INTERNEURON PHARMACEUTICALS INC
DEF 14A, 1997-01-28
PHARMACEUTICAL PREPARATIONS
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                                  SCHEDULE 14A
                                 (RULE 14A-101)
                     INFORMATION REQUIRED IN PROXY STATEMENT

                            SCHEDULE 14A INFORMATION
                    PROXY STATEMENT PURSUANT TO SECTION 14(A)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

Filed by the Registrant [X] 
Filed by a party other than the Registrant [ ] 

Check the appropriate box:
- - - - - - --------------------------

        [ ] Preliminary proxy statement           
        [X] Definitive proxy statement
        [ ] Definitive additional materials
        [ ] Soliciting material pursuant to Rule 14a-11(c) or Rule 14a-12

                                     [ ] Confidential for Use of the Commission
                                         Only (as permitted by Rule 14a-6(e)(2))


                       Interneuron Pharmaceuticals, Inc.
                       ---------------------------------
                (Name of Registrant as Specified in Its Charter)

     ----------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of filing fee (Check the appropriate box):

         [X]  No fee required .

         [ ]  Fee  computed  on  table  below per Exchange Act Rules 14a-6(i)(4)
              and 0-11.

         (1)  Title of each class of securities to which transaction applies:

         (2)  Aggregate number of securities to which transaction applies:

         (3)  Per  unit  price or other underlying value of transaction computed
              pursuant  to  Exchange  Act  Rule  0-11 (set  forth the  amount on
              which  the  filing  fee  is  calculated   and  state  how  it  was
              determined):

         (4)  Proposed maximum aggregate value of transaction:

         (5)  Total fee paid:

         [ ]  Fee paid previously with preliminary materials.

         [ ]  Check box if any part of the fee is offset as provided by Exchange
              Act  Rule  0-11(a)(2)  and  identify  the  filing  for  which  the
              offsetting fee was paid  previously.  Identify the previous filing
              by registration  statement number, or the form or schedule and the
              date of its filing.

         (1)  Amount previously paid:

         (2)  Form, schedule or registration statement no.:

         (3)  Filing party:

         (4)  Date filed:






                        INTERNEURON PHARMACEUTICALS, INC.
                              One Ledgemont Center
                                99 Hayden Avenue
                         Lexington, Massachusetts 02173
                    NOTICE OF ANNUAL MEETING OF STOCKHOLDERS
                            To be held March 5, 1997

To the Stockholders:

         Notice is hereby given that the Annual Meeting of the  Stockholders  of
Interneuron Pharmaceuticals, Inc. (the "Company") will be held on March 5, 1997,
at 10:00 a.m. local time at The Westin Hotel, First Floor, Eden Vale Ballroom C,
70 Third Avenue, Waltham,  Massachusetts 02154. The Annual Meeting is called for
the following purposes:

         1. To elect a board of ten directors;

         2. To approve  and  ratify a  proposed  amendment  to the  Amended  and
Restated  Certificate of Incorporation of the Company increasing from 60,000,000
to 80,000,000 the number of authorized shares of Common Stock;

         3. To approve and ratify an amendment to the Company's  1994  Long-Term
Incentive Plan, as amended, increasing from 3,000,000 to 6,000,000 the number of
shares of Common Stock reserved for issuance;

         4. To approve and ratify the appointment of Coopers & Lybrand L.L.P. as
the independent auditors of the Company; and

         5. To consider and take action upon such other  matters as may properly
come before the meeting or any adjournment or adjournments thereof.

         The close of  business on January 23, 1997 has been fixed as the record
date for the  determination  of stockholders  entitled to notice of, and to vote
at, the Annual  Meeting.  The stock  transfer  books of the Company  will not be
closed.

         All  stockholders  are cordially  invited to attend the Annual Meeting.
Whether or not you expect to attend, you are respectfully requested by the Board
of Directors to sign, date and return the enclosed proxy promptly.  Stockholders
who  execute  proxies  retain the right to revoke  them at any time prior to the
voting  thereof.  A return  envelope  which requires no postage if mailed in the
United States is enclosed for your convenience.

                                       By Order of the Board of Directors,

                                       Glenn L. Cooper, M.D.,
                                       President and Chief Executive Officer

Dated: January 28, 1997








                        INTERNEURON PHARMACEUTICALS, INC.
                              One Ledgemont Center
                                99 Hayden Avenue
                         Lexington, Massachusetts 02173
                                 (617) 861-8444

                                   -----------

                                 PROXY STATEMENT

                                   -----------

                         ANNUAL MEETING OF STOCKHOLDERS

         This Proxy Statement is furnished in connection  with the  solicitation
of proxies by the Board of Directors  of  Interneuron  Pharmaceuticals,  Inc., a
Delaware corporation (the "Company"),  for the Annual Meeting of Stockholders to
be held at The Westin Hotel, First Floor, Eden Vale Ballroom C, 70 Third Avenue,
Waltham,  Massachusetts  02154 on  March 5,  1997,  at  10:00  a.m.  and for any
adjournment  or  adjournments  thereof,  for  the  purposes  set  forth  in  the
accompanying  Notice of Annual Meeting of Stockholders.  Any stockholder  giving
such a proxy has the power to revoke it at any time before it is voted.  Written
notice of such  revocation  should be forwarded  directly to the Vice President,
Corporate Communications of the Company, at the above stated address. Attendance
at the Annual Meeting will not have the effect of revoking the proxy unless such
written  notice  is  given or the  stockholder  votes by  ballot  at the  Annual
Meeting.

         If the enclosed  proxy is properly  executed and  returned,  the shares
represented  thereby will be voted in accordance with the directions thereon and
otherwise in accordance with the judgment of the persons  designated as proxies.
Any  proxy on  which no  direction  is  specified  will be voted in favor of the
actions  described  in this  Proxy  Statement,  including  the  election  of the
nominees set forth under the caption  "Election of Directors",  the approval and
ratification of a proposed amendment to the Amended and Restated  Certificate of
Incorporation (the "Certificate"), the approval and ratification of an amendment
to the 1994  Long-Term  Incentive  Plan, as amended (the "1994  Plan"),  and the
approval and  ratification of the appointment of Coopers & Lybrand L.L.P. as the
independent auditors of the Company.

         The approximate date on which this Proxy Statement and the accompanying
form of proxy will  first be mailed or given to the  Company's  stockholders  is
January 28, 1997.

         Your vote is important.  Accordingly,  you are urged to sign and return
the  accompanying  proxy  card  whether  or not you plan to  attend  the  Annual
Meeting. If you do attend, you may vote by ballot at the Annual Meeting, thereby
cancelling any proxy previously given.







                                VOTING SECURITIES

         Holders  of shares  of Common  Stock,  par value  $.001 per share  (the
"Shares"),  and holders of shares of Series B and Series C Convertible Preferred
Stock,  par value $.001 per share (the  "Preferred  Shares") of record as of the
close of business on January 23, 1997,  are entitled to notice of and to vote at
the Annual  Meeting on all  matters  except  that the  holders of the  Preferred
Shares are not entitled to vote for the election of  directors.  For purposes of
voting at the Annual  Meeting on all matters  except the election of  directors,
the Preferred Shares are treated as converted into Shares.  Accordingly,  on the
record date there were issued and outstanding (i) 41,073,297  Shares entitled to
vote for the election of directors,  and (ii) an aggregate of 41,695,519 Shares,
including  622,222 Shares  issuable upon  conversion of the 244,425 Series B and
Series C Preferred  Shares,  voting as one class,  entitled to vote on all other
matters.  Each outstanding  Share is entitled to one vote upon all matters to be
acted upon at the Annual Meeting.  A majority of the outstanding Shares entitled
to vote on any matter  and  represented  at the  Annual  Meeting in person or by
proxy shall constitute a quorum.  Assuming a quorum is present,  the affirmative
vote of a plurality of the 41,073,297 Shares so represented and entitled to vote
is necessary to elect the directors,  and the affirmative  vote of a majority of
the 41,695,519  Shares so  represented  and entitled to vote,  excluding  broker
non-votes,  is  necessary  to approve and ratify the  proposed  amendment to the
Certificate,  the  amendment to the 1994 Plan and the  appointment  of Coopers &
Lybrand  L.L.P.  as the  independent  auditors of the Company.  Abstentions  and
broker non-votes are counted for purposes of determining the presence or absence
of a quorum for the transaction of business. If a stockholder, present in person
or by proxy,  abstains on any matter, the stockholder's Shares will not be voted
on such matter. Thus, an abstention from voting on any matter has the same legal
effect as a vote "against" the matter, even though the stockholder may interpret
such action  differently.  Except for  determining  the presence or absence of a
quorum for the transaction of business, broker non-votes are not counted for any
purpose in determining whether a matter has been approved.

                             PRINCIPAL STOCKHOLDERS

         Set  forth  below is  information  concerning  stock  ownership  of all
persons  known by the  Company to own  beneficially  5% or more of the Shares or
Preferred Shares,  each director,  each executive officer named under "Executive
Compensation" and all directors and executive officers of the Company as a group
based upon the number of outstanding  Shares and Preferred  Shares as of January
23, 1997.

                                       Amount &
  Name of                           Nature of Bene-             Percent of
Stockholder                       ficial Ownership(1)      Outstanding Class(15)
- - - - - - -----------                       -------------------      ---------------------

Lindsay A. Rosenwald, M.D.            2,580,152(2)                  6.3%

Glenn L. Cooper, M.D.                   766,488(3)                  1.8%



                                      - 2 -





Mark S. Butler                          420,500(4)                  1.0%

Thomas F. Farb                          133,406(5)                 *

Bobby W. Sandage, Jr., Ph.D.            305,277(6)                 *

Harry J. Gray                            38,250(7)                 *

Alexander M. Haig, Jr.                  203,000(8)                 *

Peter Barton Hutt                        38,250(7)                 *

Malcolm Morville, Ph.D.                  50,750(9)                 *

Robert K. Mueller                        50,750(9)                 *

Lee J. Schroeder                         50,750(9)                 *

David B. Sharrock                       50,250(10)                 *

Richard Wurtman, M.D.                  927,351(11)                  2.3%

J. Morton Davis                     10,799,458(12)                 26.3%
c/o D.H. Blair Investment
   Banking Corp.
44 Wall Street
New York, New York 10005

American Home Products Corp.           244,425(13)                  100%
Five Giralda Farms
Madison, New Jersey 07940

All directors and executive          5,615,174(14)                 13.0%
officers as a group (13 persons)

- - - - - - -----------
*less than 1%

(1)     Beneficial  ownership  is  defined in  accordance  with the rules of the
        Securities and Exchange  Commission  ("S.E.C.") and generally  means the
        power to vote  and/or to dispose  of the  securities  regardless  of any
        economic interest therein.

(2)     Includes (i) 7,671 Shares issuable upon exercise of outstanding warrants
        and (ii) 60,000 Shares  issuable  upon  exercise of options  exercisable
        within 60 days, but excludes (i)


                                      - 3 -





        100,000  Shares   issuable  upon  exercise  of  options  which  are  not
        exercisable within 60 days, (ii) 658,481 Shares owned by Dr. Rosenwald's
        wife, as to which Shares Dr. Rosenwald disclaims  beneficial  ownership,
        and (iii) 37,800 Shares owned by two limited  partnerships,  the limited
        partners of which include Dr. Rosenwald's wife and children, as to which
        Shares Dr. Rosenwald disclaims beneficial ownership.

(3)     Includes (i) 6,488 Shares and (ii) 760,000 Shares issuable upon exercise
        of options  exercisable  within 60 days, but excludes (i) 560,000 Shares
        issuable upon exercise of options  which are not  exercisable  within 60
        days and (ii) 45,000  Shares  issuable upon exercise of options owned by
        Dr.  Cooper's  wife as to which Shares Dr. Cooper  disclaims  beneficial
        ownership.

(4)     Includes  (i) 7,500  Shares,  (ii) 3,000  Shares  owned by Mr.  Butler's
        children,  and (iii)  410,000  Shares  issuable upon exercise of options
        exercisable  within 60 days, but excludes  310,000 Shares  issuable upon
        exercise of options which are not exercisable within 60 days.

(5)     Includes (i) 2,240 Shares and (ii) 131,666 Shares issuable upon exercise
        of options  exercisable  within 60 days,  but  excludes  418,334  Shares
        issuable upon exercise of options  which are not  exercisable  within 60
        days.

(6)     Includes (i) 1,527 Shares and (ii) 303,750 Shares issuable upon exercise
        of options  exercisable  within 60 days,  but  excludes  291,250  Shares
        issuable upon exercise of options  which are not  exercisable  within 60
        days.

(7)     Represents Shares issuable upon exercise of options  exercisable  within
        60 days,  but excludes  13,750 Shares  issuable upon exercise of options
        which are not exercisable within 60 days.

(8)     Includes (i) 202,500  Shares and (ii) 750 Shares  issuable upon exercise
        of  options  exercisable  within  60 days,  but  excludes  1,250  Shares
        issuable upon exercise of options  which are not  exercisable  within 60
        days.

(9)     Represents Shares issuable upon exercise of options  exercisable  within
        60 days,  but excludes  1,250 Shares  issuable  upon exercise of options
        which are not exercisable within 60 days.

(10)    Represents Shares issuable upon exercise of options  exercisable  within
        60 days,  but excludes  50,750 Shares  issuable upon exercise of options
        which are not exercisable within 60 days.

(11)    Includes  (i) 830,259  Shares  owned by Dr.  Wurtman,  (ii) 1,342 Shares
        owned by Dr.  Wurtman's  adult  son,  who has  granted  Dr.  Wurtman  an
        irrevocable  proxy to vote such Shares and (iii) 95,750 Shares  issuable
        upon exercise of options exercisable within


                                      - 4 -





        60 days,  but  excludes,  (i) 45,000 Shares held in a trust of which Dr.
        Wurtman is the sole  beneficiary,  (ii)  101,250  Shares  issuable  upon
        exercise of options which are not exercisable  within 60 days, and (iii)
        83,218 Shares owned by Judith Wurtman,  Dr.  Wurtman's wife, as to which
        Dr. Wurtman disclaims beneficial ownership.

(12)    Includes (i) 1,043,500  Shares owned by J. Morton Davis;  (ii) 8,772,993
        Shares owned by D.H. Blair Investment  Banking Corp.  ("Blair  Banking")
        which is owned by J. Morton  Davis;  (iii)  321,500  Shares owned by Mr.
        Davis' wife;  (iv)  657,865  Shares  owned by Rivkalex  Corp.,  the sole
        stockholder of which is Mr. Davis' wife; and (v) 247,500 Shares owned by
        Engex,  Inc., a closed-end  investment company of which Mr. Davis is the
        Chairman  of the Board and Blair  Banking  is the  largest  stockholder.
        Blair Banking and Mr. Davis disclaim beneficial  ownership of the Shares
        owned by Mr. Davis' wife and Rivkalex.

        Excludes (i) an  aggregate  of 2,665,424  Shares owned by the four adult
        children  (including  the wife of Dr.  Rosenwald) of Mr. Davis;  (ii) an
        aggregate of 286,599 Shares owned by  sons-in-law of Mr. Davis,  who are
        officers of D.H. Blair & Co., Inc.  ("Blair"),  a company  substantially
        owned by family  members  (including  the wife of Dr.  Rosenwald) of Mr.
        Davis;  (iii) 91,250 Shares owned  jointly by two adult  children of Mr.
        Davis and their  respective  spouses,  who are  officers of Blair;  (iv)
        37,800 Shares owned by two limited partnerships, the limited partners of
        which are family  members of Mr. Davis  (including the wife and children
        of  Dr.  Rosenwald);   and  (v)  777,297  Shares  owned  by  The  Morton
        Foundation,  a charitable foundation of which Mr. Davis' wife and two of
        their adult  children are the trustees and for which a proxy to vote and
        dispose  of such  Shares  is held by a third  party,  as to all of which
        Shares Blair Banking and Mr. Davis disclaim beneficial ownership.

(13)    Represents  Preferred  Shares which are convertible into 622,222 Shares,
        each  entitled  to one vote per  Share,  on a  converted  basis,  on all
        matters except the election of directors.

(14)    Includes  (i)  2,040,916   Shares  issuable  upon  exercise  of  options
        exercisable  within 60 days and (ii) 7,671 Shares issuable upon exercise
        of outstanding  warrants,  but excludes  1,864,084  Shares issuable upon
        exercise of options which are not exercisable within 60 days.

(15)    All holders own Shares,  with the  exception  of AHP which owns  244,425
        Preferred Shares (convertible into 622,222 Shares) and 9,935 Shares. The
        numbers in this column reflect:

         (a)      for  holders of Shares the percent of class is  calculated  on
                  the basis of 41,073,297 Shares outstanding,  excluding 622,222
                  Shares issuable upon conversion of the Preferred Shares.

         (b)      for  holders  of  Preferred  Shares,  the  percent of class is
                  calculated   on  the  basis  of   244,425   Preferred   Shares
                  outstanding.


                                      - 5 -





                              ELECTION OF DIRECTORS

         At  the  Annual   Meeting,   ten  directors  will  be  elected  by  the
stockholders  to serve until the next Annual  Meeting of  Stockholders  or until
their  successors  are  elected  and  shall  qualify.  Each of the  nominees  is
currently  a director of the  Company.  Management  recommends  that the persons
named below be elected as directors  of the Company and it is intended  that the
accompanying  proxy  will be voted  for the  election  as  directors  of the ten
persons  named  below,  unless the proxy  contains  contrary  instructions.  The
Company  has no  reason  to  believe  that  any of the  nominees  will  not be a
candidate  or will be  unable to serve.  However,  in the event  that any of the
nominees  should become unable or unwilling to serve as a director,  the persons
named in the proxy have  advised  that they will vote for the  election  of such
person or persons as shall be designated by management.

         The  following  sets forth the names and ages of the ten  nominees  for
election to the Board of Directors,  their respective  principal  occupations or
employments  during  the past five years and the  period  during  which each has
served as a director of the Company.

         Lindsay A.  Rosenwald,  M.D. (41) was a co-founder  and since  February
1989 has been Chairman of the Board of Directors of the Company.  Dr.  Rosenwald
has been the Chairman  and  President  of The Castle  Group Ltd.  ("Castle"),  a
biotechnology  and  biopharmaceutical  venture capital firm, since October 1991,
the Chairman and  President of  Paramount  Capital  Investment,  LLC, a merchant
banking firm,  since 1995 and the Chairman and  President of Paramount  Capital,
Inc.,  an investment  banking  firm,  since  February  1992.  In June 1994,  Dr.
Rosenwald founded  Paramount Capital Asset Management,  Inc., a money management
firm specializing in the biotechnology and health sciences  industry.  From 1987
until 1991, Dr. Rosenwald was a Managing  Director,  Corporate Finance at Blair,
an  investment  banking  firm.  Dr.  Rosenwald  received  his M.D.  from  Temple
University  School of Medicine and his B.S. in Finance from  Pennsylvania  State
University. Dr. Rosenwald is a member of the Board of Directors of the following
publicly-traded pharmaceutical or biotechnology companies: Ansan, Inc., Atlantic
Pharmaceuticals,  Inc.,  Avigen,  Inc.,  BioCryst  Pharmaceuticals,  Inc., Neose
Technologies, Inc., Sparta Pharmaceuticals,  Inc., Titan Pharmaceuticals,  Inc.,
VimRx Pharmaceuticals,  Inc., and Xenometrix, Inc., and is Chairman of the Board
or a member of the Board of Directors of a number of privately held companies in
the biotechnology or pharmaceutical fields.

         Glenn L. Cooper, M.D. (44) has been President,  Chief Executive Officer
and a director of the Company since May 1993.  Dr. Cooper was also President and
Chief Executive Officer of Progenitor, Inc. ("Progenitor"),  a subsidiary of the
Company,  from  September  1992 to June 1994. Dr. Cooper is also Chairman of the
Board of Directors of  Intercardia,  Inc.  ("Intercardia"),  a subsidiary of the
Company and  Progenitor,  and is a director of each of  Transcell  Technologies,
Inc. ("Transcell") and InterNutria,  Inc.  ("InterNutria"),  subsidiaries of the
Company,  and  serves  as  acting  President  and  Chief  Executive  Officer  of
Transcell, as well as a director of Aeolus Pharmaceuticals,  Inc. ("Aeolus"),  a
subsidiary of Intercardia. Prior to joining Progenitor, Dr. Cooper was Executive
Vice President and Chief Operating Officer of Sphinx Pharmaceuticals Corporation
from August 1990. Dr. Cooper had been associated with Eli Lilly since 1985, most


                                      - 6 -





recently, from June 1987 to July 1990, as Director,  Clinical Research,  Europe,
of Lilly Research Center Limited; from October 1986 to May 1987 as International
Medical  Advisor,   International   Research   Coordination  of  Lilly  Research
Laboratories;  and  from  June  1985  to  September  1986  as  Medical  Advisor,
Regulatory Affairs,  Chemotherapy Division at Lilly Research  Laboratories.  Dr.
Cooper received his M.D. from Tufts University School of Medicine, performed his
postdoctoral  training in Internal  Medicine and Infectious  Diseases at the New
England Deaconess  Hospital and Massachusetts  General Hospital and received his
A.B. from Harvard College.

         Harry J. Gray (77) has been a director of the  Company  since May 1993.
Mr. Gray was associated with United  Technologies Corp. for 17 years and was its
President  from 1971 until 1972 when he became its Chairman and Chief  Executive
Officer until his retirement in 1986.  Mr. Gray is currently  Chairman and Chief
Executive  Officer of Harry Gray  Associates  of Florida,  a private  investment
firm,  Chairman and Chief Executive Officer of Mott Corporation and Chairman and
Chief Executive Officer of Worldwide Fulfillment and Distribution, Inc.

         Alexander  M. Haig,  Jr. (72) has been a director of the Company  since
January 1990. Since August 1982, General Haig has been Chairman and President of
Worldwide  Associates,  Inc.,  a  business  adviser  to both  U.S.  and  foreign
companies in connection with international marketing and sales activities.  From
January  1981 until July 1982,  General Haig served as Secretary of State of the
United States. From November 1979 until January 1981, General Haig was President
and Chief  Operating  Officer of United  Technologies  Corp.  and is currently a
senior consultant to such corporation.  From 1974 through 1979, General Haig was
the Supreme Allied Commander of NATO. Prior to that, he was White House Chief of
Staff under the Nixon and Ford Administrations. General Haig currently serves on
the Board of Directors of America Online, Inc. and MGM Grand, Inc. and is also a
director of Progenitor.

         Peter  Barton Hutt (62) has been a director of the Company  since April
1994. Mr. Hutt has been a partner of Covington & Burling, a Washington, D.C. law
firm,  since 1975 and from 1968 through 1971, and has been  associated  with the
firm since 1960. He served as Chief Counsel of the Food and Drug  Administration
("FDA")  from 1971 to 1975.  He  currently  serves on the Board of  Directors of
several  developmental stage pharmaceutical  companies,  including Cell Genesys,
Inc.,  Emisphere  Technologies,  Inc.,  IDEC  Pharmaceuticals  Corp.  and Sparta
Pharmaceuticals,  Inc., Mr. Hutt received a B.A. from Yale University, an L.L.B.
from Harvard University and an L.L.M. from New York University.

         Malcolm  Morville,  Ph.D. (51) has been a director of the Company since
February 1993.  Since  February 1993, Dr.  Morville has been President and Chief
Executive  Officer  and  a  director  of  Phytera,  Inc.,  a  plant  and  marine
microbial-based  biotechnology  company.  Dr.  Morville is also  Chairman  and a
member of the Board of  Directors  of  Phytera  A/S and a member of the Board of
Directors  of  Phytera  Ltd.,  both of which are  wholly-owned  subsidiaries  of
Phytera,  Inc. From June 1988 through  January 1993,  Dr.  Morville held various
positions with ImmuLogic  Pharmaceutical  Corporation,  including  Division Vice
President,  Allergic Diseases Strategic Business Unit and Senior Vice President,
Development and Preclinical Research. From 1970 to


                                      - 7 -





June 1988, Dr.  Morville held various  positions  with Pfizer Central  Research,
including  Director,  Immunology and Infectious Diseases and Assistant Director,
Metabolic Diseases and General Pharmacology. Dr. Morville received his Ph.D. and
his B.Sc. in Biochemistry  at the University of Manchester  Institute of Science
and Technology (U.K.).

         Robert  K.  Mueller  (83)  has been a  director  of the  Company  since
February 1993.  Mr. Mueller was Chairman of the Board of Arthur D. Little,  Inc.
from 1977 until his  retirement in 1989 and currently  serves as a consultant to
such entity,  and is a member of the Board of Directors of its U.K.  subsidiary,
Arthur D. Little,  Ltd. (U.K.) and Decision  Resources,  Inc. From 1935 to 1968,
when he joined Arthur D. Little,  Inc., Mr. Mueller held various  positions with
Monsanto Company, including director, member of the executive committee and vice
president positions. Mr. Mueller is the author of numerous books and articles on
management and corporate governance, and received his M.S. in Chemistry from the
University  of  Michigan,  his B.S.  in  Chemical  Engineering  from  Washington
University and completed the Advanced Management Program at Harvard University.

         Lee J.  Schroeder  (68) has been a director of the Company since August
1991.  Since 1985,  Mr.  Schroeder  has been the  President  of Lee  Schroeder &
Associates,  Inc., a pharmaceutical consulting firm. Mr. Schroeder was President
and Chief  Operating  Officer of FoxMeyer  Lincoln  Drug Co., a  wholesale  drug
company,  from February 1983 to March 1985 and was the Executive Vice President,
responsible  for United States  pharmaceutical  operations,  and a member of the
executive  committee of Sandoz,  Inc. from April 1981 to February  1983, and was
Vice President and General Manager of Dorsey Laboratories, a division of Sandoz,
Inc.,  from November 1974 to April 1981.  Mr.  Schroeder is also a member of the
Board of Directors  of Ascent  Pediatrics,  Inc.,  Celgene  Corporation,  Harris
Laboratories, and MGI Pharma Inc.

         David B.  Sharrock  (60)  has  been a  director  of the  Company  since
February 1995. Mr.  Sharrock was associated with Marion Merrell Dow Inc. and its
predecessor  companies  for over  thirty-five  years  until  his  retirement  in
December 1993.  Most recently,  since December 1989, he served as Executive Vice
President and Chief Operating Officer and a director,  and in 1988, he was named
President and Chief Operating  Officer of Merrell Dow  Pharmaceuticals  Inc. Mr.
Sharrock has been a consultant to the Company since  February 1994 and is also a
director of Progenitor and  Intercardia  and member of the Board of Directors of
Cincinnati Bell Inc. and Unitog Co.

         Richard Wurtman, M.D. (60) was a co-founder of the Company and has been
a director of the Company and  Chairman  of the  Scientific  Advisors  since the
Company's  inception  in  October  1988.  Dr.  Wurtman  is the  Cecil  H.  Green
Distinguished Professor in the Department of Brain and Cognitive Sciences at the
Massachusetts  Institute  of  Technology  ("MIT")  where he has been a full-time
Professor  of   Neuroendocrine   Regulation   since  1967  and  a  Professor  of
Neuropharmacology  at the Whitaker  College of Health  Sciences,  Technology and
Management  at MIT.  Since July 1985,  he has been the  Director of the Clinical
Research  Center  at MIT.  Since  1978,  he has been a  part-time  Professor  of
Neuroendocrine  Regulation at Harvard University.  Dr. Wurtman received his M.D.
from Harvard University and his B.A. from the University of


                                      - 8 -





Pennsylvania.  Dr.  Wurtman is a  consultant  to the Company and devotes  only a
portion of his time (limited to a maximum of five days per month) to the Company
and  also is a  consultant  to  other  pharmaceutical  entities,  including  Les
Laboratoires Servier ("Servier") and Grupo Ferrer ("Ferrer").

         Directors  are  elected by the  Company's  stockholders  at each annual
meeting or, in the case of a vacancy,  are  appointed by the  directors  then in
office,  to serve until the next annual  meeting or until their  successors  are
elected and qualified.  Officers are appointed by and serve at the discretion of
the Board of Directors.

         The Board of Directors of the Company  held seven  meetings  during the
fiscal year ended  September 30, 1996 ("fiscal  1996").  Each of the  directors,
except for General Haig and Mr.  Hutt,  attended at least 75% of the meetings of
the Board of Directors and the committees thereof on which such director served,
held during fiscal 1996.

         The Audit  Committee  consists  of General  Haig,  Mr.  Mueller and Mr.
Schroeder.  The Audit  Committee  is  authorized  by the Board of  Directors  to
review, with the Company's independent auditors, the annual financial statements
of the Company and to make annual  recommendations to the Board of Directors for
the  appointment of independent  public auditors for the ensuing year. The Audit
Committee  also  reviews  the  effectiveness  of the  financial  and  accounting
functions,  organization,  internal controls and related party transactions. The
Audit Committee met four times during fiscal 1996.

         The Compensation  Committee,  which consists of Mr. Gray, General Haig,
Dr.  Morville  and Mr.  Sharrock,  reviews  and sets on  behalf  of the Board of
Directors,  the  compensation  and  benefits  of all  executive  officers of the
Company, reviews general policy matters relating to compensation and benefits of
employees of the Company, administers the 1994 Plan, consults with management on
matters  concerning  compensation  and  makes  recommendations  to the  Board of
Directors on  compensation  matters where  approval of the Board of Directors is
required.  The  Compensation  Committee  met three  times  during  fiscal  1996,
including one meeting  during a regular  meeting of the Board of Directors.  The
Company does not have a nominating committee.

                              DIRECTOR COMPENSATION

         With the  exception  of General  Haig,  who  receives a $10,000 fee per
meeting attended,  non-employee directors (except Drs. Rosenwald and Wurtman) of
the Company  receive a fee of $2,000 per  in-person  meeting  attended (for each
meeting held by telephone conference, such directors receive a percentage of the
regular  meeting fee) and,  (except Dr.  Rosenwald)  are reimbursed for expenses
actually  incurred (except Dr. Rosenwald) in attending  meetings.  During fiscal
1996 each of such directors  received  options,  to purchase 1,000 Shares, as an
automatic  grant  pursuant to the terms of the 1994 Plan. In December  1996, the
Company granted options to purchase  100,000 Shares,  subject to annual vesting,
to each of Drs. Rosenwald and Wurtman.  On March 6, 1997,  assuming  stockholder
approval of the amendment to increase the number of





                                      - 9 -





Shares  authorized  for grant  pursuant to the 1994 Plan,  each of the following
directors  will  receive  automatic  grants of options to purchase  5,000 Shares
pursuant to the 1994 Plan: Mr. Gray,  General Haig, Mr. Hutt, Dr. Morville,  Mr.
Mueller,  Mr.  Schroeder,  Mr.  Sharrock  and Dr.  Wurtman.  See  "Approval  and
Ratification of the Amendment to the 1994 Long-Term Incentive Plan, As Amended."

         The Company has a Consulting and Non-Competition Agreement with each of
Dr.  Wurtman and Mr.  Sharrock and a Management  Agreement  with Dr.  Rosenwald.
During fiscal 1996, the Company paid Drs. Wurtman and Rosenwald fees of $146,077
and $30,000,  respectively,  pursuant to their  agreements.  In fiscal 1996, the
Company and its subsidiaries paid or accrued to Mr. Sharrock, who also serves as
a director of Progenitor and Intercardia, and as a consultant to Progenitor: (i)
an aggregate of $32,000 in consulting fees, including $2,000 and $10,500 in fees
for consulting  services rendered by Mr. Sharrock to Intercardia and Progenitor,
respectively;  (ii) directors' fees,  including $4,000 and $10,000 in directors'
fees from  Intercardia and Progenitor,  respectively; and (iii) granted options,
including  options  to  purchase  15,000  shares  of  common  stock  of  each of
Intercardia  and  Progenitor  , to Mr.  Sharrock.  General Haig also serves as a
director of Progenitor.  In fiscal 1996,  Progenitor granted options to purchase
15,000 shares of Progenitor common stock to General Haig. The options granted by
Progenitor to each of General Haig and Mr.  Sharrock,  and by Intercardia to Mr.
Sharrock,  are all exercisable at a price equal to the fair market value of such
company's common stock on the date of grant.





                                     - 10 -





                             EXECUTIVE COMPENSATION

         The  following  summary  compensation  table sets  forth the  aggregate
compensation  paid or accrued by the Company to the Chief Executive  Officer and
to executive  officers whose annual  compensation  exceeded  $100,000 for fiscal
1996  (collectively,  the "named  executive  officers") for services  during the
fiscal years ended September 30, 1996, 1995 and 1994:

<TABLE>
<CAPTION>
                                            Summary Compensation Table

                                                                Annual Compensation
                                                                -------------------
                                                                                         Long Term
                                                                          Other        Compensation
                                                                         Annual         Securities      All Other
                                                 Salary      Bonus    Compensation      Underlying    Compensation
 Name and Principal Position           Year      ($)(1)     ($) (2)      ($)(3)        Options($)(4)     ($)(5)
- - - - - - -------------------------------------------------------------------------------------------------------------------
<S>                                    <C>      <C>        <C>           <C>            <C>               <C>
Glenn L. Cooper, M.D.                  1996     287,500    195,000       143,110          95,000          4,152
     President and Chief               1995     250,000     75,000        22,774         420,000          4,083
     Executive Officer                 1994     259,615     37,500         --             17,000          4,098

Mark S. Butler                         1996     222,500    138,750        65,872         150,000          2,968
    Executive Vice President, Chief    1995     215,000     64,500        61,467         120,000          2,405
    Administrative Officer and         1994     177,789     32,250        32,012         300,000          1,960
    General Counsel

Thomas F. Farb                         1996     207,500    130,500        13,779         125,000          5,369
    Executive Vice President, Finance, 1995     200,000     60,000        36,854         120,000          6,526
    Chief Financial Officer            1994      99,231     30,000        14,000         250,000          2,484
    and Treasurer

Bobby W. Sandage, Jr., Ph.D.           1996     203,962    115,500         --            --               1,575
    Executive Vice President, Research 1995     186,566     55,755         --            220,000          1,633
    and Development, Chief             1994     189,807     27,750         --            --               1,711
    Scientific Officer
</TABLE>

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

 (1)     Includes  for 1994 a 7.5%  voluntary  deferral  of  salary by the named
         executive  officer  from August  1994  through  March 1995,  which were
         accrued  in  fiscal  1994  and  paid in  fiscal  1995 in the  following
         amounts:  $2,163 for Dr. Cooper;  $1,861 for Mr. Butler; $1,731 for Mr.
         Farb,  and  $1,601  for  Dr.  Sandage.   The  salaries  listed  include
         contributions  made by the named  executive  officers to the  Company's
         401(k) Plan in the following  amounts:  (i) for fiscal 1996, $9,800 for
         Dr.  Cooper,  $8,063 for Mr.  Butler $6,300 for Mr. Farb and $9,878 for
         Dr. Sandage;  (ii) for fiscal 1995,  $4,700 for Dr. Cooper,  $9,241 for
         Mr.  Butler  and  $9,678 for Dr.  Sandage;  and (iii) for fiscal  1994,
         $2,800 for Dr.  Cooper,  $4,975  for Mr.  Butler  and  $10,875  for Dr.
         Sandage.

 (2)     Includes the following: (i) for fiscal 1996, bonuses which were accrued
         in fiscal  1996,  portions  of which  were  paid in fiscal  1997 in the
         following  amounts:  $150,000 for Dr.  Cooper;  $90,000 for Mr. Butler;
         $84,000 for Mr. Farb and $84,000 for Dr. Sandage; (ii) for fiscal 1995,
         bonuses which were accrued in fiscal 1995 and paid in fiscal 1996;  and
         (iii) for fiscal  1994,  bonuses,  portions  of which were  voluntarily
         deferred by the named


                                     - 11 -





         executive  officers,  and which were accrued in fiscal 1994 and paid in
         fiscal 1995 in the following amounts:  $37,500 for Dr. Cooper,  $32,250
         for Mr. Butler, $12,500 for Mr. Farb, and $27,750 for Dr. Sandage.

 (3)     Amounts shown in this column consist of the  following:  (i) for fiscal
         1995 and fiscal 1996, reimbursements for the payment of taxes incurred,
         in connection  with benefits  received;  (ii) for fiscal 1996,  for Dr.
         Cooper,  $115,626 of debt forgiveness;  and (iii) moving and relocation
         expenses in the following amounts: (a) for fiscal 1996, for Mr. Butler,
         $43,309 of moving, relocation and temporary living expenses, $36,607 of
         which was paid in fiscal 1996 and $6,702 of which was accrued in fiscal
         1996 but paid in fiscal  1997;  (b) for fiscal 1995,  temporary  living
         expenses for Mr. Butler, $30,822 and for Mr. Farb, $22,000; and (c) for
         fiscal 1994, temporary living expenses, for Mr. Butler, $32,012 and for
         Mr. Farb, $14,000.

 (4)     Consists of the following: (i) for fiscal 1996 and fiscal 1995, options
         granted under the Company's 1994 Plan, except for Dr. Cooper for fiscal
         1996,  which  consists of (a) 50,000  options  granted to Dr. Cooper by
         Transcell;  and (b) options to purchase an aggregate  of 45,000  Shares
         granted under the 1994 Plan to Dr.  Cooper's  wife,  the Company's Vice
         President of Human  Resources,  as to which Shares Dr. Cooper disclaims
         beneficial  ownership;  and (ii) for fiscal 1994, options granted under
         the Company's 1989 Stock Option Plan (the "1989 Plan"),  except for Dr.
         Cooper, which consist of options granted to Dr. Cooper by Progenitor.

 (5)     Amounts shown in this column include the following:

         (a)      disability insurance premiums on behalf of the named executive
                  officers,  in the  following  amounts:  (i) for  fiscal  1996,
                  $1,054 for Dr.  Cooper,  $935 for Mr.  Butler,  $4,710 for Mr.
                  Farb and $853 for Dr.  Sandage;  (ii) for fiscal 1995,  $1,350
                  for Dr. Cooper, $1,161 for Mr. Butler, $6,162 for Mr. Farb and
                  $1,003 for Dr. Sandage;  and (iii) for fiscal 1994, $1,463 for
                  Dr.  Cooper,  $968 for Mr.  Butler,  $2,616  for Mr.  Farb and
                  $1,067 for Dr. Sandage.

         (b)      group  term  life  insurance  premiums  on behalf of the named
                  executive officers,  in the following amounts:  (i) for fiscal
                  1996, $1,020 for Dr. Cooper,  $2,033 for Mr. Butler,  $659 for
                  Mr. Farb and $722 for Dr. Sandage;  (ii) for fiscal 1995, $765
                  for Dr. Cooper,  $1,244 for Mr. Butler,  $364 for Mr. Farb and
                  $630 for Dr.  Sandage;  and (ii) for fiscal 1994, $867 for Dr.
                  Cooper,  $992 for Mr.  Butler,  $232 for Mr. Farb and $644 for
                  Dr.  Sandage.  The Company  has also made term life  insurance
                  premium  payments  on  behalf of Dr.  Cooper in the  following
                  amounts:  (i) for fiscal 1996,  $2,078;  (ii) for fiscal 1995,
                  $1,968; and (iii) for fiscal 1994, $1,768.



                                     - 12 -




         The  following  table sets forth  certain  information  with respect to
individual  grants of stock  options  made by the Company  and its  subsidiaries
during fiscal 1996 to named executive officers:

<TABLE>
<CAPTION>
                                         Option Grants in Last Fiscal Year


                                                                                       Potential Realizable Value at
                                                                                          Assumed Annual Rates of
                                                                                       Stock Price Appreciation for
                                               Individual Grants                              Option Term(5)
                               -------------------------------------------------------     --------------------
                                    No. of       % of Total
                                  Securities       Options
                                  Underlying     Granted to
                                    Options     Employees in      Exercise   Expiration
       Name                         Granted    Fiscal Year (4)      Price       Date           5%           10%
- - - - - - -------------------------------------------------------------------------------------------------------------------
<S>                              <C>                <C>           <C>         <C>          <C>           <C>
Glenn L. Cooper, M.D.             50,000(1)          5.8%           $.90       5/17/06        $28,300       $71,718

Mark S. Butler                   150,000(2)         17.9%         $14.75      10/19/05     $1,391,429    $3,526,155

Thomas F. Farb                   125,000(3)         14.9%         $19.00      12/14/05     $1,493,625    $3,785,138
- - - - - - -----------
</TABLE>

(1)    Represents  options  granted by  Transcell,  a subsidiary  of the Company
       which is not a reporting  company  under the  Securities  Exchange Act of
       1934,  as amended  (the "1934  Act") to Dr.  Cooper,  who is also  acting
       President of Transcell. The options are exercisable in equal installments
       cumulatively over three years commencing May 17, 1997.

(2)    These options are  exercisable in equal  installments  cumulatively  over
       three years commencing December 6, 1996.

(3)    These options are  exercisable in equal  installments  cumulatively  over
       three years commencing April 1, 1997.

(4)    Based on the total of  options  granted by the  Company to its  employees
       during  fiscal 1996,  except for the grant by  Transcell  to Dr.  Cooper,
       whose  percentage  is  calculated  on the basis of total option grants by
       Transcell  to  employees  of  Transcell  during  the  fiscal  year  ended
       September 30, 1996.

(5)    Calculated by multiplying  the exercise price by the annual  appreciation
       rate shown (as prescribed by S.E.C.  rules and compounded for the term of
       the options),  subtracting  the exercise price per share and  multiplying
       the gain per share by the number of shares covered by the options.  These
       amounts are not intended to forecast  possible  future  appreciation,  if
       any,  of the price of the  Company's  Shares  or the price of the  common
       stock of  Transcell.  The actual  value  realized  upon  exercise  of the
       options to purchase  Company  Shares will depend on the fair market value
       of the  Company's  Shares  on the date of  exercise.  There is no  public
       market for the common stock of Transcell,  and the actual value  realized
       upon  exercise  of the  options  to  purchase  shares of common  stock of
       Transcell  will depend upon the fair market  value of the common stock of
       Transcell on the date of exercise, which will depend in part on whether a
       public market for Transcell's common stock is established.


                                     - 13 -





The following table sets forth certain information with respect to each exercise
of stock options during fiscal 1996 by named  executive  officers and the number
and value of unexercised options held by each of the named executive officers as
of September 30, 1996:

                 Aggregated Option Exercises in Last Fiscal Year
                        and Fiscal Year-End Option Values


<TABLE>
<CAPTION>
                                                               Number of Securities              Value
                                                              Underlying Unexercised    of Unexercised in-the-
                                     Shares                      Options at Fiscal         Money Options at
                                    Acquired        Value      Year-End Exercisable/        Fiscal Year-End
       Name                      on Exercise (#) Realized ($)    Unexercisable (#)   Exercisable/Unexercisable ($)(1)
- - - - - - -------------------------------------------------------------------------------------------------------------------
<S>                                   <C>          <C>             <C>                    <C>

Glenn L. Cooper, M.D.                 --           --              760,000/260,000        15,132,500/5,410,000
Mark S. Butler                        --           --              260,000/310,000         5,095,000/5,210,000
Thomas F. Farb                        95,000       2,105,629       131,666/268,334         2,649,778/4,168,347
Bobby W. Sandage, Jr., Ph.D.          --           --              303,750/141,250         6,259,844/2,835,781
</TABLE>

- - - - - - -----------
(1)      Calculated by multiplying the number of unexercised options outstanding
         at September 30, 1996 by the  difference  between the fair market value
         of the Common  Stock at  September  30,  1996  ($28.25)  and the option
         exercise price.



                                     - 14 -





                      STOCK PRICE PERFORMANCE PRESENTATION

         The following chart compares the cumulative total stockholder return on
the Company's  Shares with the cumulative  total  stockholder  return of (i) the
Nasdaq  Market  Index  and  (ii) a peer  group  index  consisting  of  companies
reporting under the Standard Industrial Classification Code 2834 (Pharmaceutical
Preparations):

                      COMPARISON OF CUMULATIVE TOTAL RETURN
                AMONG INTERNEURON PHARMACEUTICALS, INC. ("IPI"),
              NASDAQ MARKET INDEX AND PEER GROUP INDEX ("SIC") (1)


<TABLE>
<CAPTION>
                                     1991          1992          1993          1994        1995          1996
                                     ----          ----          ----          ----        ----          ----
<S>                                  <C>         <C>           <C>           <C>          <C>          <C>
Interneuron Pharma-
   ceuticals, Inc.                   100         105.36        116.07         88.39       164.29       403.57
Peer Group Index                     100         100.91         85.68         96.36       139.31       184.83
Nasdaq Market                        100          98.34        127.89        135.34       164.32       191.84
</TABLE>

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

(1)    Assumes  $100  invested  on  September  30,  1991 and  assumes  dividends
       reinvested.  Measurement points are at the last trading day of the fiscal
       years ended  September 30, 1991,  1992,  1993,  1994,  1995 and 1996. The
       material in this chart is not  soliciting  material,  is not deemed filed
       with the S.E.C. and is not incorporated by reference in any filing of the
       Company under the Securities Act of 1993, as amended, (the "1933 Act") or
       the  1934  Act,  whether  made  before  or after  the date of this  proxy
       statement and irrespective of any general incorporation  language in such
       filing. A list of the companies  included in the Peer Group Index will be
       furnished by the Company to any  stockholder  upon written request to the
       Vice President, Corporate Communications.

             EMPLOYMENT CONTRACTS AND TERMINATION OF EMPLOYMENT AND
                         CHANGE-IN-CONTROL ARRANGEMENTS

         In April 1996, the Company entered into a new employment agreement (the
"Cooper Agreement") with Dr. Cooper, to continue to serve as President and Chief
Executive  Officer of the Company for a term of three years,  subject to renewal
of one year  periods  based  upon the  mutual  agreement  of Dr.  Cooper and the
Company. The Cooper Agreement,  which replaced the Company's original employment
agreement  with Dr. Cooper  pursuant to which Dr. Cooper  received a base annual
salary  of  $300,000,  provides  for Dr.  Cooper  to  receive  a base  salary of
$300,000,  which was  increased  to $350,000  per annum in December  1996,  plus
bonuses  based on the  achievement  of  milestones to be agreed upon between the
Company and Dr. Cooper and payable under the Senior Executive Bonus Plan.

         In October 1993, the Company  loaned Dr. Cooper  $140,000 (the "Company
Loan")  which was used to repay  the  balance  of a loan  made to Dr.  Cooper by
Progenitor. The Company


                                     - 15 -





Loan  originally  provided for repayment as follows:  (a) $30,000,  plus accrued
interest,  was to be repaid  upon,  and out of the  proceeds of, the sale by Dr.
Cooper of any securities of the Company or of the sale of Dr. Cooper's house and
(b) $110,000,  plus accrued interest,  would be forgiven by the Company upon the
achievement  of specified  milestones.  During the first and second  quarters of
fiscal 1996,  an aggregate  of 50% or $64,234 of the  forgivable  portion of the
Company  Loan,   including  accrued  interest,   was  forgiven  based  upon  the
achievement of two specified  milestones,  resulting in a principal  balance for
the Company Loan of $85,000. Pursuant to the Cooper Agreement, the Company Loan,
which  becomes  payable  upon the  earlier of the  termination  of Dr.  Cooper's
employment or May 2000, is evidenced by a promissory note which now provides for
the repayment of the $85,000 balance, plus accrued interest,  which amount shall
be forgiven by the Company,  in installments of 50%, upon the achievement of two
specified milestones. During the third quarter of fiscal 1996, 50% or $51,392 of
the Company  Loan,  including  accrued  interest,  was  forgiven  based upon the
achievement of one milestone,  resulting in a principal balance at September 30,
1996 of $42,500.

         The Company provides Dr. Cooper with a $1,000,000 life insurance policy
payable to the beneficiary of his choice. The Cooper Agreement provides that Dr.
Cooper may not, during the term of the agreement and for a year from the date of
termination of employment,  engage in any business  competitive with the Company
or its research  activities.  If Dr. Cooper is terminated for reasons other than
cause, he is entitled to receive his base salary plus pro-rated average bonuses,
subject to set-off from other  employment,  for a  twelve-month  period.  In the
event of a Change in Control, as defined under the Cooper Agreement,  Dr. Cooper
is  entitled to receive  his base  salary due for the  remaining  portion of his
employment agreement, either in a lump sum or installments, at the discretion of
the Company.

         Pursuant  to a  letter  agreement  between  the  Company  and  Bobby W.
Sandage,  Jr.,  Ph.D.  effective  November  1991,  Dr.  Sandage,  the  Company's
Executive Vice President,  Research and Development,  Chief  Scientific  Officer
receives a base annual salary,  which was increased to $210,000 in December 1995
and to $222,600 in December  1996,  to be  reviewed  annually.  Dr.  Sandage was
eligible to participate in the Company's  Senior Executive Bonus Plan for fiscal
1996. If Dr. Sandage is terminated  for reason other than cause,  he is entitled
to salary and benefits  coverage for the earlier of up to six months or until he
finds a new position.  Dr. Sandage may continue to consult with third parties in
fields unrelated to Company business during non-working hours.

         Effective  December 1993, the Company  entered into a letter  agreement
with  Mark  S.  Butler,   the  Company's   Executive   Vice   President,   Chief
Administrative  Officer and General Counsel.  The agreement  provides for a base
salary,  which was  increased  to $225,000  in December  1995 and to $238,500 in
December  1996,  to be  reviewed  annually.  Mr.  Butler  was also  eligible  to
participate in the Company's Senior Executive Bonus Plan for fiscal 1996. If Mr.
Butler is  terminated  for reason  other than cause or if Mr.  Butler  elects to
terminate for just cause,  Mr. Butler is entitled to receive salary for a period
of nine  months  following  such  termination,  subject  to  set-off  from other
employment.

         In April 1994, the Company entered into a letter  agreement with Thomas
F. Farb,  the Company's  Executive  Vice  President,  Finance,  Chief  Financial
Officer, and Treasurer. The agreement


                                     - 16 -





provides for a base salary, which was increased to $210,000 in December 1995 and
to  $222,600  in  December  1996,  to be  reviewed  annually.  Mr. Farb was also
eligible to participate in the Company's  Senior Executive Bonus Plan for fiscal
1996.  If Mr.  Farb is  terminated  for reason  other than cause or if Mr.  Farb
elects to terminate for just cause, Mr. Farb is entitled to receive salary for a
period of nine months following such termination,  subject to set-off from other
employment.

         In the event of certain transactions,  including those which may result
a change in control,  as defined  under the  Company's  1989 Plan and 1994 Plan,
unvested  installments  of  options to  purchase  Shares  held by all  executive
officers of the Company may become immediately exercisable.

             SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

         Section  16(a)  of  the  1934  Act  requires  the  Company's  executive
officers,  directors  and  persons  who  beneficially  own  more  than  10% of a
registered  class of the  Company's  equity  securities  to file with the S.E.C.
initial reports of ownership and reports of changes in ownership of common stock
and other equity securities of the Company. Such executive officers,  directors,
and greater  than 10%  beneficial  owners are required by S.E.C.  regulation  to
furnish  the  Company  with  copies of all  Section  16(a)  forms  filed by such
reporting persons.

         Based  solely on the  Company's  review of such forms  furnished to the
Company and written  representations from certain reporting persons, the Company
believes that all filing  requirements  applicable  to the  Company's  executive
officers, directors and greater than 10% beneficial owners were complied with.

           COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

         During fiscal 1996, the members of the Compensation Committee were: Mr.
Gray, General Haig, Dr. Morville and Mr. Sharrock.  Mr. Sharrock,  who serves as
the Chairman of the Company's  Compensation  Committee,  is also a consultant to
the Company and  Progenitor  and a director of Progenitor  and  Intercardia.  In
fiscal 1996, the Company and its  subsidiaries  paid or accrued to Mr. Sharrock;
(i) an aggregate of $32,000 in consulting fees,  including $2,000 and $10,500 in
fees for  consulting  services  rendered  by Mr.  Sharrock  to  Intercardia  and
Progenitor,  respectively; (ii) directors' fees, including $4,000 and $10,000 in
directors' fees from Intercardia and Progenitor, respectively, and (iii) granted
options,  including options to purchase 15,000 shares of common stock of each of
Interdardia and Progenitor, to Mr. Sharrock. The options granted to Mr. Sharrock
by each of Progenitor and  Intercardia  are  exercisable at a price equal to the
fair  market  value of such  company's  common  stock on the date of grant.  See
"Certain Transactions."





                                     - 17 -





                       BOARD COMPENSATION COMMITTEE REPORT
                          ON EXECUTIVE COMPENSATION (1)

         The goal of the Company's  executive  compensation  policy is to ensure
that an appropriate  relationship exists between executive  compensation and the
creation of stockholder value, while at the same time attracting, motivating and
retaining senior  management.  The Compensation  Committee's  informal executive
compensation  philosophy  (which  applies  generally to all Company  management,
including the  President and Chief  Executive  Officer,  Glenn L. Cooper,  M.D.)
considers a number of factors, which may include:

o        providing  levels  of  compensation  competitive  with  companies  at a
         comparable stage of development and in the Company's geographic area;

o        integrating   management's   compensation   with  the   achievement  of
         performance goals;

o        rewarding above average corporate performance; and

o        recognizing  and providing  incentive  for  individual  initiative  and
         achievement.

         During fiscal 1996, the compensation of senior  management was weighted
in part toward short-term incentives, including compensation contingent upon the
Company  achieving certain business and financial  objectives.  The Compensation
Committee also endorses the position that equity ownership by senior  management
is beneficial in aligning senior management's and stockholders'  interest in the
enhancement of stockholder value by providing senior management with longer-term
incentives. Accordingly, compensation structures for senior management generally
include a combination of salary,  bonuses and stock options.  Specific executive
officer base salary and bonus awards are determined  with respect to performance
during the  previous  fiscal  year,  based on a range of measures  and  internal
targets set before the start of each fiscal  year and in part by  comparison  to
the  compensation  of  executive   officers  of  comparable   biotechnology  and
pharmaceutical  companies.  The Compensation  Committee  considers the Company's
performance under these measures and uses its subjective judgment and discretion
in approving individual compensation.

         In  formulating  the Senior  Executive  Bonus Plan for fiscal  1996 for
executive  officers of the  Company,  including  Dr.  Cooper,  the  Compensation
Committee  adopted  short-term  performance  measures tied to the Company's cash
position and Common Stock price,  reflecting the goal of positioning the Company
for future growth and enhancing  stockholder  value.  The Senior Executive Bonus
Plan for fiscal 1996 entitled the named  executive  officers to a bonus equal to
varying  percentages of base salary if, among other events, (i) specified levels
of funds were  received by the Company  during fiscal 1996 or (ii) the Company's
Common  Stock price  achieved  certain  levels.  The Company met or exceeded the
performance targets for fiscal 1996 and, accordingly, under the Senior Executive
Bonus Plan for fiscal 1996, Dr. Cooper received a bonus of $195,000, and Messrs.
Butler and Farb and Dr.  Sandage  received  bonuses of $123,750,  $115,500,  and
$115,500,  respectively. In addition, during fiscal 1996, each of Messrs. Butler
and Farb received bonuses of $15,000.



                                     - 18 -





         The  Compensation   Committee  implements  its  policy  on  longer-term
compensation to executive  officers,  including the chief executive officer,  by
granting to an executive  officer upon  joining the Company  stock  options with
vesting over a three year period commencing one year from the date of grant and,
prior to the period in which the final installment of previously granted options
become exercisable,  granting a new option to purchase  approximately 50% of the
number of Shares  issuable  upon  exercise of the  original  option with vesting
commencing one year after the previous  option grant becomes fully vested.  As a
result, during fiscal 1996, each of Messrs. Butler and Farb were granted options
to  purchase  Shares  representing  approximately  50% of the  number of options
originally granted to each of such named executive officers, to commence vesting
approximately  one year after the period in which the original  options  granted
to such executive officers become fully vested.

         The compensation received during fiscal 1996 by Dr. Cooper was governed
in part by the Cooper Agreement,  entered into in April 1996, and in part by Dr.
Cooper's  prior  employment  agreement.  The terms of the Cooper  Agreement were
arrived at after the  Company  considered  a number of  factors,  including  the
following:  (i) a review of Dr.  Cooper's  performance  as  President  and Chief
Executive Officer of the Company,  (ii) a review of the compensation received by
chief  executive   officers  of  comparable   biotechnology  and  pharmaceutical
companies  in the Boston,  Massachusetts  area and (iii) a desire to provide Dr.
Cooper with long-term  incentives to maximize  stockholder  value and to provide
Dr.  Cooper with an equity  interest in the Company  comparable to that of chief
executive officers of comparable biotechnology and pharmaceutical  companies. In
addition, the Compensation Committee adopted the Senior Executive Bonus Plan for
fiscal  1996,  pursuant  to which  the  Compensation  Committee  determined  Dr.
Cooper's bonus for fiscal 1996, based upon the achievement of certain  objective
criteria, as described above.

         The  Company may not have  complied  during  fiscal  1996 with  Section
162(m) of the Internal Revenue Code of 1986, as amended (the "Code"), for option
grants, although the Company should not incur  compensation  to any of the named
executive officers in excess of $1,000,000.

                                   David B. Sharrock, Chairman
                                   General Alexander M. Haig, Jr.
                                   Harry J. Gray
                                   Malcolm Morville, Ph.D.
- - - - - - -----------
(1)      The material in this report is not soliciting  material,  is not deemed
         filed with the  S.E.C.  and is not  incorporated  by  reference  in any
         filing of the Company under the 1933 Act or the 1934 Act,  whether made
         before or after the date of this proxy  statement and  irrespective  of
         any general incorporation language in such filing.



                                     - 19 -





                              CERTAIN TRANSACTIONS




         The  Company  had  a  Consulting  and  Non-Competition  Agreement  (the
"Wurtman  Consulting  Agreement") with Richard Wurtman,  M.D., a director of the
Company,  and his wife, Judith Wurtman,  Ph.D., which  automatically  renewed on
January 1 for  consecutive  periods of one year,  unless either party  otherwise
gave notice to  terminate  sixty days prior to  expiration  of the then  current
term. In November  1995,  the Wurtman  Consulting  Agreement was superseded by a
Consultant  and  Non-Competition  Agreement  between the Company and Dr. Richard
Wurtman and,  effective as of April 5, 1995,  a Consultant  and  Non-Competition
Agreement between InterNutria and Dr. Judith Wurtman. The new agreement entitles
Dr.  Richard  Wurtman  to an  annual  consulting  fee of  $150,000,  subject  to
increases,  and to a bonus upon FDA  approval  of  Redux(TM).  As a result,  Dr.
Wurtman  received a $75,000  bonus in  connection  with the approval of Redux in
April 1996, and $146,077 in consulting fees from the Company in fiscal 1996. The
new  agreement  entitles Dr.  Judith  Wurtman to an annual  consulting  fee from
InterNutria  of  $70,000,   subject  to  increases,   and  options  to  purchase
approximately  5% of the common stock of  InterNutria.  During fiscal 1996,  Dr.
Judith Wurtman received $60,462 in consulting fees.

         Drs.  Richard  Wurtman and Judith Wurtman have advised the Company that
in  accordance  with  MIT  policy,  they  are  entitled  to  receive  from MIT a
percentage of any royalties received by MIT in connection with MIT's licenses of
dexfenfluramine  to Servier and citicoline to Ferrer.  They have further advised
that in accordance with such policy, they are not entitled to share in royalties
derived by MIT from any licensee in which they have an equity  interest (such as
the Company).

         In fiscal 1996, in connection with an agreement  relating to melatonin,
which led to the development of the Company's  Melzone(TM)  product, Dr. Richard
Wurtman received payments aggregating approximately $28,000 from the Company.

         In  fiscal  1996,  the  Company  made  contributions  of  approximately
$182,000 to The Center for Brain Science and  Metabolism  Charitable  Trust,  of
which Dr. Richard Wurtman is the Scientific Director. This trust provides grants
and fellowships to not-for-profit institutions, including MIT, and post-doctoral
fellows for  research in brain  behavior,  nutrition  and  pharmacology  and has
supported research on citicoline and melatonin.

         In November  1995,  the Company and  InterNutria  entered into an Asset
Purchase Agreement with AVAX Technologies,  formerly Walden  Laboratories,  Inc.
("AVAX"),  pursuant  to which  InterNutria  purchased  substantially  all of the
assets of AVAX,  including a product intended for the treatment of pre-menstrual
syndrome and related intellectual  property, for consideration payable in Shares
with a fair  market  value  at the date of  payment  equal  to an  aggregate  of
$2,400,000,  to be paid in two equal annual  installments  in December  1996 and
1997. In December  1996, the Company issued an aggregate of 55,422 Shares as the
first installment, which Shares were distributed to certain stockholders of AVAX
in accordance  with the terms of the Asset Purchase  Agreement.  InterNutria was
organized  by the Company in April 1995 to develop  commercial  applications  of
nutritional products. Dr. Richard Wurtman is a


                                     - 20 -





stockholder of AVAX, Dr.  Rosenwald is a principal  stockholder  and director of
AVAX, Dr. Judith Wurtman previously served as an executive officer, director and
principal  stockholder  of AVAX, and certain other officers and directors of the
Company are  stockholders  of AVAX.  None of such  individuals  received or will
receive any of the Shares  constituting  the purchase price for the AVAX assets.
Dr. Judith Wurtman is a director of and consultant to InterNutria.

         In March 1996,  in  connection  with the  exercise  of 165,000  Class B
Warrants of the Company owned by Lindsay Rosenwald, M.D. with an expiration date
of March 15, 1996, the Company  authorized  Dr.  Rosenwald to effect a net issue
transaction.  As a result of the net issuance, Dr. Rosenwald exercised his Class
B Warrants  through  delivery  of Shares  which he had owned for over six months
with a fair market  value equal to the  exercise  price of the Class B Warrants,
resulting in a net issuance of 138,432 Shares.

           Dr.   Rosenwald   receives  a  management  fee,  which  includes  his
out-of-pocket  expenses incurred in providing services to the Company, of $2,500
per month under a management  agreement  with the Company.  For fiscal 1996, the
Company paid $30,000 to Dr. Rosenwald pursuant to this agreement.

         Dr.  Rosenwald  is the  Chairman  and  President  of Castle,  a venture
capital  firm  engaged  in  locating,   investigating  and  funding   scientific
inventions  or  technologies  which are perceived to have  potential  commercial
application in the pharmaceutical or health care industries,  generally with the
goal of forming a new company to exploit such inventions or technologies. Castle
has presented certain of such opportunities to the Company,  as well as to other
companies,  and  may in the  future  continue  to do so,  although  neither  Dr.
Rosenwald  nor Castle has any  agreement  to do so and there can be no assurance
that any inventions,  technologies  or companies  discovered or funded by Castle
will be presented to the Company.  The Board of Directors of the Company adopted
a  policy  for  compensating  Castle  or  the  Castle  employee  (excluding  Dr.
Rosenwald)  responsible  for the  introduction  (the  "Castle  Finder")  for any
arrangement entered into by the Company as a result of Castle's introduction. No
compensation was paid to Castle Finders during fiscal 1996.

         In fiscal 1996, the Company and its subsidiaries paid or accrued to Mr.
Sharrock, who also serves as a director of Progenitor and Intercardia,  and as a
consultant  to  Progenitor;  (i) an  aggregate  of $32,000 in  consulting  fees,
including  $2,000 and $10,500 in fees for  consulting  services  rendered by Mr.
Sharrock to Intercardia and  Progenitor,  respectively;  (ii)  directors'  fees,
including $4,000 and $10,000 in directors' fees from Intercardia and Progenitor,
respectively;  and (iii) granted options to purchase 15,000 shares of Progenitor
common  stock to General  Haig.  The options  granted by  Progenitor  to each of
General Haig and Mr.  Sharrock,  and by  Intercardia  to Mr.  Sharrock,  are all
exercisable at a price equal to the fair market value of such  company's  common
stock on the date of grant. See "Director Compensation."

         In fiscal 1996, the Company entered into a consulting  agreement in the
amount of $45,000,  with Dr. Gale Cooper, a psychiatrist and the sister of Glenn
L. Cooper, M.D. the






                                     - 21 -





President of the Company,  pursuant to which Dr. Gale Cooper  performed  certain
clinical  consulting  services for the Company.  In November  1996,  the Company
entered into an additional consulting agreement,  for a term of one year subject
to automatic renewals of one year periods,  in the amount of $100,000 per annum,
with Dr. Gale Cooper  pursuant  to which Dr.  Gale Cooper will  perform  certain
medical marketing  services on behalf of the Company.  The Company believes that
the terms of such transactions are at least as favorable to the Company as could
have been obtained from a non-affiliated third party.

         In October 1993, the Company  loaned Dr. Cooper  $140,000 (the "Company
Loan"),  which was used by Dr. Cooper to repay the balance of a loan made to him
by Progenitor. During fiscal 1996, an aggregate of $115,626 of the Company Loan,
including accrued interest, was forgiven based upon the achievement of specified
milestones.   See  "Employment  Contracts  and  Termination  of  Employment  and
Change-in-Control Arrangements."

         Option grants for Fiscal 1996 to named executive officers are set forth
in the table to this Proxy Statement entitled "Securities  Underlying Option/SAR
Grants in Last Fiscal Year." In fiscal 1996, the Company also granted options to
certain of the Company's  directors  pursuant to automatic grant provisions.  In
fiscal 1996,  Transcell granted options to purchase 50,000 shares of Transcell's
common stock to Dr. Glenn L. Cooper,  who is also the acting President and Chief
Executive  Officer of  Transcell.  In December  1995 and July 1996,  the Company
granted options to Dr. Cooper's wife, who currently serves as the Company's Vice
President  of Human  Resources  to  purchase  35,000  Shares and 10,000  Shares,
respectively.


         In December  1996,  the  Company  granted  options to purchase  100,000
Shares,  subject to annual vesting,  to each of Drs. Rosenwald and Wurtman,  and
granted options to purchase 300,000 Shares to Dr. Cooper and options to purchase
150,000 Shares to each of Messrs.  Butler and Farb and Dr. Sandage, all of which
options  are  exercisable  at  $20.125  per Share.  On March 6,  1997,  assuming
stockholder  approval  of  the  amendment  to  increase  the  number  of  Shares
authorized  for issuance  under the 1994 Plan,  each of the following  directors
will receive automatic grants of options to purchase 5,000 Shares under the 1994
Plan:  Mr. Gray,  General  Haig,  Mr.  Hutt,  Dr.  Morville,  Mr.  Mueller,  Mr.
Schroeder, Mr. Sharrock and Dr. Wurtman. See "Director Compensation."


                APPROVAL AND RATIFICATION OF THE AMENDMENT TO THE
                AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

         The Board of  Directors of the Company has adopted and  recommended  to
the stockholders  approval of a proposed amendment to the Company's  Certificate
to increase the authorized  number of Shares from 60,000,000 to 80,000,000.  The
proposed increase in the authorized number of Shares has been recommended by the
Board of  Directors  to assure that an adequate  supply of  authorized  unissued
Shares is available for general corporate needs.




                                     - 22 -





         As  of  January  23,  1997,  in  addition  to  the  41,073,297   Shares
outstanding,  the Company had (i)  1,915,280  Shares  reserved for issuance upon
exercise of options  granted  under the 1989 Plan,  of which options to purchase
1,911,670  Shares are  outstanding;  (ii) 2,906,750 Shares reserved for issuance
upon  exercise  of options  granted  under the 1994 Plan  (which  amount will be
increased by 3,000,000  Shares in the event that the  amendment to the 1994 Plan
is approved),  of which options to purchase  2,887,800  Shares are  outstanding;
(iii)  73,041  Shares  reserved  for  issuance  pursuant to the  Company's  1995
Employee  Stock Purchase  Plan, as amended;  (iv) 902,407  Shares  issuable upon
exercise of other outstanding options and warrants;  (v) 622,222 Shares reserved
for  issuance  upon  conversion  of the  Preferred  Shares;  (vi) a  maximum  of
2,181,250 Shares which may be issued upon the exercise of certain Put Protection
Rights;  (vii)  4,755,575  Shares  reserved  for  issuance  upon  conversion  of
authorized but unissued Preferred Shares; and (viii) an estimated 200,000 Shares
(based on the  market  value of the  Company's  Shares as of January  23,  1997)
issuable  pursuant to certain  agreements  providing for issuances in connection
with certain  acquisitions;  leaving  approximately  2,370,178 additional Shares
available for issuance (or  5,370,178  Shares in the event that the amendment to
the 1994 Plan is not approved).  If the amendment to the Certificate is approved
(and the  amendment  to the 1994 Plan is  approved),  there  will be  22,370,178
authorized Shares available for issuance (or 25,370,178 Shares, in the event the
amendment to the 1994 Plan is not approved), on such terms and conditions as may
be determined by the Board of Directors.

         While the Company has no specific plans, arrangements, or agreements to
issue Shares  other than those  described  above,  the Board of Directors of the
Company believes it is advisable and in the best interest of the Company to have
available  authorized but unissued  Shares in an amount  adequate to provide for
the future needs of the Company.  The additional  authorized Shares will benefit
the Company by providing  flexibility to the Board of Directors  without further
action  or  authorization  by  stockholders  (except  as  required  by law),  in
responding  to business  needs and  opportunities  as they  arise,  or for other
proper corporate purposes.  These corporate purposes might include  acquisitions
of  property,  technology  rights or  securities  of other  corporations,  stock
dividends,  stock splits,  employee stock options,  convertible debt financings,
the obtaining of capital funds through public and private offerings of Shares or
of securities  convertible into  technologies or other assets,  or to compensate
employees or retain  consultants.  The issuance of any additional Shares will be
on terms deemed to be, at the time of such  issuances,  in the best interests of
the Company  and its  stockholders.  If such  additional  authorized  Shares are
subsequently issued to other than existing stockholders, the percentage interest
of existing stockholders in the Company will be reduced.  Holders of Shares have
no pre-emptive rights with respect to future issuances of Shares.

         The Board of  Directors  is not aware of any attempt to gain control of
the Company nor is it  recommending  this  amendment  to increase  the number of
authorized  Shares in response to any specific  effort to obtain  control of the
Company.  The proposed  amendment to increase the number of authorized Shares is
not  designed  as nor  intended  to be an  anti-takeover  measure;  however  the
authorized but unissued  Shares could be used by incumbent  management to make a
change in  control of the  Company  more  difficult  and  time-consuming.  Under
certain circumstances, such unissued Shares could be used to create obstacles or
to frustrate  persons  seeking to effect a takeover or otherwise gain control of
the Company with a view to instituting a


                                     - 23 -





merger,  sale  of  all or  part  of  the  Company's  assets,  or  other  similar
transaction which may not be in the best interest of the stockholders.

         It is  expected  that  the  proposed  amendment,  if  approved  by  the
stockholders, will be made effective on or about March 7, 1997 by the filing and
recording of an appropriate  Certificate of Amendment as required under Delaware
law.

         The Board of Directors  recommends  a vote FOR the proposed  amendment,
and the persons named in the accompanying proxy will vote in accordance with the
choice specified thereon or, if no choice is properly indicated, in favor of the
amendment.

                  APPROVAL AND RATIFICATION OF THE AMENDMENT TO
                  THE 1994 LONG-TERM INCENTIVE PLAN, AS AMENDED

         In December 1996, the Board of Directors of the Company adopted several
amendments to the Company's 1994 Long-Term Incentive Plan, as amended (the "1994
Plan"),  including  an amendment  to increase  the  authorized  number of Shares
available  for  option  grants  pursuant  to the 1994  Plan  from  3,000,000  to
6,000,000 (the "1994 Plan Amendment").  The Board of Directors is requesting and
recommends  to the  stockholders  ratification  and  approval  of the 1994  Plan
Amendment to assure that an adequate  supply of  authorized  unissued  Shares is
reserved  for  issuance for option  grants to ensure the  attraction  of new and
retention of existing executive personnel, key employees, directors, consultants
and advisors and to provide additional  incentive by permitting such individuals
to participate in the ownership of the Company.

         The other amendments to the 1994 Plan adopted by the Board of Directors
in  December  1996  were  undertaken  primarily  to  make  certain  non-material
revisions  as well as to take  advantage of recent  modifications  to Rule 16b-3
("Rule  16b-3")  promulgated  under the 1934 Act (the "Board  Amendments").  The
Board  Amendments   include  provisions  (i)  permitting  certain  transfers  of
non-qualified  options,  (ii)  eliminating  the provisions for restricted  stock
awards under the 1994 Plan,  resulting in 100% of the Shares which may be issued
under the 1994  Plan  available  for  option  grants,  (iii)  modifying  certain
provisions  relating to the effect of transactions  which may result in a change
in control of the  Company,  and (iv)  revising  the number of Initial  Director
Options and Automatic  Grants,  as defined  below.  Stockholder  approval is not
required, however, with respect to the Board Amendments.

General

         The  following  summary  of the 1994  Plan,  including  the  1994  Plan
Amendment and the Board Amendments, is qualified in its entirety by the specific
language  of the 1994  Plan,  which was  adopted  by the Board of  Directors  in
September 1994,  ratified by the Company's  stockholders in 1995, and amended by
the Board of  Directors  in  December  1996,  and a copy of which is attached as
Exhibit A to this Proxy Statement.

         The 1994 Plan, which expires in September 2004, is structured to comply
with applicable provisions of Rule 16b-3 and the Code and is administered by the
Board of Directors or a committee of the Board of Directors  (the  "Committee").
Pursuant to the 1994 Plan, employees,


                                     - 24 -





officers and directors of, and  consultants  or advisors to, the Company and any
subsidiary   corporations  are  eligible  to  receive  incentive  stock  options
("incentive  options")  within the  meaning of  Section  422 of the Code  and/or
options that do not qualify as incentive options ("non-qualified  options"). The
1994 Plan  originally  provided for awards of restricted  stock of up to 300,000
Shares;  however,  pursuant to the Board  Amendments,  such  provision  has been
eliminated, and the Shares which were reserved for restricted stock awards under
the 1994 Plan were made available for option grants. As a result,  the number of
Shares  which may be issued  pursuant  to options  granted  under the 1994 Plan,
prior to the 1994 Plan Amendment, is 3,000,000 Shares. There have been 2,981,050
options granted under the 1994 Plan of which, as of January 23, 1997,  2,887,800
are  outstanding.  If the 1994 Plan Amendment is approved,  the number of Shares
which may be issued  pursuant  to  option  grants  under the 1994 Plan will be a
maximum of 6,000,000 Shares.  The aggregate number of Shares that may be subject
to options  granted  to any person in a calendar  year under the 1994 Plan shall
not exceed 25% of the maximum  number of Shares which may be issued from time to
time under the 1994 Plan  (750,000  Shares or 1,500,000  Shares if the 1994 Plan
Amendment is approved).  The 1994 Plan provides for automatic  grants of options
to certain directors in the manner set forth below under "Directors' Options."

Options

         Options granted under the 1994 Plan may be either incentive  options or
non-qualified  options.  Incentive  options  granted  under  the  1994  Plan are
exercisable for a period of up to 10 years from the date of grant at an exercise
price which is not less than the fair market  value of the Shares on the date of
the grant,  except that the term of an incentive  option  granted under the 1994
Plan to a stockholder  owning more than 10% of the outstanding  voting power may
not exceed  five years and its  exercise  price may not be less than 110% of the
fair market value of the Shares on the date of the grant. To the extent that the
aggregate  fair market value,  as of the date of grant,  of the Shares for which
incentive  options become  exercisable  for the first time by an optionee during
the  calendar  year  exceeds  $100,000,  the portion of such option  which is in
excess of the $100,000  limitation  will be treated as a  non-qualified  option.
Unless otherwise determined by the Board of Directors or the Committee,  options
granted  under the 1994 Plan to officers,  directors or employees of the Company
may be exercised  only while the optionee is employed or retained by the Company
or within 90 days of the date of termination of the employment  relationship  or
directorship.  However, options which are exercisable at the time of termination
by reason of death or  permanent  disability  of the  optionee  may be exercised
within 12 months of the date of termination of the  employment  relationship  or
directorship.  Upon the exercise of an option, payment may be made by cash or by
any other means that the Board of  Directors  or the  Committee  determines.  No
option may be granted under the 1994 Plan after September 2004.

         Options may be granted to such  employees,  officers and  directors of,
and consultants and advisors to, the Company or any subsidiary of the Company as
the Board of  Directors or the  Committee  shall select from time to time in its
sole discretion,  provided that only employees of the Company or a subsidiary of
the Company shall be eligible to receive  incentive  options.  As of January 23,
1997,  the number of  employees,  officers and  directors of the Company and any
subsidiary  of the Company  eligible to receive  grants  under the 1994 Plan was
approximately 180




                                     - 25 -





persons.  The number of  consultants  and  advisors to the  Company  eligible to
receive  grants  under the 1994 Plan is not  determinable.  An  optionee  may be
granted  more than one option  under the 1994 Plan.  Subject to the terms of the
1994 Plan and the Company's  informal policies regarding the granting of options
to senior  management,  the Board of Directors  or the  Committee  will,  in its
discretion,  determine who will be granted  options,  the time or times at which
options  shall be  granted,  and the number of shares  subject  to each  option,
whether the options are  incentive  options or  non-qualified  options,  and the
manner  in  which  options  may be  exercised.  In  making  such  determination,
consideration  may  be  given  to the  value  of the  services  rendered  by the
respective individuals, their present and potential contributions to the success
of the Company and its  subsidiaries  and such other factors deemed  relevant in
accomplishing the purpose of the 1994 Plan.

         The 1994  Plan  provides  for the  acceleration  of  exercisability  of
outstanding options under certain  circumstances  including certain transactions
which may result in changes in control of the Company.

         Under  the  1994  Plan,  the  optionee  has  none  of the  rights  of a
stockholder  with respect to the Shares issuable upon the exercise of the option
until such Shares shall be issued upon such  exercise.  No  adjustment  shall be
made for dividends or distributions or other rights for which the record date is
prior to the date of exercise,  except as provided in the 1994 Plan.  During the
lifetime of the optionee,  an option shall be exercisable  only by the optionee.
No option may be sold, pledged, assigned, hypothecated,  transferred or disposed
of in any manner  other than by will or by the laws of decent and  distribution,
except that non-qualified  options may be transferred by the optionee during his
lifetime to certain permitted transferees, subject to certain conditions.

         The Board of  Directors  may amend or terminate  the 1994 Plan,  except
that  stockholder  approval is required if required by Rule 16b-3 or Section 422
of the Code. No action taken by the Board of Directors may adversely  affect any
outstanding option grant without the consent of the optionee.

Directors' Options

         The  provisions  of the 1994 Plan  provide for the  automatic  grant of
non-qualified  options to purchase Shares  ("Director  Options") to directors of
the Company  who are not  employees  or  principal  stockholders  of the Company
("Eligible  Directors").  In accordance  with the Board  Amendments,  (i) future
Eligible  Directors  of the  Company  will now be granted a  Director  Option to
purchase  20,000 Shares  (instead of 50,000 Shares,  as the 1994 Plan originally
provided) on the date that such person is first  elected or appointed a director
("Initial  Director  Options"),  and  (ii)  commencing  on the  day  immediately
following  the date of the annual  meeting  of  stockholders  for the  Company's
fiscal year ending  September  30,  1996,  each  Eligible  Director,  other than
directors who received an Initial Director Option since the last annual meeting,
will now be granted  ("Automatic  Grants") a Director  Option to purchase  5,000
Shares (instead of 1,000 Shares,  as the 1994 Plan  originally  provided) on the
day immediately  following the date of each annual meeting of  stockholders,  as
long as such director is a member of the Board of


                                     - 26 -





Directors.  The exercise price for each Share subject to a Director Option shall
be equal to the fair market value of the Share on the date of grant.

         Through  January 23, 1997 options to purchase an aggregate of 2,981,050
Shares have been granted  under the 1994 Plan, at exercise  prices  ranging from
$4.875 per Share to $32.00 per Share.

         The  following  table sets forth  certain  information  with respect to
grants of stock options made under the 1994 Plan:

                                NEW PLAN BENEFITS

                    1994 Long-Term Incentive Plan, As Amended

Name and Position                Dollar Value              Number of Options
- - - - - - -----------------                ------------              -----------------
Non-Executive                           (2)                         40,000
Director Group(1)

- - - - - - -----------
(1)      Represents  5,000  options to be  granted  on March 6,  1997,  assuming
         stockholder  approval of the amendment to increase the number of Shares
         authorized  for  issuance  under the 1994  Plan,  to each of Mr.  Gray,
         General Haig, Mr. Hutt, Dr. Morville,  Mr. Mueller, Mr. Schroeder,  Mr.
         Sharrock and Dr. Wurtman,  all of whom are directors of the Company and
         are eligible,  under the terms of the 1994 Plan,  to receive  Automatic
         Grants. See "Directors' Options."

(2)      The  Automatic  Grants  will have an  exercise  price equal to the fair
         market value of the Company's Shares on the date of grant,  pursuant to
         the  provisions  of the  1994  Plan.  It is not  possible  to  forecast
         possible  future  appreciation,  if any, of the price of the  Company's
         Common Stock.  The actual value realized upon exercise of the Automatic
         Grants  will depend on the fair market  value of the  Company's  Common
         Stock on the date of exercise.

Participation in the 1994 Plan

         Option grants for Fiscal 1996 to named executive officers are set forth
in the table to this Proxy Statement entitled "Securities  Underlying Option/SAR
Grants in Last Fiscal Year." In December  1996, the Company  granted  options to
purchase (i) 100,000  Shares to each of Drs.  Rosenwald  and Wurtman  subject to
(ii) 300,000  Shares to Dr. Cooper and (iii)  150,000  Shares to each of Messrs.
Butler and Farb and Dr. Sandage, all of which options are exercisable at $20.125
per Share and are subject to annual vesting provisions.  Future grants under the
1994 Plan, other than as disclosed above, have not yet been determined.

         The Board of Directors  recommends a vote FOR the amendment to the 1994
Plan,  and the persons named in the  accompanying  proxy will vote in accordance
with the choice  specified  thereon or, if no choice is properly  indicated,  in
favor of the approval and ratification.



                                     - 27 -





                        APPROVAL AND RATIFICATION OF THE
                       APPOINTMENT OF INDEPENDENT AUDITORS

         The  Management  of the Company  recommends a vote for the approval and
ratification of the appointment of Coopers & Lybrand  L.L.P.,  Certified  Public
Accountants,  as the Company's  independent  auditors for the fiscal year ending
September 30, 1997.  Coopers & Lybrand L.L.P.  have been the Company's  auditors
for the past fiscal year and has no direct or indirect financial interest in the
Company.  A representative of Coopers & Lybrand L.L.P. is expected to be present
at the Annual Meeting of  Stockholders  with the opportunity to make a statement
if he or she desires to do so, and shall be available to respond to  appropriate
questions.

                                     GENERAL

         The  Management  of the Company does not know of any matters other than
those stated in this Proxy Statement which are to be presented for action at the
meeting.  If any other matters  should  properly come before the meeting,  it is
intended that proxies in the  accompanying  form will be voted on any such other
matters in  accordance  with the  judgment of the persons  voting such  proxies.
Discretionary  authority  to vote on such  matters is  conferred by such proxies
upon the persons voting them.

         The Company will bear the cost of preparing,  printing,  assembling and
mailing  the proxy,  Proxy  Statement  and other  material  which may be sent to
stockholders  in connection  with this  solicitation.  It is  contemplated  that
brokerage  houses will forward the proxy  materials to beneficial  owners at the
request of the Company. In addition to the solicitation of proxies by use of the
mails,  officers  and regular  employees of the Company may solicit by telephone
proxies without additional compensation.  The Company does not expect to pay any
compensation for the solicitation of proxies.

         The Company will provide  without charge to each person being solicited
by this Proxy  Statement,  on the written request of any such person,  a copy of
the  Annual  Report  of the  Company  on Form  10-K for the  fiscal  year  ended
September 30, 1996 (as filed with the S.E.C.) including the financial statements
thereto.  All such  requests  should be  directed to Vice  President,  Corporate
Communications,  Interneuron  Pharmaceuticals,  Inc., One Ledgemont  Center,  99
Hayden Avenue, Lexington, Massachusetts 02173.




                                     - 28 -





                              STOCKHOLDER PROPOSALS

         The Annual Meeting of Stockholders for the fiscal year ending September
30,  1997 is expected to be held in March  1998.  All  proposals  intended to be
presented at the Company's next Annual Meeting of Stockholders  must be received
at the  Company's  executive  office  no later  than  September  30,  1997,  for
inclusion in the Proxy Statement and form of proxy related to that meeting.

                                           By Order of the Board of
                                           Directors,

                                           Glenn L. Cooper, M.D.
                                           President and Chief Executive
                                           Officer

Dated: January 28, 1997


                                     - 29 -





EXHIBIT A

                        INTERNEURON PHARMACEUTICALS, INC.

                    1994 LONG-TERM INCENTIVE PLAN, AS AMENDED






                                     - 30 -






                        INTERNEURON PHARMACEUTICALS, INC.

                    1994 LONG-TERM INCENTIVE PLAN, AS AMENDED


1.                Purpose.

                  The  purpose  of this  plan  (the  "Plan")  is to  secure  for
INTERNEURON  PHARMACEUTICALS,  INC. (the  "Company")  and its  stockholders  the
benefits  arising  from  capital  stock  ownership  by  employees,  officers and
directors  of, and  consultants  or advisors to, the Company who are expected to
contribute to the Company's future growth and success.  Except where the context
otherwise  requires,  the term  "Company"  shall  include all present and future
subsidiaries  of the  Company as defined  in  Sections  424(e) and 424(f) of the
Internal  Revenue  Code of 1986,  as amended or replaced  from time to time (the
"Code").  Those  provisions of the Plan which make express  reference to Section
422 shall apply only to Incentive  Stock Options (as that term is defined in the
Plan).

2.                Type of Options and Administration.

                  (a) Types of  Options.  Options  granted  pursuant to the Plan
shall be  authorized  by action of the Board of  Directors  of the Company (or a
committee  designated by the Board of  Directors,  the  "Committee")  and may be
either  incentive  stock  options   ("Incentive   Stock  Options")  meeting  the
requirements of Section 422 of the Code or  non-statutory  options which are not
intended to meet the requirements of Section 422 of the Code.

                  (b) Administration. The Plan will be administered by the Board
of Directors or the Committee,  whose  construction  and  interpretation  of the
terms and provisions of the Plan shall be final and  conclusive.  The delegation
of  powers  to the  Committee  shall  be  consistent  with  applicable  laws  or
regulations (including, without limitation,  applicable state law and Rule 16b-3
("Rule  16b-3")  promulgated  under  the  Securities  Exchange  Act of 1934 (the
"Exchange Act"), or any successor rule). The Board of Directors or the Committee
may in its sole  discretion  grant  options to purchase  shares of the Company's
Common Stock,  $.001 par value per share ("Common  Stock") and issue shares upon
exercise of such options as provided in the Plan.  The Board of Directors or the
Committee shall have authority,  subject to the express  provisions of the Plan,
to construe the respective option  agreements and the Plan, to prescribe,  amend
and rescind rules and  regulations  relating to the Plan, to determine the terms
and provisions of the respective option agreements, which need not be identical,
and to make all other  determinations  in the judgment of the Board of Directors
or the Committee  necessary or desirable for the administration of the Plan. The
Board of  Directors  or the  Committee  may  correct  any  defect or supply  any
omission or reconcile any  inconsistency  in the Plan or in any option agreement
in the manner and to the extent it shall deem  expedient  to carry the Plan into
effect and it shall be the sole and final judge of such expediency.  No director
or person  acting  pursuant to authority  delegated by the Board of Directors or
the  Committee  shall be liable for any action or  determination  under the Plan
made in good faith. Subject to adjustment as









provided in Section 15 below,  the  aggregate  number of shares of Common  Stock
that may be subject to  Options  granted to any person in a calendar  year shall
not  exceed  25% of the  maximum  number of shares  which may be issued and sold
under the Plan, as set forth in Section 4 hereof, as such section may be amended
from time to time.

                  (c) Applicability of Rule 16b-3.  Those provisions of the Plan
which make  express  reference  to Rule 16b-3 shall apply to the Company only at
such time as the Company's  Common Stock is  registered  under the Exchange Act,
subject to the last sentence of Section  3(b),  and then only to such persons as
are  required  to file  reports  under  Section  16(a)  of the  Exchange  Act (a
"Reporting Person").

3.                Eligibility.

                  (a) General. Options may be granted to persons who are, at the
time of grant,  employees,  officers or directors of, or consultants or advisors
to, the Company or any subsidiaries of the Company as defined in Sections 424(e)
and 424(f) of the Code ("Participants")  provided,  that Incentive Stock Options
may only be granted to individuals  who are employees of the Company (within the
meaning of Section 3401(c) of the Code). A person who has been granted an option
may, if he or she is otherwise  eligible,  be granted  additional options if the
Board of Directors or the Committee shall so determine.

                  (b) Grant of Options to Reporting Persons.  The selection of a
director or an officer who is a Reporting  Person (as the terms  "director"  and
"officer"  are defined for  purposes of Rule 16b-3) as a recipient of an option,
the timing of the option grant,  the exercise price of the option and the number
of shares  subject to the option shall be determined  either (i) by the Board of
Directors,  (ii) by a committee  consisting of two or more directors having full
authority to act in the matter or (iii)  pursuant to  provisions  for  automatic
grants set forth in Section 3(c) below.

                  (c) Directors'  Options.  Directors of the Company who are not
employees and who are not  stockholders  of the Company  beneficially  owning in
excess  of  5% of  the  outstanding  Common  Stock  of  the  Company  ("Eligible
Directors") will receive an option ("Director Option") to purchase 20,000 shares
of Common  Stock on the date that such  person is first  elected or  appointed a
director  ("Initial  Director  Option").   Commencing  on  the  day  immediately
following  the date of the annual  meeting  of  stockholders  for the  Company's
fiscal year ending  September 30, 1996,  each Eligible  Director will receive an
automatic  grant  ("Automatic  Grant") of a Director  Option to  purchase  5,000
shares of Common Stock,  other than  Eligible  Directors who received an Initial
Director  Option since the most recent  Automatic  Grant, on the day immediately
following  the date of each  annual  meeting  of  stockholders,  as long as such
director  is a member of the Board of  Directors.  The  exercise  price for each
share  subject to a Director  Option  shall be equal to the fair market value of
the Common Stock on the date of grant. Director Options shall become exercisable
in four equal annual  installments  commencing one year from the date the option
is granted and will expire the earlier of 10 years after the date of grant or 90
days after the termination of the director's service on the Board.




                                        2





4.                Stock Subject to Plan.

                  The stock  subject to options  granted under the Plan shall be
shares of  authorized  but  unissued  or  reacquired  Common  Stock.  Subject to
adjustment  as  provided in Section 15 below,  the  maximum  number of shares of
Common  Stock of the  Company  which  may be issued  and sold  under the Plan is
6,000,000 shares. If an option granted under the Plan shall expire, terminate or
is  cancelled  for any  reason  without  having  been  exercised  in  full,  the
unpurchased  shares  subject  to  such  option  shall  again  be  available  for
subsequent option grants under the Plan.

5.                Forms of Option Agreements.

                  As a condition to the grant of an option under the Plan,  each
recipient  of an  option  shall  execute  an option  agreement  in such form not
inconsistent  with the Plan as may be approved by the Board of  Directors or the
Committee. Such option agreements may differ among recipients.

6.                Purchase Price.

                  (a) General. The purchase price per share of stock deliverable
upon the exercise of an option shall be  determined by the Board of Directors or
the Committee at the time of grant of such option;  provided,  however,  that in
the case of an Incentive Stock Option, the exercise price shall not be less than
100% of the Fair Market  Value (as  hereinafter  defined) of such stock,  at the
time of grant of such option, or less than 110% of such Fair Market Value in the
case of options  described in Section  11(b).  "Fair Market Value" of a share of
Common Stock of the Company as of a specified  date for the purposes of the Plan
shall mean the  closing  price of a share of the Common  Stock on the  principal
securities  exchange (including the Nasdaq National Market) on which such shares
are traded on the day  immediately  preceding  the date as of which Fair  Market
Value is being  determined,  or on the next  preceding date on which such shares
are traded if no shares were traded on such immediately preceding day, or if the
shares are not traded on a  securities  exchange,  Fair  Market  Value  shall be
deemed to be the  average of the high bid and low asked  prices of the shares in
the  over-the-counter  market on the day  immediately  preceding  the date as of
which Fair Market Value is being  determined  or on the next  preceding  date on
which such high bid and low asked  prices were  recorded.  If the shares are not
publicly traded, Fair Market Value of a share of Common Stock (including, in the
case of any repurchase of shares,  any distributions  with respect thereto which
would be  repurchased  with the shares) shall be determined in good faith by the
Board of  Directors  or the  Committee.  In no case shall Fair  Market  Value be
determined with regard to restrictions  other than restrictions  which, by their
terms, will never lapse.

                  (b) Payment of Purchase Price.  Options granted under the Plan
may provide for the payment of the exercise price by delivery of cash or a check
to the order of the  Company in an amount  equal to the  exercise  price of such
options,  or by any other means which the Board of  Directors  or the  Committee
determines are consistent with the purpose of the Plan and with



                                        3





applicable laws and regulations (including,  without limitation,  the provisions
of Rule 16b-3 and Regulation T promulgated by the Federal Reserve Board).

7.                Option Period.

                  Subject to earlier  termination as provided in the Plan,  each
option and all rights  thereunder shall expire on such date as determined by the
Board of  Directors  or the  Committee  and set forth in the  applicable  option
agreement, provided, that such date shall not be later than (10) ten years after
the date on which the option is granted.

8.                Exercise of Options.

                  Each option granted under the Plan shall be exercisable either
in full or in installments at such time or times and during such period as shall
be set forth in the option  agreement  evidencing  such  option,  subject to the
provisions of the Plan. Subject to the requirements in the immediately preceding
sentence, if an option is not at the time of grant immediately exercisable,  the
Board of Directors or the  Committee may (i) in the  agreement  evidencing  such
option,  provide  for the  acceleration  of the  exercise  date or  dates of the
subject option upon the occurrence of specified events,  and/or (ii) at any time
prior to the complete termination of an option,  accelerate the exercise date or
dates of such option.

9.                Transferability of Options.

                  No  incentive  stock option  granted  under this Plan shall be
assignable or otherwise  transferable  by the optionee  except by will or by the
laws of descent and distribution or pursuant to a qualified  domestic  relations
order  as  defined  in the  Code or Title I of the  Employee  Retirement  Income
Security Act, or the rules  thereunder.  The Board of Directors or the Committee
may, in its discretion,  authorize all or a portion of any non-statutory options
to be  granted to an  optionee  to be on terms  which  permit  transfer  by such
optionee  to  (i)  the  spouse,   children  or  grandchildren  of  the  optionee
("Immediate  Family Members"),  (ii) a trust or trusts for the exclusive benefit
of such Immediate Family Members, or (iii) a partnership in which such Immediate
Family Members are the only partners, provided that (w) the options must be held
by the optionee for a period of at least one month prior to transfer,  (x) there
may be no  consideration  for any such transfer,  (y) the stock option agreement
pursuant  to which such  options  are  granted  must be approved by the Board of
Directors or the Committee,  and must expressly provide for transferability in a
manner consistent with this Section, and (z) subsequent transfers of transferred
options  shall  be  prohibited  except  by  will  or the  laws  of  descent  and
distribution or pursuant to a qualified  domestic  relations order as defined in
the Code or Title I of the Employee Retirement Income Security Act, or the rules
thereunder. Following transfer, any such options shall continue to be subject to
the same terms and conditions as were applicable  immediately prior to transfer,
provided  that for purposes of the Plan the term  "optionee"  shall be deemed to
refer to the  transferee.  The events of termination of employment of Section 10
hereof shall  continue to be applied with respect to the original  optionee.  An
option may be exercised during the lifetime of the optionee only by the original
optionee. In the event an optionee dies



                                        4





during his employment by the Company or any of its  subsidiaries,  or during the
three-month  period  following the date of termination of such  employment,  his
option  shall  thereafter  be  exercisable,  during the period  specified in the
option agreement, by his executors or administrators to the full extent to which
such option was  exercisable by the optionee at the time of his death during the
periods set forth in Section 10 or 11(d).

10.               Effect of Termination of Employment or Other Relationship.

                  Except as provided in Section  11(d) with respect to Incentive
Stock Options and except as otherwise determined by the Committee at the date of
grant of an Option,  and subject to the  provisions of the Plan, an optionee may
exercise an option at any time within six (6) months  following the  termination
of the optionee's  employment or other  relationship  with the Company or within
one (1)  year if such  termination  was due to the  death or  disability  of the
optionee but, except in the case of the optionee's death, in no event later than
the  expiration  date  of the  Option.  If  the  termination  of the  optionee's
employment is for cause or is otherwise attributable to a breach by the optionee
of an employment or  confidentiality  or  non-disclosure  agreement,  the option
shall expire  immediately  upon such  termination.  The Board of Directors shall
have the power to determine what constitutes a termination for cause or a breach
of an employment or  confidentiality  or  non-disclosure  agreement,  whether an
optionee has been  terminated  for cause or has breached such an agreement,  and
the date upon  which  such  termination  for cause or  breach  occurs.  Any such
determinations shall be final and conclusive and binding upon the optionee.

11.               Incentive Stock Options.

                  Options  granted  under  the Plan  which  are  intended  to be
Incentive Stock Options shall be subject to the following  additional  terms and
conditions:

                  (a) Express  Designation.  All Incentive Stock Options granted
under the Plan shall, at the time of grant,  be specifically  designated as such
in the option agreement covering such Incentive Stock Options.

                  (b) 10%  Stockholder.  If any  employee  to whom an  Incentive
Stock  Option  is to be  granted  under the Plan is, at the time of the grant of
such option,  the owner of stock  possessing more than 10% of the total combined
voting power of all classes of stock of the Company  (after  taking into account
the attribution of stock  ownership  rules of Section 424(d) of the Code),  then
the following  special  provisions  shall be  applicable to the Incentive  Stock
Option granted to such individual:

                         (i) The  purchase  price per share of the Common  Stock
                  subject to such Incentive  Stock Option shall not be less than
                  110% of the Fair Market  Value of one share of Common Stock at
                  the time of grant; and




                                        5





                        (ii) The option  exercise  period  shall not exceed five
                  years from the date of grant.

                  (c)  Dollar  Limitation.  For so long  as the  Code  shall  so
provide, options granted to any employee under the Plan (and any other incentive
stock option plans of the Company)  which are intended to  constitute  Incentive
Stock Options shall not  constitute  Incentive  Stock Options to the extent that
such options, in the aggregate, become exercisable for the first time in any one
calendar year for shares of Common Stock with an aggregate Fair Market Value, as
of the respective date or dates of grant, of more than $100,000.

                  (d)  Termination  of  Employment,   Death  or  Disability.  No
Incentive  Stock Option may be exercised  unless,  at the time of such exercise,
the optionee is, and has been continuously since the date of grant of his or her
option, employed by the Company, except that:

                         (i) an Incentive  Stock Option may be exercised  within
                  the period of three months after the date the optionee  ceases
                  to be an employee of the Company (or within such lesser period
                  as  may be  specified  in the  applicable  option  agreement),
                  provided,  that the agreement  with respect to such option may
                  designate a longer exercise period and that the exercise after
                  such three-month  period shall be treated as the exercise of a
                  non-statutory option under the Plan;

                        (ii) if the  optionee  dies  while in the  employ of the
                  Company,  or within three months after the optionee  ceases to
                  be  such  an  employee,  the  Incentive  Stock  Option  may be
                  exercised by the person to whom it is  transferred  by will or
                  the laws of descent and distribution  within the period of one
                  year after the date of death (or within such lesser  period as
                  may be specified in the applicable option agreement); and

                       (iii)  if  the  optionee  becomes  disabled  (within  the
                  meaning  of  Section  22(e)(3)  of the  Code or any  successor
                  provisions  thereto)  while in the employ of the Company,  the
                  Incentive  Stock Option may be exercised  within the period of
                  one year  after  the date the  optionee  ceases  to be such an
                  employee  because of such  disability  (or within  such lesser
                  period  as  may  be   specified  in  the   applicable   option
                  agreement).

For all  purposes  of the Plan and any option  granted  hereunder,  "employment"
shall be defined in accordance with the provisions of Section  1.421-7(h) of the
Income Tax  Regulations  (or any  successor  regulations).  Notwithstanding  the
foregoing  provisions,  no Incentive  Stock  Option may be  exercised  after its
expiration date.

12.               Additional Provisions.

                  (a) Additional  Option  Provisions.  The Board of Directors or
the Committee  may, in its sole  discretion,  include  additional  provisions in
option agreements covering options



                                        6





granted under the Plan,  including without limitation  restrictions on transfer,
repurchase rights, rights of first refusal,  commitments to pay cash bonuses, to
make,  arrange for or guaranty  loans or to transfer other property to optionees
upon exercise of options, or such other provisions as shall be determined by the
Board of Directors or the Committee;  provided,  that such additional provisions
shall not be inconsistent  with any other term or condition of the Plan and such
additional  provisions  shall not cause any Incentive Stock Option granted under
the Plan to fail to qualify as an Incentive  Stock Option  within the meaning of
Section 422 of the Code.

                  (b)  Acceleration,  Extension,  Etc. The Board of Directors or
the Committee may, in its sole  discretion,  (i) accelerate the date or dates on
which all or any  particular  option or  options  granted  under the Plan may be
exercised or (ii) extend the dates during which all, or any  particular,  option
or options granted under the Plan may be exercised;  provided,  however, that no
such  extension  shall be permitted if it would cause the Plan to fail to comply
with Section 422 of the Code or with Rule 16b-3 (if applicable).

13.               General Restrictions.

                  (a)  Investment  Representations.  The Company may require any
optionee,  as a condition of exercising such option, to give written  assurances
in substance and form satisfactory to the Company to the effect that such person
is acquiring the Common Stock subject to the option or award, for his or her own
account  for  investment  and not with  any  present  intention  of  selling  or
otherwise  distributing the same, and to such other effects as the Company deems
necessary or appropriate  in order to comply with federal and  applicable  state
securities  laws, or with  covenants or  representations  made by the Company in
connection with any public offering of its Common Stock, including any "lock-up"
or other restriction on transferability.

                  (b)  Compliance  With  Securities  Law.  Each Option  shall be
subject to the  requirement  that if, at any time,  counsel to the Company shall
determine that the listing,  registration or qualification of the shares subject
to such  option or award upon any  securities  exchange or  automated  quotation
system or under any state or federal  law,  or the  consent or  approval  of any
governmental   or  regulatory   body,  or  that  the  disclosure  of  non-public
information  or the  satisfaction  of any  other  condition  is  necessary  as a
condition  of, or in  connection  with the issuance of shares  thereunder,  such
option  may  not be  exercised,  in  whole  or in  part,  unless  such  listing,
registration,  qualification,  consent  or  approval,  or  satisfaction  of such
condition  shall have been effected or obtained on conditions  acceptable to the
Board of  Directors.  Nothing  herein  shall be deemed to require the Company to
apply  for or to obtain  such  listing,  registration  or  qualification,  or to
satisfy such condition.

14.               Rights as a Stockholder.

                  The holder of an option shall have no rights as a  stockholder
with respect to any shares covered by the option (including, without limitation,
any rights to receive dividends or non-cash  distributions  with respect to such
shares) until the date of issue of a stock certificate to



                                        7





him or her for such shares.  No adjustment  shall be made for dividends or other
rights for which the record date is prior to the date such stock  certificate is
issued.

15.               Adjustment Provisions for  Recapitalizations,  Reorganizations
                  and Related Transactions.

                  (a) Recapitalizations and Related Transactions. If, through or
as a result of any  recapitalization,  reclassification,  stock dividend,  stock
split,  reverse stock split or other similar  transaction,  (i) the  outstanding
shares of Common Stock are  increased,  decreased  or exchanged  for a different
number or kind of shares or other securities of the Company,  or (ii) additional
shares or new or different  shares or other non-cash assets are distributed with
respect to such shares of Common Stock or other  securities,  an appropriate and
proportionate  adjustment  shall be made in (x) the  maximum  number and kind of
shares reserved for issuance under or otherwise referred to in the Plan, (y) the
number and kind of shares or other  securities  subject to any then  outstanding
options  under the Plan,  and (z) the price for each  share  subject to any then
outstanding  options under the Plan,  without  changing the  aggregate  purchase
price  as  to  which  such  options  remain  exercisable.   Notwithstanding  the
foregoing,  no  adjustment  shall be made  pursuant  to this  Section 15 if such
adjustment  (i) would cause the Plan to fail to comply  with  Section 422 of the
Code or with Rule 16b-3 or (ii) would be  considered  as the  adoption  of a new
plan requiring stockholder approval.

                  (b)  Reorganization,  Merger  and  Related  Transactions.  All
outstanding  Options under the Plan shall become fully  exercisable for a period
of sixty (60) days following the occurrence of any Trigger Event, whether or not
such  Options  are then  exercisable  under  the  provisions  of the  applicable
agreements relating thereto.  For purposes of the Plan, a "Trigger Event" is any
one of the following events:

                           (i) the date on which  shares  of  Common  Stock  are
         first  purchased  pursuant to a tender  offer or exchange  offer (other
         than such an offer by the Company, any Subsidiary, any employee benefit
         plan of the Company or of any  Subsidiary or any entity  holding shares
         or other securities of the Company for or pursuant to the terms of such
         plan),  whether or not such offer is approved or opposed by the Company
         and  regardless  of the  number of shares  purchased  pursuant  to such
         offer;

                           (ii) the date the Company acquires knowledge that any
         person or group deemed a person under  Section  13(d)-3 of the Exchange
         Act (other than the Company, any Subsidiary,  any employee benefit plan
         of the Company or of any  Subsidiary  or any entity  holding  shares of
         Common Stock or other  securities of the Company for or pursuant to the
         terms  of any  such  plan or any  individual  or  entity  or  group  or
         affiliate  thereof which  acquired its  beneficial  ownership  interest
         prior to the date the Plan was adopted by the Board),  in a transaction
         or series of transactions, has become the beneficial owner, directly or
         indirectly  (with beneficial  ownership  determined as provided in Rule
         13d-3, or any successor rule, under the Exchange Act), of securities of
         the Company entitling the person or group to 30% or more of all votes



                                        8





         (without  consideration  of the  rights  of any class or stock to elect
         directors by a separate  class vote) to which all  shareholders  of the
         Company  would be  entitled in the  election of the Board of  Directors
         were an election held on such date;

                           (iii) the date,  during any period of two consecutive
         years,  when individuals who at the beginning of such period constitute
         the  Board  of  Directors  of the  Company  cease  for  any  reason  to
         constitute at least a majority  thereof,  unless the  election,  or the
         nomination for election by the stockholders of the Company, of each new
         director was approved by a vote of at least two-thirds of the directors
         then  still in  office  who were  directors  at the  beginning  of such
         period; and

                           (iv) the date of approval by the  stockholders of the
         Company of an agreement (a "reorganization agreement") providing for:

                                    (A)  The  merger  or  consolidation  of  the
                  Company with another corporation where the stockholders of the
                  Company, immediately prior to the merger or consolidation,  do
                  not  beneficially   own,   immediately  after  the  merger  or
                  consolidation,  shares  of the  corporation  issuing  cash  or
                  securities  in the  merger  or  consolidation  entitling  such
                  stockholders   to  65%  or   more   of  all   votes   (without
                  consideration  of the  rights  of any  class of stock to elect
                  directors by a separate class vote) to which all  shareholders
                  of such  corporation  would be  entitled  in the  election  of
                  directors  or where the members of the Board of  Directors  of
                  the Company, immediately prior to the merger or consolidation,
                  do  not,   immediately  after  the  merger  or  consolidation,
                  constitute  a  majority  of  the  Board  of  Directors  of the
                  corporation  issuing  cash  or  securities  in the  merger  or
                  consolidation; or

                                    (B) The sale or other  disposition of all or
                  substantially all the assets of the Company.

                  (c) Board Authority to Make Adjustments. Any adjustments under
this Section 15 will be made by the Board of Directors,  whose  determination as
to what adjustments,  if any, will be made and the extent thereof will be final,
binding and  conclusive.  No fractional  shares will be issued under the Plan on
account of any such adjustments.

16.               Merger, Consolidation, Asset Sale, Liquidation, etc.

                  (a) General. In the event of a consolidation or merger or sale
of all or  substantially  all of the assets of the Company in which  outstanding
shares of Common Stock are exchanged for  securities,  cash or other property of
any other corporation or business entity or in the event of a liquidation of the
Company, the Board of Directors of the Company, or the board of directors of any
corporation  assuming the  obligations of the Company,  may, in its  discretion,
take any one or more of the following actions, as to outstanding options: (i) in
the event of a merger  under the terms of which  holders of the Common  Stock of
the Company will receive upon consummation thereof a cash payment for each share
surrendered in the merger (the



                                        9





"Merger  Price"),  make or provide for a cash payment to the optionees  equal to
the difference between (A) the Merger Price times the number of shares of Common
Stock subject to such  outstanding  options (to the extent then  exercisable  at
prices not in excess of the Merger Price) and (B) the aggregate  exercise  price
of all such outstanding options in exchange for the termination of such options,
and (ii) in the event the provisions of Section 15 are not  applicable,  provide
that all or any outstanding options shall become exercisable in full immediately
prior to such event and upon written notice to the  optionees,  provide that all
unexercised options will terminate immediately prior to the consummation of such
transaction unless exercised by the optionee within a specified period following
the date of such notice.

                  (b)  Substitute  Options.  The Company may grant options under
the Plan in  substitution  for options held by employees of another  corporation
who become  employees of the Company,  or a  subsidiary  of the Company,  as the
result  of a merger  or  consolidation  of the  employing  corporation  with the
Company or a subsidiary of the Company, or as a result of the acquisition by the
Company,  or one of its  subsidiaries,  of  property  or stock of the  employing
corporation.  The Company may direct that substitute  options be granted on such
terms and  conditions  as the Board of Directors  considers  appropriate  in the
circumstances.

17.               No Special Employment Rights.

                  Nothing  contained  in the Plan or in any option  shall confer
upon any  optionee  any right  with  respect to the  continuation  of his or her
employment  by the Company or interfere in any way with the right of the Company
at any  time to  terminate  such  employment  or to  increase  or  decrease  the
compensation of the optionee.

18.               Other Employee Benefits.

                  Except as to plans which by their terms  include  such amounts
as  compensation,  the amount of any  compensation  deemed to be  received by an
employee as a result of the exercise of an option or the sale of shares received
upon such exercise will not  constitute  compensation  with respect to which any
other  employee  benefits of such employee are  determined,  including,  without
limitation, benefits under any bonus, pension, profit-sharing, life insurance or
salary  continuation  plan, except as otherwise  specifically  determined by the
Board of Directors.

19.               Amendment of the Plan.

                  (a) The Board of Directors  may at any time,  and from time to
time, modify or amend the Plan in any respect; provided, however, that if at any
time the approval of the  stockholders  of the Company is required under Section
422 of the Code or any  successor  provision  with  respect to  Incentive  Stock
Options,  or under  Rule  16b-3,  the Board of  Directors  may not  effect  such
modification or amendment without such approval; and provided, further, that the
provisions  of Section 3(c) hereof shall not be amended more than once every six
months,



                                       10





other than to comport with changes in the Code, the Employer  Retirement  Income
Security Act of 1974, as amended, or the rules thereunder.

                  (b) The  modification  or  amendment  of the Plan  shall  not,
without the  consent of an  optionee,  affect his or her rights  under an option
previously granted to him or her. With the consent of the optionee affected, the
Board of  Directors  may amend  outstanding  option  agreements  in a manner not
inconsistent with the Plan. The Board of Directors shall have the right to amend
or  modify  (i) the  terms  and  provisions  of the Plan and of any  outstanding
Incentive  Stock  Options  granted  under the Plan to the  extent  necessary  to
qualify any or all such options for such favorable  federal income tax treatment
(including  deferral of taxation  upon  exercise)  as may be afforded  incentive
stock options under Section 422 of the Code and (ii) the terms and provisions of
the Plan and of any  outstanding  option to the extent  necessary  to ensure the
qualification of the Plan under Rule 16b-3.

20.               Withholding.

                  (a) The Company  shall have the right to deduct from  payments
of any kind  otherwise due to the optionee any federal,  state or local taxes of
any kind  required by law to be withheld  with respect to any shares issued upon
exercise  of  options  under the Plan.  Subject  to the  prior  approval  of the
Company,  which may be  withheld  by the  Company  in its sole  discretion,  the
optionee  may elect to satisfy  such  obligations,  in whole or in part,  (i) by
causing  the  Company to  withhold  shares of Common  Stock  otherwise  issuable
pursuant  to the  exercise  of an option or (ii) by  delivering  to the  Company
shares of Common Stock already owned by the optionee. The shares so delivered or
withheld shall have a Fair Market Value equal to such withholding  obligation as
of the date  that the  amount  of tax to be  withheld  is to be  determined.  An
optionee  who has made an  election  pursuant  to this  Section  20(a)  may only
satisfy his or her withholding  obligation with shares of Common Stock which are
not subject to any repurchase,  forfeiture, unfulfilled vesting or other similar
requirements.

                  (b) The  acceptance of shares of Common Stock upon exercise of
an Incentive  Stock Option shall  constitute an agreement by the optionee (i) to
notify the Company if any or all of such shares are  disposed of by the optionee
within two years  from the date the  option was  granted or within one year from
the date the shares were issued to the optionee  pursuant to the exercise of the
option, and (ii) if required by law, to remit to the Company, at the time of and
in the case of any  such  disposition,  an  amount  sufficient  to  satisfy  the
Company's  federal,  state and local withholding tax obligations with respect to
such  disposition,  whether or not, as to both (i) and (ii),  the optionee is in
the employ of the Company at the time of such disposition.

                  (c) Notwithstanding the foregoing,  in the case of a Reporting
Person whose  options have been granted in  accordance  with the  provisions  of
Section  3(b) herein,  no election to use shares for the payment of  withholding
taxes  shall  be  effective  unless  made  in  compliance  with  any  applicable
requirements of Rule 16b-3.




                                       11





21.               Cancellation and New Grant of Options, Etc.

                  The Board of Directors shall have the authority to effect,  at
any time and from time to time, with the consent of the affected optionees,  (i)
the cancellation of any or all outstanding  options under the Plan and the grant
in  substitution  therefor of new options  under the Plan  covering  the same or
different  numbers of shares of Common Stock and having an option exercise price
per share which may be lower or higher than the exercise  price per share of the
cancelled  options or (ii) the amendment of the terms of any and all outstanding
options  under the Plan to provide an option  exercise  price per share which is
higher  or  lower  than  the  then-current  exercise  price  per  share  of such
outstanding options.

22.               Effective Date and Duration of the Plan.

                  (a)  Effective  Date.  The Plan shall  become  effective  when
adopted by the Board of Directors,  but no Incentive  Stock Option granted under
the Plan  shall  become  exercisable  unless  and until the Plan shall have been
approved by the  Company's  stockholders.  If such  stockholder  approval is not
obtained  within  twelve  months  after the date of the Board's  adoption of the
Plan,  no  options  previously  granted  under  the Plan  shall be  deemed to be
Incentive  Stock  Options  and no  Incentive  Stock  Options  shall  be  granted
thereafter.  Amendments to the Plan not  requiring  stockholder  approval  shall
become  effective when adopted by the Board of Directors;  amendments  requiring
stockholder  approval (as provided in Section 21) shall  become  effective  when
adopted by the Board of Directors,  but no Incentive  Stock Option granted after
the date of such  amendment  shall become  exercisable  (to the extent that such
amendment to the Plan was required to enable the Company to grant such Incentive
Stock Option to a particular  optionee)  unless and until such  amendment  shall
have been approved by the Company's  stockholders.  If such stockholder approval
is not obtained within twelve months of the Board's  adoption of such amendment,
any Incentive Stock Options granted on or after the date of such amendment shall
terminate  to the extent that such  amendment to the Plan was required to enable
the  Company  to grant such  option to a  particular  optionee.  Subject to this
limitation,  options  may be  granted  under  the  Plan at any  time  after  the
effective date and before the date fixed for termination of the Plan.

                  (b) Termination.  Unless sooner  terminated in accordance with
Section  16,  the Plan  shall  terminate  upon the  earlier  of (i) the close of
business  on the day next  preceding  the tenth  anniversary  of the date of its
adoption  by the  Board of  Directors,  or (ii) the  date on  which  all  shares
available  for  issuance  under the Plan shall have been issued  pursuant to the
exercise  or  cancellation  of options  granted  under the Plan.  If the date of
termination is determined under (i) above, then options outstanding on such date
shall continue to have force and effect in accordance with the provisions of the
instruments evidencing such options.

23.               Provision for Foreign Participants.

                  The Board of Directors may, without amending the Plan,  modify
awards or options granted to participants who are foreign  nationals or employed
outside the United States to recognize  differences in laws, rules,  regulations
or customs  of such  foreign  jurisdictions  with  respect  to tax,  securities,
currency, employee benefit or other matters.



                                       12




24.               Governing Law.

                  The provisions of this Plan shall be governed and construed in
accordance  with  the  laws of the  State  of  Delaware  without  regard  to the
principles of conflicts of laws.

                  Adopted  by the Board of  Directors  on  September  23,  1994;
amended by the Board of Directors December 18, 1996.





                                       13




PROXY

                INTERNEURON PHARMACEUTICALS, INC. (the "Company")
                         ANNUAL MEETING OF STOCKHOLDERS

           This Proxy is Solicited on Behalf of the Board of Directors

         The  undersigned  hereby  appoints Glenn L. Cooper,  M.D. or Lindsay A.
Rosenwald,  M.D. as proxy to represent the  undersigned at the Annual Meeting of
Stockholders to be held at The Westin Hotel,  First Floor, Eden Vale Ballroom C,
70 Third Avenue, Waltham, Massachusetts 02154 on March 5, 1997 at 10:00 a.m. and
at any  adjournment  thereof,  and to  vote  the  shares  of  Common  Stock  the
undersigned would be entitled to vote if personally present, as indicated below.

  1.    Election of Directors

        FOR all nominees listed below |_|        WITHHOLDING AUTHORITY  |_|
        (except as marked to the                 to vote for all nominees listed
        contrary below)                          below

 Lindsay A. Rosenwald, M.D., Glenn L. Cooper, M.D., Harry J. Gray, Alexander M.
    Haig, Jr., Peter Barton Hutt, Malcolm Morville, Ph.D., Robert K. Mueller,
           Lee J. Schroeder, David B. Sharrock, Richard Wurtman, M.D.

     (INSTRUCTION:  To withhold  authority to vote for any  individual  nominee,
print that nominee's name on the line provided below.)

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

         2. Approval and  ratification of the proposed  amendment to the Amended
and  Restated  Certificate  of  Incorporation  of the  Company  increasing  from
60,000,000 to 80,000,000 the number of authorized shares of Common Stock.

   FOR |_|                   AGAINST |_|                            ABSTAIN |_|

         3. Approval and  ratification  of the  amendment to the 1994  Long-Term
Incentive Plan, as amended, increasing from 3,000,000 to 6,000,000 the number of
shares of Common Stock reserved for issuance.

   FOR |_|                   AGAINST |_|                            ABSTAIN |_|

         4. Approval and  ratification  of the  appointment of Coopers & Lybrand
L.L.P. as independent auditors of the Company.

   FOR |_|                   AGAINST |_|                            ABSTAIN |_|

         5. In their  discretion,  proxies  are  authorized  to vote  upon  such
business as may properly come before the meeting.

         The Shares  represented by this proxy will be voted as directed.  If no
contrary  instruction is given, the Shares will be voted FOR the election of the
nominees,  FOR the approval and ratification of the amendment to the Amended and
Restated  Certificate  of  Incorporation  of the  Company,  FOR the approval and
ratification  of the amendment to the 1994 Long-Term  Incentive Plan, as amended
and FOR the approval and  ratification  of the  appointment of Coopers & Lybrand
L.L.P. as the independent auditors of the Company.

                                       DATED:______________________, 1997

                                       ----------------------------------
                                       Signature








                                       ----------------------------------
                                       Signature if held jointly.

                                       (Please date,  sign as name
                                       appears  at the  left,  and
                                       return  promptly.   If  the
                                       Shares  are  registered  in
                                       the  names  of two or  more
                                       persons,  each should sign.
                                       When  signing as  Corporate
                                       Officer, Partner, Executor,
                                       Administrator,  Trustee  or
                                       Guardian,  please give full
                                       title.   Please   note  any
                                       changes  in  your   address
                                       alongside the address as it
                                       appears in the proxy.)



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