person to engage in the activities in (w), (x) or (y) above.

5. Effective upon the Closing:  (i) the Stock  Purchase  Agreement,  between the
Company and Clal, dated March 25, 1995, as amended (the "Clal Agreement"), shall
be terminated in its entirety with no further obligations, liabilities or rights
on the  part  of the  parties  thereunder,  and  (ii)  the  Registration  Rights
Agreement,  between the Company  and Clal,  dated May 1, 1995,  shall be amended
hereby and shall  provide that Clal shall not be entitled to exercise any of its
rights  thereunder  during  the  Post-Closing  Period.  Clal  hereby  agrees to,
notwithstanding any other agreement that it may have with the Company or others,
vote all shares of Common Stock which it owns (beneficially and/or of record) in
favor of the Merck  Transaction (and all related matters) if such Transaction is
approved  by the  Company's  Board of  Directors.  In the event of any  conflict
between the terms of this  agreement and the Clal  Agreement,  the terms of this
agreement shall govern.
 
6. The execution  and delivery of this  agreement  and the  consummation  of the
transactions   contemplated  hereby  shall  in  no  way  affect  or  modify  the
obligations of (i) P.R.I. Research, Inc. ("PRI Research") under the Non-Recourse
Promissory  Note,  dated July 28, 1997,  (ii) the Company,  PRI Research,  Clal,
C.T.P.  Research and  Development  (1995) Ltd.,  Clal  Pharmaceutical  Resources
(1995) Ltd. or Clal  Pharmaceutical  Resources L.P. under the letter  agreement,
dated July 28,  1997,  with respect to the purchase of interests by PRI Research
in the joint venture of the Company and Clal and any and all documents  executed
in connection therewith, or (iii) the transactions contemplated thereby.


                                       4
<PAGE>

7. Each of Clal,  the Company and Merck shall have the right to  terminate  this
agreement  without  further  obligation to any of the parties hereto (except for
Paragraphs 8, 9, 10 and 11 below) by written  notice to the other parties hereto
(i) after March 27, 1998, unless a definitive Purchase Agreement with respect to
the Merck Transaction has theretofore been executed by each party thereto,  (ii)
after July 15, 1998, unless the Closing has theretofore occurred and (iii) after
April 3, 1998,  unless the board of directors of Merck has theretofore  approved
the Purchase Agreement.

8. The Company,  Merck and Clal agree to keep strictly confidential the contents
of this agreement,  the fact that discussions between the Company and Merck have
occurred,  the terms of such discussions and all of the other matters  discussed
herein,  until after such time as the Company has  disclosed  such matters under
applicable  securities  laws or the  rules of the stock  exchanges  on which the
Common Stock is traded; provided,  however, that, notwithstanding the foregoing,
Clal may  disclose  such matters at such time,  and to such extent,  as required
under applicable securities laws.

9. All notices hereunder shall be in writing and shall be given:

         (a)      if to the Company,
 
                  One Ram Ridge Road
                  Spring Valley, New York 10977
                  Attention: Kenneth I.  Sawyer, President
                  Fax number: (914) 425-7922

                  with a copy to,

                  Hertzog, Calamari & Gleason
                  100 Park Avenue
                  New York, New York 10017
                  Attention: Stephen Ollendorff, Esq.
                           and Stephen R.  Connoni, Esq.
                  Fax number: (212) 213-1199

         (b)      if to Merck,
 
                  Frankfurter Strasse 250
                  64271 Darmstadt Germany
                  Attention: Dr.  Rudi Neirinckx
                  Fax number: (011 49) 6151 72 3435

                                       5
 
<PAGE>

                  with a copy to,

                  Coudert Brothers
                  1114 Avenue of the Americas
                  New York, New York 10036-7703
                  Attention: Edwin S.  Matthews, Jr.
                  Fax number: (212) 626-4120

         (c)      if to Clal,
 
                  Clal Pharmaceutical Industries Ltd.
                  Clal House
                  5 Druyanov Street
                  Tel Aviv 63143 Israel
                  Attention: Ken Lalo, General Counsel
                  Fax number:  011 972 3629 3633

                  With a copy to,

                  Weil, Gotshal & Manges LLP
                  767 Fifth Avenue
                  New York, New York 10153
                  Attention:  David P. Stone, Esq.
                  Fax number:  (212) 310 - 8007
 
Any notice shall be deemed to have been given,  if personally  delivered or sent
by express  commercial  courier or  delivery  service or by  telegram,  telefax,
telefax or facsimile transmission. Any notice given in any other manner shall be
deemed given when actually received.

10. This agreement shall be governed in accordance with the laws of the State of
New York, without regard to its conflicts of laws principles. For the purpose of
this letter agreement,  "U.S.  Business Day" shall mean any day except Saturday,
Sunday  and any  other  day on  which  commercial  banks  in New  York  City are
authorized by law to close.

                                       6

<PAGE>

11.  This  agreement  shall not be amended or  (subject  to  Paragraph  7 above)
terminated,  and no provision hereof may be waived, except pursuant to a written
instrument executed by each of the parties hereto.


                                                  Sincerely,

                                                  PHARMACEUTICAL RESOURCES, INC.


                                                   By: /s/ Kenneth I. Sawyer 
                                                      __________________________
                                                      Name:  Kenneth I. Sawyer

                                                      Title: President


ACCEPTED AND AGREED TO:

CLAL PHARMACEUTICAL INDUSTRIES LTD.


By: /s/ Ken Lalo
   --------------------------------
   Name:  Ken Lalo
   Title: General Counsel

DATED:  March 25, 1998


ACCEPTED AND AGREED TO:

MERCK KGaA



By: /s/ Rudi D. Neirinckx          
   --------------------------------
   Name:  Rudi D. Neirinckx
   Title: Head New Business, Merck KGaA

DATED: March 25, 1998
 
                                       7


                                                                    Exhibit 10.9


                         PHARMACEUTICAL RESOURCES, INC.
                        1997 DIRECTORS STOCK OPTION PLAN


                                   ARTICLE I

                                  DEFINITIONS


     As used herein, the following terms have the meanings hereinafter set forth
unless the context clearly indicates to the contrary:

     (a) "Board" shall mean the Board of Directors of the Company.

     (b) "Company" shall mean Pharmaceutical Resources, Inc.

     (c) "Date of Grant" shall mean, with respect to any Eligible Director:  (a)
the Effective Date with respect to those Options  granted on the Effective Date,
(b) the date  such  Eligible  Director  is  initially  elected  to the  Board of
Directors if such Eligible  Director was first elected after the Effective Date,
and (c) for each respective fiscal year of the Company  thereafter,  the date on
which the shareholders of the Company shall elect directors at an annual meeting
of shareholders or any adjournment thereof.

     (d)  "Effective  Date" shall mean October 28, 1997, the date of adoption by
the Board.

     (e) "Eligible  Director"  shall mean any Director of the Company who is not
an employee of the Company or its subsidiaries.

     (f) "Fair Market Value" on any day shall mean (a) if the  principal  market
for the Stock is The New York  Stock  Exchange,  any other  national  securities
exchange or The NASDAQ Stock Market,  the closing sales price regular way of the
Stock on such day as reported by such exchange or market,  or on a  consolidated
tape reflecting transactions on such exchange or market, or (b) if the principal
market for the Stock is not a national  securities  exchange and if there are no
closing prices reported on The NASDAQ Stock Market, the mean between the closing
bid and the  closing  asked  prices  for the Stock on such day as quoted on such
market,  or (c) if there are no such prices  quoted on The NASDAQ Stock  Market,
the price  furnished  by any New York  Stock  Exchange  member  selected  by the
Company from time to time for such  purpose;  provided  that if clauses (a), (b)
and (c) of this paragraph are all  inapplicable,  or if no trades have been made
or no quotes are  available  for such day,  the Fair  Market  Value of the Stock
shall be determined by the Board by any method which it deems, in good faith, to
be  appropriate.  The  determination  of the Board shall be conclusive as to the
Fair Market Value of the Stock.


<PAGE>

     (g)  "Option"  shall mean an Eligible  Director's  stock option to purchase
Stock granted pursuant to the provisions of Article V hereof.

     (h) "Optionee"  shall mean an Eligible  Director to whom an Option has been
granted hereunder.

     (i) "Option Price" shall mean the price at which an Optionee may purchase a
share of Stock under a Stock Option Agreement.

     (j) "Qualified Domestic Relations Order" shall have the meaning assigned to
such  term  under  the  Internal  Revenue  Code of  1986,  as  amended,  and the
regulations promulgated thereunder.

     (k)  "1997  Plan"  shall  mean  the  Pharmaceutical  Resources,  Inc.  1997
Directors Stock Option Plan, the terms of which are set forth herein, as amended
from time to time.

     (l)  "1989  Plan"  shall  mean  the  Pharmaceutical  Resources,  Inc.  1989
Directors' Stock Option Plan.

     (m)  "Sale"  shall  mean  any  single  transaction  or  series  of  related
transactions,  upon the consummation of the following  events:  (i) a definitive
agreement for the merger or other  business  combination  of the Company with or
into another  corporation  pursuant to which the  shareholders of the Company do
not own, immediately after the transaction, more than 50% of the voting power of
the  corporation  that survives and is a publicly  owned  corporation  and not a
subsidiary of another  corporation,  or (b) a definitive agreement for the sale,
exchange,  or other disposition of all or substantially all of the assets of the
Company (other than to any  wholly-owned  subsidiary of the Company);  provided,
that a Sale  shall  not  be  deemed  to  have  occurred  if  there  shall  be an
affirmative vote of a majority of the Board to suspend the provisions of Section
4.3 of the 1997 Plan with respect to any such event.

     (n) "Stock" shall mean the common stock,  par value $.01 per share,  of the
Company  or, in the event  that the  outstanding  shares of Stock are  hereafter
changed into or exchanged  for  different  stock or securities of the Company or
some other corporation, such other stock or securities.

     (o) "Stock Option  Agreement"  shall mean an agreement  between the Company
and the Optionee under which the Optionee may purchase Stock in accordance  with
the 1997 Plan.

                                       2

<PAGE>

                                   ARTICLE II

                                  THE 1997 PLAN

     2.1 Name. This 1997 Plan shall be known as the  "Pharmaceutical  Resources,
Inc. 1997 Directors Stock Option Plan."

     2.2  Purpose.  The purpose of the 1997 Plan is to advance the  interests of
the Company and its shareholders by affording  Eligible Directors of the Company
an opportunity to acquire,  maintain and increase their  ownership  interests in
the Company,  and thereby to encourage their continued  service as directors and
to provide them  additional  incentives to achieve the growth  objectives of the
Company.

     2.3  Effective  Date.  The  Effective  Date of the 1997 Plan is October 28,
1997. Any Options granted under the 1997 Plan shall only become effective if the
shareholders of the Company shall have, on or before October 27, 1998,  approved
and  adopted  the 1997  Plan.  If the 1997  Plan  shall not be so  approved  and
adopted, all Options granted hereunder shall be of no effect.

     2.4 Termination  Date. The 1997 Plan shall terminate and no further Options
shall be granted hereunder upon the tenth anniversary of the Effective Date.


                                   ARTICLE III

                                  PARTICIPANTS

     Each Eligible Director shall participate in the 1997 Plan, provided that he
is or was elected as a member of the Board at an annual meeting of shareholders,
or any  adjournment  thereof,  or was  elected by  Eligible  Directors  who were
elected as members of the Board at an annual meeting of  shareholders  to fill a
vacancy on the Board.


                                   ARTICLE IV

                      SHARES OF STOCK SUBJECT TO 1997 PLAN

     4.1  Limitations.  Subject to any antidilution  adjustment  pursuant to the
provisions  of Section 4.2 hereof,  the maximum  number of shares of Stock which
may be issued  and sold  hereunder  shall not  exceed  500,000  shares of Stock.
Shares of Stock  subject  to an Option  may be either  authorized  and  unissued
shares or shares issued and later  acquired by the Company;  provided,  however,
that the  shares of Stock with  respect  to which an Option  has been  exercised
shall  not again be  available  for the  grant of an  Option  hereunder.  If any
outstanding Options granted hereunder shall terminate or expire

                                       3
<PAGE>


for any reason  without  being wholly  exercised  prior to the end of the period
during  which  Options  may be granted  hereunder,  new  Options  may be granted
hereunder covering such unexercised shares.

     4.2  Anti-dilution.  In the event that the outstanding  shares of Stock are
changed  into or  exchanged  for a  different  number or kind of shares or other
securities  of the  Company  or of  another  corporation  by reason  of  merger,
consolidation, reorganization,  recapitalization,  reclassification, combination
of shares, stock split, reverse stock split or stock dividend:

                  (a) The rights under  outstanding  Options granted  hereunder,
         both as to the number of subject shares and the Option Price,  shall be
         adjusted appropriately; and

                  (b) Where  dissolution  or  liquidation  of the Company or any
         merger  or  combination  in  which  the  Company  is  not  a  surviving
         corporation is involved,  each  outstanding  Option  granted  hereunder
         shall  terminate,  but the Optionee  shall have the right,  immediately
         prior to such  dissolution,  liquidation,  merger  or  combination,  to
         exercise his Option,  in whole or in part,  to the extent that it shall
         not have  been  exercised,  without  regard  to the date on which  such
         Option would otherwise have become exercisable pursuant to Sections 5.4
         hereof.

     The foregoing  adjustments  and the manner of application  thereof shall be
determined  solely by the Board,  and any such  adjustment  may  provide for the
elimination of fractional share interests.  The adjustments  required under this
Article  shall apply to any  successor or successors of the Company and shall be
made regardless of the number or type of successive events requiring adjustments
hereunder.

     4.3 Sale of Company. Each Stock Option Agreement shall provide that, upon a
Sale, the Board may elect either (a) to continue the outstanding Options without
any payment or (b) to cause to be paid to the Optionee upon  consummation of the
Sale,  a  payment  equal  to the  excess,  if  any,  of the  sale  consideration
receivable  by the  holders of shares of Common  Stock in such a Sale (the "Sale
Consideration")  over the purchase price for his Option for each share of Common
Stock the Optionee shall then be entitled to acquire under the 1997 Plan. If the
Board  elects to continue  the Option,  then the Company  shall cause  effective
provisions to be made so that the Optionee  shall have the right,  by exercising
the Option prior to the respective  Expiration  Dates,  to purchase the kind and
amount of shares of stock and other securities and property receivable upon such
a Sale by a holder of the number of shares of Common Stock which might have been
purchased upon exercise of the Option  immediately  prior to the Sale. The value
of the Sale  Consideration  receivable by the holder of a share of Common Stock,
if it shall be other than  cash,  shall be  determined,  in good  faith,  by the
Board.  Upon  payment to the  Optionee of the Sale  Consideration,  the Optionee
shall have no further rights in connection with the Option  granted,  the Option
shall be terminated and  surrendered  for  cancellation  and the Option shall be
null and void.

                                       4

<PAGE>

                                    ARTICLE V

                                     OPTIONS

     5.1 Option Grant, Number of Shares and Agreement.
 
               (a)  Exchange  of  Existing  Options.  Subject to the  provisions
          hereof,  each Eligible Director on the Effective Date shall be granted
          an Option to purchase Ten Thousand  (10,000)  shares of Stock for each
          year of such Eligible  Director's tenure as a director of the Company.
          Notwithstanding  the  preceding  sentence,  the grant of Options to an
          Eligible  Director  pursuant to this Section 5.1(a) shall be expressly
          conditioned upon such Eligible Director  surrendering for cancellation
          all stock  options  held by such  Director  which were  granted to him
          under the 1989 Plan, and the number of Options  granted to an Eligible
          Director under this Section 5.1(a) shall in no event exceed the number
          of such stock options granted under the 1989 Plan  surrendered by such
          Director.

               (b) Annual Grant of Options.  Subject to the  provisions  hereof,
          each  Eligible  Director  shall be granted an Option to purchase  Five
          Thousand  (5,000)  shares of Stock on (i) the Effective  Date and (ii)
          each  subsequent Date of Grant (the "Annual  Grant").  Notwithstanding
          anything  herein  to the  contrary,  no  Eligible  Director  shall  be
          entitled to receive more than one Annual Grant in any calendar year.

               (c) Additional  Grant.  Subject to the provisions  hereof, on (i)
          the  Effective  Date and (ii)  each  subsequent  Date of  Grant,  each
          Eligible  Director  shall be  granted an Option to  purchase  up to an
          additional  Six  Thousand  (6,000)  shares of Stock  (the  "Additional
          Grant") if such  Eligible  Director owns on the  respective  Effective
          Date or  subsequent  Date of Grant  (as the case may be) an  amount of
          issued shares of Common Stock of the Company not less than the product
          of 2,500 shares of Common Stock  multiplied  by the sum of one and the
          number  of  years in which he was  granted  previously  an  Additional
          Grant. Notwithstanding the foregoing, for purposes of determining each
          Eligible  Director's   entitlement  to  an  Additional  Grant  on  the
          Effective  Date,  the Eligible  Director  must own not less than 2,500
          shares of Common  Stock of the  Company by April 1, 1998.  An Eligible
          Director who shall not be entitled to receive an  Additional  Grant on
          any particular Date of Grant as a result of the failure to satisfy the
          conditions  set forth in this  Section  5.1(c)  shall be  eligible  to
          receive an  Additional  Grant  pursuant to this Section  5.1(c) on any
          subsequent  Date of  Grant.  Notwithstanding  anything  herein  to the
          contrary,  no Eligible Director shall be entitled to receive more than
          one Additional Grant in any calendar year.

                                       5
<PAGE>


               (d)  Agreement.  Each Option so granted  shall be  evidenced by a
          written  Stock  Option  Agreement,  dated as of the Date of Grant  and
          executed  by the  Company  and  the  Optionee,  stating  the  Option's
          duration,  time  of  exercise,  and  exercise  price.  The  terms  and
          conditions of the Option shall be consistent with the 1997 Plan.

     5.2 Option  Price.  The Option  Price of the Stock  subject to each  Option
shall be the Fair Market Value of the Stock on its Date of Grant.

     5.3 Option Expiration. Each Option shall expire on the tenth anniversary of
such Option's Date of Grant (the "Expiration Date").

     5.4 Option Exercise.

               (a) Any Option  granted under the 1997 Plan may not be exercised,
          in whole or in part, until the first anniversary of the Date of Grant,
          subject  to any  additional  conditions  imposed  by the Board and set
          forth in a Stock Option  Agreement.  If an Eligible  Director shall be
          removed  "for cause" as a member of the Board of Directors on or prior
          to the  first  anniversary  of the Date of Grant of any  Option,  such
          Option shall terminate and be forfeited.  Subject to the provisions of
          this Section 5.4(a),  an Option shall remain  exercisable at all times
          until  the  Expiration  Date,   regardless  of  whether  the  Optionee
          thereafter   continues   to   serve  as  a   member   of  the   Board.
          Notwithstanding the foregoing, an Additional Grant shall automatically
          terminate  and be forfeited  in the event that the  Eligible  Director
          holding such Additional Grant shall fail to continue to own the number
          of shares of Common  Stock  which  were  equal to the number of shares
          which were a condition of such Additional  Grant. Any such termination
          and  forfeiture  shall be done on a pro rata  basis to the  number  of
          shares sold or disposed of.

               (b) An Option may be  exercised  at any time or from time to time
          during the term of the Option as to any or all full shares  which have
          become exercisable in accordance with this Section, but not as to less
          than one hundred shares of Stock unless the remaining  shares of Stock
          that are so exercisable are less than one hundred shares of Stock. The
          Option  Price is to be paid in full in cash upon the  exercise  of the
          Option.  The holder of an Option shall not have any of the rights of a
          shareholder  with respect to the shares of Stock subject to the Option
          until such shares of Stock have been issued or transferred to him upon
          the exercise of his Option.

               (c) An Option shall be exercised by written notice of exercise of
          the Option,  with  respect to a  specified  number of shares of Stock,
          delivered to the Company at its principal office,  and by cash payment
          to the Company at said  office of the full amount of the Option  Price
          for such number of shares.  In addition  to, and prior to the issuance
          of a  certificate  for shares  pursuant  to any Option  exercise,  the
          Optionee  shall  pay to the  Company  in cash the full  amount  of any
          Federal,  state or local  income or  employment  taxes  required to be
          withheld by the Company as a result of such exercise.

                                       6

<PAGE>
               (d) At the  discretion of the Board,  the Stock Option  Agreement
          may  provide  that an  Option  granted  under  the  1997  Plan  may be
          exercised  with  respect to a  specified  number of shares of Stock by
          written notice of exercise to the Company  stating that (i) the option
          price for the shares and any  withholding tax due thereon will be paid
          to the Company directly by a broker-dealer  designated by the Eligible
          Director  and  irrevocable  instructions  to  such  effect  have  been
          furnished by the Eligible Director to such broker-dealer,  and (ii) an
          advice from the broker-dealer  confirming  payment to the Company will
          be promptly delivered to the Company.  The exercise of any such option
          shall be irrevocable  at the time of notice to the Company;  provided,
          however,   that  the   Company   shall  not  be  required  to  deliver
          certificates  for shares of Stock with  respect to the exercise of the
          option  until  the  Company  has  confirmed  the  receipt  of good and
          sufficient funds in payment of the purchase price thereof.

     5.5 Nontransferability of Option. Unless otherwise provided in the relevant
Stock Option Agreement,  options may not be transferred by an Optionee otherwise
than by will or the laws of descent and distribution, or by a Qualified Domestic
Relations  Order.  Unless  otherwise  provided  in  the  relevant  Stock  Option
Agreement,  during the lifetime of an Optionee, his Option may be exercised only
by him (or by his guardian or legal representative,  should one be appointed) or
by his spouse to whom the Option has been  transferred  pursuant  to a Qualified
Domestic  Relations Order. In the event of the death of an Optionee,  any Option
held by him may be exercised by his legatee(s) or other distributee(s) or by his
personal representative(s).


                                   ARTICLE VI

                               STOCK CERTIFICATES

     The Company shall not be required to issue or deliver any  certificate  for
shares of Stock  purchased upon the exercise of any Option granted  hereunder or
any portion thereof unless, in the opinion of counsel to the Company,  there has
been compliance with all applicable legal requirements.  An Option granted under
the 1997 Plan will provide that the Company's  obligation  to deliver  shares of
Stock upon the  exercise  thereof  may be  conditioned  upon the  receipt by the
Company of a representation as to the investment intention of the holder thereof
in such form as the Company shall determine to be necessary or advisable  solely
to comply with the provisions of the Securities Act of 1933, as amended,  or any
other Federal,  state or local  securities  laws. All certificates for shares of
Stock  delivered  under the 1997 Plan  shall be  subject  to such stop  transfer
orders and other restrictions as the Company may deem advisable under the rules,

                                       7
<PAGE>

regulations,  and other requirements of the Securities and Exchange  Commission,
any stock  exchange upon which the Stock is then listed,  any Federal,  state or
local securities laws and applicable  corporate law, and the Company may cause a
legend  or  legends  to be put on any  such  certificates  to  make  appropriate
reference to such restrictions.


                                   ARTICLE VII

              TERMINATION, AMENDMENT AND MODIFICATION OF 1997 PLAN

     The Board may at any time  terminate the 1997 Plan, and may at any time and
from time to time and, in any respect  amend or modify the 1997 Plan.  The Board
may  amend  the  terms of any award  theretofore  granted  under the 1997  Plan;
provided,  however, that subject to Section 4.1 hereof, no such amendment may be
made by the  Board  which in any  material  respect  impairs  the  rights of the
participant without the participant's consent.


                                  ARTICLE VIII

                    RELATIONSHIP TO OTHER COMPENSATION PLANS

     The adoption of the 1997 Plan shall neither  affect any other stock option,
incentive  or other  compensation  plans in effect for the Company or any of its
subsidiaries,  nor shall the adoption of the 1997 Plan preclude the Company from
establishing  any  other  forms  of  incentive  or other  compensation  plan for
directors of the Company.

                                   ARTICLE IX

                                  MISCELLANEOUS

     9.1 1997 Plan  Binding on  Successors.  The 1997 Plan shall be binding upon
the successors and assigns of the Company.

     9.2 Singular,  Plural; Gender.  Whenever used herein, nouns in the singular
shall include the plural,  and the masculine  pronoun shall include the feminine
gender.

     9.3  Headings,  etc.,  Not Part of 1997  Plan.  Headings  of  articles  and
Sections  hereof  are  inserted  for  convenience  and  reference,  and  do  not
constitute a part of the 1997 Plan.


As of May, 1998


                                       8


                                                                   Exhibit 10.10
                          FOURTH AMENDMENT AND CONSENT
                         TO LOAN AND SECURITY AGREEMENT


     FOURTH AMENDMENT AND CONSENT,  dated as of May 5, 1998 (this  "Amendment"),
to the Loan and  Security  Agreement  referred  to  below by and  among  GENERAL
ELECTRIC  CAPITAL   CORPORATION,   a  New  York  corporation   ("Lender"),   PAR
PHARMACEUTICAL,  INC.,  a New Jersey  corporation  ("Borrower"),  PHARMACEUTICAL
RESOURCES,  INC., a New Jersey corporation ("Parent"),  NUTRICEUTICAL RESOURCES,
INC., a New York corporation ("NRI"), and PARCARE,  LTD., a New York corporation
("ParCare").   Parent,   NRI  and  ParCare  are   hereinafter   referred  to  as
"Guarantors".

                               W I T N E S S E T H

     WHEREAS,  Lender,  Borrower and Guarantors are parties to that certain Loan
and Security Agreement, dated as of December 15, 1996 (as amended,  supplemented
or otherwise modified prior to the date hereof, the "Loan Agreement");

     WHEREAS,  Lender,  Borrower  and  Guarantors  have agreed to amend the Loan
Agreement in the manner,  and on the terms and conditions,  provided for herein;
and

     WHEREAS,  Lender has agreed to consent to certain  actions by Borrower  and
Parent under the Loan Agreement in the manner,  and on the terms and conditions,
provided for herein.

     NOW  THEREFORE,  in  consideration  of the  premises and for other good and
valuable  consideration,  the  receipt,  adequacy and  sufficiency  of which are
hereby acknowledged, the parties to this Amendment hereby agree as follows:

     1.  Definitions.  Capitalized terms not otherwise defined herein shall have
the meanings ascribed to them in the Loan Agreement.

     2.  Amendment  to Section 5(d) of the Loan  Agreement.  Section 5(d) of the
Loan  Agreement  is  hereby  amended  and  restated  in its  entirety  as of the
Amendment Effective Date (as hereinafter defined) to read as follows:

          "(d) enter into any lending, borrowing or other commercial transaction
          with any of its employees,  directors,  Affiliates or any other Credit
          Party   (including   upstreaming   and   downstreaming   of  cash  and
          intercompany  advances,  and  payments by a Credit  Party on behalf of
          another  Credit  Party which are not  otherwise  permitted  hereunder)
          other than (i) loans to employees  in the ordinary  course of business
          in an aggregate  outstanding amount not exceeding $50,000,  (ii) those
          transactions  contemplated  under the Merck Equity Documents and (iii)
          indebtedness  consisting  of  intercompany  loans made by  Borrower to
          Parent  provided  that  (A)  Borrower  and  Parent  shall  record  all
          intercompany  transactions  on their  books  and  records  in a manner
          satisfactory to Lender, (B) no Default or Event of Default would occur
          and  be   continuing   after  giving   effect  to  any  such  proposed

<PAGE>

          intercompany   loan,  and  (C)  the  aggregate   amount  of  all  such
          intercompany  loans  made by  Borrower  to  Parent  shall  not  exceed
          (together with any dividends under Section 5(l)(iv) below)  $1,200,000
          in any Fiscal Year;"

     3.  Amendment  to Section 5(i) of the Loan  Agreement.  Section 5(i) of the
Loan  Agreement  is  hereby  amended  and  restated  in its  entirety  as of the
Amendment Effective Date to read as follows:

          "(i) sell, transfer,  convey,  assign or otherwise dispose
          of  any  of  its  assets  or  properties,   including  its
          Accounts, or issue any shares of its Stock; provided, that
          the foregoing shall not prohibit (i) the sale of Inventory
          or obsolete or unnecessary Equipment or real estate in the
          ordinary  course of its business,  (ii) the sale by Parent
          of  its  Common  Stock  at  Fair  Market  Value  for  cash
          consideration  so long as the proceeds thereof are applied
          to prepayment  of Revolving  Credit  Advances  pursuant to
          Section 1.2(c),  (iii) issuance by Parent of shares of its
          Common Stock upon exercise of the Warrants,  (iv) issuance
          by Parent to its  employees  of  options to  purchase  its
          Common  Stock  pursuant  to the  Stock  Option  Plans  and
          issuance of Common  Stock upon  exercise of such  options,
          (v)  issuance  by  Parent  to  members  of  its  Board  of
          Directors of options to purchase its Common Stock pursuant
          to the 1997  Directors  Stock Option Plan,  adopted by the
          Board of  Directors  of Parent on October  28,  1997,  and
          issuance of Common  Stock upon  exercise of such  options,
          and (vi)  issuance by Parent to employees of Genpharm Inc.
          of  options  to  purchase  up to an  aggregate  of 120,000
          shares of its Common Stock pursuant to a stock option plan
          to be  adopted  by the Board of  Directors  of Parent  and
          issuance of Common Stock upon exercise of such options."

     4.  Amendment to Schedule A to the Loan  Agreement.  Schedule A to the Loan
Agreement is hereby amended as of the Amendment Effective Date as follows:

     (a) The  definition  of "Merck  Equity  Documents"  is hereby  amended  and
restated in its entirety to read as follows:

                    '"Merck    Equity    Documents"    shall    mean,
           collectively, the Merck Stock Purchase Agreement, the Clal
           Letter Agreement, the Merck Services Agreements, the Merck
           Distribution  Agreement,  the Merck Option  Agreements and
           the Merck Registration Rights Agreement."

     (b) The  definition of "Merck Stock  Purchase  Agreement" is hereby amended
and restated in its entirety to read as follows:

                    '"Merck Stock Purchase Agreement" shall mean that
           certain Stock  Purchase  Agreement,  dated March 25, 1998,
           between Parent and Lipha Americas, Inc."


                                       -2-

<PAGE>

     (c) The definition of "Overadvance Limit" is hereby amended and restated in
its entirety to read as follows:

                     '"Overadvance  Limit"  shall mean for each period
            the amount set forth below for such period:

                     Period                      Overadvance Limit
                     ------                      -----------------

            2/17/98 through 4/1/98                  $2,000,000
            4/1/98 through 6/19/98                  $2,500,000
            6/20/98 and thereafter                  $        0"

     (d)  The  following  new  definitions  shall  be  inserted  in  the  proper
alphabetical order:

                '"Clal Letter  Agreement" shall mean that certain
          letter  agreement,  dated March 25,  1998,  among  Parent,
          Merck and Clal Pharmaceutical Industries Ltd.

                 "Merck  Distribution  Agreement"  shall mean that
          certain  Agreement,  dated as of March 25,  1998,  between
          Parent and Genpharm Inc."

                 '"Merck    Option    Agreements"    shall   mean,
          collectively,  that certain (i) Stock Option  Agreement to
          be entered into between  Parent and Merck,  and (ii) Stock
          Option  Agreement to be entered  into  between  Parent and
          Genpharm  Inc.,  each in the form  attached  to the  Merck
          Stock Purchase Agreement."

                 '"Merck Registration Rights Agreement" shall mean that certain
          Registration Rights Agreement to be entered into among Parent, Merck,
          Genpharm Inc. and Lipha Americas, Inc. in the form attached to the
          Merck Stock Purchase Agreement."

                  '"Merck   Services    Agreements"   shall   mean,
          collectively,  that certain (i)  Services  Agreement to be
          entered  into between  Parent and Merck and (ii)  Services
          Agreement to be entered into between  Parent and Genpharm,
          each substantially in the form attached to the Merck Stock
          Purchase Agreement."

     5.  Consent.  (a) Lender  hereby  consents to the amendment by Borrower and
Parent of that certain Amended and Restated Distribution Agreement,  dated as of
July 28, 1997, as amended, supplemented or otherwise modified from time to time,
among SANO Corporation ("SANO"),  Borrower and Parent, in the manner, and on the
terms and conditions set forth in, that certain  letter  agreement,  dated March
31, 1998, among SANO, Borrower and Parent, a copy of which is attached hereto as
Exhibit A.

     (b) Lender  hereby  acknowledges  that the form and  substance of the Merck
Equity Documents are satisfactory to Lender and further consents, under all

                                       -3-

<PAGE>
provisions  of the Loan  Agreement,  to the  execution  and delivery  thereof by
Parent and the consummation of the transactions contemplated therein;  provided,
that all proceeds  received by Parent under the Merck Equity  Documents shall be
immediately  contributed to the capital of Borrower and  immediately  applied by
Borrower to prepayment of Revolving  Credit Advances  pursuant to Section 1.2(c)
of the Loan Agreement.  To the extent any proceeds remain after such prepayment,
Borrower  shall  immediately   invest  such  proceeds  solely  in  a  "Permitted
Investment" until such time as any of the Credit Parties shall use such proceeds
for such uses as shall not be  prohibited  by the Loan  Agreement.  The  parties
agree that such an investment  and such uses shall not constitute a violation of
the Loan Agreement. For purposes of this Amendment, "Permitted Investment" shall
mean (i) marketable direct obligations  issued or unconditionally  guaranteed by
the United  States of America or any agency  thereof  maturing  no more than one
year from the date of creation  thereof,  (ii) commercial paper maturing no more
than one year from the date of creation thereof and currently having the highest
rating obtainable from either Standard & Poor's Corporation or Moody's Investors
Service,  Inc.,  (iii)  certificates of deposit,  maturing no more than one year
from the date of creation thereof, issued by commercial banks incorporated under
the laws of the United States of America, each having combined capital,  surplus
and undivided  profits of not less than $300,000,000 and having a senior secured
rating of "A" or better by a  nationally  recognize  rating  Agency (an "A Rated
Bank"),  and (iv) time deposits,  maturing no more than 30 days from the date of
creation thereof, with A Rated Banks.  Notwithstanding  anything to the contrary
contained  in this  Section  4(b),  (A) Lender  hereby  reserves its right under
Section 3.25 of the Loan  Agreement  to perfect its Lien in the  above-mentioned
proceeds and Permitted Investments and (B) Parent shall not amend, supplement or
otherwise  modify the Merck Equity  Documents after the date hereof,  except for
those amendments, supplements or modifications (1) of the Merck Equity Documents
which do not materially  and adversely  affect Lender and the Credit Parties and
(2) of the Merck Distribution Agreement which are made in the ordinary course of
business. Parent shall promptly deliver to Lender all documents relating to such
amendments, supplements or modifications.

     (c) Lender  hereby  consents  to the  proposed  amendment  to Article IV of
Parent's  Certificate  of  Incorporation  to increase  the number of  authorized
shares of Common Stock from 60,000,000 to 90,000,000  shares,  and the amendment
to Section 6 of Article III of Parent's  By-Laws,  each of which shall be in the
respective form set forth on Exhibit B hereto.

     (d) Lender hereby consents to the cancellation by Parent of indebtedness in
the original principal amount of $343,057.38 owing to it by Kenneth I. Sawyer in
accordance  with  the  terms  of the  proposed  form  of  Amended  and  Restated
Promissory  Note,  to be executed  by Kenneth I. Sawyer in favor of Parent,  the
form of which is attached hereto as Exhibit C.

     6.  Representations  and  Warranties.  To induce  Lender to enter into this
Amendment, each Credit Party hereby represents and warrants that:

               A. The execution,  delivery and  performance by each Credit Party
          of this Amendment:  (i) are within their respective  corporate powers;
          (ii)  have  been  duly  authorized  by  all  necessary  corporate  and
          shareholder  action;  and  (iii)  are  not  in  contravention  of  any

                                      -4-
<PAGE>

          provision   of  their   respective   certificates   or   articles   of
          incorporation or by-laws or other organizational documents.

               B. This  Amendment  has been duly executed and delivered by or on
          behalf of each Credit Party.

               C.  This  Amendment   constitutes  a  legal,  valid  and  binding
          obligation of each Credit Party enforceable  against each Credit Party
          in accordance with its terms,  except as enforceability may be limited
          by applicable bankruptcy,  insolvency,  reorganization,  moratorium or
          similar laws  affecting  creditors'  rights  generally  and by general
          equitable  principles (whether enforcement is sought by proceedings in
          equity or at law).

               D. No Default  has  occurred  and is  continuing  both before and
          after giving effect to this Amendment.

               E. No  action,  claim or  proceeding  is now  pending  or, to the
          knowledge of each Credit Party,  threatened  against any Credit Party,
          at law, in equity or otherwise,  before any court, board,  commission,
          agency or instrumentality  of any federal,  state, or local government
          or of any agency or subdivision  thereof,  or before any arbitrator or
          panel of  arbitrators,  which  challenges  any Credit  Party's  right,
          power,  or competence  to enter into this  Amendment or, to the extent
          applicable,  perform any of its obligations under this Amendment,  the
          Loan  Agreement  or  any  other  Loan  Document,  or the  validity  or
          enforceability of this Amendment, the Loan Agreement or any other Loan
          Document or any action taken under this Amendment,  the Loan Agreement
          or any other Loan Document.

     7. No Other Consents/Waivers. Except as otherwise provided herein, the Loan
Agreement  shall be unmodified and shall continue to be in full force and effect
in accordance with its terms,  and, except as expressly  provided  herein,  this
Amendment  shall  not be  deemed a waiver  of,  or  consent  under,  any term or
condition of any Loan Document and shall not be deemed to prejudice any right or
rights  which  Lender  may  now  have  or may  have in the  future  under  or in
connection  with any  Loan  Document  or any of the  instruments  or  agreements
referred  to  therein,  as the  same may be  amended  from  time to  time.  This
Amendment shall constitute  notice to Lender,  pursuant to Section 3.8(a)(i) and
(iii) of the Loan  Agreement,  of the  transactions  contemplated  by the  Merck
Equity Documents.

     8.  Outstanding  Indebtedness;  Waiver of Claims.  Each Credit Party hereby
acknowledges  and agrees  that as of April 29,  1998 the  aggregate  outstanding
principal  amount of the Revolving Credit Loan is  $10,374,430.37  and that such
principal  amount is payable  pursuant to the Loan  Agreement  without  defense,
offset,  withholding,  counterclaim  or deduction of any kind. Each Credit Party
hereby waives,  releases,  remises and forever  discharges Lender and each other
Indemnified  Person from any and all Claims of any kind or  character,  known or
unknown,  which each  Credit  Party ever had,  now has or might  hereafter  have
against Lender which relates,  directly or indirectly,  to any acts or omissions
of Lender or any other Indemnified Person on or prior to the date hereof.


                                       -5-

<PAGE>
     9. Expenses. Borrower hereby reconfirms its obligations pursuant to Section
10.2 of the  Loan  Agreement  to pay and  reimburse  Lender  for all  reasonable
out-of-pocket  expenses  (including,  without  limitation,  reasonable  fees  of
counsel) incurred in connection with the negotiation, preparation, execution and
delivery of this Amendment and all other documents and instruments  delivered in
connection herewith.

     10.  Effectiveness.   This  Amendment  shall  become  effective  only  upon
satisfaction  in full in the  judgment  of the  Lender of each of the  following
conditions on or prior to May 8, 1998:

               A. Amendment.  Lender shall have received four original copies of
          this  Amendment  duly executed and delivered by Lender and each Credit
          Party.

               B.  Representations  and  Warranties.   All  representations  and
          warranties of or on behalf of each Credit Party in this  Amendment and
          all the other Loan Documents shall be true and correct in all respects
          with the same effect as though such representations and warranties had
          been made on and as of the date  hereof and on and as of the date that
          the other conditions precedent in this Section 10 have been satisfied,
          except  to  the  extent  that  any  such  representation  or  warranty
          expressly relates to an earlier date.

     11.  GOVERNING LAW. THIS AMENDMENT SHALL BE GOVERNED BY, AND INTERPRETED IN
ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK.

     12.  Counterparts.  This Amendment may be executed by the parties hereto on
any number of separate  counterparts and all of said counterparts taken together
shall be deemed to constitute one and the same instrument.

                            (SIGNATURE PAGES FOLLOW)

                                       -6-

<PAGE>

     IN WITNESS  WHEREOF,  the parties  hereto have caused this  Amendment to be
duly executed and delivered as of the day and year first above written.

                                     Borrower:

                                     PAR PHARMACEUTICAL, INC.


                                     By:  /s/ Dennis O'Connor
                                        --------------------------------
                                     Name: Dennis O'Connor
                                     Title:  Vice President & Chief Financial
                                             Officer


                                     Lender:

                                     GENERAL ELECTRIC CAPITAL
                                     CORPORATION


                                     By:  /s/ Martin S. Greenberg
                                        --------------------------------
                                     Name:  Martin S. Greenberg
                                     Its:  Duly Authorized Signatory


                                     Parent:

                                     PHARMACEUTICAL RESOURCES,
                                      INC.


                                     By:  /s/ Dennis O'Connor
                                        --------------------------------
                                     Name: Dennis O'Connor
                                     Title:  Vice President & Chief Financial
                                             Officer





                       (SIGNATURES CONTINUED ON NEXT PAGE)

                                       -7-

<PAGE>


                                     Subsidiary Guarantors:

                                     NUTRICEUTICAL RESOURCES, INC.


                                     By:  /s/ Dennis O'Connor
                                        --------------------------------
                                        Name: Dennis O'Connor
                                        Title:  Vice President & Chief Financial
                                                  Officer


                                     PARCARE, LTD.


                                     By:  /s/ Dennis O'Connor
                                        --------------------------------
                                        Name: Dennis O'Connor
                                        Title:  Vice President & Chief Financial
                                                    Officer



                                       -8-


                                                                   Exhibit 10.11

                                  AMENDMENT TO
                              EMPLOYMENT AGREEMENT

     This Amendment to Employment Agreement,  dated as of April 30, 1998, by and
between   Pharmaceutical   Resources,   Inc.,  a  New  Jersey  corporation  (the
"Company"), Par Pharmaceutical,  Inc., a New Jersey corporation and wholly-owned
subsidiary of the Company ("Par"),  and Kenneth I. Sawyer  ("Executive")  amends
the Employment  Agreement,  dated as of October 4, 1992, as amended from time to
time (the "Employment  Agreement"),  between the Company, Par and Executive. All
capitalized  terms used herein and not otherwise  defined  herein shall have the
meanings ascribed to them in the Employment Agreement.

     WHEREAS, the Company and Lipha Americas,  Inc., a Delaware corporation (the
"Purchaser"),  have entered into a Stock Purchase Agreement (the "Stock Purchase
Agreement"),  dated  March 25,  1998,  providing,  among other  things,  for the
Purchaser  and its  affiliates  to acquire  over 38% of the common  stock of the
Company;

     WHEREAS,  Executive has the right to terminate the Employment Agreement for
Employer's  material breach as a result of the transactions  contemplated by the
Stock Purchase Agreement;

     WHEREAS,  the Stock  Purchase  Agreement  requires  that, as a condition to
closing,  that Executive must (i) waive such breach of the Employment  Agreement
and  agree to  continue  his  employment  with the  Company,  (ii)  agree to the
appointment of a new President and Chief Operating Officer of the Company and/or
any of its subsidiaries designated by the Purchaser and relinquish his title and
position as President of the Company and/or its  subsidiaries  in the event that
the Purchaser elects to make such  designation,  (iii) vote his shares of common
stock of the  Company  in favor of the  transactions  contemplated  by the Stock
Purchase Agreement, and (iv) agree not to exercise his unexercised stock options
previously  granted for a period of three years and ten  business  days from the
date  of  closing  of  the  transactions  contemplated  by  the  Stock  Purchase
Agreement,  notwithstanding  that  otherwise  they would  have been  exercisable
during this period;

     WHEREAS,  Executive owes the Company the principal  amount of  $343,057.38,
plus interest,  under  Executive's  promissory  note, dated August 14, 1997 (the
"Note"); and

     WHEREAS, in consideration of the foregoing agreements and waivers requested
from  Executive,  the Company  has agreed to forgive the Note over a  three-year
period.

     NOW  THEREFORE,  in  consideration  of  the  premises  and  of  the  mutual
agreements  set forth  herein,  the  Employment  Agreement is hereby  amended as
follows:


<PAGE>

     1. Title.  Executive agrees that,  effective upon the election by the Board
of Directors of the Company of a designee of the  Purchaser as the President and
Chief Operating  Officer of the Company and/or any of its  subsidiaries  and any
such designee duly holding such offices,  the Company shall employ  Executive in
the  capacities  of  Chairman  of the Board and Chief  Executive  Officer of the
Company and each of its  subsidiaries  and  Executive  shall no longer be, or be
entitled or required under the Employment  Agreement to be, the President of the
Company and/or any of its  subsidiaries  to the extent that the Purchaser  shall
have so designated.

     2.  Voting.  Executive  hereby  agrees to vote all of the  shares of Common
Stock of the Company owned by him or which he otherwise has the power to vote in
favor of each of the  Proposals  (as defined in the Stock  Purchase  Agreement),
including approval of all Nominees (as defined in the Stock Purchase Agreement).

     3.  Stock  Options.  Executive  hereby  agrees not to  exercise  any of the
unexercised  stock  options  owned by him for a period  of  three  years  and 10
business days from the date of closing of the Stock Purchase  Agreement  without
the prior written consent of the Purchaser, subject to the Closing (as such term
is defined in the Stock Purchase Agreement).  Such agreement shall be more fully
set forth in a stock option  agreement to be executed and delivered by Executive
and the Company.

     4.  Consent  and Waiver.  Executive  hereby  consents  to the  transactions
contemplated  by the Stock  Purchase  Agreement,  including  but not  limited to
Sections 7.9 and 7.10 thereof,  and agrees that such  transactions  shall not be
deemed to  constitute  or cause a breach,  violation  or default by the  Company
under the Employment  Agreement.  Notwithstanding any thing contained in Section
3.2.6 of the Employment Agreement applicable to the transactions contemplated by
the Stock Purchase Agreement,  Executive hereby irrevocably waives his rights to
terminate the Agreement under Section 3.2.6 of the Employment Agreement,  solely
with respect to the transactions contemplated by the Stock Purchase Agreement.

     5. Note  Forgiveness.  Commencing  on April 30,  1998,  the  Company  shall
forgive  the  payment  of the  Note at the  rate of  one-third  of the  original
principal  amount  each year (plus  accrued  interest  on the  forgiven  portion
thereof),  prorated for each month of Executive's employment,  as more fully set
forth in an amended and restated promissory note to be executed and delivered by
Executive and the Company in the form attached as Exhibit A hereto.

                                       2
<PAGE>

     6.  Effect  of  Termination  on  Note  Forgiveness.  The  entire  remaining
principal balance of the Note, if any, including accrued interest thereon, shall
be forgiven and canceled,  without  further  action by any party,  and Executive
shall have no further  liability  to any party with  respect  thereto  effective
immediately  upon  (i) a  termination  of  Executive's  employment  prior to the
expiration  of  Executive's  term of  employment,  by Executive  for  Employer's
Material  Breach,  or by the Company  without Cause,  (ii) in the event that the
Company or Executive elects not to extend  Executive's  term of employment,  the
last day of  Executive's  term of  employment,  or (iii) the  termination of the
Employment Agreement by the Company or Par, whether by rejection, pursuant to 11
U.S.C.  Section 365, or similar  proceedings.  In the event of a termination  of
Executive's  employment for any other reason, the remaining principal balance of
the  Note,  including  incurred  interest  thereon,  which  shall  not have been
forgiven through the date of termination of Executive's  employment shall remain
outstanding and shall be repaid by Executive according to the terms of the Note.

     7. Governing Law. This Amendment to Employment  Agreement shall be governed
by and construed in accordance with the internal laws of the State of New York.

     8. Continued Effect.  Except as modified hereby,  the Employment  Agreement
remains in full force and effect.

                                        3

<PAGE>


     IN  WITNESS  WHEREOF,  this  Amendment  to  Employment  Agreement  has been
executed and delivered by the parties hereto as of the date first above written.


                                           PHARMACEUTICAL RESOURCES, INC.


                                           By:    /s/ Dennis O'Connor
                                              ----------------------------------
                                              Name: Dennis O'Connor
                                              Title: Vice President & Chief
                                                     Financial Officer


                                           PAR PHARMACEUTICAL, INC.


                                           By:    /s/ Dennis O'Connor
                                              ----------------------------------
                                              Name: Dennis O'Connor
                                              Title: Vice President & Chief
                                                     Financial Officer



                                           /s/ Kenneth I. Sawyer
                                           -------------------------------------
                                               Kenneth I. Sawyer








                                        4

                                                                  Exhibit 10.12


                   AMENDED AND RESTATED DISTRIBUTION AGREEMENT


         This Amended and Restated  Distribution  Agreement (the "Agreement") is
entered into as of the 1st day of May, 1998 (the "Execution  Date") by and among
SANO Corporation,  a Florida  corporation  ("SANO"),  Pharmaceutical  Resources,
Inc., a New Jersey  corporation  ("PRI"),  and Par  Pharmaceutical,  Inc., a New
Jersey corporation ("Par").

         WHEREAS,  SANO, PRI and Par have  previously  entered into that certain
Amended and Restated  Distribution  Agreement  as of the 28th day of July,  1997
(the "Prior Agreement");

         WHEREAS,  SANO,  PRI and Par wish to amend and restate their  agreement
with respect to the subject  matter of the Prior  Agreement,  and  supersede the
Prior Agreement in its entirety;

         NOW, THEREFORE,  for good and valuable  consideration,  the receipt and
sufficiency  of which are  hereby  acknowledged,  the  parties  hereto  agree as
follows:



<PAGE>

         CONFIDENTIAL INFORMATION OMITTED AND FILED SEPARATELY WITH THE
                       SECURITIES AND EXCHANGE COMMISSION
                         ASTERISKS DENOTE SUCH OMISSION

                                    ARTICLE I

                              TERMS AND CONDITIONS

      1.1 Definitions.  As used in this Agreement,  the following terms shall
have the meaning ascribed to them below:

          (a) "Affiliate," as to any Person, shall have the meaning set forth in
Rule 405 under the Securities Act of 1933.

          (b)  "Costs"  shall mean,  with  respect to  production  of a Licensed
Product, the cost of goods incurred by SANO in the production thereof determined
in  accordance  with  generally  accepted  accounting  principles  applied  on a
consistent  basis,  as  determined  by  SANO's   independent   certified  public
accountants; provided, however, that notwithstanding the foregoing, it being the
intent of the parties that Costs make SANO whole with respect to all  reasonable
expenditures  related to the  Licensed  Product,  Costs shall  include,  without
limitation,  (i) the delivered cost of all  ingredients  and other raw materials
used  therein,  (ii) a  percentage  of SANO's  overall  labor  cost equal to the
portion which labor hours devoted to the Licensed Product's  production bears to
total labor hours devoted to all SANO product  production,  (iii)  packaging and
other direct  manufacturing and quality control costs and (iv) ratably allocated
costs of marketing  and  promotion  (if any),  product  liability  insurance and
general overhead;  provided, further, that, notwithstanding the foregoing, Costs
shall not include (i) any cost  incurred by SANO in completing  the  Development
Program,  (ii) any  royalties or similar  payments  paid or payable by SANO with
respect to any Licensed Product,  or (iii) any cost specifically  related to the
distribution of the Licensed  Product  outside the United States;  additionally,
(x) with  respect to the  transdermal  nicotine  Licensed  Product  (generic  of
Habitrol(R)) described herein as Product B, Costs shall be reduced on a one-time
basis by [****], and (y) with respect to the transdermal  nitroglycerin  product
(generic of Nitro Dur(R))  described herein as Product A, Costs shall be reduced
on a one-time basis by the sum of the amount set forth as an additional Licensed
Product Fee for that Licensed Product pursuant to Section 7.4 hereof.

          (c) "Development Program" shall mean all actions,  including,  without
limitation,  research  conducted as a part of SANO's  pre-clinical  and clinical
activities,  which is required or  reasonably  necessary to obtain all requisite
governmental  approvals  for the  testing,  manufacture  and  sale  of  Licensed
Products during the term of this Agreement.

          (d) "Exclusive"  shall mean, with respect to any right herein granted,
that no other party shall have such right, directly or indirectly.

                                       2
<PAGE>

          (e) "Generic"  shall mean,  with respect to any drug or product,  that
such drug or product does not  comprise a substance or compound  that is covered
by a claim under any unexpired  U.S.  Patent and/or which is not entitled to any
period  of  market  exclusivity  under  the  Orphan  Drug Act or the Drug  Price
Competition  and Patent Term  Restoration  Act of 1984  according to 21 U.S.C.A.
355(j)(4)(D)(i)or (ii).

          (f)  "Licensed  Product"  shall  mean  the  Transdermal  Generic  Drug
Delivery Systems listed on Exhibit A hereto.  Notwithstanding  any references to
Product  A  herein,   Licensed   Product  shall  not  include  the   transdermal
nitroglycerin product(generic of NitroDur(R)) described as Product A, unless and
until (i) SANO obtains approval of its abbreviated new drug application ("ANDA")
by the United States Food and Drug Administration ("FDA") covering Product A and
(ii) PRI elects, by written notice, to include Product A as a Licensed Product.

          (g) "Net Sales" shall have the meaning set forth in Exhibit B hereto.

          (h) "Person" shall include any individual,  corporation,  partnership,
association,  cooperative,  joint venture,  or any other form of business entity
recognized under the law.

          (i) "Sale" shall mean any action involving selling.

          (j)  "SANO's  Technology"  shall  mean any and all data,  information,
technology,   know-how,   process,   technique,   method,   skill,   proprietary
information,  trade secret,  development,  discovery,  and inventions,  owned or
controlled  by SANO and  specifically  related  to a  Transdermal  Generic  Drug
Delivery  System for the  Licensed  Products  now  existing or  developed in the
future under and during the course of the Development  Program or otherwise,  as
well as  information  related to the  manufacture  of  Licensed  Product(s)  and
specifications and procedures related thereto.

          (k) "Sell" shall mean to,  directly or indirectly,  sell,  distribute,
supply, solicit or accept orders for, negotiate for the sale or distribution of,
or take any other action that is in furtherance of any of the foregoing.

          (l) "Specifications" shall mean the terms and conditions applicable to
the Licensed  Product(s)  as described in the ANDA  approved by the FDA covering
the Licensed Product(s), as the same may be supplemented from time to time.

          (m) "Standard  Packaging"  shall mean a Licensed  Product  packaged in
individual  pouches and in individual  folding cartons consisting of pouch units
per carton  reasonably  specified by Par and  containing any labels and labeling
required  therefor by the FDA and provided in packages that are  appropriate for
regulatory and marketing purposes, and produced at a SANO facility in the United
States,  the grade and quality of the labels,  labeling and packaging  materials
being as specified in the ANDA therefor.

                                       3
<PAGE>

          (n)  "Transdermal  Generic Drug Delivery  System" shall mean a generic
version of a branded transdermal adhesive patch.

          (o) "United  States"  shall mean the 50 states of the United States of
America,  plus the District of Columbia,  the  Commonwealth  of Puerto Rico, the
U.S. Virgin Islands, Guam, Samoa and any other territory which, on the Execution
Date, is a United States government protectorate wherein an ANDA approved by the
FDA is required to sell the Licensed Products in such territory.

                                   ARTICLE II

                             REPRESENTATIONS OF SANO

         2.1 SANO represents and warrants as follows:

          2.1.1  Organization,  etc. It is duly  organized and validly  existing
under the laws of the State of Florida, has all requisite power and authority to
conduct its  business as now, and as proposed to be,  conducted  and to execute,
deliver and perform its  obligations  under this  Agreement.  This Agreement has
been duly authorized,  executed and delivered by SANO and represents a valid and
binding obligation enforceable against SANO in accordance with its terms.

          2.1.2 No  Conflicts;  Consents.  Execution  and  delivery  hereof,  or
performance  by SANO  hereunder,  will not (a) violate or create a default under
(i) SANO's  Articles of  Incorporation  or by-laws  (true and correct  copies of
which have been delivered to Par), (ii) any mortgage, indenture, agreement, note
or other instrument to which it is a party or to which its assets are subject or
(iii) any court order or decree or other governmental directive or (b) result in
the action of any lien,  charge or encumbrance on any material portion of SANO's
assets, except as contemplated hereby.

          2.1.3 SANO's  Technology.  SANO's Technology is, to the best knowledge
of SANO,  sufficient  to enable  SANO to  complete  the  Development  Program as
contemplated hereby. Except as set forth in Schedule 2.1.3, SANO has received no
notice,  and is not aware, that any portion of SANO's Technology  infringes upon
the rights of any other Person.

          2.1.4 Development Program. SANO has filed an ANDA with respect to each
of the Licensed Products and has no knowledge of any fact or circumstance  which
is  reasonably  likely  to  prevent  approval  by the FDA,  other  than  general
conditions  related to the approval  process;  SANO does not hereby represent or
warrant that any Licensed  Product will be approved for commercial sale, or will
ultimately be marketed.

          2.1.5  Information.  All data and other  information  relating to SANO
and/or the Licensed Products provided by SANO, or its agents, to Par was derived
from  SANO's  records  (which  have been  diligently,  and to the best of SANO's
knowledge,  accurately  maintained in all material  respects) and is an accurate
copy or summary thereof in all material respects.

                                       4
<PAGE>

          2.1.6 Employees.  All key employees of SANO have executed  appropriate
confidentiality  agreements with SANO and  assignments of intellectual  property
rights in favor of SANO.  All key  employees of SANO have  executed  appropriate
non-compete  agreements which, by their terms,  extended at least until December
31, 2000.

          2.1.7 Status. SANO represents and warrants to Par that, to the best of
its  knowledge,  information  and belief,  it is not  prohibited by any federal,
state or local law, rule or  regulation or by any order,  directive or policy of
the United  States  government or any state or local  government  thereof or any
federal,  state or local regulatory agency or authority having jurisdiction with
respect to the  distribution of  pharmaceutical  products within its territorial
jurisdiction   from  selling  the  Licensed   Products  within  the  territorial
jurisdiction  of  such  government,  regulatory  agency  or  authority  (on  the
assumption  that  it  holds  whatever   licenses  are  required  for  a  foreign
corporation to carry on business  generally within such  jurisdiction)  and that
SANO is not an Ineligible  Person or Person from whom any United States federal,
state or local  government,  regulatory  authority  or  agency  which  purchases
pharmaceutical  products  (including,  without  limitation,  the federal Defense
Logistics  Agency) will or may not purchase any products  manufactured  by it or
with whom it will or may not  otherwise  conduct  business as a result its being
publicly  listed  or  otherwise  (except  for  the  fact  that  it is a  foreign
corporation).

                                   ARTICLE III

                               OBLIGATIONS OF SANO

         3.1 Level of Effort. SANO shall use its reasonable efforts,  including,
without  limitation,  the  employment  of a  sufficient  number  of  technically
qualified officers and employees, to attempt to complete the Development Program
for each Licensed Product.

         3.2 Progress Reports.  SANO shall, on a monthly basis, by the tenth day
of each month,  inform Par in writing of the progress of the Development Program
and the commencement of any project within the Development Program.

         3.3 Program Updates.  On a date which shall be approximately  three (3)
months  after  the  date  hereof,  and  at  three-month   intervals  thereafter,
representatives  of SANO and of Par shall meet to review the progress and status
of the Development Program then underway.  At such meetings,  Par shall have the
right to request the allocation of priorities to the various projects comprising
the  Development  Program and to suggest  procedures  for their  implementation,
which requests shall be reasonably considered by SANO.

         3.4 Supply and Use of  Information.  The parties shall,  as promptly as
possible, provide to each other any information that comes to the knowledge of a
responsible  officer of any party  relating  to any  adverse  reaction  or other
adverse event  occasioned  during research on,  development or use of a Licensed
Product.   Any  provision  of  information  to  Par  shall  be  subject  to  the
confidentiality obligations of Section 14.4.

                                       5

<PAGE>

         3.5 Clinical  Testing.  All  pre-clinical,  clinical and  post-clinical
testing and stability  testing and other  actions,  including but not limited to
completion  of  the  Development  Program,  required  to  obtain  all  requisite
government  approvals in the United States for the  manufacture and sale of each
Licensed Product shall be conducted by SANO, at its expense unless otherwise set
forth herein.

         3.6 Governmental  Approvals.  SANO shall file all appropriate  requests
and other filings with the  appropriate  government  agencies  within the United
States in order to seek to  obtain  all  requisite  approvals  for the  testing,
manufacture, sale and use of the Licensed Product(s). The decision regarding the
timing of said filings shall be in SANO's sole discretion.  SANO shall have full
and  complete  ownership  of all  governmental  approvals  relating  to Licensed
Products.  SANO shall  provide Par with  appropriate  sections of and a right of
reference to any application  for  registration in the United States except with
respect to those aspects of any  formulation  or  manufacturing  process that is
reasonably deemed proprietary by SANO.

         3.7 Other  Products.  SANO shall  reasonably  apportion or allocate its
resources  among its  products  to  accommodate  the  Development  Programs  for
Licensed Products.

         3.8 Title.  SANO will  protect  and  defend its rights to all  Licensed
Products and SANO's  Technology,  and will indemnify and hold Par, PRI and their
Affiliates, harmless, from and against any claims of infringement or other claim
that SANO is not the owner thereof.

         3.9 Subsidiaries  and Affiliates.  SANO will cause its subsidiaries and
affiliates  to comply  with the  restrictions  and  limitations  imposed on SANO
hereunder with respect to Licensed Products.

                                   ARTICLE IV

                              EXCLUSIVE DISTRIBUTOR

         4.1 Subject to the provisions of this  Agreement,  SANO hereby appoints
Par as the exclusive  distributor of the Licensed Products for the United States
and Par hereby  accepts  such  appointment  and agrees to act as such  exclusive
distributor.  The rights and licenses  granted to Par under this Agreement shall
henceforth be referred to as "the Right." Par acknowledges that it has no rights
with  respect to SANO's  Technology  or the  Licensed  Products,  except for the
distribution rights with respect to the Licensed Products as herein described.

         4.2 SANO, or Par, as applicable,  covenants and agrees that, during the
term  of this  Agreement  or  until  the  Right  (or its  exclusive  nature)  is
terminated in accordance with the provisions hereof:

          4.2.1  SANO  will  refer  to Par all  inquiries  concerning  potential
purchases of Licensed Products received by it from Persons located in the United

                                       6
<PAGE>

States or from  Persons  outside the United  States if SANO knows or  reasonably
suspects  that such Person  intends to resell or export the Licensed  Product to
the United States;

          4.2.2  SANO will  not,  directly  or  indirectly,  knowingly  sell any
Licensed  Product in the United  States nor to any Person  outside of the United
States if SANO  reasonably  expects that such Person intends to resell or export
the  Licensed  Product to the United  States and, if notified by Par that one of
SANO's  customers  is selling the Licensed  Product in the United  States in any
material respect, SANO shall either cease to supply such customer or obtain (and
enforce,  if  necessary)  an  undertaking  from  such  customer  not to sell the
Licensed Product in the United States (unless SANO is precluded from taking such
action under  applicable  law). Par  acknowledges  that SANO will use reasonable
efforts to prevent  the sale of Licensed  Products  in United  States by Persons
other than Par, but shall not be held  responsible if, despite such efforts,  it
is unsuccessful in so doing (subject to its obligations above to cease to supply
or to obtain and  enforce  the  undertaking  as and to the  extent  contemplated
above).

          4.2.3 Par shall not, and shall not authorize,  permit or suffer any of
its Affiliates to, purchase any  Transdermal  Generic Drug Delivery System which
has the same strength,  contains the same active  ingredient and is for the same
indication  as,  and  is  competitive  with,  any of the  Licensed  Products  (a
"Competitive  Product") for distribution,  sale or use in the United States from
any Person other than SANO.  Par shall not, and shall not  authorize,  permit or
suffer any of its Affiliates to, seek  regulatory  approval in the United States
for any Competitive  Product or to, directly or indirectly,  manufacture,  sell,
handle,  distribute or be financially  interested  (except as a stockholder with
not  greater  than a 5%  interest  in a  public  company)  in the  sales of such
products  within the United States for its own account or for the account of any
other Person as agent, distributor or otherwise.

          Notwithstanding  the foregoing,  if Par or PRI becomes an Affiliate of
an entity (the "Merger Partner") as a result of a merger,  acquisition, or other
similar extraordinary corporate transaction,  and such Merger Partner is engaged
in the manufacture or distribution of a Competitive Product, Par shall so notify
SANO and shall  offer (the  "Offer")  to sell,  assign and  transfer to SANO the
Right with respect to the Licensed Product with which such  Competitive  Product
is competitive  in exchange for an amount equal to the Licensed  Product Fee (as
hereinafter  defined) for such  Licensed  Product.  If,  within thirty (30) days
after its  receipt of the Offer,  SANO  accepts the Offer,  SANO  shall,  within
fifteen  (15) days of such  acceptance,  deliver  to Par,  against  delivery  of
appropriate instruments of release and transfer, its promissory note in form and
substance  reasonably  acceptable  to Par,  payable to the order of Par,  in the
principal amount of the Licensed Product Fee, bearing interest at the prime rate
of Citibank,  N.A.,  as  announced  from time to time at its offices in New York
City (the  "Prime  Rate"),  with  interest  and  principal  payable on the first
anniversary  of the date of  delivery  of such note.  From and after the date of
delivery  of such note,  Par shall have no rights with  respect to the  relevant
Licensed Product and SANO shall be free to grant any rights related thereto to a
third party or to retain such rights for itself.  If SANO declines to accept the
Offer or fails to accept the Offer  within the  aforesaid  30-day  period,  this
Agreement  shall remain in full force and effect,  except that the provisions of
this Section 4.2.3 shall not apply to that Competitive Product. Par shall notify
SANO promptly if any Merger Partner has a Competitive Product.

                                       7
<PAGE>

          4.2.4 Par shall not, and shall not authorize,  permit or suffer any of
its Affiliates  to,  directly or  indirectly,  sell any Licensed  Product to any
Person outside of the United  States,  nor to any Person in the United States if
Par or any of its  Affiliates  reasonably  expects  that  such  Person  intends,
directly or indirectly,  to sell or export the Licensed  Product  outside of the
United  States.  If Par is  notified  by SANO  that  one of its  customers  or a
customer of Par or any of its Affiliates is exporting the Licensed  Product from
the  United  States in any  material  respect  Par  shall  (or  shall  cause its
Affiliates  to) either cease to supply such customer or obtain (and enforce,  if
necessary) an undertaking  from such customer not to sell the Product outside of
the United  States  (unless Par or any such  Affiliate is precluded  from taking
such action under applicable law). SANO acknowledges that Par will use (and will
cause its  Affiliates to use)  reasonable  efforts to prevent its customers from
exporting  any Licensed  Product out of the United  States but shall not be held
responsible if, despite such efforts, it is unsuccessful in so doing (subject to
its  obligations  above  to  cease  to  supply  or to  obtain  and  enforce  the
undertaking as and to the extent contemplated above).

          4.2.5  Par  shall  refer to SANO any  inquiry  or order  for  Licensed
Products  which Par or any of its Affiliates may receive from any Person located
outside of the United  States and from any Person  located in the United  States
where Par or any of its  Affiliates  knows or has  reason to  suspect  that such
Person intends to export the Licensed Products outside of the United States.

          4.2.6 The parties acknowledge, agree and declare that the relationship
hereby established between Par and SANO is solely that of buyer and seller, that
each is an independent contractor engaged in the operation of its own respective
business,  that neither  party shall be  considered to be the agent of the other
party for any purpose  whatsoever,  except as otherwise  expressly  indicated in
this  Agreement,  and that,  except as  otherwise  expressly  indicated  in this
Agreement,  neither party has any  authority to enter into any contract,  assume
any obligations or make any warranties or representations on behalf of the other
party.  Nothing in this Agreement  shall be construed to establish a partnership
or joint venture relationship between or among the parties.

          4.2.7 SANO shall not engage in marketing and promotion of the Licensed
Products in the United States unless reasonably requested to do so by Par.

                                    ARTICLE V

                   REPRESENTATIONS OF PAR AND PRI; OBLIGATIONS

         5.1 Par and PRI jointly and severally  represent,  warrant and covenant
as follows:

          5.1.1 Organization,  etc. They are duly organized and validly existing
under  the  laws of the  State  of New  Jersey,  have all  requisite  power  and
authority to conduct  their  business as now and as proposed to be conducted and

                                       8
<PAGE>

to execute,  deliver and perform their  obligations  under this Agreement.  This
Agreement  has been duly  authorized,  executed and delivered by Par and PRI and
represents  a valid and binding  obligation  enforceable  against Par and PRI in
accordance with its terms.

          5.1.2 No  Conflicts;  Consents.  Execution  and  delivery  hereof,  or
performance  by either Par or PRI  hereunder,  will not (a)  violate or create a
default under (i) Par's and PRI's Certificates of Incorporation or by-laws (true
and correct  copies of which have been  delivered to SANO),  (ii) any  mortgage,
indenture, agreement, note or other instruments to which either is a party or by
which  either's  assets are  subject or (iii) any court order or decree or other
governmental  direction  or (b)  result in the  action  of any  lien,  charge or
encumbrance on any material portion of Par's and PRI's assets.

          5.1.3 Information.  All data and other information relating to Par and
PRI provided to SANO by Par and PRI, or their agents, was derived from Par's and
PRI's records (which have been diligently maintained) and is an accurate copy or
summary thereof in all material respects.

          5.1.4  Sufficiency.  Par maintains and agrees that it will continue to
maintain  those  places of  business  and  equipment  to be used in storing  and
shipping the Licensed  Products in  accordance  with Current Good  Manufacturing
Practices of the FDA and all other  applicable  requirements  of the FDA (as the
same may be  modified  from time to time).  Par hereby  further  represents  and
warrants  that it currently  has and/or has  available to it and  maintains  and
agrees to  continue  to have  and/or to have  available  to it and  maintain  an
adequate marketing  organization and qualified sales persons to promote the sale
of the Licensed Products in the United States.

         5.2 Par shall purchase the Licensed  Products from SANO as contemplated
in Article VI hereof.

         5.3 Par will  use its  reasonable  efforts  (utilizing  its  marketing,
distribution  and management  systems and those of its  Affiliates) to develop a
market for and sell the Licensed Products in the United States,  such efforts to
be not less  rigorous  than those efforts used by Par in relation to its leading
or principal  products.  Par shall devote particular  attention to the marketing
and sale of the Licensed  Products and shall use its resources in a way it deems
most effective in promoting the Licensed Products given market conditions.

         5.4 Par shall have sole  discretion  in setting the sales price for the
sale of the Licensed Products, provided that Par shall not specifically discount
the  price  of  the  Licensed  Products  for  the  benefit  of Par or any of its
Affiliates'  other products or to otherwise use the Licensed  Products as a loss
leader or incentive to procure the sale of Par's or any of its Affiliates' other
products.  Rebate and other discount  programs  (excluding any program where the
price of the  Licensed  Products  are  discounted  primarily  for the benefit of
enhancing the sale of Par's or any of its Affiliates' other products)  generally
available to Par's  customers on the purchase of  pharmaceutical  products shall
not be prohibited by this Section 5.4,  provided that such programs  shall be in
accordance with industry standards for comparable products and shall be designed
to promote the sale of the Licensed Products and not other products.

                                       9
<PAGE>

         5.5 Par shall comply with all applicable  laws,  rules and  regulations
relating to  transporting,  storing,  advertising,  promoting and selling of the
Licensed Products within the United States and shall assume sole  responsibility
for all credit  risks and  collection  of  receivables  with respect to Licensed
Products  sold by it and its  Affiliates,  and,  except  as  expressly  provided
herein,  in respect of all dealings  between itself (and its Affiliates) and its
(and their) customers.

         5.6 Par shall notify SANO promptly  upon becoming  aware of any adverse
information  relating to the safety or  effectiveness  of a Licensed Product and
shall  consult  from time to time  with  regard to  competition  or  potentially
competitive products.

         5.7 Par hereby  further  represents  and warrants to SANO that,  to the
best  of its  knowledge,  information  and  belief,  neither  it nor  any of its
Affiliates is prohibited by any federal,  state or local law, rule or regulation
or by any order,  directive  or policy of the United  States  government  or any
state or local  government  thereof or any  federal,  state or local  regulatory
agency or authority  having  jurisdiction  with respect to the  distribution  of
pharmaceutical  products  within its territorial  jurisdiction  from selling the
Licensed  Products  within  the  territorial  jurisdiction  of such  government,
regulatory agency or authority and that neither Par nor any of its Affiliates is
a Person who, by public  notice,  is listed by a United States federal agency as
debarred,  suspended, proposed for debarment or otherwise ineligible for federal
programs in the United States (an  "Ineligible  Person") or Person from whom any
United States federal, state or local government, regulatory authority or agency
which purchases  pharmaceutical  products  (including,  without limitation,  the
federal Defense  Logistics Agency) will or may not purchase any products or with
whom it will or may not  otherwise  conduct  business  as a result of any of its
Affiliates or Par being publicly listed or otherwise.

                                   ARTICLE VI

                                    DELIVERY

         6.1 Licensed  Products  shall be made available to PRI for pickup ready
for shipment in Standard  Packaging,  or as  otherwise  permitted by the FDA, at
SANO's facilities  located in Plantation,  Florida,  or such other facilities in
the continental United States as SANO may utilize with the consent of Par, which
consent shall not be  unreasonably  withheld or delayed,  and SANO shall use its
reasonable  efforts  to  make  available  to Par  sufficient  quantities  of the
Licensed  Products to satisfy  orders for the Licensed  Products.  SANO shall be
solely  responsible  for the  contents of the labels and artwork on all finished
labeled products sold by PRI and its Affiliates. SANO shall provide all Standard
Packaging for the Licensed Products.

         6.2 To assist SANO in scheduling  production for the manufacture of the
Licensed Products,  Par shall provide to SANO,  quarterly,  a nine month rolling
forecast of its requirements for a Licensed Product. The first forecast shall be
provided by Par to SANO approximately six months prior to the anticipated market
launch of a Licensed  Product,  as  reasonably  estimated  by the  parties,  and
thereafter  shall be  provided  to SANO on or  before  the 20th day of the first

                                       10
<PAGE>

month of each successive  quarterly period (to forecast the requirements for the
next nine  succeeding  calendar  months).  It is understood  and agreed that all
forecasts  are  estimates  only and Par  shall  only be bound  to  purchase  the
Licensed  Products  pursuant to purchase  orders  submitted  by it to SANO.  All
purchase orders shall be for minimum batch size quantities  reasonably agreed by
the  parties  and shall  anticipate  an  order/production/availability  cycle of
approximately  twelve  weeks  during the first two  contract  years (as  defined
below)  of  this  Agreement  and  an   order/production/availability   cycle  of
approximately sixteen weeks thereafter.

         6.3  Par  shall  arrange  for  shipping  and/or  transportation  of the
Licensed Products from SANO's facility to Par's Spring Valley, New York facility
and pay all shipping and related  costs.  Risk of loss and title to the Licensed
Product(s) shall pass to Par upon pick-up of the Licensed Products by, on behalf
of or for the account of Par at SANO's facility.

          6.3.1 SANO shall  promptly  notify Par by both fax and telephone  that
any order (or part thereof  acceptable  to Par) is available for pick-up at SANO
(this notice shall hereafter be referred to as the "Availability Notice").

          6.3.2 Par shall use  reasonable  and good faith efforts to pick up the
Licensed Products that are the subject of an Availability Notice within ten (10)
business  days of receipt of the  Availability  Notice;  provided  that, if such
pickup has not  occurred on or prior to the expiry of such ten day  period,  Par
shall,  for purposes of its payment  obligations to SANO pursuant to Section 7.2
below,  be deemed to have picked up the Licensed  Products which are the subject
of the Availability  Notice on the last business day of such ten-day period.  If
the Licensed Products in question have not been picked up by or on behalf of Par
within twenty (20) business days of an Availability  Notice, SANO may, but shall
not be obligated to, cause the Licensed Products to be delivered to Par's Spring
Valley,  New York,  facility by truck or other  overland  delivery at Par's sole
cost and  expense and risk of loss and title to the  Products  shall pass to Par
upon  pickup of the  Products  at SANO's  facility  in the same manner as if the
pickup had been effected by Par itself, provided that SANO shall provide for the
Licensed  Products to be insured  during  transit in a  commercially  reasonable
manner at Par's sole cost and expense.

                                   ARTICLE VII

                           PAYMENTS AND PAYMENT TERMS

         7.1      [INTENTIONALLY OMITTED]

         7.2 Price. The price to PRI for each order, or part thereof  reasonably
acceptable to PRI as contemplated in Section 8.2(d),  of Licensed  Products made
available to PRI  hereunder  shall be SANO's Costs related to such order or part
thereof.  Par shall also pay to SANO any  applicable  federal or state  sales or
excise tax payable on the  purchase of such  Licensed  Products,  which  payment
shall be remitted with the payment of the price as  contemplated  in Section 7.3
below and upon payment thereof by Par to SANO, SANO shall be solely  responsible
for remitting the amount so paid on account of such taxes to the relevant

                                       11
<PAGE>

         CONFIDENTIAL INFORMATION OMITTED AND FILED SEPARATELY WITH THE
                       SECURITIES AND EXCHANGE COMMISSION
                         ASTERISKS DENOTE SUCH OMISSION



governmental  collecting  authorities.  Promptly upon Par's request,  SANO shall
provide Par with reasonable  evidence of such direct costs and applicable  taxes
and payment of such taxes.

         7.3 Payment  Terms.  Payment for each order of Licensed  Products  made
available  by SANO for  pick-up  by Par shall be due  within 35 days of  pick-up
(whether actual or deemed pursuant to Section 6.3.2) by Par at SANO's facility.

         7.4  Additional  Licensed  Product Fee. Upon request by SANO,  Par will
remit up to an aggregate of [****] to fund skin irritation  studies  required by
the FDA for any of the Licensed Products.  Such request shall specify the amount
to be paid for the specific  Licensed Product which is the subject of such study
or  studies,  and the amount so paid by Par shall be deemed an  addition  to and
part of the Licensed Product Fee for such Licensed Product.

         7.5  Additional  Consideration.  Par shall  pay to SANO the  Additional
Consideration  described in Section 11.1 and  Schedule B hereto,  in  accordance
with the provisions of said Section 11.1.

                                  ARTICLE VIII

                               PRODUCT ACCEPTANCE

         8.1  SANO  shall  manufacture  the  Licensed  Products  and  make  them
available for pickup by Par in accordance  with all applicable  laws,  rules and
regulations including,  without limitation, the Specifications applicable to the
Licensed Product in question,  Current Good  Manufacturing  Practices of the FDA
(as the same may change from time to time) and all other applicable requirements
of the FDA and other governmental authorities having jurisdiction.

         8.2 All Licensed  Products  made  available for pick up by Par shall be
accompanied  by  quality  control  certificates  of  analysis  signed  by a duly
authorized  laboratory  official of SANO  confirming that each batch of Licensed
Product covered by such certificate meets its release  Specifications  and shall
be deemed accepted by it unless Par, acting reasonably and in good faith,  shall
give written notice of rejection (hereafter referred to as a "Rejection Notice")
to SANO within 35 days after pick up of the  Licensed  Products by, on behalf of
or for the account of Par at SANO's facility.

          (a) The Rejection Notice shall state in reasonable detail  (sufficient
to enable SANO to identify the nature of the problem and the tests or studies to
be conducted by or on its behalf to confirm or dispute  same) the reason why the
Licensed  Products are not acceptable to Par. If the Licensed  Products meet the
applicable  provisions  of  Section  8.1 and are in  quantities  specified  in a

                                       12
<PAGE>

purchase order,  Par shall not be entitled to reject them. Any Rejection  Notice
shall be accompanied by copies of all written reports relating to tests, studies
or  investigations  performed to that date by or for Par on the Licensed Product
batch rejected.  

          (b) Upon  receipt of such  Rejection  Notice,  SANO may require Par to
return the  rejected  Licensed  Products or samples  thereof to SANO for further
testing,  in which event such Licensed Products or samples thereof,  as the case
may be,  shall be  returned  by Par to SANO or, at SANO's  direction,  at SANO's
expense.  If it  is  later  determined  by  the  parties  or  by an  independent
laboratory  or  consultant  that Par was not justified in rejecting the Licensed
Products or that Par or its Affiliates were the cause of or were responsible for
the problem,  Par shall  reimburse SANO for the costs of the return,  as well as
any other costs or expenses  incurred  by SANO as a result of the  rejection  or
return. 

          (c) Par's test  results  or basis for  rejection  shall be  conclusive
unless  SANO  notifies  Par,  within 30 days of receipt by SANO of the  rejected
Licensed Products or samples or such longer periods of time as may be reasonable
in the  circumstances to enable SANO to conduct (and receive the results of) the
appropriate  tests,  studies  or  investigations  which SANO  should  reasonably
conduct to confirm the problem in question and to identify  the source  thereof,
that it disagrees with such test results or its  responsibility  for the problem
in question.  In the event of such a notice by SANO,  representative  samples of
the batch of the Licensed  Product in question  shall be submitted to a mutually
acceptable  independent  laboratory or consultant (if not a laboratory  analysis
issue) for  analysis  or review,  the costs of which  shall be paid by the party
that is  determined  by the  independent  laboratory  or consultant to have been
responsible  for the  rejection.  

          (d) If a Licensed  Product is rejected  by Par,  Par's duty to pay the
amount payable to SANO pursuant to Section 7.2 hereof in respect of the rejected
Licensed  Product shall be suspended  until such time as it is determined (i) by
an independent  laboratory or consultant  that the Licensed  Product in question
should  not  have  been  rejected  by  Par or  (ii)  by  the  parties  or by any
arbitration  conducted  pursuant  hereto  or by a  final  order  of a  court  of
competent  jurisdiction (which is not subject to further appeal) that any act or
omission of, on behalf of or for which Par or its Affiliates is responsible  was
the cause of the problem that was the basis for the rejection. If only a portion
of an order is  rejected,  only the  duty to pay the  amount  allocable  to such
portion  shall  be  suspended.  

        8.3 In the event any Licensed Products are appropriately rejected by Par
(being Licensed  Products that do not meet the applicable  provisions of Section
8.1 other  than as a result of any act or  omission  by Par or its  Affiliates),
SANO shall replace such Licensed Products with conforming goods or, if requested
by Par, shall provide a credit to Par for the amount, if any, previously paid by
Par to SANO on account of the Licensed Products in question. The credit shall be
provided by SANO to Par  immediately  following  the expiry of the period during
which SANO may  dispute a Rejection  Notice as  contemplated  in Section  8.2(c)
above  (unless the  Rejection  Notice is  disputed by SANO,  in which event such
credit  shall  be  given  only if the  dispute  is  resolved  in  favor of Par).
Replacement  Licensed  Products,  as aforesaid,  shall be delivered to Par at no
cost to Par if Par has already paid for the rejected  Licensed  Products and not
received  a  credit  therefor,  as  aforesaid.  All  delivery  costs,  including

                                       13
<PAGE>

insurance,  incident to the return of Licensed  Products to SANO and delivery of
the replacement  Licensed Products to Par's Spring Valley facility shall be paid
by SANO,  unless the  rejection  is  determined  not to have been  appropriately
rejected, in which case the last sentence of Section 8.2(a) shall apply. 


                                   ARTICLE IX

                             RETURNS AND ALLOWANCES

        9.1 Returns. If Par, acting reasonably and in good faith, accepts from a
customer a return of a Licensed Product and issues to such customer a credit for
the  invoice  price  thereof,  Par may debit  against  the amount of  Additional
Consideration, as hereinafter defined, due to SANO with respect to Net Sales, as
hereinafter defined, in the month in which such return occurs, any Gross Profit,
as hereinafter  defined,  previously paid, credited or due to SANO in respect of
the sale of such returned Licensed Product.

        9.2 Handling of Returns.

          (a) In the  event  any  Licensed  Product  is  returned  to Par by its
customers  because  the  Licensed  Product is alleged  to be  defective  and Par
reasonably  believes  that such  defect  is due to the fault of SANO,  Par shall
notify SANO within ten (10)  working days of any such return and provide or make
available to SANO such samples (if available) and other  information  concerning
the  returned  Licensed  Product  so as to allow SANO to test and  evaluate  the
allegedly  defective  Licensed Product.  Par shall retain a sufficient number of
samples of the allegedly  defective  Licensed Product so that additional samples
are  available  at a later date  should  additional  testing be  required  by an
independent  testing  laboratory as described in Section 9.3(b) below, or by Par
or SANO for their own  purposes.  If not enough  samples exist to be so divided,
then the parties  shall  confer and reach  agreement  as to the  handling of any
available samples.

          (b) SANO shall  complete  its review and  evaluation  of the  returned
Licensed  Product  within  twenty (20)  business  days of receiving the returned
Licensed  Product from Par or such longer period of time as may be reasonable in
the circumstances to enable SANO to conduct or cause to be conducted such tests,
studies or  investigations  (and to receive  the  results  therefrom)  as may be
required to confirm or dispute the  existence  of the problem or to identify the
cause or source thereof.

         9.3    Costs and Credits.

          (a) If  SANO  concludes  or it is  otherwise  determined  pursuant  to
Section 9.3(b) hereof that the returned Licensed Product is defective due to the
fault of SANO:

              (i) any  replacement  Licensed  Product to be  provided by SANO in
        respect of the returned  Licensed Product shall be made available to Par
        without  charge or appropriate  credit shall be given  therefor  (giving
        account to any adjustment made pursuant to Section 9.1 hereof);

                                       14
<PAGE>

              (ii) all  delivery  costs,  including  insurance,  incident to the
        delivery of the  replacement  Licensed  Products to Par's Spring  Valley
        facility  shall  be paid by SANO or  appropriate  credit  shall be given
        therefor; and

              (iii) SANO shall provide a credit to Par for the reasonable  costs
        incurred by Par (or where the duty has been  performed by an  Affiliate,
        pursuant to the provisions of this Agreement,  for the reasonable  costs
        incurred  by  such  Affiliate)  in  respect  of the  defective  Licensed
        Product.

              (b)  If  SANO  asserts  that  the  returned  Licensed  Product  is
defective due  primarily to any act or omission of Par or its  Affiliates or any
agents or other persons acting on their behalf as aforesaid, then representative
samples of the Licensed  Products  shall be  submitted to a mutually  acceptable
independent  laboratory or consultant (if not a laboratory  analysis  issue) for
analysis or review,  the costs of which shall be paid by the party determined by
the independent laboratory or consultant to have been responsible.

              (c) If it is determined in  accordance  with Section  9.3(b) above
that any such defect is  primarily  due to any act or  omission by Par,  then no
credit or other payment of costs shall be due from SANO, and Par shall reimburse
SANO for all costs and  expenses it incurred in  connection  with the return and
investigation.

              (d) If it is determined in  accordance  with Section  9.3(b) above
that no such defect exists or, if existing,  cannot be attributable primarily to
an act or omission of either party,  then any  replacement  Licensed  Product in
respect of the returned  Licensed Product shall be made available to Par without
additional charge or appropriate credit, if any, shall be given therefor, but no
other credits or payments of costs shall be due from SANO.

           9.4  Par  acknowledges  that  the  Licensed  Products  may  be  of  a
perishable  nature and that the  Licensed  Product must be stored and shipped in
accordance with the  Specifications  applicable thereto (to the extent disclosed
in writing to Par or its Affiliates) or the conditions, if any, set forth on its
package label.

           9.5 Par agrees to notify SANO of any customer complaints with respect
to  the  quality,   nature  or  integrity  of  a  Licensed  Product  or  alleged
adverse-drug  experiences  ("ADE") within five (5) working days of their receipt
by Par and of any Par or FDA complaints within 24 hours,  except on weekends and
holidays.  SANO shall have the sole and primary  obligation to file any required
adverse  experience  report  with  FDA.  SANO  shall  also  be  responsible  for
maintaining  complaint  files as  required  by FDA  regulations.  SANO agrees to
investigate  and respond in writing to any  complaint or ADE  forwarded to it by
Par  promptly  and in no event  later than 30 days  after  receipt of the ADE or
complaint   from  Par  (or  such  longer  period  as  may  be  required  in  the
circumstances to enable SANO to conduct such tests, studies or investigations as
may be reasonably required [and to receive the results therefrom] to enable SANO
to  appropriately   respond).  SANO  shall  provide  Par  with  a  copy  of  any
correspondence,  reports,  or other  documents  relating to a  complaint  or ADE
within a reasonable period following generation of such document by SANO.

                                       15
<PAGE>

           9.6 The provisions of this Article 9 shall survive the termination or
expiration of this Agreement.

                                    ARTICLE X

                     DAMAGES, INDEMNIFICATION AND INSURANCE

          10.1 Subject to the limitations set forth in this Article X and to the
other provisions of this Agreement, SANO, on the one hand, and Par, on the other
hand,  covenant and agree to indemnify  and save harmless the other of them from
and against  any and all  claims,  demands,  actions,  causes of action,  suits,
proceedings,  judgments,  damages,  expenses (including reasonable attorney fees
and  expenses),  losses,  fines,  penalties and other similar  assessments  (the
"Damages")  relating  to or arising  out of a breach by any such party of any of
its  representations,  warranties,  covenants or  agreements  contained  herein;
provided  that,  except  where the  breach  arises  out of a  representation  or
warranty  made by a  party  in  this  Agreement  being  intentionally  false  or
inaccurate,  or constitutes a willful  material  breach by a party of any of its
duties or  obligations  hereunder,  the claim of an aggrieved  party for Damages
arising  out of the breach  shall be limited to claiming  the  amounts  owing or
payable  to it in  accordance  with the  provisions  of this  Agreement  and any
out-of-pocket  costs and  expenses  (including  amounts paid or payable by it to
third  parties,   other  than   re-procurement   costs  [except  to  the  extent
contemplated  in Section  14.3 hereof]  which it has incurred and the  aggrieved
party shall not be entitled to recover from the  defaulting  or breaching  party
any lost profits or consequential or punitive damages,  including loss or damage
to its goodwill or reputation.  For purposes of this  Agreement  where Par is in
breach of its duties or obligations hereunder and such duties or obligations, if
delegated by Par to any of its Affiliates, could reasonably be performed by such
Affiliate  and Par has  either not  delegated  such duty or  obligation  to such
Affiliate or such Affiliate has either refused to perform or willfully  breached
such duty or obligation then Par shall be deemed to have willfully breached such
duty or  obligation  hereunder.  Similarly,  whenever in this  Agreement  Par is
required  to cause any of its  respective  Affiliates  to do or to refrain  from
doing any thing herein provided and such Affiliate refuses to do or refrain from
doing  such  thing  or  otherwise   willfully   breaches  the  provision  herein
contemplated  (on the assumption that such Affiliate were bound by the provision
herein  contemplated  as if a signatory  hereto) then Par will be deemed to have
willfully breached the provision of this Agreement in question.

           10.2 In the event that the  release  of a Licensed  Product by Par or
its Affiliates in the United States results in a third party claim:

              (a) to the extent that the Damages  awarded or incurred  relate to
or arise out of the  safety or  effectiveness  of the  Licensed  Product  or the
manufacturing,  packaging, labeling, storage or handling of the Product by SANO,
SANO shall be  responsible  therefor and shall  indemnify  and hold Par harmless
from and against all such damages; and

              (b) to the extent that the Damages  awarded or incurred  relate to
or arise out of the transportation, storage, handling or selling of the Licensed

                                       16
<PAGE>

Product by Par or its  Affiliates,  then Par shall be  responsible  therefor and
shall indemnify and hold SANO harmless from and against all such damages.

         Upon the assertion of any third party claim against a party hereto that
may give rise to a right of  indemnification  under  this  Agreement,  the party
claiming a right to indemnification  (the "Indemnified Party") shall give prompt
notice to the party  alleged to have the duty to  indemnify  (the  "Indemnifying
Party") of the  existence  of such claim and shall give the  Indemnifying  Party
reasonable  opportunity  to control,  defend and/or settle such claim at its own
expense  and with  counsel of its own  selection;  provided,  however,  that the
Indemnified  Party shall,  at all times,  have the right fully to participate in
such  defense  at its own  expense  and with  separate  counsel  and,  provided,
further,  that both parties, to the extent they are not contractually or legally
excluded therefrom or otherwise  prejudiced in their legal position by so doing,
shall cooperate with each other and their respective insurers in relation to the
defense of such third party claims.  In the event the Indemnifying  Party elects
to defend such claim, the Indemnified Party may not settle the claim without the
prior written consent of the Indemnifying  Party. The Indemnifying Party may not
settle the claim  without the prior  written  consent of the  Indemnified  Party
unless,   as  part  of  such   settlement,   the  Indemnified   Party  shall  be
unconditionally  released  therefrom or the Indemnified Party otherwise consents
thereto in writing.  If the Indemnifying  Party shall,  within a reasonable time
after such  notice has been  given,  fail to defend,  compromise  or settle such
claim, then the Indemnified Party shall have the right to defend,  compromise or
settle such claim without prejudice to its rights of indemnification  hereunder.
Notwithstanding  the  foregoing,  in the event of any  dispute  with  respect to
indemnity hereunder,  each party shall be entitled to participate in the defense
of such claim and to join and implead the other in any such action.

         In addition to the  foregoing,  SANO will defend,  at its sole cost and
expense,  its rights with respect to the  Licensed  Products and Par's rights to
distribute the Licensed Products  hereunder against any claim,  action,  suit or
proceeding ("Action") by any third party asserting prior or superior rights with
respect to the Licensed Product,  product  infringement or similar claims (other
than  as may be  based  on acts of Par not  contemplated  herein  or  authorized
hereby) and shall  indemnify and hold Par and its  affiliates  harmless from the
cost of the defense  thereof.  Par shall, at all times,  have the right fully to
participate in such defense at its own expense.  SANO shall control such defense
and shall, in its reasonable discretion,  defend or settle such Action; provided
that,  notwithstanding the foregoing SANO shall not enter into any settlement or
compromise  of any such Action which  requires Par or any of its  Affiliates  to
make  payments  of any kind  without  the  prior  written  consent  of Par or an
unconditional  release of Par and its  Affiliates  with  respect to the  subject
matter of such Action.  The provisions of this paragraph should not be construed
as requiring SANO to bear any damages,  judgments or other  liabilities  entered
against  Par in any such  Action,  provided  that  the  foregoing  shall  not be
construed  as or deemed a waiver of any  rights Par may have  against  SANO as a
result of such Action hereunder, at law or otherwise, and all of such rights, if
any, are expressly reserved.

         10.3  Insurance.  Each of SANO and Par shall  carry  product  liability
insurance in an amount at least equal to Ten Million Dollars  ($10,000,000) with
an insurance carrier reasonably acceptable to the other party, such insurance to

                                       17
<PAGE>

be in place at times  reasonably  acceptable to the parties,  but not later than
the date of the first  commercial sale of a Licensed  Product.  Each party shall
promptly  furnish to the other  evidence  of the  maintenance  of the  insurance
required  by this  Section  10.3  and  shall  name the  other as an  "additional
insured" under such insurance  policy.  Each party's  coverage shall (i) include
broad form  vendor  coverage  and such other  provisions  as are  typical in the
industry and (ii) name the other party as an additional insured thereunder. SANO
shall carry  clinical  testing  insurance  in an amount and at times  reasonably
acceptable to the parties.

         10.4  Survival.  The  provisions  of this  Article X shall  survive the
termination or expiration of this  Agreement,  provided that the  requirement to
maintain the insurance contemplated in Section 10.3 above shall only survive for
a period of 36 months from the effective  date of  termination  or expiration of
this Agreement.

                                   ARTICLE XI

              ADDITIONAL CONSIDERATION, REPORTING AND VERIFICATION

         11.1 Additional  Consideration.  As additional  consideration  for SANO
entering into this Agreement and permitting Par to sell the Licensed Products in
the United States in accordance with the provisions hereof, Par agrees to pay to
SANO the  additional  amounts more  particularly  described in Exhibit B to this
Agreement in respect of the  aggregate  Gross Profit (as that term is defined in
Exhibit B) of the Licensed  Products.  The amount payable to SANO  determined in
accordance  with Exhibit B is herein and in Exhibit B annexed hereto referred to
as the  "Additional  Consideration."  Par  shall  pay to SANO,  monthly,  on the
seventh  day of each  month,  commencing  on the  seventh day of the third month
after the month in which sales of the Licensed Products commence, the Additional
Consideration  payable  to SANO in  respect  of the Net  Sales  of the  Licensed
Products made by Par and its Affiliates  during the third preceding  month.  For
greater  certainty,  examples of what constitutes the "third preceding  calendar
month" are contained in Exhibit B annexed hereto.  The consideration  payable to
SANO  pursuant to this  Article XI shall be paid to it as part of the sale price
of the  Licensed  Product from SANO to Par and shall not be treated as a royalty
or similar payment.

         11.2     Reporting and Information Obligations of Par.

              (a) Approved Contracts. Par shall provide to SANO, monthly, within
seven days of the expiry of each calendar  month during the term hereof,  a copy
of each Approved Contract (as hereinafter defined), entered into by Par with its
customers during the immediately  preceding month irrespective of whether a copy
of such contract had previously been forwarded to SANO. If the Approved Contract
has a term of less than 18 months,  Par may delete  (e.g.,  by blacking out) any
information  in the  Approved  Contract  that tends to indicate  the identity or
location  of the Par  customer;  provided,  however,  that Par  marks  each such
Approved  Contract with a unique  customer code relative to the customer that is
the party to that Approved Contract.

                                       18
<PAGE>

              (b) Net Sales and Gross Profits. Par shall report to SANO monthly,
on the 7th day of each  calendar  month during the term hereof and for 12 months
after the termination hereof:

                   (i) a sales summary, in the form annexed hereto as Exhibit C,
              showing  all sales of the  Licensed  Products  made by Par and its
              Affiliates during the immediately preceding calendar month;

                   (ii)  a  detailed  statement  showing  all  returns  and  all
              credits, rebates,  allowances and other debit and credits relevant
              to the  calculation of Net Sales and Gross Profits (as those terms
              are  defined  in  Exhibit B annexed  hereto)  for the  immediately
              preceding calendar month together with copies of all documentation
              to  support  allowable  adjustments  used in  computing  Net Sales
              during the period in question;

                   (iii) a certificate  signed by the Chief Financial Officer of
              Par certifying that, to the best of his knowledge, information and
              belief, after reasonable  investigation,  the foregoing statements
              contemplated in (i) and (ii) above are true and correct and do not
              omit any material  information required to be provided pursuant to
              this Section 11.2(b) and

                   (iv)  a  summary  of  the   calculation   of  the  Additional
              Consideration payable to SANO on such date.

         For purposes of this  Agreement a sale shall be considered to have been
         made at the time the Product(s) are shipped to the customer.

         11.3  Par  shall  make  available  for  inspection  by  SANO  at  Par's
facilities  and shall cause its  Affiliates to make  available for inspection by
SANO at their respective  facilities,  promptly  following a reasonable  request
therefor,  such additional information concerning any sales (including,  without
limitation, in respect of any sale, the date of the shipment, the code number of
the customer [or the name of the customer in the case of a customer disclosed to
SANO pursuant to Section 11.2(a) hereof and an Approved Contract], the number of
units of each Licensed Product in each dosage involved (broken down by container
size per  Product,  and the  invoice  price  charged by Par or its  Affiliates),
credits, returns, allowances and other credits and debits previously reported to
SANO  pursuant  to  Section  11.2(b)(ii)  hereof  or with  respect  to  Approved
Contracts previously reported to SANO pursuant to Section 11.2(a) hereof as SANO
may  reasonably  require from time to time (except  information  concerning  the
identity or location of a customer where Par is not already required to disclose
that  information to SANO pursuant to Section  11.2(a) hereof) to enable SANO to
confirm  or  reconcile  the  amounts  which  are or were to have been paid to it
pursuant to this  Agreement  (without the need to audit the books and records of
Par or its Affiliates pursuant to Section 11.4 hereof).

         11.4 Par shall keep and shall cause its Affiliates to keep complete and
accurate  records and books of account  containing all information  required for
  
                                       19
<PAGE>

the  computation  and  verification of the amounts to be paid to SANO hereunder.
Par further  agrees  that at the request of SANO,  it will permit and will cause
its Affiliates to permit one or more accountants selected by SANO, except any to
whom Par or such Affiliate has some reasonable  objection,  at any time and from
time to time,  to have access during  ordinary  working hours to such records as
may be necessary  to audit,  with respect to any payment  report  period  ending
prior to such request,  the correctness of any report or payment made under this
Agreement,  or to obtain  information as to the payments due for any such period
in the case of failure of Par to report or make payment pursuant to the terms of
this  Agreement.  Such  accountant  shall not  disclose to SANO any  information
relating to the  business of PRI except that which is  reasonably  necessary  to
inform SANO of:

                   (i) the accuracy or inaccuracy of Par's reports and payments;

                   (ii) compliance or  non-compliance  by Par with the terms and
              conditions of this Agreement; and

                   (iii) the extent of any such  inaccuracy  or  non-compliance;
              provided,  that  if it is  not  reasonably  possible  to  separate
              information  relating  to the  business  of Par from that which is
              reasonably  necessary  to  so  inform  SANO,  the  accountant  may
              disclose  any  information  necessary  to so inform  SANO and SANO
              shall retain all other information disclosed as confidential.

         Par shall  provide and shall cause its  Affiliates  to provide full and
complete access to the accountant to Par's and such Affiliates'  pertinent books
and records and the  accountant  shall have the right to make and retain  copies
(including  photocopies).   Should  any  such  accountant  discover  information
indicating  inaccuracy in any of Par's payments or  non-compliance by Par or its
Affiliates  with  any of such  terms  and  conditions,  and  should  Par fail to
acknowledge  in writing to SANO the deficiency or  non-compliance  discovered by
such  accountant  within  ten (10)  business  days of being  advised  of same in
writing by the  accountant,  the  accountant  shall have the right to deliver to
SANO copies (including photocopies) of any pertinent portions of the records and
books of account which relate to or disclose the  deficiency  or  non-compliance
(to the extent not  acknowledged by Par). In the event that the accountant shall
have questions  which are not in its judgment  answered by the books and records
provided to it, the  accountant  shall have the right to confer with officers of
Par or such  Affiliate,  including  Par's or such  Affiliate's  Chief  Financial
Officer.  If any audit  under  this  Section  shall  reveal an  underpayment  or
understatement  of the amount  payable to SANO by more than  $10,000.00  for any
period in question, Par shall reimburse SANO for all costs and expenses relating
to such  investigational  audit.  SANO  shall  only have the right to audit such
books and records of Par and its  Affiliates  pursuant to this  Section  11.4 no
more often than twice in any contract year unless  earlier in such contract year
or in any of the prior  three  contract  years  such  investigation  revealed  a
discrepancy of more than $10,000.00, as aforesaid, in which case SANO shall have
the right to audit such books and records three times in such contract year. For
purposes of this  Agreement,  a contract year shall be a period of twelve months
commencing on either the date of this  Agreement or on an  anniversary  thereof.
Unless the disclosure of same is reasonably  required by SANO in connection with
any litigation or arbitration  arising out of such audit,  the accountant  shall

                                       20
<PAGE>

not reveal to SANO the name or address (or other information  reasonably tending
to identify the location of a customer) of any customer of Par or its Affiliates
[other than one whose name has been  disclosed to SANO  pursuant to Section 11.2
hereof], but shall identify such customer to SANO, if necessary, by the customer
code number used by Par in its  reporting  obligations  to SANO [and Par and its
Affiliates shall make such information  known to the accountant].  Par may, as a
condition to providing any accountant  access to its books and records (or those
of its  Affiliates),  require  SANO  to  execute  a  reasonable  confidentiality
agreement consistent with the terms of this Section 11.4.

         11.5 Except as specifically set forth to the contrary,  all payments to
be made under this Agreement  shall bear interest equal to two percent above the
prime rate as quoted by Citibank N.A., New York, New York,  calculated daily (as
at the close of business on each such day) and compounded monthly,  from the day
following  the day the  payment  is due until the date on which it is paid.  Any
adjustment  to the prime rate as quoted by Citibank N.A. from time to time shall
result in a corresponding  adjustment to the rate of interest payable hereunder,
the rate of interest  quoted by  Citibank  N.A. at the close of business on each
day to be the rate applicable for such day.

         11.6 The obligation of Par to make the payments contemplated in Section
11.1 and to provide the reports and  information  contemplated  in Sections 11.2
and 11.3 and the right of SANO to conduct its audits or investigations  pursuant
to Section 11.4 hereof  shall  survive the  termination  or  expiration  of this
Agreement and shall apply to all Licensed Products made available to Par by SANO
prior to the effective  date of the  termination or expiration of this Agreement
(or made  available  to Par after such date  pursuant to any  provision  of this
Agreement)  notwithstanding  that such Licensed Products may have been resold by
Par or its  Affiliates to its or their  customers  after the  effective  date of
termination or expiration.  For greater certainty,  the parties  acknowledge and
agree  that  it  is  their  intention  that  Par  pay  to  SANO  the  Additional
Consideration  applicable to Net Sales of all Licensed Products supplied by SANO
to Par  pursuant  to this  Agreement  (in  respect of which the  purchase  price
charged  by SANO to Par  therefor  [whether  paid or owing]  was  determined  in
accordance with the provisions of Section 7.2 hereof or was provided to Par free
of such charge pursuant to any other  provision of this Agreement)  irrespective
of whether such Licensed  Product is resold by Par or its Affiliates prior to or
subsequent to the effective  date of termination or expiration of this Agreement
and that SANO's  rights  pursuant to Section  11.4 hereof  shall  continue for a
period of twelve  (12)  months  following  the final  sale of all such  Licensed
Products.

         11.7 Par shall have the right,  upon reasonable  advance written notice
to SANO, to inspect SANO's  facilities at which the Licensed  Products are being
manufactured to monitor compliance by SANO with FDA Good Manufacturing Practices
and to otherwise  confirm that the Licensed  Products are being  manufactured in
accordance with their respective Specifications.  Similarly, SANO shall have the
right, upon reasonable advance written notice to Par to inspect those facilities
of Par and any of its  Affiliates  which are used in the  storage  of any of the
Licensed  Products to ensure  compliance by Par or such  Affiliate with FDA Good
Manufacturing  Practices and to otherwise  ensure that the Licensed  Products do
not cease to meet their  Specifications  as a result of any  storage or shipping
conducted by Par or its  Affiliates.  SANO shall cooperate with Par in providing
access to its facilities and Par shall  cooperate and shall cause its Affiliates

                                       21
<PAGE>

to  cooperate  in providing  access to SANO to its  facilities  and those of its
Affiliates used as aforesaid.

         11.8 SANO shall keep complete and accurate records and books of account
containing all  information  required for the  computation  and  verification of
SANO's Costs as  contemplated in Section 7.2 hereof with respect to the Licensed
Product(s)  made available to Par by SANO pursuant  hereto.  SANO further agrees
that at the  request of Par it will permit one or more  accountants  selected by
Par except any to whom SANO has some reasonable objection, to have access during
ordinary  working  hours to such books and records as may be  necessary to audit
the amounts  previously  charged by SANO to Par  pursuant to Section 7.2 hereof.
Such  accountant  shall not  disclose  to Par any  information  relating  to the
business of SANO except the accuracy or inaccuracy of SANO's previously reported
charges  and the  amount,  if  any,  that  Par  may  have  been  overcharged  or
undercharged  with respect to Licensed Products made available to it. Should any
such accountant  discover  information  indicating that Par has been overcharged
for  Products  made  available  to it, and should  SANO fail to  acknowledge  in
writing to Par the  inaccuracy  discovered  by such  accountant  within ten (10)
business  days of  being  advised  of same in  writing  by the  accountant,  the
accountant   shall  have  the  right  to  make  and  retain  copies   (including
photocopies) of any pertinent portions of the records and books of account which
relate to or disclose the inaccuracy (to the extent not  acknowledged  by SANO).
SANO  shall  provide  full and  complete  access  to the  accountant  to  SANO's
pertinent  books  and  records.  In the event  that the  accountant  shall  have
questions which are not in its judgment answered by such books and records,  the
accountant  shall  have the right to confer  with  officers  of SANO,  including
SANO's Chief Financial Officer.  If any audit under this Section shall reveal an
overstatement  of the  amount  payable to SANO by more than  $10,000.00  for the
Licensed  Products  in  question,  SANO  shall  reimburse  Par for all costs and
expenses relating to such investigation/audit.  It is understood and agreed that
Par shall only have the right to audit such books ad records of SANO pursuant to
this Section 11.8 no more often than twice in any contract  year unless  earlier
in  such  contract  year  or in any of  the  prior  three  contract  years  such
investigation revealed a discrepancy of more than $10,000.00,  as aforesaid,  in
which case Par shall have the right to audit such books and records  three times
in such contract year.  Unless the disclosure of same is reasonably  required by
Par in connection with any litigation or arbitration  arising out of such audit,
the accountant shall not reveal to Par the name or address (or other information
reasonably  tending to identify  the  location of a supplier) of any supplier of
materials to SANO in the  manufacturing  or  packaging of the Licensed  Products
(but shall identify such supplier to Par if necessary,  by a code name or number
supplied by such accountant) or the name of or financial information relating to
any  employee of SANO.  SANO may, as a condition  to  providing  any  accountant
access  to  its  books and   records,   require  Par  to  execute  a  reasonable
confidentiality  agreement  consistent  with the terms of this Section 11.8. The
rights of Par  pursuant to this Section 11.8 shall  survive the  termination  or
expiration of this Agreement for a period of one year.

                                       22
<PAGE>

                                   ARTICLE XII

                             RIGHT OF FIRST REFUSAL

         12.1 Right of First Refusal. During the term hereof, Par shall have the
right of first  refusal to  distribute  the  Licensed  Products  in the State of
Israel,  on a  product  by  product  basis,  in  accordance  with the  following
procedures.

         12.2  Procedures.  For each Licensed Product with respect to which SANO
proposes to enter into a  distribution  agreement  in Israel with a third party,
SANO shall  communicate to Par in writing a reasonably  detailed  description of
the provisions of such agreement (a "Proposed Israeli Distribution  Agreement").
Within 30 days of its receipt of a Proposed Israeli Distribution  Agreement (the
"Acceptance  Period"),  Par shall notify SANO whether it wishes to enter into an
agreement  with SANO on such terms.  If Par notifies SANO within the  Acceptance
Period  that it wishes to do so,  Par and SANO will  enter  into a  distribution
agreement  on such terms.  If Par fails to notify SANO of its  election to enter
into such an  agreement  within  the  Acceptance  Period,  SANO may enter into a
license or distribution  agreement with respect to such Licensed  Product with a
third party on substantially the same terms as set forth in the Proposed Israeli
Distribution  Agreement and Par's rights under this Article XII will  terminate.
SANO  may  not  enter  into  such  an  agreement  with a third  party  on  terms
substantially  different from those set forth in the relevant  Proposed  Israeli
Distribution  Agreement without first offering such terms to Par for a period of
thirty  days.  If SANO shall not enter into the  Proposed  Israeli  Distribution
Agreement  within 30 days following the  expiration of the Acceptance  Period or
any extension thereof as set forth in the preceding  sentence,  SANO's execution
of any such Agreement or any other Proposed Israeli Distribution Agreement shall
again be subject to Par's rights under this Article XII. Each  Proposed  Israeli
Distribution  Agreement  for each  Licensed  Product  shall be  subject to Par's
rights of first  refusal in  accordance  with the  procedures  set forth in this
Section 12.2.

                                  ARTICLE XIII

                              TERMS AND TERMINATION

         13.1 This Agreement shall become effective on the date hereof and shall
remain in effect for a period of ten years per Licensed  Product starting on the
date such Licensed Product becomes available for sale in commercial  quantities,
unless earlier  terminated in accordance  with the provisions of this Agreement.
Thereafter,  this Agreement shall  automatically  be renewed as to each Licensed
Product from year to year unless either party gives notice of termination to the
other  party at least one  hundred  and  twenty  days prior to the expiry of the
initial term or of any renewal term.

         13.2  Either  party  may,  by notice  in  writing  to the other  party,
terminate  this  Agreement  if such other party shall have  breached  any of its
material duties or obligations  under this Agreement (other than the obligations
of Par to pay to SANO any amount due to SANO  hereunder  [whether  on account of

                                       23
<PAGE>

Additional  Consideration,  the price for the Licensed Products or otherwise] or
to provide SANO with the reports or information  contemplated in Section 11.2 or
11.3 hereof) and such breach shall remain  uncured for at least sixty days after
the aggrieved party shall have given notice of the breach to the other party.

         13.3 SANO may, by notice in writing to Par, terminate this Agreement if
Par fails to pay to SANO any amount payable by Par to SANO hereunder, whether on
account of the  Additional  Consideration,  the purchase  price for the Licensed
Products,  interest or otherwise, as and when the same shall have become due and
payable or Par shall have failed to deliver (or caused to be  delivered,  as the
case may be), in timely  fashion,  the reports or  information  contemplated  in
Section  11.2 or 11.3  hereof,  and in  either  case,  such  breach  shall  have
continued  unremedied for a period of twelve  business days after written notice
of such breach has been given by SANO to Par;  provided  that Par shall not have
the right to such twelve-day  grace period within which to cure such default and
SANO shall have the  immediate  right to terminate the Agreement for such breach
if Par shall have previously  breached  Section 11.2 or 11.3, or failed to remit
any sums of at least $10,000.00 to SANO, when due, in the aggregate, one time in
the twelve month period immediately preceding the default in question.

         13.4 Either  party may  terminate  this  Agreement on thirty days prior
written  notice to the other  party if such party or the other  party is legally
prohibited from performing its obligations  hereunder (other than by reason of a
breach of its  obligations  hereunder)  or becomes  (or, in the case of Par, its
Affiliate  becomes) an  Ineligible  Person (and,  where the party  purporting to
terminate the Agreement is also the party  prohibited  from  performing or it or
its Affiliate is the Ineligible  Person,  it [or its Affiliate,  as the case may
be] has made diligent good faith best efforts to remove the  prohibition  or its
status as an Ineligible  Person) and such prohibition or status as an Ineligible
Person shall have continued uninterrupted for a period of 120 days.

         13.5  Either  party  may  terminate  this  Agreement  in  respect  of a
particular Licensed Product (the "Specific  Product"),  but this Agreement shall
continue  in respect of any other  Licensed  Product,  on thirty (30) days prior
written notice to the other party (which notice must be delivered within 90 days
of the expiration of the applicable contract year) if the aggregate Net Sales of
the Specific  Product made by PRI and its Affiliates  for any complete  contract
year after the second  anniversary of the date on which such  Specified  Product
became available for sale shall be less than the amounts stated in or determined
pursuant to Section 13.8; provided, however, SANO may not terminate with respect
to any Specific Product pursuant to this Section 13.5 without the consent of Par
in the event that SANO shall have previously  terminated the exclusive nature of
the Right pursuant to Section 13.8 and shall be selling, directly or indirectly,
such Licensed Product in the United States.

         13.6 Either party may terminate this  Agreement in accordance  with the
provisions of Section 15.1 hereof.

         13.7 Par or SANO shall have the right to terminate  this Agreement upon
written  notice to the other in the event that any one or more of the  following
events shall become  applicable to such other party  (herein  referred to as the
"Party"):

                                       24
<PAGE>

              (a) an order is made or a resolution or other action of such Party
is taken for the dissolution,  liquidation,  winding up or other  termination of
its corporate existence;

              (b) the  Party  commits a  voluntary  act of  bankruptcy,  becomes
insolvent,  makes an assignment  for the benefit of its creditors or proposes to
its creditors a reorganization,  arrangement, composition or readjustment of its
debts or obligations or otherwise proposes to take advantage of or shelter under
any statute in force in the United States for the protection of debtors;

              (c) if any  proceeding  is taken with respect to a  compromise  or
arrangement,  or to have such  Party  declared  bankrupt  or to have a  receiver
appointed in respect of such Party or a substantial  portion of its property and
such  proceeding  is instituted by such Party or is not opposed by such Party or
if such  proceeding is instituted by a Person other than such Party,  such Party
does not proceed diligently and in good faith to have such proceeding  withdrawn
forthwith;

              (d) a receiver  or a receiver  and manager of any of the assets of
such Party is appointed and such receiver or receiver and manager is not removed
within ninety days of such appointment;

              (e) such  Party  ceases  or  takes  steps to cease to carry on its
business.

SANO shall  similarly  have the right to terminate  this  Agreement upon written
notice to PRI if any of the foregoing events becomes applicable to any Affiliate
of PRI that has been expressly assigned obligations under this Agreement.

        13.8  (a) If

                   (i) in the  twenty-four  (24) month period (such period being
              herein  referred to as the "A Period")  beginning on the date (the
              "A  Commencement  Date") the first of any  shipments  of  Licensed
              Product "A" is made available to Par hereunder,  the aggregate Net
              Sales of  Licensed  Product "A" for such A Period is less than the
              Product Sales Threshold (as hereinafter defined);

                   (ii) in the twenty-four  (24) month period (such period being
              herein  referred to as the "B Period")  beginning on the date (the
              "B  Commencement  Date") the first of any  shipments  of  Licensed
              Product "B" is made available to Par hereunder,  the aggregate Net
              Sales of  Licensed  Product "B" for such B Period is less than the
              Product Sales Threshold; or

                   (iii) in any twelve month period commencing on the second and
              each  subsequent  anniversary of the A Commencement  Date or the B
              Commencement  Date the Net Sales of the relevant  Licensed Product
              sold by Par and its  Affiliates  in such  period  is less than the
              Product Sales Threshold;

and the  shortfall  in sales  cannot be  attributable  primarily to the fault of
SANO,  SANO  shall  have the right to  convert  Par's  Right  hereunder  from an
exclusive to a non-exclusive right to

                                       25
<PAGE>

         CONFIDENTIAL INFORMATION OMITTED AND FILED SEPARATELY WITH THE
                       SECURITIES AND EXCHANGE COMMISSION
                         ASTERISKS DENOTE SUCH OMISSION

distribute  such Licensed  Product upon ninety days prior written notice to Par.
As used herein,  as to any Licensed  Product,  the Product Sales Threshold shall
mean an amount  reasonably  agreed upon by Par and SANO after  consideration  of
relevant market factors and conditions, provided that if Par and SANO shall fail
or be unable to agree as to any Licensed Product for any period in question, the
Product Sales Threshold for such period and Licensed Product shall be [****].

              (b)  Notwithstanding the exercise by SANO of its right pursuant to
Section 13.8(a) hereof,  and the resultant  conversion of Par to a non-exclusive
distributor hereunder, Par shall have the right to sell the Licensed Products on
a non-exclusive basis on the terms and conditions as set forth herein, except as
provided otherwise in this Paragraph 13.8, during the balance of the term of the
Agreement  (subject to earlier  termination  as herein  provided) and SANO shall
continue  to  supply  the  Licensed  Products  to Par  in  accordance  with  the
provisions  hereof,  provided that the  obligation of SANO to use its reasonable
best efforts to supply Par with its requirements of the Licensed  Products shall
take into account Par's requirements as well as the requirements of SANO and any
other third party  distributor  or  distributors  appointed  by SANO to sell the
Licensed Products in the United States.

              (c) In the event  that SANO  exercises  its rights  under  Section
13.8(a) and  contemporaneously  therewith or subsequent  thereto  enters into an
agreement  with any Person  (herein  referred to as a "Third  Party  Licensee"),
authorizing  or licensing  such Third Party Licensee to sell any of the Licensed
Products in the United  States on royalty,  payment or other cash  equivalent or
otherwise readily economically  measured terms more favorable to the Third Party
Licensee (such more favorable terms being herein referred to as the "MFP") then:

                   (i) SANO  shall  promptly  notify Par of such  agreement  and
              shall  describe  in the notice  both the MFP and any  obligations,
              duties,  undertakings or other consideration to be provided by the
              Third Party Licensee; and

                   (ii) Par shall have  thirty  days from the date of receipt of
              such notice to notify SANO whether Par desires to have the benefit
              of the MFP,  which can be accepted only if Par shall agree (to the
              extent not already  assumed in this  Agreement) to any  additional
              obligations,   duties,   or  undertakings,   and  to  provide  any
              consideration to be provided by the Third Party Licensee.

Par's  entitlement to seek the benefit of the MFP shall be conditioned  upon and
subject to Par assuming and being capable of fully  performing  all the non-cash
obligations  assumed by the Third Party  Licensee in a manner  substantially  as
valuable to SANO.  If Par shall  dispute  such  assessment,  Par shall so notify
SANO,  whereupon  the issue shall be deemed to be a dispute  between the parties
and subject to resolution pursuant to Section 15.2 hereof.

                                       26

<PAGE>

         13.9  Notwithstanding  the  termination or expiration of this Agreement
pursuant to this Article  XIII or any other  provision  of this  Agreement,  all
rights  and  obligations  which  were  incurred  or which  matured  prior to the
effective  date of  termination  or  expiration,  including  accrued  Additional
Consideration  and any cause of action for  breach of  contract,  shall  survive
termination  and be subject to  enforcement  under the terms of this  Agreement.
Termination of this Agreement  shall not affect any duty of Par or SANO existing
prior to the effective  date of  termination or expiration and which is, whether
or not by expressed terms, intended to survive termination. Without limiting the
generality  of the  foregoing,  termination  shall not  affect  any duty to keep
confidential  any Confidential  Information  (within the meaning of Section 14.4
hereof)  disclosed by one party to the other (or its Affiliate) as  contemplated
in Section 14.4 hereof,  but rather such Confidential  Information shall be held
by the receiving  party subject to such  restrictions  on use and  disclosure as
provided in the said Section.

         13.10 Upon  termination  of this  Agreement  by Par pursuant to Section
13.2 or 13.7 or  pursuant  to Section  13.4 as a result of SANO's  inability  to
perform  its  obligations  hereunder  or becoming  an  Ineligible  Person or the
termination  of this  Agreement by SANO  pursuant to Section  13.5 hereof,  SANO
shall,  at the request of Par,  repurchase  all  Licensed  Products  then in the
possession, custody or control of Par and available for sale (and which have not
been  adulterated  since  they were made  available  for pick up by Par) and all
packaging  material  in the  possession,  custody  or  control of Par which were
specifically  acquired by Par for these  Licensed  Products  and which cannot be
used by Par or its Affiliates for any other products sold by any of them, at the
price originally paid by Par therefor plus all  transportation  costs previously
incurred  (even if not yet paid) by Par  payable in cash on  delivery  by Par to
SANO.  SANO shall pay all  transportation  costs  associated  with  shipping the
repurchased Licensed Product to SANO or to such other places SANO may require.

         13.11 In the event that this  Agreement is  terminated  pursuant to the
provisions of Section 13.4 hereof as a result of a party (herein  referred to as
the  "Prohibited  Party") being unable to perform its  obligations  hereunder as
therein  contemplated  or having  become  (or its  Affiliate  having  become) an
Ineligible  Person  and  within  twelve  (12)  months of the  effective  date of
termination of this Agreement the Prohibited  Party is again able to perform its
obligations  hereunder  or has ceased  (or its  Affiliate  has  ceased) to be an
Ineligible Person, then the Prohibited Party shall, by notice in writing, advise
the other party  (herein  referred to as the  "Receiving  Party")  that it is no
longer legally  prohibited from performing its duties and obligations  hereunder
or that it has ceased (or that its  Affiliate  has  ceased) to be an  Ineligible
Person and the Receiving  Party shall have the right,  to be exercised by notice
in writing given to the  Prohibited  Party within thirty (30) days of receipt of
the  aforesaid  notice from  Prohibited  Party,  to  reinstate  this  Agreement;
provided,  however, that if the Prohibited Party is Par then SANO shall have the
right to reinstate  this Agreement as if a proper notice had been given pursuant
to Section 13.8 of this Agreement and Par shall be reinstated on a non-exclusive
basis,  but only to the extent  that such  reinstatement  will not  violate  the
provisions of any  agreement  SANO shall have entered into during the period Par
was a Prohibited Party.



                                       27

<PAGE>

         CONFIDENTIAL INFORMATION OMITTED AND FILED SEPARATELY WITH THE
                       SECURITIES AND EXCHANGE COMMISSION
                         ASTERISKS DENOTE SUCH OMISSION

         13.12 If SANO terminates this Agreement  pursuant to Section 13.2, 13.3
and 13.7 hereof then Par shall not and shall cause its  Affiliates not to, for a
period of twelve (12) months  following the effective date of termination,  sell
in the United States any Competitive Product.

         13.13 In the event that SANO  terminates this Agreement in respect of a
Specific Product pursuant to Section 13.5 hereof,  SANO shall, at the request of
Par,  make  available  to Par  within  a  reasonable  period  of  time  of  such
termination,  such number of units of such Specific Product as shall be equal to
the net number of units of such  Specific  Product sold by Par during the entire
contract  year  immediately  preceding  the year in which this  Agreement  is so
terminated or such lesser  number of units of each such Specific  Product as Par
shall advise SANO in writing within ten business days of such termination.  Such
Specific  Product  shall  be  made  available  to Par  in  accordance  with  the
provisions of this Agreement and the provisions of this Agreement shall apply to
all such Specific  Product as if such Specific Product had been supplied by SANO
during the term of this Agreement.

              (a) If SANO has not  received an approval of an ANDA for  Licensed
Product B prior to the later of [****] for Par may terminate this Agreement with
respect to Licensed  Product B by  providing  SANO with  written  notice of such
termination  and neither party shall have any obligation  hereunder with respect
to Licensed Product B other than applicable  confidentiality  provisions and the
payment  by SANO  described  in the  following  sentence.  In the  event of such
termination,  SANO shall pay Par the sum of (i) [****] and (ii) the amount  paid
by Par in respect of Licensed  Product B pursuant  to Section  7.4 hereof,  with
half of such sum payable three (3) months after SANO's receipt of notice of such
termination  and half of such sum  payable  fifteen  (15)  months  after  SANO's
receipt of notice of such termination.

              (b) For the  purposes of this  Section  13.14,  the dates on which
ANDAs were filed for the respective  Licensed  Products shall be as set forth on
Exhibit A attached hereto.

                                   ARTICLE XIV

               RECALLS, ADMINISTRATIVE MATTERS AND CONFIDENTIALITY

         14.1  Recalls.  In the event  that it  becomes  necessary  to conduct a
recall, market withdrawal or field correction  (hereafter  collectively referred
to as "recall") of any Licensed Product  manufactured by SANO and sold by Par or
its Affiliates the following provisions shall govern such a recall:

                                       28
<PAGE>

              (a)  After  consulting  with  SANO,  and on terms  and  conditions
reasonably  satisfactory  to SANO,  Par  shall  conduct  (and  shall  cause  its
Affiliate to conduct) the recall and shall have primary responsibility therefore
and SANO and Par shall each  cooperate  with the other in recalling any affected
Licensed  Product(s).  Par  covenants  and agrees to  maintain  and to cause its
Affiliates to maintain  such records of all sales of the Licensed  Products made
by  Par or  its  Affiliates  as are  required  by the  FDA or as are  reasonably
appropriate  for a distributor of  pharmaceutical  products to maintain so as to
enable a recall to be properly completed.

              (b)  Irrespective  of whether the recall is initiated by Par or by
SANO:

                   (i) If it is  later  demonstrated  that  the  reason  for the
              recall  was due  primarily  to acts or  omissions  of SANO (or the
              safety or efficacy of the Licensed  Product other than as a result
              of acts or  omissions of Par or its  Affiliates),  then SANO shall
              pay or  reimburse,  as the  case  may be,  all  reasonable  direct
              out-of-pocket  expenses,  including  but not limited to reasonable
              attorney's  fees and  expenses  and  credits  and recall  expenses
              claimed  by and  paid  to  customers,  incurred  by Par or SANO in
              connection with performing any such recall, provided that expenses
              incurred  by  Par  shall  be in  accordance  with  the  terms  and
              conditions of the recall approved by SANO; or

                   (ii) If it is later determined that the reason for the recall
              was  due  primarily  to  the  acts  or  omissions  of  Par  or its
              Affiliates,  then Par shall pay or reimburse,  as the case may be,
              all direct  out-of-pocket  expenses,  including but not limited to
              reasonable  attorney's  fees and  expenses  and credits and recall
              expenses claimed by and paid to customers, incurred by Par or SANO
              in connection with performing any such recall; or

                   (iii) If the  parties  are  unable to agree that the cause of
              the recall was due  primarily to the act or omission of one of the
              parties (or its Affiliates,  as the case may be) within sixty days
              of the initiation of the recall and have not commenced arbitration
              proceedings  to resolve such dispute  within such sixty day period
              then all  direct  out-of-pocket  costs  incurred  by Par and SANO,
              including  but not  limited  to  reasonable  attorney's  fees  and
              expenses  and credits and recall  expenses  claimed by and paid to
              customers,  shall be shared by the parties in  proportion to their
              sharing  of Gross  Profits in  respect  of the  Licensed  Products
              recalled.

Each of the  parties  shall use its  reasonable  best  efforts to  minimize  the
expenses of recall which it incurs.  It is understood and agreed that the direct
out-of-pocket  costs and expenses of the recall  contemplated in Paragraphs (i),
(ii) and (iii) above shall not include the invoice  price  charged by PRI or its
Affiliates  to the customers  for the Products  recalled,  which amount shall be
dealt with in accordance  with the provisions of Section 9 hereof and shall also
not include any excess  re-procurement  costs  (within the meaning of  Paragraph
14.3 hereof) and related penalties and assessments,  which costs,  penalties and
assessments  shall be an  expense  of Par  except  to the  extent  that it is an
expense  of SANO  pursuant  to  Section  14.3  hereof  (provided  that where the
provisions of Paragraph (iii) above apply,  the excess  reprocurement  costs and

                                       29
<PAGE>

related penalties and assessments  incurred  pursuant to Approved  Contracts [as
that term is defined in Section 14.3  hereof]  shall be shared by the parties in
the  proportion  in which Gross  Profits  are shared in respect of the  recalled
Products sold pursuant to such Approved Contracts).

              (c) All Licensed  Products  recalled pursuant to this Section 14.1
shall be treated as Licensed  Products  returned to Par by its customers and the
provisions of Section 9 shall apply thereto.

              (d) The  party  initiating  the  recall  shall  inform  FDA of the
proposed recall;  however,  nothing contained herein shall preclude either party
from  informing  FDA of any proposed or actual recall by either party should the
recalling  party  fail to inform  FDA of that  recall  within ten (10) days of a
written request by the non-recalling party to so inform FDA.

              (e) For greater certainty, in the event of a recall, neither party
or its Affiliates shall profit from any out-of-pocket expenses incurred by it in
connection  with the recall and for which it is  reimbursed  by the other  party
and,  except where the recall  relates  directly to an  intentional  breach of a
representation or warranty contained in this Agreement or arises directly out of
a  willful  material  breach  by a party  of any of its  duties  or  obligations
hereunder (in each case, as contemplated in Section 10.1 hereof),  neither party
shall have a claim  against the other party for any damages,  losses or expenses
which it suffers or incurs as a result thereof except to the extent permitted or
contemplated in this Section 14.

              (f) Each party shall provide  reasonable  evidence to the other of
the  out-of-pocket  expenses being claimed by it and the rights of SANO pursuant
to Section  11.4 and the rights of Par  pursuant  to  Section  11.8 shall  apply
thereto.

         14.2 ANDA-Related FDA Correspondence. Each of the parties shall provide
the other with a copy of any  correspondence  or notices  received by such party
from FDA relating or referring to the Licensed  Product(s)  within ten (10) days
of receipt. Each party shall also provide the other with copies of any responses
to any such  correspondence  or  notices  within  ten (10)  days of  making  the
response.

         14.3     Excess Re-procurement Costs.

              (a)  In  the  event  that  a  recall   occurs   which  recall  was
necessitated  primarily  by any act or omission of SANO and SANO does not supply
Par with replacement Licensed Product on a timely basis or if SANO, in breach of
its  obligations  under  this  Agreement,  fails  to  make  Licensed  Product(s)
available to Par, SANO shall,  in addition to any  reimbursement  required under
Section 14.1, pay any excess  re-procurement  costs and/or related  penalties or
assessments incurred by, or assessed on, Par by a customer of Par pursuant to an
Approved  Contract  (as that term is defined  below) due to Par's  inability  to
supply Licensed Product(s) to such customer due to the aforesaid acts, omissions
or breaches of SANO.

              (b) SANO  shall  cooperate  with Par with  respect to any legal or
administrative  proceedings  that arise pursuant to the Approved  Contracts as a


                                       30
<PAGE>

result of Par's inability to supply Licensed  Product(s) to such customer due to
the  aforesaid  acts,  omissions  or breaches by SANO.  The  foregoing  shall be
without  prejudice  to any other  damages,  expense  or costs  that Par may have
suffered in connection with SANO's  inability to supply the Licensed  Product as
aforesaid,  subject to the  limitations  and other  provisions set forth in this
Agreement.

                  (c) For purposes  hereof the term  "Approved  Contract"  shall
mean a contract  entered into by Par on or after the Execution  Date with one of
its customers:

                   (i) pursuant to which Par agrees to supply such customer with
              pharmaceutical  products  which include the Licensed  Products (or
              any of them),  and which provides that if Par fails to supply such
              customer with the Licensed  Product in accordance  with  specified
              terms and  conditions  therein set forth then such customer  shall
              have the right to procure a comparable replacement product for the
              Licensed  Product in substitution  for the Licensed  Products that
              Par has failed to supply to such customer in  accordance  with the
              provisions  of its  agreement  and to charge back to Par any costs
              and expenses  incurred by such customer to acquire such comparable
              replacement  product in excess of the price which was to have been
              charged by Par to the customer for the Licensed  Products which it
              failed to provide (such excess costs and expenses being the excess
              re-procurement  costs  contemplated  in  Section  14.1 and in this
              Section 14.3);

                   (ii) which has a term of twelve (12) months or less; and

                   (iii) which provides for the supply of the relevant  Licensed
              Product in an amount not greater  than the amount  forecast by Par
              pursuant  to Section 6.2  hereof,  taking  into  account all other
              sales of the Licensed Product in the relevant period; or

                   (iv) where the contract has a term of more than 12 months, or
              provides for an amount greater than that contemplated by Paragraph
              (iii) above, SANO has approved or has been deemed to have approved
              such contract in accordance with the provisions of Section 14.3(v)
              hereof; or

                   (v) if the approval of SANO as contemplated in Paragraph (iv)
              above is requested, Par shall have provided to SANO, in accordance
              with the  provisions  of this  paragraph,  a complete  copy of the
              proposed  final  agreement  between Par and its customer  prior to
              entering into such contract. A copy of any contract to be provided
              to SANO as  contemplated  in this Paragraph (v) shall be forwarded
              to SANO in the manner  contemplated  in Section 15.4 hereof.  SANO
              shall have a period of ten business  days from the date upon which
              copies of such  contract are actually  received by it as aforesaid
              to notify Par in writing  that it does not approve of the contract
              and failing  such notice  from SANO within such ten  business  day
              period SANO shall be deemed to have approved of such contract.



                                       31

<PAGE>

         14.4 Confidentiality.

              (a) The parties agree that,  without the prior written  consent of
the other party (such consent not to be unreasonably  withheld) or except as may
be required  under law or court order,  the  provisions of the  Agreement  shall
remain confidential and shall not be disclosed to any Person not affiliated with
any of the parties.  

              (b) Par and SANO  hereby  agree  not to  reveal  or  disclose  any
Confidential  Information  (as  defined  below)  to  any  Person  without  first
obtaining  the  written  consent  of  the  disclosing  party,  except  as may be
necessary  in  regulatory   proceedings  or  litigation.   For  purposes  hereof
Confidential Information shall mean all information,  in whatever form, which is
or was  disclosed  by one party to another or to an Affiliate of the other prior
to or during  the term of this  Agreement  and which  relates  in any way to the
Products  or to  the  business  of  the  disclosing  party,  including,  without
limitation   information   relating  to  customers  and  pricing.   Confidential
Information  shall  not  include  information  that a party can  demonstrate  by
written evidence:  

                   (i) is in the public domain (provided that information in the
              public  domain has not and does not come into the public domain as
              a result of the  disclosure by the  receiving  party or any of its
              Affiliates);

                   (ii) is known to the receiving party or any of its Affiliates
              prior to the disclosure by the other party: or

                   (iii)  becomes  available to the party on a  non-confidential
              basis from a source  other than an  Affiliate of that party or the
              disclosing  party  and Par  covenants  and  agrees  to  cause  its
              Affiliates to comply with the provisions of this Section 14.4.

                                   ARTICLE XV

                          GENERAL TERMS AND CONDITIONS

         15.1 Force Majeure Clauses.  Neither party shall be considered to be in
default in respect of any obligation  hereunder,  other than the obligation of a
party to make  payment of amounts  due to the other  party  under or pursuant to
this  Agreement,  if failure of performance  shall be due to Force  Majeure.  If
either party is affected by a Force Majeure event,  such party shall,  within 20
days of its occurrence, give notice to the other party stating the nature of the
event, its anticipated  duration and any action being taken to avoid or minimize
its effect.  The suspension of performance  shall be of no greater scope and not
longer  duration  than is required  and the  non-performing  party shall use its
reasonable  best efforts to remedy its inability to perform.  The  obligation to
pay money in a timely  manner is absolute  and shall not be subject to the Force
Majeure  provisions,  except to the extent  prohibited by  governmental  rule or
regulations other than rules or regulations incident to bankruptcy or insolvency
proceedings of a party. Force Majeure shall mean an unforeseeable or unavoidable
cause  beyond the control and without the fault or  negligence  of a party (and,
where the party is Par,  beyond the control and without the fault or  negligence
of any of its Affiliates) including,  but not limited to, explosion,  flood, war

                                       32
<PAGE>

(whether  declared  or  otherwise),  accident,  labor  strike,  or  other  labor
disturbance,  sabotage,  acts of God,  newly enacted  legislation,  newly issued
orders or decrees of any Court or of any  governmental  agency.  Notwithstanding
anything in this Section to the contrary,  the party to whom performance is owed
but to  whom it is not  rendered  because  of any  event  of  Force  Majeure  as
contemplated  in this Section  15.1 shall,  after the passage of one hundred and
twenty days,  have the option to terminate  this  Agreement on thirty days prior
written notice to the other party hereto. For greater  certainty,  the inability
or failure of Par to cause any of its  respective  Affiliates to comply with any
of the provisions of this Agreement  expressed o be applicable to its Affiliates
or which  require such party to cause the Affiliate to do or not to do something
shall not be considered Force Majeure unless the Affiliate in question is unable
to comply by reason of  unforeseeable  or unavoidable  causes beyond the control
and without the fault or negligence of such Affiliate.

         15.2 Arbitration.  All disputes arising out of, or in relation to, this
Agreement  (other than disputes  arising out of any claim by a third party in an
action commenced against a party), shall be referred for decision forthwith to a
senior executive of each party not involved in the dispute.  If no agreement can
be reached  through this process  within  thirty days of request by one party to
the other to nominate a senior  executive  for dispute  resolution,  then either
party hereto shall be entitled to refer such dispute to a single  arbitrator for
arbitration under Florida law, such arbitration to be held in Miami,  Florida on
an expedited  basis in accordance with the rules and regulations of the American
Arbitration  Association.  Any party demanding arbitration shall with service of
its demand for arbitration  propose a neutral arbitrator  selected by it. In the
event that the parties cannot agree upon a neutral arbitrator within thirty (30)
days after the demand for  arbitration,  an arbitrator shall be appointed by the
American Arbitration  Association who shall be a partner in a Miami, Florida law
firm having at least ten (10) partners.

         15.3  Assignment.  This  Agreement  may  not be  assigned  nor  can the
performance  of any duties  hereunder be delegated by Par or by SANO without the
prior  written  consent  of  the  other  parties,  which  consent  shall  not be
unreasonably  withheld;  provided that any such assignment shall not relieve the
assignor from any of its  obligations  hereunder or under any other  document or
agreement  delivered by such party pursuant to, or delivered (or acknowledged to
have been delivered)  contemporaneously with or in connection with the execution
of,  this  Agreement,  which  shall  continue  to be  binding  upon  such  party
notwithstanding such assignment. Notwithstanding the foregoing, Par may delegate
from time to time some of its duties hereunder to any of its Affiliates provided
that,  prior to any such  delegation,  it gives written  notice  thereof to SANO
(indicating the duties being so delegated and the duration of such  delegation);
provided that no such  delegation  shall relieve Par from any of its obligations
hereunder in respect of the duties being delegated or otherwise.


        15.4 Notices.  Any notice  required or permitted to be given under this
Agreement shall be sufficiently  given if in writing and delivered by registered
or certified mail (return receipt  requested),  facsimile (with  confirmation of
transmittal),  overnight  courier  (with  confirmation  of  delivery),  or  hand


                                       33
<PAGE>

delivery to the  appropriate  party at the address set forth  below,  or to such
other  address as such party may from time to time specify for that purpose in a
notice similarly given:

       If to SANO:

         SANO Corporation
         3250 Commerce Parkway
         Miramar, Florida 33025
         Attn: President
         Fax: (954) 430-3390

       with a copy to (other than regularly prepared notices, reports, etc.
       required to be delivered hereunder):

         Greenberg, Traurig, Hoffman,
         Lipoff, Rosen & Quentel, P.A.
         1221 Brickell Avenue
         Miami, Florida 33131
         Attn: Gary Epstein, Esq.
         Fax: 305-579-0717

       If to PRI

         c/o PRI Distributors, Ltd.
         One Ram Ridge Road
         Spring Valley, NY 10977
         Attn: President
         Fax: 914-425-7922

       with a copy to (other than regularly prepared notices, reports, etc.
       required to be delivered hereunder):

         Hertzog, Calamari & Gleason
         100 Park Avenue
         New York, New York 10017
         Attn:    Stephen A. Ollendorff, Esq. and
         Stephen R. Connoni, Esq.
         Fax: (212) 213-1199

Any such notice  shall be  effective  (i) if sent by mail,  as  aforesaid,  five
business days after mailing, (ii) if sent by facsimile, as aforesaid, when sent,
and (iii) if sent by courier or hand  delivered,  as aforesaid,  when  received.
Provided that if any such notice shall have been sent by mail and if on the date
of  mailing  thereof  or  during  the  period  prior to the  expiry of the third
business  day  following  the date of mailing  there  shall be a general  postal
disruption  (whether as a result of rotating strikes or otherwise) in the United

                                       34
<PAGE>

States then such notice shall not become  effective until the fifth business day
following the date of resumption of normal mail service.

         15.5     Governing Law and Consent to Jurisdiction.

              (a) Except as otherwise  provided herein,  this Agreement shall be
deemed to have been made under,  and shall be governed by, the laws of the State
of Florida in all  respects  including  matters of  construction,  validity  and
performance, but without giving effect to Florida's choice of law provisions.

              (b) In connection with any action commenced hereunder, each of the
undersigned  consent  to the  exclusive  jurisdiction  of the state and  federal
courts located in Miami, Florida. Notwithstanding the foregoing, each party also
agrees to the  jurisdiction  of any  court  which a third  party  claim has been
brought.

         15.6  Binding  Agreement.  This Agreement shall be binding upon the 
parties hereto,  and their respective successors and permitted assigns.

         15.7 Entire  Agreement.  This  Agreement  and all other  documents  and
instruments  delivered by any of the parties or their Affiliates pursuant hereto
or in connection  with the execution and delivery of this Agreement  contain the
entire  agreement and  understanding  of the parties with respect to the subject
matter hereof and thereof and supersedes all negotiations, prior discussions and
agreements  relating to the Licensed  Products or the Right.  This Agreement may
not be amended or modified except by a written  instrument  signed by all of the
parties hereto.

         15.8 Headings.  The headings to the various  articles and paragraphs of
this Agreement have been inserted for convenience  only and shall not affect the
meaning of the language contained in this Agreement.

         15.9 Waiver.  The waiver by any party of any breach by another party of
any term or condition  of this  Agreement  shall not  constitute a waiver of any
subsequent breach or nullify the effectiveness of that term or condition.

         15.10  Counterparts.  This  Agreement  may  be  executed  in  identical
duplicate copies.  The parties agree to execute at least two identical  original
copies of the Agreement. Each identical counterpart shall be deemed an original,
but all of which together shall constitute one and the same instrument.

         15.11 Severability of Provisions.  If, for any reason  whatsoever,  any
term,  covenant  or  condition  of this  Agreement  or of any other  document or
instrument  executed and delivered by either Par or SANO  pursuant  hereto or in
connection with the completion of the transaction  contemplated  herein,  or the
application  thereof  to any  party or  circumstance  is to any  extent  held or
rendered  invalid,  unenforceable  or  illegal,  then  such  term,  covenant  or
condition:

                                       35
<PAGE>

                   (i) is  deemed to be  independent  of the  remainder  of such
              document  and to be  severable  and  divisible  therefrom  and its
              validity,  unenforceability or illegality does not affect,  impair
              or invalidate  the remainder of such document or any part thereof;
              and

                   (ii) continue to be applicable and enforceable to the fullest
              extent permitted by law against any party and circumstances  other
              than  those  as to which it has  been  held or  rendered  invalid,
              unenforceable or illegal.

         15.12  Publicity.  Neither party shall issue any press release or other
public  statement  regarding,  or disclosing  the  existence of, this  Agreement
without the prior written consent of the other party;  provided,  however,  that
neither party shall be prevented from  complying with any disclosure  obligation
it may have under  applicable  law. The parties  shall use their best efforts to
agree on the form and content of any such public statement.

                                   ARTICLE XVI

                                GUARANTEE OF PRI

         16.1 Guarantee.  PRI does hereby unconditionally  guarantee to SANO the
full and prompt  payment and  performance  by Par of all of the  obligations  of
every  nature  whatsoever  to be  performed  by Par under  this  Agreement  (the
"Guaranteed  Obligations")  as and when  required to be paid or performed  under
this  Agreement.  The  guarantee  set  forth  in the  preceding  sentence  (this
"Guarantee") is an absolute,  unconditional and continuing guarantee of the full
and punctual payment and performance of the Guaranteed  Obligations and is in no
way conditioned  upon any requirement  that SANO first attempt to enforce any of
the Guaranteed  Obligations  against Par, any other  guarantor of the Guaranteed
Obligations  or any other  Person or  resort  to any  other  means of  obtaining
performance of any of the Guaranteed Obligations.  This Guarantee shall continue
in full force and effect until Par shall have satisfactorily  performed or fully
discharged all of the Guaranteed Obligations.  No performance or payment made by
Par, PRI, any other  guarantor or any other Person,  or received or collected by
SANO from Par, PRI, any other guarantor or any other Person in performance of or
in  payment of the  Guaranteed  Obligations  shall be deemed to  modify,  reduce
(except to the extent  that any such  performance  or payment  shall  reduce the
Guaranteed Obligations),  release or otherwise affect the liability of PRI under
this  Guarantee  which shall,  notwithstanding  any such payment or  performance
other than those made by PRI in respect of the  Guaranteed  Obligations or those
received or collected from PRI in respect of the Guaranteed Obligations,  remain
liable  for the  amount of the  Guaranteed  Obligations,  until  the  Guaranteed
Obligations are paid and performed in full.

         16.2 No Subrogation. Notwithstanding any payment or performance by PRI,
PRI shall not be entitled to be  subrogated  to any of the rights of SANO or any
other guarantor or any collateral security held by SANO against Par or any other
guarantor  or  any  collateral  security  for  the  payment  of  the  Guaranteed
Obligations,  nor  shall PRI seek or be  entitled  to seek any  contribution  or
reimbursement from Par or any other guarantor in respect of payments made by PRI
under this Guarantee.  PRI HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY AND
ALL  RIGHTS  AND  CLAIMS  WHICH  PRI MAY NOW  HAVE OR  HEREAFTER  ACQUIRE  TO BE
SUBROGATED  TO ANY SUCH  RIGHTS OF SANO AND TO SEEK OR BE  ENTITLED  TO SEEK ANY
SUCH  CONTRIBUTION  OR  REIMBURSEMENT  FROM  Par OR  ANY  OTHER  GUARANTOR.  THE

                                       36
<PAGE>

OBLIGATIONS  OF AND WAIVERS BY PRI SET FORTH IN THIS SECTION 16.2 SHALL  SURVIVE
THE TERMINATION OF THIS GUARANTEE AND THE PAYMENT,  PERFORMANCE AND SATISFACTION
IN FULL OF ALL OF THE GUARANTEED OBLIGATIONS.

         16.3 Amendments, etc. with Respect to Guaranteed Obligations; Waiver of
Rights.  PRI shall remain obligated under this Guarantee  notwithstanding  that,
without any  reservation  of rights against PRI and without notice to or further
assent by PRI, any demand for payment or  performance  of any of the  Guaranteed
Obligations  made by SANO may be  rescinded  by SANO  and any of the  Guaranteed
Obligations continued,  and the Guaranteed Obligations,  or the liability of any
other  Person  upon or for any part  thereof,  or any  collateral  security  (or
guarantee  therefor  may,  from time to time,  in whole or in part,  be renewed,
extended, amended, modified,  accelerated,  compromised,  waived, surrendered or
released by SANO and this Agreement,  any collateral  security document or other
guarantee  or  document  in  connection  herewith  may  be  amended,   modified,
supplemented or terminated, in whole or in part, as SANO may deem advisable from
time to time, and any collateral  security or guarantee at any time held by SANO
for the  payment  or  performance  of the  Guaranteed  Obligations  may be sold,
exchanged,  waived,  surrendered or released. SANO shall not have any obligation
to  protect,  secure,  perfect  or  insure  any lien at any  time  held by it as
security for the  Guaranteed  Obligations  or for this Guarantee or any property
subject  thereto.  When making any demand  hereunder  against PRI, SANO may, but
shall be under no  obligation  to,  make a  similar  demand  on Par or any other
guarantor,  and any  failure by SANO to make any such  demand or to collect  any
payments  from Par or any such  other  guarantor  or any  release of Par or such
other guarantor  shall not relieve PRI of its  obligations or liabilities  under
this Guarantee, and shall not impair or affect the rights and remedies,  express
or implied, or as a matter of law, of SANO against PRI.

         16.4 Extent of Liability and Waivers.  PRI  understands and agrees that
the  obligation  of  guarantee  of PRI  pursuant to Section 16.1 are intended to
render PRI liable  hereunder  in each  instance  where Par would be liable under
this  Agreement,  and no more, and except that the  obligations of PRI hereunder
shall not be  discharged  by any  bankruptcy  or  similar  proceeding  which may
discharge Par herefrom.  Accordingly,  PRI acknowledges that it will not assert,
and hereby  waives to the fullest  extent  permitted by law, any rights to avoid
performance  hereunder available to it as guarantor which are not also available
to Par.  PRI waives any and all notice of the  creation,  renewal,  extension or
accrual of any of the Guaranteed  Obligations and notice of or proof of reliance
by SANO upon this  Guarantee or acceptance  of this  Guarantee;  the  Guaranteed
Obligations, and any of them, shall conclusively be deemed to have been created,
contracted or incurred,  or renewed,  extended,  amended or waived,  in reliance
upon this Guarantee;  and all dealings  between Par or PRI, on the one hand, and
SANO on the other,  pursuant to this Agreement  shall  likewise be  conclusively
presumed to have been had or  consummated in reliance upon this  Guarantee.  PRI
waives diligence, presentment, protest, demand for payment and notice of default
or  nonpayment or  nonperformance  to or upon Par or any other  guarantors  with
respect to the  Guaranteed  Obligations.  When  pursuing its rights and remedies
hereunder  against PRI,  SANO may, but shall be under no  obligation  to, pursue

                                       37
<PAGE>

such  rights and  remedies  as it may have  against  Par or any other  Person or
against any collateral security or guarantee for the Guaranteed Obligations, and
any  failure by PRI to pursue  such other  rights or  remedies or to collect any
payments  from  Par or any  such  other  Person  or to  realize  upon  any  such
collateral security or guarantee, or any release of Par or any such other Person
or any such  collateral  security  or  guarantee,  shall not  relieve PRI of any
liability  hereunder  and shall not impair or affect  the  rights and  remedies,
whether  express,  implied or available as a matter of law, of SANO against PRI.
This Guarantee shall remain in full force and effect and be binding upon PRI and
its  successors  and  assigns  and shall  inure to the  benefit  of SANO and its
successors  and assigns,  until all the Guaranteed  Obligations  shall have been
satisfied by payment and performance in full.

         16.5 Reinstatement.  This Guarantee shall continue to be effective,  or
be reinstated, as the case may be, if at any time payment or performance, or any
part  thereof,  of  any of the  Guaranteed  Obligations  is  rescinded  or  must
otherwise  be  restored or  returned  by SANO upon the  insolvency,  bankruptcy,
dissolution, liquidation or reorganization of Par or PRI, or upon or as a result
of the  appointment of a receiver,  intervenor or conservator  of, or trustee or
similar  officer  for,  Par or PRI,  or any  substantial  part  of its or  their
property, or otherwise, all as though such payments had not been made.

         16.6 No Waiver;  Cumulative Remedies. SANO shall not by any act (except
by a written instrument pursuant to Section 15.7), delay,  indulgence,  omission
or otherwise  be deemed to have waived any right or remedy  hereunder or to have
acquiesced in any breach of any of the terms and  conditions of this  Agreement.
No failure to exercise,  nor any delay in  exercising,  on the part of SANO, any
right, power or privilege hereunder shall operate as a waiver thereof. No single
or partial  exercise of any right,  power or privilege  hereunder shall preclude
any other or further exercise thereof or the exercise of any other right,  power
or  privilege.  A waiver  by SANO of any right or  remedy  hereunder  on any one
occasion  shall not be  construed as a bar to any right or remedy which the SANO
would  otherwise  have on any future  occasion.  The rights and remedies  herein
provided are cumulative,  may be exercised  singly or  concurrently  and are not
exclusive of any rights or remedies provided by law.

         16.7 Affiliates.  To the extent that Par or PRI is obligated  hereunder
to cause its  Affiliates to do or refrain from doing  anything,  PRI will do all
things that it may lawfully and reasonably do to cause such Affiliate to comply.




                                       38
<PAGE>


         IN WITNESS WHEREOF, the parties have duly executed this Agreement as of
the Execution Date.

                                SANO CORPORATION

                                By: /s/Reginald Hardy
                                   -----------------------------------
                                         (Signature)
                                Name: Reginald Hardy
                                Title: President


                                PHARMACEUTICAL RESOURCES, INC.

                                By: /s/Kenneth I. Sawyer
                                   -----------------------------------  
                                         (Signature)
                                Name:   Kenneth I. Sawyer
                                Title:President and Chief Executive Officer


                                PAR PHARMACEUTICAL, INC.


                                By: /s/Kenneth I. Sawyer
                                   -----------------------------------  
                                        (Signature)
                                Name:  Kenneth I. Sawyer
                                Title:President and Chief Executive Officer


                                       39
<PAGE>



         CONFIDENTIAL INFORMATION OMITTED AND FILED SEPARATELY WITH THE
                       SECURITIES AND EXCHANGE COMMISSION
                         ASTERISKS DENOTE SUCH OMISSION

                                    EXHIBIT A


                                LICENSED PRODUCTS

Product A                                               Sano          FDA
Drug Name                                ANDA#        Filing Date  Accepted Date

Nitroglycerin Transdermal System         [****]        [****]        [****]
[****]*
Nitroglycerin Transdermal System         [****]        [****]        [****]
[****]*
Nitroglycerin Transdermal System         [****]        [****]        [****]
[****]*
Nitroglycerin Transdermal System         [****]        [****]        [****]
[****]*
Nitroglycerin Transdermal System         [****]        [****]        [****]
[****]*
Nitroglycerin Transdermal System         [****]        [****]        [****]
[****]*
*Generically equivalent to such strengths in Nitro Dur(R).

Product B                                         Sano              FDA
Drug Name                         ANDA#         Filing Date     Accepted Date

Nicotine Transdermal System       74-645        03/09/95          04/06/95
7 mg/day*
Nicotine Transdermal System       74-611        01/20/95          04/06/95
14 mg/day*
Nicotine Transdermal System       74-612        01/20/95          04/06/95
21 mg/day*
*Generically equivalent to such strengths in Habitrol(R).



                                       40
<PAGE>

         CONFIDENTIAL INFORMATION OMITTED AND FILED SEPARATELY WITH THE
                       SECURITIES AND EXCHANGE COMMISSION
                         ASTERISKS DENOTE SUCH OMISSION

                                    EXHIBIT B

         As used  herein,  the term "Net  Sales"  shall  mean the  gross  amount
invoiced  for sales of  Licensed  Product(s)  made by PRI or its  Affiliates  to
independent third parties,  reduced by the following to the extent that they are
properly  allocable to the quantity of Licensed  Product(s) so sold:  all trade,
quantity and cash discounts allowed;  credits or allowances  actually granted on
account of rejections;  returns, billing errors and retroactive price reductions
(including,  without  limitation,  shelf stock adjustments);  credits,  rebates,
chargeback rebates, fees, reimbursements or similar payments granted or given to
wholesalers  and  other  distributors,  buying  groups,  health  care  insurance
carriers,  governmental  agencies  and  other  institutions  in  respect  of the
purchase price;  freight,  transportation,  insurance or other delivery charges;
and  all  taxes  (except  income  taxes),  tariffs,  duties  and  other  similar
governmental  charges paid by the seller on sales of the Licensed Product(s) and
not reimbursed by the  purchaser.  "Gross Profit" shall mean (i) with respect to
Product A, the difference  between Net Sales for any amount of Product A and the
price paid to SANO  pursuant to Section  7.2 hereof with a good faith  effort by
SANO to reduce costs and (ii) with respect to Product B, the difference  between
Net Sales for any  amount of  Product B and the  lesser of (a) the price paid to
SANO  pursuant to Section 7.2 hereof with a good faith  effort by SANO to reduce
the costs thereof or (b) [****] per transdermal patch.

         Product  A.  During  the  term  of  the   Agreement,   the   Additional
Consideration payable to SANO with respect to Product A shall be [****] of Gross
Profit.  Payment  of  Additional  Consideration  is to be made in respect of the
third preceding month, as set forth in Section 11.1.

         The following illustrates payments to SANO under the foregoing formula,
assuming that sales of Product A commenced in January 1998:

<TABLE>
<CAPTION>
          JAN.    FEB.    MARCH    APRIL    MAY    JUNE    JULY   AUGUST    SEPT.   OCT.    NOV.    DEC.
          1998    1998    1998     1998     1998   1998    1998    1998     1998    1998    1998    1998

<S>       <C>     <C>     <C>     <C>      <C>     <C>     <C>    <C>      <C>      <C>     <C>     <C>
NET SALES [****]  [****]  [****]  [****]   [****]  [****]  [****] [****]   [****]

PRICE TO
  PRI     [****]  [****]  [****]  [****]   [****]  [****]  [****] [****]   [****]
          ------  ------  ------  ------   ------  ------  ------ ------   ------
GROSS
PROFIT    [****]  [****]  [****]  [****]   [****]  [****]  [****] [****]   [****]
          ------  ------  ------  ------   ------  ------  ------ ------   ------  ------  ------  ------  

PAYMENT
TO SANO   [****]  [****]  [****]  [****]   [****]  [****]  [****] [****]   [****]  [****]  [****]  [****]
          ------  ------  ------  ------   ------  ------  ------ ------   ------  ------  ------  ------

RETAINED
BY Par    [****]  [****]  [****]  [****]   [****]  [****]  [****] [****]   [****]  [****]  [****]  [****]
          ------  ------  ------  ------   ------  ------  ------ ------   ------  ------  ------  ------

</TABLE>
                                       41

<PAGE>


         CONFIDENTIAL INFORMATION OMITTED AND FILED SEPARATELY WITH THE
                       SECURITIES AND EXCHANGE COMMISSION
                         ASTERISKS DENOTE SUCH OMISSION



         Product  B.  During  the  term  of  the   Agreement,   the   Additional
Consideration  payable to SANO with  respect to Product B shall  be[****] of all
Gross Profit commencing  retroactively to January 1, 1998. Payment of Additional
Consideration  is to be made in respect  of the third  preceding  month,  as set
forth in Section  11.1.  The  following  illustrates  payments to SANO under the
foregoing formula, assuming that sales of Product B commenced in January 1998:

<TABLE>
<CAPTION>
          JAN.    FEB.    MARCH    APRIL    MAY    JUNE    JULY   AUGUST    SEPT.   OCT.    NOV.    DEC.
          1998    1998    1998     1998     1998   1998    1998    1998     1998    1998    1998    1998

<S>       <C>     <C>     <C>     <C>      <C>     <C>     <C>    <C>      <C>      <C>     <C>     <C>
NET SALES [****]  [****]  [****]  [****]   [****]  [****]  [****] [****]   [****]

PRICE TO
  PRI     [****]  [****]  [****]  [****]   [****]  [****]  [****] [****]   [****]
          ------  ------  ------  ------   ------  ------  ------ ------   ------
GROSS
PROFIT    [****]  [****]  [****]  [****]   [****]  [****]  [****] [****]   [****]
          ------  ------  ------  ------   ------  ------  ------ ------   ------  ------  ------  ------  

PAYMENT
TO SANO   [****]  [****]  [****]  [****]   [****]  [****]  [****] [****]   [****]  [****]  [****]  [****]
          ------  ------  ------  ------   ------  ------  ------ ------   ------  ------  ------  ------

RETAINED
BY Par    [****]  [****]  [****]  [****]   [****]  [****]  [****] [****]   [****]  [****]  [****]  [****]
          ------  ------  ------  ------   ------  ------  ------ ------   ------  ------  ------  ------

</TABLE>

                                       42
<PAGE>






                                    EXHIBIT C

                              [SALES SUMMARY FORM]





                                       43

                                                                   Exhibit 10.13



                         RELEASE AND AMENDMENT AGREEMENT

     This Release and Amendment Agreement (the "Agreement") is made this 1st day
of May  1998,  by and  between  Pharmaceutical  Resources,  Inc.,  a New  Jersey
corporation ("PRI"), Par Pharmaceutical, Inc., a New Jersey corporation ("Par"),
SANO Corporation, a Florida corporation ("SANO"), and Elan Corporation,  plc, an
Irish company of Lincoln House,  Lincoln Place, Dublin 2, Ireland (together with
its affiliates,  "ELAN").  All  capitalized  terms used herein and not otherwise
defined  herein  shall  have  the  meanings   ascribed  to  them  in  the  Prior
Distribution Agreement (as defined below).

                              W I T N E S S E T H:


     WHEREAS,  SANO,  PRI  and Par  are  parties  to the  Amended  and  Restated
Distribution  Agreement,  dated as of July 28,  1997  (the  "Prior  Distribution
Agreement");

     WHEREAS,  pursuant to the Prior  Distribution  Agreement,  PRI and Par have
exclusive   rights  to  distribute,   among  other  products,   the  transdermal
nitroglycerin  product (general  equivalent of Transderm  Nitro(R)) described as
Product C therein ("Product C"); and

     WHEREAS,  PRI and Par have  agreed  to  release  all of their  rights  with
respect to Product C to ELAN in consideration of the mutual agreements set forth
herein.

     NOW,  THEREFORE,  in  consideration  of the  premises  and  of  the  mutual
agreements set forth herein, the parties hereto agree as follows:

1.       Product  C  Release.   Subject  to  the  terms  and  conditions  hereof
         (including Sections 3 and 5(a) hereof),  PRI and Par hereby release and
         transfer  to ELAN all of their  rights  under  the  Prior  Distribution
         Agreement with respect to Product C (the "Product C Release").  Subject
         to Section 5(a) below,  SANO and ELAN hereby  acknowledge  that PRI and
         Par have no further  obligations or liabilities with respect to Product
         C.

2.       Product A Release.  Subject to Section  5(a)  hereof and Par's right of
         election set forth in Section 6 hereof,  PRI and Par hereby release and
         transfer  to ELAN all of their  rights  under  the  Prior  Distribution
         Agreement  with  respect  to  the  transdermal   nitroglycerin  product
         (generic  equivalent  of Nitro  Dur(R))  described as Product A therein
         ("Product  A").  Subject to Section  5(a)  below,  SANO and ELAN hereby
         acknowledge that PRI and Par have no further obligations or liabilities
         with respect to Product A.



<PAGE>


         CONFIDENTIAL INFORMATION OMITTED AND FILED SEPARATELY WITH THE
                       SECURITIES AND EXCHANGE COMMISSION
                         ASTERISKS DENOTE SUCH OMISSION


3.       Consideration.

         (a) The  aggregate  cash  consideration  for the Product C Release (the
         "Consideration") shall be the aggregate of (i) [****] in cash, (ii) the
         royalty payments  described in Section 4 below, (iii) all amounts owing
         under  the  promissory   note  attached  as  Exhibit  C  to  the  Prior
         Distribution  Agreement in the  principal  amount of  $1,953,393  (plus
         accrued  interest of $118,729 from July 28, 1997 to April 15, 1998 plus
         $454.90 per day until  payment of the  amounts due  pursuant to Section
         3(c)  hereof  is made),  plus (iv) all  amounts  owing  under  Sections
         13.14(a) and (c) of the Prior Distribution  Agreement (i.e., [****] and
         [****], respectively).

         (b) The Consideration specified in Section 3(a)(i) and (iv) above shall
         be payable by ELAN to Par in readily  available  funds in the form of a
         certified  check or wire transfer and shall be due and payable no later
         than five days from the date hereof.

         (c) The  Consideration  specified in Section  3(a)(iii)  above shall be
         payable  by SANO to Par in  readily  available  funds  in the form of a
         certified  check or wire transfer and shall be due and payable no later
         than five days from the date  hereof.  Upon  payment  of the  foregoing
         amount, Par shall return to SANO the original  promissory note referred
         to in Section 3(a)(iii) above, marked to reflect its cancellation.

4.       Royalty Payments. (a) ELAN shall pay Par royalty payments (the "Royalty
         Payments")  equal to [****] of all Net Sales of Product C following the
         date  hereof  by ELAN  and its  Affiliates  (and any  transferee(s)  or
         successor(s) of the rights to Product C) and/or, where applicable,  any
         distributors  and  licensees  thereof  (the  "Royalty  Parties") in the
         United  States (as  defined in the Prior  Distribution  Agreement)  and
         Israel.  Par  acknowledges  that it is not entitled to Royalty Payments
         from both ELAN and a  distributor  or  licensee  thereof  in respect of
         sales of the same units of Product C.

         (b)  As used herein,  the term "Net Sales" shall mean the gross amount
         invoiced  for  sales  of  Product  C made by  ELAN or any of the  other
         Royalty Parties to any  unaffiliated  wholesaler,  chain,  distributor,
         repackager, or buying or similar group for eventual sale reduced by the

                                       2
<PAGE>

         following  to the  extent  that  they  are  properly  allocable  to the
         quantity of Product C so sold:  all trade,  quantity and cash discounts
         allowed;   credits  or  allowances   actually  granted  on  account  of
         rejections;  returns,  billing errors and retroactive  price reductions
         (including,  without  limitation,  shelf stock  adjustments);  credits,
         rebates,  chargeback rebates, fees,  reimbursements or similar payments
         granted or given to wholesalers and other distributors,  buying groups,
         health  care  insurance  carriers,   governmental  agencies  and  other
         institutions in respect of the purchase price; freight, transportation,
         insurance  or other  delivery  charges;  and all taxes  (except  income
         taxes),  tariffs, duties and other similar governmental charges paid by
         the seller on sales of Product C and not reimbursed by the purchaser.

         (c)   Par's  rights  to the  Royalty  Payments  shall be  irrevocable,
         perpetual,  unconditional  and,  subject to the last  sentence  of this
         subsection (c), not subject to offset for any reason.  Royalty Payments
         shall be payable  quarterly on the 60th day  following  the end of each
         calendar  quarter.  ELAN reserves the right to deduct before  effecting
         payment  to Par the amount of any  taxation  it is  required  by law to
         withhold  from Par in respect of the payment of royalties due hereunder
         to Par.  In the event of any such  deduction,  ELAN  shall  secure  and
         furnish promptly to Par official tax receipts evidencing the payment of
         such taxation.

         (d)  ELAN shall  deliver to Par  quarterly,  on the 60th day following
         the end of each calendar quarter,  a sales summary showing all sales of
         Product C made by ELAN and/or,  where applicable,  by the other Royalty
         Parties during the immediately  preceding calendar quarter, a statement
         certifying its  calculation of the Net Sales from gross revenues during
         such calendar  quarter,  the units of Product C sold, and a computation
         of the amounts due to Par.

         (e)   Subject  to any  contractual  obligation  of ELAN  to the  other
         Royalty  Parties,  ELAN shall make  available for  inspection by Par at
         ELAN's  facilities  such  additional  information  concerning any sales
         and/or any other information provided pursuant to Section 4(d) above as
         Par may  reasonably  request from time to time to enable Par to confirm
         or  reconcile  the  amounts  which  are or were to have been paid to it
         pursuant  to this  Agreement  (without  the need to audit the books and
         records of ELAN pursuant to Section 4(f) hereof).

         (f)   ELAN shall  keep  complete  and  accurate  records  and books of
         account  containing all  information  required for the  computation and
         verification  of  the  amounts  to be  paid  to  Par.  Subject  to  any
         contractual  obligations  of ELAN to the other  Royalty  Parties,  ELAN
         further  agrees  that at the request of Par, it will permit one or more
         accountants  selected  by  Par,  except  any  to  whom  ELAN  has  some
         reasonable objection, at any time and from time to time, to have access
         during  ordinary  working  hours to such records as may be necessary to
         audit,  with respect to any payment  report period ending prior to such
 
                                      3
<PAGE>

         request,  the  correctness  of any  report or  payment  made under this
         Agreement, or to obtain information as to the payments due for any such
         period  in the  case  of  failure  of ELAN to  report  or make  payment
         pursuant  to the terms of this  Agreement.  Such  accountant  shall not
         disclose to Par any information relating to the business of ELAN except
         that which is reasonably necessary to inform Par of:

              (i) the accuracy or inaccuracy of ELAN's reports and payments;

              (ii)  compliance  or  non-compliance  by ELAN  with the  terms and
         conditions of this Agreement; and

              (iii)  the  extent  of  any  such  inaccuracy  or  non-compliance;
         provided, that if it is not reasonably possible to separate information
         relating  to the  business  of  ELAN  from  that  which  is  reasonably
         necessary to so inform Par, the accountant may disclose any information
         necessary to so inform Par and Par shall  retain all other  information
         disclosed as confidential.

                  ELAN shall provide full and complete  access to the accountant
         to ELAN's pertinent books and records and the accountant shall have the
         right to make and retain  copies  (including  photocopies).  Should any
         such accountant discover  information  indicating  inaccuracy in any of
         ELAN's  payments  or  non-compliance  by ELAN and  should  ELAN fail to
         acknowledge  in  writing  to  Par  the  deficiency  or   non-compliance
         discovered  by such  accountant  within ten (10) business days of being
         advised of same in writing by the accountant, the accountant shall have
         the right to  deliver  to Par  copies  (including  photocopies)  of any
         pertinent  portions of the records and books of account which relate to
         or  disclose  the  deficiency  or  non-compliance  (to the  extent  not
         acknowledged  by ELAN).  In the event  that the  accountant  shall have
         questions  which  are not in its  judgment  answered  by the  books and
         records  provided to it, the accountant  shall have the right to confer
         with officers of ELAN, including ELAN's Chief Financial Officer. If any
         audit under this Section shall reveal an underpayment or understatement
         of the amount  payable to Par by more than  $5,000.00 for any period in
         question,  ELAN shall reimburse Par for all costs and expenses relating
         to such  investigational  audit. Par shall only have the right to audit
         such books and records of ELAN  pursuant to this  Section  4(f) no more
         often than twice in any contract  year unless  earlier in such contract
         year or in any of the prior  three  contract  years such  investigation
         revealed a discrepancy of more than $5,000.00,  as aforesaid,  in which
         case Par shall  have the right to audit such  books and  records  three
         times in such contract year. For purposes of this Agreement, a contract
         year shall be a period of twelve  months  commencing on either the date
         of this Agreement or on an anniversary  thereof.  Unless the disclosure
         of same is reasonably required by Par in connection with any litigation
         or  arbitration  arising out of such audit,  the  accountant  shall not
         reveal  to Par the name or  address  (or other  information  reasonably
         tending to identify  the  location of a  customer)  of any  customer of
         ELAN,  but shall  identify such  customer to Par, if necessary,  by the
         customer code number used by ELAN in its reporting  obligations  to Par
         and ELAN shall make such information known to the accountant. ELAN may,
         as a condition  to  providing  any  accountant  access to its books and
         records, require Par to execute a reasonable  confidentiality agreement
         consistent  with the  terms  of this  Section  4(f).  
 
                                      4
<PAGE>

         (g)  Except as specifically set forth to the contrary, all payments to
         be made under this  Agreement  shall  bear  interest  equal to two (2%)
         percent above the prime rate as quoted by Citibank  N.A., New York, New
         York,  calculated  daily (as at the close of business on each such day)
         and compounded  monthly,  from the day following the day the payment is
         due until  the date on which it is paid.  Any  adjustment  to the prime
         rate as quoted by  Citibank  N.A.  from time to time shall  result in a
         corresponding adjustment to the rate of interest payable hereunder, the
         rate of interest  quoted by  Citibank  N.A. at the close of business on
         each day to be the rate applicable for such day.

         (h)  ELAN shall have sole  discretion  in setting  the sales price for
         the sale of  Product  C,  provided  that ELAN  shall  not  specifically
         discount  the  price of  Product  C for the  benefit  of  ELAN's  other
         products or to otherwise use Product C as a loss leader or incentive to
         procure the sale of ELAN's other  products.  Rebate and other  discount
         programs  (excluding  any  program  where  the  price of  Product  C is
         discounted  primarily  for the benefit of enhancing  the sale of ELAN's
         other products) generally available to ELAN's customers on the purchase
         of  pharmaceutical  products  shall not be  prohibited  by this Section
         4(h),  provided that such programs shall be in accordance with industry
         standards for comparable  products and shall be designed to promote the
         sale of Product C and no other products.

         (i)  ELAN shall use its reasonable  efforts to cause the other Royalty
         Parties to comply with the  provisions  of this  Section 4,  including,
         without  limitation,  to provide  such  information  as is necessary to
         confirm that all  necessary  royalty  payments  shall have been made to
         Par.

5.       Amendment to the Prior Distribution Agreement.

         (a) The Prior  Distribution  Agreement shall be amended and restated as
         set forth in the Amended and Restated Distribution  Agreement,  of even
         date herewith,  by and among SANO, PRI and Par, in the form attached as
         Exhibit A hereto (the "Amended  Distribution  Agreement").  The Amended
         Distribution   Agreement   shall   replace  and   supersede  the  Prior
         Distribution  Agreement in its entirety;  provided,  however,  that any
         agreements  relating to or in  connection  with  Product C or Product A
         which,  pursuant  to the  terms of the  Prior  Distribution  Agreement,
         survive  termination  of the Prior  Distribution  Agreement,  including
         indemnification  obligations,  shall remain in effect on the same terms
         and conditions as provided therein.


                                       5
<PAGE>

         (b)   Notwithstanding  any  references  in  the  Amended  Distribution
         Agreement  to Product A, the term  "Licensed  Product"  in the  Amended
         Distribution  Agreement  shall not include Product A and the provisions
         thereof  shall not apply to Product A,  unless and until PRI  exercises
         its right of election set forth in Section 6 below.


         CONFIDENTIAL INFORMATION OMITTED AND FILED SEPARATELY WITH THE
                       SECURITIES AND EXCHANGE COMMISSION
                         ASTERISKS DENOTE SUCH OMISSION


6.       Right of Election.  In the event that ELAN obtains ANDA approval by the
         FDA covering  Product A, PRI shall have the right to elect,  by written
         notice to ELAN and the payment to ELAN of [****],  to include Product A
         as a "Licensed  Product".  In the event that PRI,  makes such election,
         the provisions of the Amended Distribution Agreement will be reinstated
         with respect to Product A on the terms and conditions  provided therein
         as of the date hereof.

7.       Notices.  Any  notice  required  or  permitted  to be given  under this
         Agreement  shall be  sufficiently  given if in writing and delivered by
         registered  or certified  mail (return  receipt  requested),  facsimile
         (with   confirmation   of   transmittal),   overnight   courier   (with
         confirmation of delivery), or hand delivery to the appropriate party at
         the address set forth below, or to such other address as such party may
         from time to time specify for that purpose in a notice similarly given:

                If to SANO:

                       SANO Corporation
                       3250 Commerce Parkway
                       Miramar, Florida 33025
                       Attn: President
                       Fax: (954) 430-3390

                with a copy to (other than regularly prepared notices, reports, 
                etc. required to be delivered hereunder):

                       Greenberg, Traurig, Hoffman,
                       Lipoff, Rosen & Quentel, P.A.
                       1221 Brickell Avenue
                       Miami, Florida 33131
                       Attn: Gary Epstein, Esq.
                       Fax: 305-579-0717

                If to ELAN:

                       Elan Corporation, plc
                       Lincoln House
                       Lincoln Place
                       Dublin 2, Ireland
                       Attn: Vice President and General Counsel
                       Elan Pharmaceutical Technologies, a division of
                       Elan Corporation, plc
                       Fax: (011) 353-1-662-4960

                                       6
<PAGE>

                If to PRI or Par:

                       c/o PRI Distributors, Ltd.
                       One Ram Ridge Road
                       Spring Valley, NY 10977
                       Attn: President
                       Fax: 914-425-7922

                with a copy to (other than regularly prepared notices, reports,
                etc. required to be delivered hereunder):

                       Hertzog, Calamari & Gleason
                       100 Park Avenue
                       New York, New York 10017
                       Attn:  Stephen A. Ollendorff, Esq. and
                       Stephen R. Connoni, Esq.
                       Fax:  (212) 213-1199

         Any such notice shall be effective  (i) if sent by mail (or in the case
         of notice to or by ELAN by  registered  airmail),  as  aforesaid,  five
         business days after mailing,  (ii) if sent by facsimile,  as aforesaid,
         when  sent,  and  (iii)  if  sent by  courier  or  hand  delivered,  as
         aforesaid,  when received.  Provided that if any such notice shall have
         been sent by mail and if on the date of  mailing  thereof or during the
         period prior to the expiry of the third business day following the date
         of mailing  there shall be a general  postal  disruption  (whether as a
         result of rotating strikes or otherwise) in the United States then such
         notice  shall  not  become  effective  until  the  fifth  business  day
         following the date of resumption of normal mail service.


                                       7
<PAGE>


8.       Governing Law and Consent to Jurisdiction.

         (a) Except as otherwise provided herein, this Agreement shall be deemed
         to have been made  under,  and shall be  governed  by,  the laws of the
         State of Florida in all  respects  including  matters of  construction,
         validity and performance, but without giving effect to Florida's choice
         of law provisions.

         (b) In  connection  with any action  commenced  hereunder,  each of the
         undersigned  consent  to the  exclusive  jurisdiction  of the state and
         federal  courts  located  in  Miami,   Florida.   Notwithstanding   the
         foregoing,  each party  also  agrees to the  jurisdiction  of any court
         which a third party claim has been brought.

9.       Binding  Agreement.  This  Agreement  shall be binding upon the parties
         hereto, and their respective successors and permitted assigns.

10.      Counterparts.  This  Agreement  may be executed in identical  duplicate
         copies.  The parties agree to execute at least two  identical  original
         copies of the Agreement.  Each identical counterpart shall be deemed an
         original,  but all of which together shall  constitute one and the same
         instrument.

11.      Severability of Provisions.  If, for any reason  whatsoever,  any term,
         covenant or  condition of this  Agreement  or of any other  document or
         instrument executed and delivered by either Par or ELAN pursuant hereto
         or in connection  with the completion of the  transaction  contemplated
         herein,  or the application  thereof to any party or circumstance is to
         any extent held or rendered  invalid,  unenforceable  or illegal,  then
         such term, covenant or condition:

                  (i) is  deemed  to be  independent  of the  remainder  of such
                  document and to be severable and  divisible  therefrom and its
                  validity,  unenforceability  or  illegality  does not  affect,
                  impair or  invalidate  the  remainder of such  document or any
                  part thereof; and

                  (ii) continue to be applicable and  enforceable to the fullest
                  extent  permitted  by law against any party and  circumstances
                  other  than  those as to which  it has been  held or  rendered
                  invalid, unenforceable or illegal.

12.      Entire   Agreement.   This   Agreement,   together   with  the  Amended
         Distribution Agreement,  represents the entire agreement of the parties
         with  respect  to the  subject  matter  hereof,  superseding  all prior
         agreements and understandings, written or oral.

                                       8
<PAGE>

                  IN WITNESS WHEREOF,  this Release and Amendment  Agreement has
been  executed and  delivered  by the parties  hereto as of the date first above
written.

                            PHARMACEUTICAL RESOURCES, INC.
 


                           By: /s/Kenneth I. Sawyer
                              --------------------------------------
                              Name: Kenneth I. Sawyer
                              Title:   President and Chief Executive Officer

                           PAR PHARMACEUTICAL, INC.


                           By: /s/Kenneth I. Sawyer
                               --------------------------------------
                               Name: Kenneth I. Sawyer
                               Title: President and Chief Executive Officer

                           SANO CORPORATION


                           By: /s/Reginald Hardy
                              --------------------------------------
                              Name: Reginald Hardy
                              Title:   President

                           ELAN CORPORATION, PLC


                           By: /s/Thomas G. Lynch
                              --------------------------------------
                              Name: Thomas G. Lynch
                              Title:   Executive Vice President and
                                       Chief Financial Officer



                                       9




                                                                   Exhibit 10.14

Contact:
Kenneth I. Sawyer
Chairman and Chief Executive Officer
Pharmaceutical Resources, Inc.
(914) 425-7100

FOR IMMEDIATE RELEASE


                         PHARMACEUTICAL RESOURCES, INC.
             ANNOUNCES SHAREHOLDERS APPROVE STRATEGIC ALLIANCE WITH
                                   MERCK KGaA

     Spring Valley,  New York, June 26, 1998 -- Pharmaceutical  Resources,  Inc.
(NYSE/PSE:PRX)   announced  today  that  its  shareholders   have  approved  the
previously-announced  strategic  alliance with Merck KGaA,  Darmstadt,  Germany.
Merck KGaA is a German pharmaceutical,  laboratory and chemical company. Subject
to the  satisfaction  of certain  conditions,  the closing of the transaction is
expected to occur next week.

     At the Company's  Annual Meeting of  Shareholders  held today,  62 % of the
outstanding  shares were voted in favor of the sale of  10,400,000  newly-issued
shares to Lipha Americas,  Inc.  ("Lipha"),  a subsidiary of Merck KGaA, and the
issuance to Merck KGaA and another of its  subsidiaries of five-year  options to
purchase an aggregate of 1,171,040  shares of the  Company's  common stock at an
exercise  price of $2 per  share  in  exchange  for  consulting  services  to be
provided to the Company.  A total of 1% of outstanding  shares voted against the
stock sale and option issuance.

     Also at the  Annual  Meeting,  shareholders  elected  all  seven  directors
proposed by the  Company's  Board of  Directors,  including  the four  directors
designated  by Lipha.  Under the stock  purchase  agreement  signed on March 25,
1998,  Lipha has the right to  designate  a majority of the  Company's  Board of
Directors.  Shareholders  also voted to increase the number of authorized common
shares from 60,000,000 to 90,000,000.

     Kenneth I.  Sawyer,  Chairman and Chief  Executive  Officer of the Company,
commented "Today,  the shareholders of the Company  overwhelmingly  approved our
strategic alliance with Merck KGaA and endorsed our plan for the future. We look
forward to closing the  transaction  shortly and are excited  about working with
Merck KGaA to build a profitable generic pharmaceutical company."

     Merck KGaA is a German  specialty  pharmaceutical,  laboratory and chemical
company  with  sales of $4.4  billion,  and  29,000  employees  in 47  countries
worldwide. Its pharmaceutical sales of $2.5 billion consists mainly of ethicals,
generics, contrastmedia and OTC products.

     Pharmaceutical  Resources, Inc. is a holding company with subsidiaries that
develop,  manufacture and distribute  generic  pharmaceuticals  products.  PRI's
principal  subsidiary,  Par Pharmaceutical,  located in Spring Valley, New York,
manufactures  and  distributes  various dosage  strengths of  approximately  100
products.

                                      # # #



                                                        Exhibit 10.15

Contact:
Kenneth I. Sawyer
Chairman and Chief Executive Officer
Pharmaceutical Resources, Inc.
(914) 425-7100


FOR IMMEDIATE RELEASE


                         PHARMACEUTICAL RESOURCES, INC.
             COMPLETES PREVIOUSLY ANNOUNCED STRATEGIC ALLIANCE WITH
                                   MERCK KGaA

     Spring Valley,  New York, June 30, 1998 -- Pharmaceutical  Resources,  Inc.
(NYSE/PSE:PRX)  announced  today that it has completed the previously  announced
strategic alliance with Merck KGaA, Darmstadt,  Germany.  Merck KGaA is a German
pharmaceutical,  laboratory  and  chemical  company.  Merck  KGaA,  through  its
subsidiary   Lipha  Americas,   Inc.   ("Lipha"),   purchased  today  10,400,000
newly-issued  shares from the Company.  In addition,  Merck KGaA today purchased
1,813,272  shares  of  the  Company's  common  stock  from  Clal  Pharmaceutical
Industries  Ltd.  ("Clal"),  the  Company's  largest  stockholder  prior to this
transaction.  As a result of the stock  purchases  today,  Merck  KGaA has a 42%
stake in Pharmaceutical Resources.

     The cash purchase price of $2 per share provides  Pharmaceutical  Resources
with $20.8  million  for  investment  in its  continuing  business.  The Company
intends to use approximately  $3.6 million of the net proceeds of the stock sale
to repay advances made to it under its existing line of credit and the remainder
will be used for working capital, including business expansion.

     Today,  the Company also issued to Merck KGaA and its Canadian  subsidiary,
Genpharm  Inc.  ("Genpharm"),  five-year  options to  purchase an  aggregate  of
1,171,040  shares of the Company's  common stock at an exercise  price of $2 per
share in exchange for  consulting  services to be provided to the  Company.  The
Company's shareholders approved the stock sale and option issuance at the Annual
Meeting of Shareholders held on June 26, 1998.

     Kenneth I.  Sawyer,  Chairman and Chief  Executive  Officer of the Company,
commented  "We are  excited  about the  future of the  Company  now that we have
consummated our strategic alliance with Merck KGaA. The cash from the stock sale
together with the  previously  announced  Distribution  Agreement  with Genpharm
granting Pharmaceutical  Resources the right to distribute the numerous products
identified  for both  near and long term  development  gives us the  ability  to
achieve our goal of becoming a profitable generic company".


<PAGE>

                                     - more-

     Merck KGaA is a German specialty  pharmaceuticals,  laboratory and chemical
company  with  sales of $4.4  billion,  and  29,000  employees  in 47  countries
worldwide. Its pharmaceutical sales of $2.5 billion consists mainly of ethicals,
generics,  contrastmedia  and OTC products.  Within the Ethicals  Division Merck
spends more than 20% of its sales on R&D and has core research  expertise in CV,
CNS, oncology and metabolic disease.  Merck KGaA owns Merck-Lipha S.A., a French
ethical and generic pharmaceutical company, which owns Dey Laboratories, L.P., a
U.S. generic pharmaceutical company located in Napa Valley, California.

     Pharmaceutical  Resources, Inc. is a holding company with subsidiaries that
develop,  manufacture and distribute  generic  pharmaceuticals  products.  PRI's
principal  subsidiary,  Par Pharmaceutical,  located in Spring Valley, New York,
manufactures  and  distributes  various dosage  strengths of  approximately  100
products.

                                      # # #



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