UNIGENE LABORATORIES INC
S-3/A, 1996-06-28
MEDICINAL CHEMICALS & BOTANICAL PRODUCTS
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      As filed with the Securities and Exchange Commission on June 28, 1996

                                                       Registration No.333-04557
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                         -------------------------------

                           AMENDMENT NO. 1 TO FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

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

                           UNIGENE LABORATORIES, INC.
             (Exact name of Registrant as specified in its charter)

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

           Delaware                                         22-2328609
(State or other jurisdiction of                          (I.R.S. Employer
incorporation or organization)                        Identification Number)

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

                              110 Little Falls Road
                           Fairfield, New Jersey 07004
                                 (201) 882-0860
         (Address, including zip code, and telephone number, including
             area code, of Registrant's principal executive offices)

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

                            Warren P. Levy, President
                           Unigene Laboratories, Inc.
                              110 Little Falls Road
                           Fairfield, New Jersey 07004
                                 (201) 882-0860
         (Name, address, including zip code, telephone number, including
                        area code, of agent for service)

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

                                    Copy to:
                            D. Michael Lefever, Esq.
                               Covington & Burling
                   P.O. Box 7566, 1201 Pennsylvania Ave., N.W.
                           Washington, D.C. 20044-7566

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

          Approximate date of commencement of proposed sale to public:
     From time to time after this Registration Statement becomes effective.

                         -------------------------------
<PAGE>
         If the only securities  being registered on this Form are being offered
pursuant to dividend or interest  reinvestment plans, please check the following
box. [   ]

         If any of the  securities  being  registered  on  this  Form  are to be
offered  on a  delayed  or  continuous  basis  pursuant  to Rule 415  under  the
Securities Act of 1933,  other than  securities  offered only in connection with
dividend or interest reinvestment plans, check the following box. [ X ]

         If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration  statement  number  of the  earlier
effective registration statement for the same offer. [   ]

         If this  Form is a  post-effective  amendment  filed  pursuant  to Rule
462(c) under the Securities Act, check the following box and list the Securities
Act  registration   statement  number  on  the  earlier  effective  registration
statement for the same offering. [   ]

         If delivery of the  prospectus  is expected to be made pursuant to Rule
434, please check the following box. [   ]
<PAGE>
PROSPECTUS

                           UNIGENE LABORATORIES, INC.

                                  Common Stock
                           (par value $.01 per share)
                                 ---------------

                  This  Prospectus  relates  to the  resale  of up to  7,692,201
shares of common  stock,  par value  $.01 per share  (the  "Common  Stock"),  of
Unigene  Laboratories,  Inc., a Delaware  corporation (the "Company")  issued or
issuable  to  certain  persons  or  entities  (the  "Selling  Shareholders")  in
connection with the transactions  described herein. This Prospectus also relates
to an  indeterminate  number of  additional  shares of Common  Stock that may be
issued  to  certain  of  the  Selling  Shareholders  pursuant  to  anti-dilution
provisions or certain adjustment  provisions contained in the warrants,  options
and convertible  debentures  described herein.  All of the shares offered hereby
will  be  offered  and  sold  by  the   Selling   Shareholders.   See   "Selling
Shareholders."  The Company will not receive any  proceeds  from the sale of the
shares of Common Stock offered hereby.

                  The Common Stock is listed on the Nasdaq National Market under
the symbol UGNE. On June 25, 1996,  the last sale price of the Common  Stock, as
reported on the Nasdaq National Market, was $3.31 per share.

                  The  Common  Stock  may be  offered  from  time to time by the
Selling Shareholders to or through brokers,  dealers or other agents or directly
to other purchasers in one or more market  transactions,  in one or more private
transactions  or in a  combination  of such  methods  of sale,  at  prices  then
prevailing,  at prices  related to such  prices,  or at  negotiated  prices.  In
effecting  sales,  brokers,  dealers  or other  agents  engaged  by the  Selling
Shareholders  may arrange for other brokers,  dealers or agents to  participate.
Such  brokers,   dealers  or  agents  may  receive  commissions,   discounts  or
concessions  from the Selling  Shareholders  in amounts to be  negotiated.  Such
brokers or dealers and any other participating  brokers or dealers may be deemed
to be  "underwriters"  within the  meaning  of the  Securities  Act of 1933,  as
amended  (the  "Securities  Act"),  and  any  such  commissions,   discounts  or
concessions may be deemed to be underwriting  discounts or commissions under the
Securities Act.

                  Certain  costs,  expenses  and  fees in  connection  with  the
registration  of the  Common  Stock will be borne by the  Company.  Commissions,
discounts and transfer  taxes,  if any,  attributable to the sales of the Common
Stock will be borne by the Selling Shareholders.

                                     - 1 -
<PAGE>
           INVESTMENT IN THE SECURITIES OFFERED HEREBY INVOLVES A HIGH
                  DEGREE OF RISK. SEE "RISK FACTORS" ON PAGE 4.

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

          THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
           SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
            COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION
               OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
                  ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY
                       REPRESENTATION TO THE CONTRARY IS A
                                CRIMINAL OFFENSE.


                The date of this Prospectus is June 28, 1996.

                                     - 2 -
<PAGE>
NO DEALER,  SALESMAN OR OTHER PERSON IS AUTHORIZED TO GIVE ANY INFORMATION OR TO
MAKE ANY REPRESENTATIONS NOT CONTAINED IN THIS PROSPECTUS IN CONNECTION WITH THE
OFFER MADE HEREBY,  AND, IF GIVEN OR MADE, SUCH  INFORMATION OR  REPRESENTATIONS
MUST NOT BE RELIED UPON AS HAVING BEEN  AUTHORIZED  BY THE COMPANY,  ANY SELLING
SHAREHOLDER OR ANY UNDERWRITER.  THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO
SELL OR A SOLICITATION  OF AN OFFER TO BUY THE SECURITIES  OFFERED HEREBY TO ANY
PERSON IN ANY STATE OR OTHER  JURISDICTION  IN WHICH SUCH OFFER OR  SOLICITATION
WOULD BE UNLAWFUL.  THE DELIVERY OF THIS  PROSPECTUS  AT ANY TIME DOES NOT IMPLY
THAT THE  INFORMATION  CONTAINED  HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO
ITS DATE.
                              AVAILABLE INFORMATION

         The  Company  is  subject  to  the  informational  requirements  of the
Securities  Exchange  Act of 1934,  as  amended  (the  "Exchange  Act"),  and in
accordance therewith files reports,  proxy statements and other information with
the Securities and Exchange Commission (the "Commission").  Such reports,  proxy
statements  and other  information  filed by the  Company can be  inspected  and
copied at the public  reference  facilities  maintained by the Commission at 450
Fifth Street, N.W., Washington,  D.C. 20549; and the public reference facilities
located at the regional  offices of the  Commission at the following  addresses:
New York Regional Office,  7 World Trade Center,  Suite 1300, New York, New York
10048 and Chicago  Regional Office,  Citicorp  Center,  500 West Madison Street,
Chicago, Illinois 60661-2511.  Copies of such material also can be obtained from
the  Public  Reference  Section of the  Commission  at 450 Fifth  Street,  N.W.,
Washington, D.C. 20549, at prescribed rates.

         This Prospectus  constitutes a part of a Registration Statement on Form
S-3 filed by the  Company  with the  Commission  under the  Securities  Act with
respect to the Common Stock being offered by this  Prospectus.  This  Prospectus
does not contain all of the information set forth in the Registration Statement,
certain  portions  of which  have been  omitted  as  permitted  by the rules and
regulations of the Commission. For further information, reference is made to the
Registration Statement, and to the exhibits incorporated therein by reference or
filed  as a  part  thereof.  Any  statements  contained  herein  concerning  the
provisions  of any such  exhibits  are not  necessarily  complete  and,  in each
instance,  reference is made to the copy of such exhibit  filed as an exhibit to
the  Registration  Statement or otherwise filed with the  Commission.  Each such
statement is qualified in its entirety by such reference.

                INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

         The following  documents  filed by the Company with the  Commission are
hereby incorporated by reference in this Prospectus:

                  1.       The Annual Report of the Company on Form 10-K for the
                           year ended December 31, 1995 (the "1995 10-K").

                  2.       The Annual Report of the Company on Form 10-K/A filed
                           April 29, 1996 amending the 1995 10-K.

                  3.       The Quarterly  Report of the Company on Form 10-Q for
                           the quarter ended March 31, 1996.

                  4.       The  description  of the  Company's  Common Stock set
                           forth in the Company's Registration Statement on Form
                           8-A, filed with the Commission on August 4, 1987.


                                     - 3 -
<PAGE>
         All documents filed by the Company pursuant to section 13(a), 13(c), 14
or 15(d) of the Exchange  Act,  subsequent  to the date of this  Prospectus  and
prior to the termination of the offerings to which this Prospectus relates shall
be deemed to be  incorporated  by reference in this  Prospectus and to be a part
hereof from the date of filing of such  documents.  Any  statement in a document
incorporated or deemed to be incorporated by reference herein shall be deemed to
be  modified or  superseded  by this  Prospectus  to the extent that a statement
contained herein or in any other subsequently filed document which also is or is
deemed to be  incorporated  by  reference  herein  modifies or  supersedes  such
statement.  Any such  statement so modified or  superseded  shall not be deemed,
except as so modified or superseded, to constitute a part of this Prospectus.

         The Company hereby  undertakes to provide  without charge copies of all
documents  incorporated  herein  by  reference  (other  than  exhibits  to  such
documents  unless such exhibits are  specifically  incorporated  by reference in
such documents) to each person,  including any beneficial  owner, to whom a copy
of this  Prospectus  has been  delivered  on the written or oral request of such
person to: William Steinhauer, Controller, 110 Little Falls Road, Fairfield, New
Jersey 07004 (telephone number (201)882-0860).


                SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

         Certain statements in this Prospectus under the captions "Risk Factors"
and "The Company" constitute "forward-looking  statements" within the meaning of
the Private  Securities  Litigation  Reform Act of 1995 (the "Reform Act"). Such
forward-looking  statements  involve known and unknown risks,  uncertainties and
other factors that may cause the actual  results,  performance  or activities of
the Company,  or industry  results,  to be materially  different from any future
results,  performance or activities expressed or implied by such forward-looking
statements.  Such factors include: general economic and business conditions, the
financial  condition of the Company,  competition,  the Company's  dependence on
other  companies  to  commercialize,  manufacture  and sell  products  using the
Company's  technologies,  the uncertainty of results of preclinical and clinical
testing,  the risk of product liability and liability for human clinical trials,
the Company's dependence on patents and other proprietary rights,  dependence on
key management officials, the availability and cost of capital, the availability
of qualified personnel,  changes in, or the failure to comply with, governmental
regulations,  the  failure  to  obtain  regulatory  approvals  of the  Company's
products and other factors discussed in this Prospectus. See "Risk Factors".


                                  RISK FACTORS

         Prospective  investors should consider carefully the following factors
concerning the Company and its business before purchasing  securities offered by
this   Prospectus.    Certain   statements   under   this   caption   constitute
"forward-looking  statements"  under the Reform Act. See "Special Note Regarding
Forward-Looking Statements."

         Absence  of  Operating  Revenues  and  Liquidity;  History  of  Losses;
Auditors' Report - Going Concern Considerations. The Company has incurred annual
operating losses since its inception and, as a result, at March 31, 1996, had an
accumulated deficit of $35,700,000. The Company has not received any significant
operating revenues during the last five years.



                                      -4-
<PAGE>
         In addition to operating its production  facility and seeking  approval
for its  Calcitonin  for human use,  the  Company  intends to  continue  certain
internally  funded  research  activities such as the development of a Calcitonin
pill, all of which will contribute to continuing losses from operations.  All of
the Company's  contracts to perform  sponsored  research have been  completed or
cancelled and, at present, it has almost no operating  revenues.  It is unlikely
that the Company's  operating  results will improve unless it is able to license
its  technology,  obtain new  projects,  or  successfully  produce  and sell its
products.  The Company may continue to incur losses over the next several years.
The  auditors'  report for the fiscal year ended  December 31, 1995  contains an
explanatory  paragraph indicating there is substantial doubt about the Company's
ability to continue as a going concern.

         The  Company  has  sufficient   financial   resources  to  sustain  its
operations at the current level through approximately the third quarter of 1996.
To continue its operations  beyond that time will require that the Company enter
into additional financing transactions or marketing,  joint venture or licensing
agreements.  There can be no assurance  that any such  financings  will occur or
that any such agreements will be entered into by the Company.

         Transition  to  Production;  Possibility  of  Delays  or  Inability  to
Manufacture  and  Market  Products.   The  Company  is  currently  undergoing  a
transition  from its historical  research  orientation  toward a business with a
pharmaceutical production focus. Accordingly, the Company is likely to incur the
problems, delays, expenses and difficulties typically encountered by enterprises
in the Company's stage of transition,  many of which may be beyond the Company's
control.

         No  product  of  the   Company  has  been   commercialized   for  human
pharmaceutical use. The commercial manufacture and sale of any such product will
require the  approval of the U.S.  Food and Drug  Administration  ("FDA") and by
comparable  regulatory  authorities  outside  of the  United  States.  See "Risk
Factors -  Government  Regulation."  There  can be no  assurance  that  clinical
testing  will be  successful  or that the  clinical  results will be adequate to
support regulatory submissions.  Furthermore, there can be no assurance that the
Company's  products will be  demonstrated  to be safe and effective or that they
will be approved by the  appropriate  regulatory  authorities.  Even if any such
products are approved,  there is no assurance that they can be  manufactured  in
commercial  quantities  at  reasonable  costs.  Due  to  the  Company's  limited
clinical, manufacturing and regulatory experience and the absence of a marketing
organization,  it may be necessary  for the Company to rely on sponsors or other
parties to perform such tasks for the commercialization of  pharmaceutical-grade
products. See "Risk Factors - Dependence on Large Pharmaceutical Companies."

         Expanded consumer acceptance of pharmaceutical-grade  Calcitonin may be
dependent on development of a consumer  acceptable  delivery system. The Company
and others are  conducting  research  on new  delivery  systems  for  Calcitonin
including  oral  technology.  There can be no  assurance  that the Company  will
develop suitable oral delivery systems or that governmental approval of any such
delivery  system will be obtained.  There can also be no  assurance  that others
will not develop  oral or other  delivery  systems  that could  compete  with or
surpass any oral delivery system developed by the Company.  Moreover,  there are
non-Calcitonin  products currently being marketed for osteoporosis treatment and
other non- Calcitonin  products in development that will compete with Calcitonin
products. See "Risk Factors - Technological Change and Competition."

                                      -5-
<PAGE>

         There  can be no  assurance  that  the  Company  will  have  sufficient
financial  resources  to fund its  operations  until  such time as it is able to
generate  revenues  that are  sufficient  to sustain its  operations.  See "Risk
Factors - Absence  of  Operating  Revenues  and  Liquidity;  History  of Losses;
Auditors' Report - Going Concern Considerations."

         New   Production   Facility.   During  1994,   the  Company   completed
construction of a facility for the production of pharmaceutical-grade Calcitonin
and other peptide hormones.  The Company is leasing the facility under a 10-year
agreement  which began in  February  1994.  The Company has two 10-year  renewal
options  as  well  as an  option  to  purchase  the  facility.  The  Company  is
undertaking  steps to secure FDA validation of the facility which would allow it
to manufacture  Calcitonin for human  pharmaceutical use. The facility has begun
producing  Calcitonin in  accordance  with current Good  Manufacturing  Practice
("cGMP")  regulations,  but  there is no  assurance  that the  facility  will be
approved by the FDA.  Furthermore,  there can be no assurance  that the facility
will be able to achieve its production  goals,  that production at this facility
will be  profitable to the Company,  that others will not develop  processes and
products  superior  to, or  otherwise  precluding  the Company  from  commercial
utilization  of this  facility,  that there  will be a market for the  Company's
products  produced by the facility,  or that sufficient  funds will be available
for the Company to complete the pre-production  process or to produce and market
its products from the facility.

         Dependence on Large Pharmaceutical  Companies. The Company has been and
expects to  continue  to be  dependent  on large  pharmaceutical  companies  for
revenues  from  sales of  product,  research  sponsorship,  joint  ventures  and
licensing arrangements.  During the 1987 to 1990 period, the Company's operating
revenues  resulted  primarily from research  which was totally or  substantially
funded by  pharmaceutical  companies.  The Company  currently  has no  sponsored
research projects.  There is no assurance that the Company will be successful in
its efforts to enter into new research or licensing  agreements or other revenue
producing arrangements.

         The  Company's  past  contracts  with  certain  pharmaceutical  company
sponsors  provide for payment of royalties to the Company on commercial sales of
the products of sponsored research projects.  However, there can be no assurance
that such  sponsors  will  successfully  commercialize  any product based on the
Company's technology. It currently is unlikely that the Company will receive any
material royalties under such past agreements.

         In June 1995, the Company  entered into a joint venture  agreement with
the Qingdao  General  Pharmaceutical  Company and its  Huanghai  factory for the
production  and  marketing of  Calcitonin  in China.  Under the  agreement,  the
Chinese  partners  will  finance the project,  including  the  construction  and
operation of a dedicated  manufacturing facility in China which will utilize the
Company's propriety  production  technology.  The Company will provide the joint
venture with technology and training as well as the Company's proprietary enzyme
at a discounted  price. The Company will receive a combination of fixed fees and
minimum  annual  royalties  based  upon  sales of the end  product.  There is no
assurance  that this joint  venture will be  successful or that the Company will
receive significant income from the joint venture.




                                      -6-
<PAGE>

         Risks  of  International  Operations.  The  Company's  potential  major
customers,  partners and licensees  include foreign  companies or companies with
significant  international  business.  The business operations of such companies
and their  ability to pay  license  fees,  royalties  and other  amounts due and
otherwise to perform their  obligations to the Company under agreements with the
Company may be subject to approval or regulation by foreign  governments.  There
can be no assurance  that required  approvals  will be received.  The failure to
receive required approvals,  governmental regulations and other risks, including
political and foreign currency risks, could affect the ability of the Company to
earn or receive  payments  pursuant to such agreements  and, in such event,  may
have a material adverse effect on the Company's future operations.

         Technological Change and Competition. The Company has concentrated most
of its  efforts on one  product - the use of  Calcitonin  for the  treatment  of
osteoporosis. The market for this treatment of osteoporosis is subject to rapid,
unpredictable and significant technological change. Competition from specialized
biotechnology  companies,   major  pharmaceutical  and  chemical  companies  and
universities  and research  institutions is intense.  Most of the competitors of
the Company have  substantially  greater financial and other resources than does
the Company.  There can be no assurance that  developments by others,  including
alternative chemical means of amidation,  alternative  processes which eliminate
the  need  for  amidation,  and  new  delivery  systems  and  other  osteoporsis
treatments,  will not render the  Company's  technologies  and products  derived
therefrom obsolete or noncompetitive.
                                 
         Product  Liability.  Product liability claims relating to the Company's
technology  or products  may be asserted  against the  Company.  There can be no
assurance that the Company will have  sufficient  resources to defend against or
satisfy any such liability.  Although the Company has recently  obtained product
liability insurance  coverage,  product liability or other judgments against the
Company in excess of insurance  limits could have a material adverse effect upon
the Company's business and financial condition.

         Patents and Proprietary Technology.  The Company has filed applications
for  U.S.  patents  relating  to  the  proprietary  amidation  and  immunization
processes and Calcitonin  pill invented in the course of its research.  To date,
the following two patents have issued:  Immunization By Immunogenic  Implant,  a
process patent, and Alpha-Amidation  Enzyme, a process and product patent. Other
applications  are pending.  Filings  related to the amidation  process have also
been made in selected  foreign  countries  and nine such  foreign  patents  have
issued. There can be no assurance that any of the Company's pending applications
will issue as patents or that the  Company's  issued  patents  will  provide the
Company with significant  competitive advantages.  Furthermore,  there can be no
assurance that competitors will not  independently  develop or obtain similar or
superior  technologies.  Although  the Company  believes  its patents and patent
applications are valid, the invalidation of its Alpha-Amidation Enzyme patent or
the   failure  of  certain  of  its   pending   Alpha-Amidation   Enzyme-related
applications  to issue as patents could have a material  adverse effect upon the
Company's  business.  Difficulties  in detecting  and proving  infringement  are
generally  greater with process patents than with product patents.  In addition,
the  value of a  process  patent  may be  reduced  if the  products  that can be
produced   using  such  process  have  been  patented  by  others.   Under  such
 


                                     -7-
<PAGE>
circumstances,  the  cooperation of these patent  holders or their  sublicensees
would  be  needed  for  the  commercialization  of the  aforementioned  patented
products in countries where these companies hold valid patents.

         In some  cases,  the  Company  relies on trade  secrets to protect  its
inventions.  It is the  policy  of  the  Company  to  include  in  all  research
contracts,  joint  development  agreements  and  consulting  relationships  that
provide access to the Company's trade secrets and other know-how confidentiality
obligations binding on the parties involved.  However, there can be no assurance
that these  secrecy  obligations  will not be breached to the  detriment  of the
Company.  To the extent  sponsors,  consultants  or other  third  parties  apply
technological  information  independently  developed  by  them or by  others  to
Company  projects,  disputes  may  arise as to the  proprietary  rights  to such
information which may not be resolved in favor of the Company.

         Government  Regulation.  The  laboratory  research  activities  of  the
Company and its sponsors,  collaborators  and  licensees,  and the processes and
products  which may be developed by them and the new  production  facility,  are
subject to significant regulation by numerous federal,  state, local and foreign
governmental  authorities.  In addition to obtaining the FDA's validation of the
new  facility,  it is  necessary  to obtain  FDA  approval  for human use of the
Calcitonin to be produced in the facility.  This will require  various human and
animal  studies.  The  Company  will then apply to the FDA for  approval  of the
Company's  Calcitonin for human use. The regulatory process for a pharmaceutical
product may take a number of years and requires  substantial  resources.  In the
case of the  regulatory  process  for the  Company's  Calcitonin  products,  the
Company  believes  that it may be possible to abbreviate  the process.  However,
there can be no assurance that regulatory  approval will be obtained for the new
facility or any of the Company's products. The inability to obtain, or delays in
obtaining,  such  approvals  would  adversely  affect the  Company's  ability to
continue  to fund its  programs,  produce  marketable  products,  or to  receive
revenue from product sales or royalties.  Furthermore, the extent of any adverse
governmental   regulation   that  may  arise   from   future   legislative   and
administrative action cannot be predicted.

         Dependence on Key Executives. Drs. Warren and Ronald Levy have been the
principal  executive  officers of the Company since its  inception.  The Company
relies on them for their leadership and scientific direction. Neither Dr. Warren
P. Levy nor Dr.  Ronald S. Levy has an  employment  agreement  with the Company.
Each of them has entered into an agreement  with the Company  providing  that he
shall not  engage in any other  employment  or  business  for the  period of his
employment  with the Company.  At the present time,  the loss of the services of
either  of  these  individuals  could  have a  material  adverse  impact  on the
Company's business.

         Attraction  and Retention of Key  Personnel.  The Company's  ability to
obtain required governmental  approvals,  produce its products,  obtain research
contracts  and  develop new  technologies  will depend in part on its ability to
attract and retain highly qualified scientific  personnel.  Competition for such
personnel is intense. There can be no assurance that the Company will be able to
attract and retain such personnel.

          Shares Eligible For Future Sale; Outstanding  Convertible  Securities,
Warrants  And  Options.  Other than the issued or to be issued  shares of Common




                                     - 8 -
<PAGE>
Stock to which this  Prospectus  relates,  there are 7,982,177  shares of Common
Stock  that are  registered  under  the  Securities  Act and are  issuable  upon
exercise of its publicly  traded Class B Warrants at an exercise  price of 3.504
per share as of June 28,  1996;  as of June 25,  1996,  approximately  2,700,000
shares of Common Stock that are issuable  upon  conversion of the balance of the
Company's 10%  convertible  debentures;  and  1,603,265  shares  issuable  under
purchase options exercisable at prices ranging from $1.00 to $3.00 per share. In
addition,   4,138,350   outstanding  shares  of  Common  Stock  are  "restricted
securities" as that term is defined by Rule 144 promulgated under the Securities
Act. Such restricted securities may be sold only in compliance with Rule 144, or
pursuant  to  registration  under the  Securities  Act or  pursuant  to  another
exemption therefrom.  The Company may issue additional  convertible  securities,
options, warrants and shares in the future.  Transactions by the Company, or the
occurrence  of certain  other  future  events,  may  require  adjustment  of the
exercise  or  conversion  price and  other  terms of the  Company's  convertible
securities,  options and warrants including, in some circumstances,  an increase
in the number of shares issuable thereunder.

         The Company  cannot  predict the  adverse  effect that market  sales of
Common Stock,  the conversion of such  convertible  securities,  the exercise of
such options or warrants, or the availability of Common Stock for sale will have
on the market price of the Common Stock  prevailing from time to time,  although
it is likely  that sales of a large  number of  securities  would  depress  such
market price.  The Company also cannot predict the adverse effect,  if any, that
such  convertible  securities,  options,  warrants and shares available for sale
will have on the  ability  of the  Company to obtain  additional  capital or the
terms and conditions thereof.

         Possible  Volatility  of  Securities  Prices.  The market prices of the
Company's  securities may be highly  volatile.  Factors such as announcements by
the Company or others of  technological  innovations,  regulatory  matters,  new
products  or  procedures,  proposed  government  regulations,   developments  or
disputes relating to patents or proprietary  rights, and public concern over the
safety of  activities  or products may have a  significant  impact on the market
price of the Company's securities. In addition, future sales of shares of Common
Stock by shareholders and by the holders of convertible securities, warrants and
options could have an adverse effect on the prices of the Company's  securities.
See "Risk  Factors - Shares  Eligible for Future Sale;  Outstanding  Convertible
Securities, Warrants and Options."

         Voting Control.  Warren P. Levy, Ronald S. Levy and Jay Levy,  founders
of the Company,  beneficially own,  approximately 16% of the outstanding  Common
Stock (assuming that outstanding  convertible  securities,  warrants and options
held by others are not converted or exercised)  and, thus,  effectively may have
the ability to elect the entire  Board of  Directors  and control the affairs of
the Company.

         Dividends.  The Company has not paid any cash  dividends  on its Common
Stock since its inception and anticipates  that, for the foreseeable  future, it
will not pay any cash dividends.

         Limitation of  Marketability of Company  Securities.  The Common Stock
currently is traded on the Nasdaq National Market. In order for the Common Stock
to continue to qualify for inclusion on the Nasdaq National Market,  among other
requirements,  the  Company  must  have net  tangible  assets  of at least  $4.0
million.  As of March 31, 1996 the amount of the Company's  net tangible  assets



                                      -9-
<PAGE>
was  approximately  $3.0  million.  See "Risk  Factors -  Absence  of  Operating
Revenues and  Liquidity;  History of Losses;  Auditors'  Report - Going  Concern
Considerations."  The Company has been  advised by the National  Association  of
Securities  Dealers,  Inc.  (the  "NASD")  that due to a  deficiency  in its net
tangible  assets at March 31, the  Company  currently  does not  qualify for the
listing  of its Common  Stock on the  Nasdaq  National  Market.  The  Company is
appealing  this  determination.  If the  Company  is  unable  to  develop a plan
satisfactory  to the  NASD by  which  it will be able to  restore  and  maintain
compliance  with the Nasdaq  National  Market listing  requirements,  the Common
Stock will be removed from trading on the Nasdaq  National  Market.  There is no
assurance,  however,  that the Company  will be  successful  in  preventing  the
removal of the Common Stock from trading on the Nasdaq National  Market.  If the
Common Stock is removed from trading on the Nasdaq National Market,  the Company
intends to make an application for the listing of the Common Stock on the Nasdaq
SmallCap  Market.  If the Company fails to meet the  requirements for trading on
the  Nasdaq  National  Market  and does not  qualify  for  listing in the Nasdaq
SmallCap  Market,  the holders of Common  Stock may find it  difficult to obtain
accurate  quotations  as to  the  market  value  of the  Common  Stock  and  may
experience  greater  difficulties in attempting to sell the Common Stock than if
it were listed on a stock  exchange or quoted on the Nasdaq  National  Market or
the Nasdaq SmallCap Market.

         If the Common Stock is not traded on the Nasdaq  National Market or the
Nasdaq SmallCap  Market,  and the market price of the Common Stock is less than
$5.00 per share,  the Common Stock would be  classified  as a "penny  stock." As
such the Common  Stock  would be subject to Rule 15g-9 under the  Exchange  Act,
which imposes  additional  sales practice  requirements on  broker-dealers  that
recommend the purchase or sale of such securities to persons other than a person
who qualifies as an "established  customer" or an "accredited  investor."  Among
these  requirements  is that a  broker-dealer  must  make a  determination  that
investments  in penny stocks are suitable for the customer and must make certain
special  disclosures  to the  customer  concerning  the  risks of penny  stocks.
Application of the penny stock rules to the Common Stock could adversely  affect
the market liquidity of such securities, which in turn may affect the ability of
the holders of the Common Stock to resell the securities.






















                                     - 10 -
<PAGE>
                                   THE COMPANY

         Unigene  Laboratories,  Inc. is a health-care  oriented  biotechnology
company which is engaged in research and  production of cGMP  Calcitonin  and is
planning to engage in the  production  and  marketing in bulk of  pharmaceutical
grade Calcitonin.  Certain  statements under this caption  constitute  "forward-
looking  statements" under the Reform Act. See "Special Note Regarding  Forward-
Looking  Statements."  The Company's  current  business focus has shifted toward
pharmaceutical production from its historical research orientation.  The Company
has  succeeded in combining its  proprietary  amidation  process with  bacterial
recombinant DNA technology to develop a peptide hormone production process.  The
Company  believes that its proprietary  amidation  process will be a key step in
the more  efficient and  economical  commercial  production  of certain  peptide
hormones with diverse therapeutic applications. Many of these hormones cannot be
produced at a reasonable cost in sufficient  quantities for clinical  testing or
commercial  use  by  currently  available   production   processes.   Using  its
proprietary  process,  the Company has produced  laboratory-scale  quantities of
seven such peptide hormones: human Calcitonin,  salmon Calcitonin,  human Growth
Hormone  Releasing  Factor,  human  Calcitonin   Gene-Related   Peptide,   human
Corticotropin Releasing Factor, human Amylin and a human Magainin.  During 1991,
a study  commissioned  by the  Company was  prepared by a professor  of chemical
engineering at the  Massachusetts  Institute of Technology.  The study evaluated
the  economics  for  producing  multi-kilogram   quantities  of  Calcitonin  and
indicated that the Company's process for producing  Calcitonin should reduce the
cost and time required for commercial production by up to 95%.

         The Company's strategy is to develop proprietary products and processes
with  applications in human  health-care,  independently  or in conjunction with
pharmaceutical  and  chemical  companies,  in order to  generate  revenues  from
license fees, royalties and product sales in bulk. Generally,  the Company seeks
sponsors and licensees to provide research funding and assume responsibility for
obtaining  appropriate  regulatory approvals,  clinical testing,  production and
marketing of products  derived from the Company's  research  activities.  It has
concentrated  most of its efforts on one product - Calcitonin  for the treatment
of  osteoporosis.  The  Company  has built a  production  facility  and plans to
undertake   production  of  pharmaceutical  grade  Calcitonin  and  will  assume
responsibility for the clinical testing and/or applying for regulatory  approval
for certain Calcitonin products.

         Since  1992,  the  Company  has been  producing  and from  time to time
selling small quantities of research-grade  salmon Calcitonin.  During 1993, the
Company  began   construction   of  a  cGMP  facility  for  the   production  of
pharmaceutical-grade  Calcitonin  in leased  premises  located in  Boonton,  New
Jersey which was  mechanically  completed during the fourth quarter of 1994. The
facility will also produce the Company's proprietary amidating enzyme for use in
producing  Calcitonin.  The  initial  production  capacity  of the  facility  is
expected  to  be  between  0.5-1.0   kilograms  of  bulk  Calcitonin  per  year,
representing  approximately  10% of the current  estimated world supply for this
leading osteoporosis drug.

         The Company is following conventional procedures in order to secure the
validation  of the  facility by the FDA in order to allow the Company to provide
its  Calcitonin  for human  use.  Although  the  facility  was  inspected  by an
independent consultant and found to be in compliance with cGMP guidelines, there
can be no assurance  that FDA  validation  will occur.  In addition  there is no
assurance that the facility  production goals will be achieved,  that there will
be a market for the Company's products,  that such production will be profitable

                                     - 11 -
<PAGE>
to the Company, that others will not develop processes and products superior to,
or otherwise precluding the commercial utilization of, the processes or products
developed  by the  Company.  The design of the facility is intended to allow for
substantial  increases in Calcitonin production utilizing the existing equipment
with no additional capital expenditures or personnel. Although the facility will
initially be exclusively devoted to Calcitonin production,  it would be suitable
for producing  other  peptide  hormone  products in the future.  There can be no
assurance that there will be sufficient  acceptance of the Company's products in
the  marketplace  for  successful  commercialization.  See  "Risk  Factors - New
Production Facility."

         In addition to obtaining the FDA's validation of the new facility,  it
is necessary to obtain regulatory  approval in each country for human use of the
salmon  Calcitonin  to be produced in the  facility.  This will require  various
human  and  animal  studies.  The  Company  will then  apply to the  appropriate
regulatory agencies for approval of the Company's  Calcitonin for human use. The
Company  requested in May 1996 that the  regulatory  authority  for drugs in the
United  Kingdom  authorize  the Company to conduct  pivotal  clinical  Phase III
trials of its injectable  form of Calcitonin,  which request was granted in June
1996. The Company expects the trial to be completed during the fourth quarter of
1996.  The Company plans to apply for  marketing  authorization  throughout  the
European Union soon after  completion of the clinical  trial.  In addition,  the
Company  recently filed an  Investigational  New Drug (IND)  application for its
injectable form of Calcitonin with the FDA.  However,  there can be no assurance
that these  studies  will  produce  satisfactory  results or that the  necessary
governmental approvals will be obtained as projected.

         Expanded consumer acceptance of pharmaceutical-grade Calcitonin may be
dependent on  development  of a consumer  acceptable  delivery  system.  A major
pharmaceutical  company received FDA approval during 1995 for the marketing of a
nasal spray delivery system for  Calcitonin,  which could enlarge the market for
Calcitonin.  The Company  and others are  conducting  research on oral  delivery
systems for Calcitonin. There can be no assurance that suitable delivery systems
will be developed or that governmental approval of such delivery systems will be
obtained.

         The Company is continuing its efforts to develop a Calcitonin  pill. In
December,  1995 and the first half of 1996, the Company  successfully tested its
proprietary  Calcitonin  pill in Phase I clinical  trials in the United Kingdom.
The latest of these studies  indicated that all of the subjects who received the
pill showed  levels of the hormone in blood samples taken during the trial which
are greater than levels generally  regarded as required for maximal  therapeutic
benefit.  The Company  believes  that this is the first time  significant  blood
levels of Calcitonin have been observed in humans following oral  administration
of the  hormone.  However,  there is no  assurance  that these  results  will be
replicated  in  further  studies.  The  Company  has  recently  filed  a  patent
application for its oral  formulation  with the U.S. Patent and Trademark Office
and plans to file an  Investigational  New Drug (IND)  application with the FDA.
There can be no assurance that either  application will be approved as projected
or that the Company will be successful in marketing its products.

         The planned  activities  of the  Company  are all subject to  obtaining
adequate  financing.  There  can be no  assurance  that the  Company  will  have
sufficient  resources  to complete  the  preproduction  process,  to produce and
market its  products  and to carry on its other  projects.  See "Risk  Factors -
Absence of Operating Revenues and Liquidity; History of Losses; Auditors' Report
- - Going Concern Considerations."



                                     - 12 -
<PAGE>
         The  Company  is  currently  engaged  in  two  collaborative   research
programs. One, with Rutgers University College of Pharmacy,  seeks to develop an
oral drug delivery system for Calcitonin. The second collaboration, performed in
conjunction  with Yale  University,  is  investigating  novel  applications  for
certain  amidated  peptide  hormones,  including CGRP,  Calcitonin  gene-related
peptide.

         At  present,   the  Company  has  no  third  party  sponsored  research
agreements in effect. The Company is currently conducting discussions with major
pharmaceutical  companies regarding licensing and/or research agreements.  There
can be no  assurance  that  such  discussions  will  result in new  research  or
licensing agreements or that the Company will be able to obtain adequate funding
for  its  current  or  new   projects.   The  Company  is   dependent  on  large
pharmaceutical  companies,  having much greater resources than the Company,  for
revenues  from  sales of  product,  research  sponsorship,  joint  ventures  and
licensing  arrangements.  See "Risk Factors - Dependence on Large Pharmaceutical
Companies" and "Risk Factors - Risks of International Operations."

          The Company has  established  a  multi-disciplinary  research  team to
adapt current genetic engineering technologies to the development of proprietary
products  and  processes.  The  Company,  at  June  1,  1996,  had 60  full-time
employees, including 25 research and development personnel and 24 pre-production
personnel.  10 employees have Ph.D.  degrees in the fields of molecular biology,
microbiology,  biochemistry,  pharmacology or organic  chemistry.  The Company's
employees have expertise in molecular biology, including DNA cloning, synthesis,
sequencing and expression; protein chemistry, including purification, amino acid
analysis,  synthesis  and  sequencing  proteins;  immunology,  including  tissue
culture,   monoclonal  and  polyclonal   antibody   production  and  immunoassay
development; chemical engineering; pharmaceutical production; quality assurance;
and quality control.  None of the Company's employees is covered by a collective
bargaining agreement.

         The Company was incorporated under the laws of the State of Delaware in
November  1980. Its executive  offices and laboratory  facilities are located at
110 Little Falls Road, Fairfield, New Jersey, 07004, and its telephone number is
(201)882-0860.


                              SELLING SHAREHOLDERS


         2,869,565 of the shares of Common Stock  offered  hereby were issued or
are issuable by the Company to holders (the  "Debenture  Holders") of $3,300,000
aggregate  principal  amount of the Company's  9.5% Senior  Secured  Convertible
Debentures (the "Debentures") upon conversion of the Debentures.  The Debentures
were  issued  by the  Company  in a  private  transaction  on March 6,  1996 and
initially are  convertible  into Common Stock at a conversion  rate of $1.15 per
share that is subject to a downward  adjustment  upon the  occurrence of certain
events. The Debentures also contain certain  anti-dilution  provisions which may
require the Company to issue  additional  shares of Common Stock upon conversion
thereof.  In connection with the issuance of the Debentures,  the Company agreed
to register the Common Stock into which the Debentures are convertible under the
Securities  Act and to keep such  registration  effective for a period ending on
the earlier of (i) February 28, 1999 and (ii) the date upon which the  Debenture
Holders are able to resell all of the Common Stock into which the Debentures are
convertible without registration under the Securities Act. An additional 225,000
of the shares of Common Stock offered  hereby were issued or are issuable by the
Company to the  Debenture  Holders  upon  exercise  of certain of the  Company's
warrants held by the Debenture  Holders.  The Debenture  Holders  purchased such
warrants in November  1995 from a holder who received  warrants from the Company
in  connection  with a loan by such holder to the Company.  The warrants held by
the Debenture  Holders  initially are exercisable at a price of $1.375 per share
that is subject to a downward  adjustment upon the occurrence of certain events.

                                     - 13 -
<PAGE>
Such warrants also contain certain  anti-dilution  provisions  which may require
the  Company  to adjust the  exercise  price and to issue  additional  shares of
Common  Stock upon the  exercise  thereof.  The Company  agreed to register  the
Common Stock for which such warrants are  exercisable  under the Securities Act.
The  table  below  sets  forth the name of each  Debenture  Holder  and  certain
information with respect to the beneficial  ownership of Common Stock and number
of shares of Common Stock offered by each Debenture Holder.

         3,456,536 of the shares of Common Stock  offered  hereby were issued or
are issuable by the Company to holders (the  "Warrantholders")  upon exercise of
warrants  of the  Company  (the  "Warrants").  The  Warrants  were issued by the
Company  between  October  1994  and  April  1996 in  consideration  of  certain
financial  and  consulting  services  performed for the Company or in connection
with loans to the Company.  The Warrants  initially  are  exercisable  at prices
ranging from $1.375 to $3 per share.  Certain of the Warrants contain adjustment
provisions which may result in a downward  adjustment in the exercise price upon
the occurrence of certain  events.  Certain of the Warrants also contain certain
anti-dilution  provisions  which may require the Company to adjust the  exercise
price and to issue additional  shares of Common Stock upon the exercise thereof.
In connection with the issuance of the Warrants,  the Company agreed to register
the Common  Stock for which the Warrants are  exercisable  under the  Securities
Act.  The table  below sets  forth the name of each  Warrantholder  and  certain
information with respect to the beneficial  ownership of Common Stock and number
of shares of Common Stock offered by each Warrantholder.

         115,000 of the shares of Common Stock offered hereby were issued or are
issuable  by the  Company to holders  (the  "Optionholders")  upon  exercise  of
options granted by the Company (the "Options").  The Options were granted by the
Company  between  January  1993  and  April  1996 in  consideration  of  certain
consulting  services  performed  for the  Company by the  holders  thereof.  The
Options are exercisable at prices ranging from $1.4375 to $4.5625 per share. The
Options  also contain  certain  anti-dilution  provisions  which may require the
Company to issue  additional  shares of Common Stock upon the exercise  thereof.
The  Company  agreed to  register  the Common  Stock for which the  Options  are
exercisable  under the  Securities  Act.  The table below sets forth the name of
each  Optionholder  and  certain  information  with  respect  to the  beneficial
ownership of Common  Stock and number of shares of Common Stock  offered by each
Optionholder.

         826,000 of the shares of Common Stock offered hereby were issued by the
Company to certain  stockholders  (the "Private  Placement  Stockholders")  in a
private  placement  completed  February  1996.  In  connection  with the private
placement, the Company agreed to register the Common Stock issued in the private
placement  under the Securities Act. The table below sets forth the name of each
Private  Placement  Stockholder  and  certain  information  with  respect to the
beneficial  ownership  of  Common  Stock and  number  of shares of Common  Stock
offered by each Private Placement Stockholder.

         200,100 of the shares of Common  Stock  offered  hereby were or will be
issued by the Company to certain other holders (the "Other Holders").  10,000 of
such shares of Common  Stock will be issued to Kien-Tsai  Chen in  consideration
for services  performed for the Company.  Certain of the Other Holders  received
shares of Common Stock in connection with such Other Holders' exercise,  between
June 1994 and January 1995, of options  purchased from persons who received such
options from the Company in connection with certain loans made to the Company in
1985. One of the Other Holders,  Jay Levy, is one of the founders of the Company


                                     - 14 -
<PAGE>
and currently  serves as the Chairman of the Board of Directors and Treasurer of
the Company. Mr. Levy acquired the 109,350 shares of Common Stock offered hereby
on June 21, 1994 for  $150,000  upon the  exercise of a stock  option  which was
granted to him in  connection  with a loan by him to the  Company  in 1984.  The
table  below sets  forth  certain  information  with  respect to the  beneficial
ownership of Common  Stock and number of shares of Common Stock  offered by each
Other Holder.

         This Prospectus  covers any additional shares of Common Stock that are
issued  pursuant to the  conversion  of the  Debentures  or the  exercise of the
Warrants,  the Options and the other  outstanding  warrants  described herein by
reason of the anti-dilution provisions thereof.

          Other than as described  above,  none of the Selling  Shareholders has
had any position,  office or other material relationship with the Company or any
of its  predecessors  or affiliates  within the past three years.  The following
table sets forth as of June 15, 1996, with respect to each Selling  Shareholder:
name, number of shares of Common Stock  beneficially owned (including any shares
into  which  the  Debentures  are  immediately  convertible  and for  which  the
Warrants,  Options and other outstanding warrants are immediately  exercisable),
number of shares of Common  Stock to be  offered  and number of shares of Common
Stock to be held following the offering,  assuming the sale of all of the Common
Stock offered  hereby.  The Company may amend or supplement this Prospectus from
time to time to update the  disclosure set forth herein or to disclose the names
and relationships to the Company of additional Selling  Shareholders  (including
persons or entities who may be  transferees  of the Selling  Shareholders  named
below) and the holdings of Common Stock of such additional Selling Shareholders.


                                     - 15 -
<PAGE>
<TABLE>
<CAPTION>
                                               Beneficial Ownership of            Shares of Common           Beneficial Ownership of
                                                Common Stock Prior to                Stock Being                Common Stock After
                                                       Offering                        Offered                       Offering

Name                                            Number            Percent              Number                  Number       Percent 
- ----                                            ------            -------              ------                  ------       ------- 
<S>                                            <C>                   <C>              <C>                           <C>        <C>
Debenture Holders:                                                                                                                 
                                                                                                                                   
Nelson Partners(1)                             2,397,391             8.4              2,397,391                      0          *   
Olympus Securities, Ltd.(2)                      697,174             2.6                697,174                      0          *   
                                                                                                                                   
                                                                                                                                   
Warrantholders:                                                                                                                    
                                                                                                                                   
DeJufra, Inc.                                    123,536              *                 123,536                      0          *   
Patrick Tedesco                                  224,000              *                 224,000                      0          *   
Paul Weber                                       217,500              *                 217,500                      0          *   
Bishop Rosen & Co., Inc.                         107,500              *                 107,500                      0          *   
Annette North                                     84,000              *                  84,000                      0          *   
Richard Kripaitis                                101,000              *                 101,000                      0          *   
Cornerstone Capital, Inc.                         70,000              *                  70,000                      0          *   
Thomas Redington                                 400,000             1.5                400,000                      0          *   
Michael C. Kendrick                              184,750              *                 184,750                      0          *   
P. Bradford Hathorn                               20,000              *                  20,000                      0          *   
Lance T. Bury                                     20,000              *                  20,000                      0          *   
Gerald D. Harris                                   5,000              *                   5,000                      0          *   
Enigma Investments Limited                        12,500              *                  12,500                      0          *   
Charles Krusen                                    17,000              *                  17,000                      0          *   
Eric S. Swartz                                   184,750              *                 184,750                      0          *   
David K. Peteler                                   5,000              *                   5,000                      0          *   
Dwight B. Bronnum                                  2,500              *                   2,500                      0          *   
Robert L. Hopkins                                  2,500              *                   2,500                      0          *   
MicroCap Fund, Inc.                              615,000             2.3                615,000                      0          *   
Mark A. Giudice                                   25,000              *                  25,000                      0          *
Dr. Charles Goldberg                              10,000              *                  10,000                      0          *
Vincent J. Ricciardi                              25,000              *                  25,000                      0          *
Reseau de Voyages Sterling, Inc.               1,000,000             3.7              1,000,000                      0          *   
                                                                                                                            

Optionholders:

Agnes Vignery, M.D.(3)                           110,000              *                 110,000                      0          *
Marvin Moser                                       5,000              *                   5,000                      0          *

                                     - 16 -
<PAGE>
<CAPTION>
                                               Beneficial Ownership of            Shares of Common           Beneficial Ownership of
                                                Common Stock Prior to                Stock Being                Common Stock After
                                                       Offering                        Offered                       Offering

Name                                            Number            Percent              Number                  Number       Percent 
- ----                                            ------            -------              ------                  ------       ------- 
<S>                                            <C>                   <C>              <C>                           <C>        <C>
Private Placement Stockholders:

H.T. Ardinger, Jr.                               250,000              *                 250,000                      0          *
Jerome Berkowitz                                  40,000              *                  40,000                      0          *
James Sanderson                                   50,000              *                  50,000                      0          *
Richard Garrett                                   10,000              *                  10,000                      0          *
Stanley Aber                                      12,000              *                   6,000                  6,000          *
Michael Samuel                                    14,565              *                   5,000                  9,565          *
Sylvia Bond                                       25,000              *                  25,000                      0          *
Leonard Leff                                      48,500              *                  25,000                 23,500          *
Herb Fisher Trust                                150,000              *                  50,000                100,000          *
Richard Scagnelli                                  5,000              *                   5,000                      0          *
Richard & Vilma Scagnelli (Jt. Ten.)              30,000              *                   5,000                 25,000          *
Hamdi A. Al-Alami                                100,000              *                 100,000                      0          *
Manny Siegman                                     50,000              *                  50,000                      0          *
Raymond Sales                                    267,000             1.0                 55,000                212,000          *
Benedict Morelli                                 165,000              *                  20,000                145,000          *
Charles A. Barnes, Jr. Trust                      76,300              *                  20,000                 56,300          *
Douglas Tygielski                                119,800              *                 110,000                  9,800          *


Other Holders:

Kien-Tsai Chen                                    10,000              *                  10,000                      0          *
Jay Levy(4)                                      439,950             1.7                109,350                330,600         1.3
A. Martin Randall                                 50,000              *                  20,000                 30,000          *
Mario Taverna                                    334,250             1.3                 60,750                273,500         1.0
</TABLE>
- --------------------
* Less than one percent.

(1)  Includes   2,217,391  shares   immediately   issuable  upon  conversion  of
     Debentures  and  180,000  shares  immediately  issuable  upon  exercise  of
     outstanding warrants.

(2)  Includes 652,174 shares immediately  issuable upon conversion of Debentures
     and  45,000  shares  immediately  issuable  upon  exercise  of  outstanding
     warrants.

(3)  Includes  100,000  shares  issuable to Dr.  Vignery  upon  satisfaction  of
     certain conditions.

(4)  Does not include  200,000  shares of Common  Stock held by a trust in which
     Mr. Levy has a pecuniary interest.


                                     - 17 -
<PAGE>
                              PLAN OF DISTRIBUTION

         The purpose of this  Prospectus is to permit the Selling  Shareholders,
if they  desire,  to  dispose  of some or all of the shares at such times and at
such prices as they choose. Whether sales of shares will be made, and the timing
and  amount of any sale  made,  is within  the sole  discretion  of the  Selling
Shareholders.

         The Common  Stock  covered by this  Prospectus  may be offered for sale
from time to time by the  Selling  Shareholders  to or through  underwriters  or
directly  to  other   purchasers  or  through  agents  in  one  or  more  market
transactions,  in one or more private  transactions  or in a combination of such
methods of sale, at prices then prevailing,  at prices related to such prices or
at  negotiated  prices.  Such  methods  of  distribution  may  include,  without
limitation: (a) a block trade in which the broker-dealer so engaged will attempt
to sell the Common  Stock as agent but may  position and resell a portion of the
block  as  a  principal  to  facilitate  the  transaction;  (b)  purchases  by a
broker-dealer  as a  principal  and  resale  by such  broker-dealer  for its own
account pursuant to this  Prospectus;  (c) ordinary  brokerage  transactions and
transactions  in which the  broker  solicits  purchasers;  and (d)  face-to-face
transactions  between  sellers and purchasers  without a broker or dealer.  This
Prospectus  may be  amended  and  supplemented  from time to time to  describe a
specific plan of distribution.

         In connection with distributions of the Common Stock or otherwise,  the
Selling  Shareholders may enter into hedging transactions with broker-dealers or
other   financial   institutions.   In   connection   with  such   transactions,
broker-dealers  or other  financial  institutions  may engage in short  sales of
Common  Stock in the course of hedging the  positions  they assume with  Selling
Shareholders.  The Selling  Shareholders  may also sell  Common  Stock short and
redeliver the shares to close out such short positions. The Selling Shareholders
may also enter into options or other  transactions with  broker-dealers or other
financial  institutions  which  require the  delivery to such  broker-dealer  or
financial  institution  of the Common Stock offered  hereby,  which Common Stock
such  broker-dealer or other financial  institutions may resell pursuant to this
Prospectus (as supplemented or amended to reflect such transaction). The Selling
Shareholders may also pledge the shares registered  hereunder to a broker-dealer
or other financial  institution and, upon a default, such broker-dealer or other
financial  institution  may effect sales of the pledged Common Stock pursuant to
this  Prospectus (as  supplemented or amended to reflect such  transaction).  In
addition,  any Common Stock covered by this  Prospectus  that qualifies for sale
pursuant to Rule 144 under the  Securities Act may be sold under Rule 144 rather
than pursuant to this Prospectus.

         Brokers,  dealers or agents  may  receive  compensation  in the form of
commissions, discounts or concessions from Selling Shareholders in amounts to be
negotiated in connection with sales pursuant hereto. Such brokers or dealers and
any other  participating  brokers or dealers may be deemed to be  "underwriters"
within the meaning of the Securities  Act in connection with such sales and any
such  commission,  discount  or  concession  may be  deemed  to be  underwriting
discounts or commissions under the Securities Act.







                                     - 18 -
<PAGE>
          Certain costs,  expenses and fees in connection with the  registration
of the Common Stock will be borne by the  Company.  Commissions,  discounts  and
transfer  taxes,  if any,  attributable to the sales of the Common Stock will be
borne by the  Selling  Shareholders.  Certain of the Selling  Shareholders  have
agreed or may agree to indemnify the Company or any underwriter, as the case may
be, and any of their respective affiliates,  directors, officers and controlling
persons,  against  certain  liabilities  in connection  with the offering of the
Common Stock pursuant to this Prospectus,  including  liabilities  arising under
the  Securities  Act.  In  addition,  the  Company  has in some cases  agreed to
indemnify the Selling  Shareholders or any underwriter,  as the case may be, and
any of their respective affiliates, directors, officers and controlling persons,
against certain  liabilities in connection with the offering of the Common Stock
pursuant to this Prospectus,  including liabilities arising under the Securities
Act.

         The  Company has agreed to supply the  Selling  Shareholders  with such
number of copies of this Prospectus as they may reasonably request.  The Selling
Shareholders  will in all cases be responsible for complying with the prospectus
delivery  requirements  of Section  5(b)(2) of the  Securities Act in connection
with the offering and sale of the shares.


                                  LEGAL MATTERS

         Certain legal matters in connection with the securities  offered hereby
are being passed upon for the Company by Covington & Burling,  Washington,  D.C.
and by Becker Ross Stone DeStefano & Klein,  New York, N.Y. The wife of James J.
Ross,  an  attorney  who is of counsel to Becker  Ross Stone  DeStefano & Klein,
holds a one-third interest in a family partnership which is the beneficial owner
of 18,225 shares of the Company's Common Stock.


                                     EXPERTS

         The audited financial  statements of Unigene  Laboratories,  Inc. as of
December  31,  1995 and 1994 and for each of the years in the three year  period
ended December 31, 1995  incorporated  by reference in this Prospectus have been
incorporated  by  reference  herein  in  reliance  upon the  report of KPMG Peat
Marwick LLP, independent certified public accountants, incorporated by reference
herein,  and upon the  authority  of said  firm as  experts  in  accounting  and
auditing.
                                    - 19 -
<PAGE>
                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS



Item 14.  Other Expenses of Issuance and Distribution*

         The expenses  payable by the Registrant in connection with the issuance
and  distribution  of  the  securities  being  registered   hereby  (other  than
underwriting discounts and commissions) are set forth below:


Securities and Exchange Commission Registration Fee.................. $ 12,312
Nasdaq Listing Fee...................................................   34,020
Blue Sky Fees and Expenses...........................................        0
Accounting Fees and Expenses.........................................    2,000
Legal Fees and Expenses..............................................   35,000
Registrar and Transfer Agent's Fees and Expenses.....................        0
Miscellaneous Expenses...............................................    1,000
Printing Costs.......................................................        0

                   Total ............................................ $ 84,332

- ----------------------------------
*Except for the  Securities  and Exchange  Commission  registration  fee and the
 Nasdaq listing fee all expenses are estimated.



Item 15.  Indemnification of Directors and Officers

         Article VI of the Company's  By-Laws  requires the Company to indemnify
each of its  directors  and  officers to the extent  permitted  by the  Delaware
General  Corporation  Law (the "DGCL").  Section 145 of the DGCL provides that a
corporation may indemnify any person, including any officer or director, who was
or is a party or who is threatened to be made a party to any threatened, pending
or completed action, suit or proceeding, whether civil, criminal, administrative
or investigative  (other than an action by or in the right of the  corporation),
by reason of the fact that he is or was a director,  officer,  employee or agent
of the  corporation or is or was serving at the request of the  corporation as a
director, officer, employee or agent of another corporation,  partnership, joint
venture,  trust or other  enterprise,  against  expenses  (including  attorneys'
fees), judgments, fines and amounts paid in settlement,  actually and reasonably
incurred by such person, if he acted in good faith and in a manner he reasonably
believed to be in or not opposed to the best interests of the  corporation  and,
with respect to any criminal  action or proceeding,  had no reasonable  cause to
believe his conduct was unlawful.  In any threatened pending or completed action
by or in the right of the  corporation,  a  corporation  also may  indemnify any
director,  officer, employee or agent for costs actually and reasonably incurred
by him in connection  with the defense or settlement of the action,  if he acted
in good faith and in a manner reasonably believed to be in or not opposed to the
best interests of the corporation;  however, no indemnification may be made with
respect to any claim,  issue or matter as to which such  person  shall have been
adjudged to be liable to the  corporation,  unless and only to the extent that a
court shall determine that such indemnity is proper. Where a director,  officer,


                                      II-1
<PAGE>
employee or agent is successful on the merits or otherwise in the defense of any
action  referred to above,  the corporation is required to indemnify such person
against  the  expenses  (including  attorneys'  fees)  actually  and  reasonably
incurred.

         The Company's Certificate of Incorporation  provides that its directors
shall not be liable for monetary  damages to the Company or its stockholders for
breach of the directors' fiduciary duty as directors.  However, each director is
subject to liability for breach of the director's duty of loyalty to the Company
or its  stockholders,  for acts or  omissions  not in good  faith  or  involving
intentional  misconduct  or knowing  violations  of law, for actions  leading to
improper  personal  benefit to the  director,  and for payment of  dividends  or
approval of stock  repurchases or  redemptions  that are unlawful under Delaware
law.


Item 16.  Exhibits

4.1      Certificate   of   Incorporation   and  Amendments  to  Certificate  of
         Incorporation  (incorporated  by reference to Exhibits 3.1 and 3.1.1 to
         Company's Registration Statement No. 33-6877 on Form S-1).

4.2      By-Laws.

5.1      Opinion of  Covington  & Burling as to the  legality  of certain of the
         shares being  registered.

5.2      Opinion of Becker Ross Stone  DeStefano  & Klein as to the  legality of
         certain of the shares being registered.

23.1     Consent of Independent Certified Public Accountants.

23.2     Consent of Covington & Burling  (included  in opinion  filed as Exhibit
         5.1).

23.3     Consent of Becker  Ross Stone  DeStefano & Klein  (included  in opinion
         filed as Exhibit 5.2).

24.1     Powers of Attorney of Directors of Unigene Laboratories, Inc.*

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

*        Previously Filed

Item 17.  Undertakings

         The undersigned Registrant hereby undertakes:

         (1)      To file,  during any period in which offers or sales are being
                  made,  a   post-effective   amendment   to  the   Registration
                  Statement:

                  (i)      To  include  any   prospectus   required  by  section
                           10(a)(3) of the Securities Act of 1933;


                                      II-2
<PAGE>
                  (ii)     To  reflect  in the  prospectus  any  facts or events
                           arising after the effective date of the  registration
                           statement   (or  the   most   recent   post-effective
                           amendment  thereof)  which,  individually  or in  the
                           aggregate,  represent  a  fundamental  change  in the
                           information set forth in the registration  statement.
                           Notwithstanding   the  foregoing,   any  increase  or
                           decrease  in volume  of  securities  offered  (if the
                           total dollar value of  securities  offered  would not
                           exceed that which was  registered)  and any deviation
                           from  the low or high  end of the  estimated  maximum
                           offering  range  may  be  reflected  in the  form  of
                           prospectus filed with the Commission pursuant to Rule
                           424(b) if, in the  aggregate,  the  changes in volume
                           and price  represent no more than a 20% change in the
                           maximum  aggregate  offering  price  set forth in the
                           "Calculation  of  Registration   Fee"  table  in  the
                           effective registration statement.

                  (iii)    To include any material  information  with respect to
                           the plan of distribution not previously  disclosed in
                           the registration  statement or any material change to
                           such information in the registration statement;

                  Provided, however, That paragraphs (a)(1)(i) and (a)(1)(ii) of
                  this  section do not apply if the  information  required to be
                  included in a post-effective  amendment by those paragraphs is
                  contained in periodic  reports  filed with or furnished to the
                  Commission by the Registrant pursuant to section 13 or section
                  15(d)  of  the  Securities  Exchange  Act  of  1934  that  are
                  incorporated by reference in the registration statement.

         (2)      That, for the purpose of determining  any liability  under the
                  Securities  Act of 1933,  each such  post-effective  amendment
                  shall be deemed to be a new registration statement relating to
                  the  securities  offered  therein,  and the  offering  of such
                  securities at that time shall be deemed to be the initial bona
                  fide offering thereof.

         (3)      To  remove  from  registration  by means  of a  post-effective
                  amendment any of the securities  being registered which remain
                  unsold at the termination of the offering.

         The  undersigned  Registrant  hereby  undertakes  that, for purposes of
determining  any liability  under the Securities Act of 1933, each filing of the
Registrant's  annual  report  pursuant to section  13(a) or section 15(d) of the
Securities  Exchange  Act of 1934  (and,  where  applicable,  each  filing of an
employee  benefit  plan's  annual  report  pursuant  to  Section  15(d)  of  the
Securities  Exchange  Act of 1934)  that is  incorporated  by  reference  in the
Registration  Statement  shall  be  deemed  to be a new  Registration  Statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.






                                      II-3
<PAGE>
         Insofar as indemnification for liabilities arising under the Securities
Act of 1933  ("Act") may be  permitted  to  directors,  officers or  controlling
persons of the Registrant by charter,  by-law,  contract,  statute or otherwise,
the  Registrant  has been advised  that,  in the opinion of the  Securities  and
Exchange Commission,  such indemnification is against public policy as expressed
in the Act and is,  therefore,  unenforceable.  In the  event  that a claim  for
indemnification  against  such  liabilities  (other  than  the  payment  by  the
Registrant of expenses  incurred or paid by a director,  officer or  controlling
person of the  Registrant  in the  successful  defense  of any  action,  suit or
proceeding)  is  asserted by such  director,  officer or  controlling  person in
connection with the securities being registered,  the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification  by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.


                                      II-4
<PAGE>
                                   SIGNATURES


          Pursuant to the  requirements  of the Securities Act of 1933 certifies
that it has reasonable  grounds to believe that it meets all of the requirements
for filing on Form S-3 and the  Registrant  has duly caused this Amendment No. 1
to the  Registration  Statement  to be signed on its  behalf by the  undersigned
thereunto duly authorized,  in Fairfield,  New Jersey,  on the 28th day of June,
1996.


                                     UNIGENE LABORATORIES, INC.


                                     By /s/ WARREN P. LEVY
                                        ----------------------------
                                        Warren P. Levy, President











                                      II-5
<PAGE>
         Pursuant to the requirements of the Securities Act of 1933, as amended,
this  Registration  Statement has been signed below by the following  persons in
the capacities and on the dates indicated:

Signature
- ---------
Title
- -----
Date
- ----


/s/ WARREN P. LEVY
- ----------------------------------
Warren P. Levy


Director, President
(principal executive officer)


June 28, 1996


/s/ RONALD S. LEVY
- ----------------------------------
Ronald S. Levy

Director, Vice President

June 28, 1996


/s/ JAY LEVY
- ----------------------------------
Jay Levy

Chairman of the Board of Directors,
Treasurer (principal financial and
accounting officer)

June 28, 1996



                                      II-6
<PAGE>
* 
- ----------------------------------
Robert Ruark

Director

June 28, 1996

*
- ----------------------------------
George M. Weimer

Director

June 28, 1996

*By  /s/ RONALD S. LEVY
     ----------------------------------
     Ronald S. Levy

     Attorney-in-Fact

     June 28, 1996








                                      II-7

                                    BY - LAWS
                                       OF
                           UNIGENE LABORATORIES, INC.

                               ARTICLE I - OFFICES

           SECTION  1.  REGISTERED   OFFICE.  The  registered  office  shall  be
established and maintained at 100 West Tenth Street,  Wilmington,  in the County
of New Castle, in the State of Delaware.

           SECTION 2. OTHER  OFFICES.  The  corporation  may have other offices,
either  within or without the State of Delaware,  at such place or places as the
Board  of  Directors  may  from  time to time  appoint  or the  business  of the
corporation may require.

                      ARTICLE II - MEETING OF STOCKHOLDERS

           SECTION 1. ANNUAL  MEETINGS.  Annual meetings of stockholders for the
election of directors and for such other business as may be stated in the notice
of the meeting,  shall be held at such place, either within or without the State
of Delaware, and at such time and date as the Board of Directors, by resolution,
shall determine and as set forth in the notice of the meeting.  In the event the
Board of Directors  fails to so determine  the time,  date and place of meeting,
the annual meeting of stockholders shall be held at the registered office of the
corporation in Delaware on the 20th day of January at 11:00 A.M.

           If the date of the annual  meeting  shall fall upon a legal  holiday,
Saturday or Sunday,  the meeting shall be held on the next  succeeding  business
day. At each annual  meeting,  the  stockholders  entitled to vote shall elect a
Board of Directors  and may transact such other  corporate  business as shall be
stated in the notice of the meeting.

           SECTION 2. OTHER MEETINGS.  Meetings of stockholders  for any purpose
other than the election of directors may be held at such time and place,  within
or  without  the State of  Delaware,  as shall be  stated  in the  notice of the
meeting.

           SECTION 3. VOTING.  Each  stockholder  entitled to vote in accordance
with the terms and  provisions of the  Certificate  of  Incorporation  and these
By-Laws shall be entitled to one vote, in person or by proxy,  for each share of
stock  entitled  to vote held by such  stockholder,  but no proxy shall be voted
after three years from its date unless such proxy  provides for a longer period.
Upon the demand of any stockholder, the vote for directors and upon any question
before the meeting shall be by ballot.  All  elections  for  directors  shall be
decided by plurality vote; all other questions shall be decided by majority vote
except as otherwise  provided by the Certificate of Incorporation or the laws of
the State of Delaware.

           SECTION 4. STOCKHOLDER  LIST. The officer who has charge of the stock
ledger  of the  corporation  shall at  least  10 days  before  each  meeting  of
stockholders prepare a complete alphabetical  addressed list of the stockholders
entitled  to vote at the  ensuing  election,  with the number of shares  held by
<PAGE>
each.  Said list shall be open to the  examination of any  stockholder,  for any
purpose germane to the meeting,  during ordinary business hours, for a period of
at least ten days prior to the meeting,  either at a place within the city where
the meeting is to be held,  which place shall be  specified in the notice of the
meeting, or, if not so specified,  at the place where the meeting is to be held.
The list shall be available for inspection at the meeting.

           SECTION  5.  QUORUM.  Except as  otherwise  required  by law,  by the
Certificate of Incorporation or by these By-Laws, the presence,  in person or by
proxy,  of  stockholders  holding a  majority  of the  stock of the  corporation
entitled to vote shall constitute a quorum at all meetings of the  stockholders.
In case a quorum shall not be present at any meeting,  a majority in interest of
the stockholders entitled to vote thereat,  present in person or by proxy, shall
have power to adjourn the meeting from time to time,  without  notice other than
announcement  at the meeting,  until the requisite  amount of stock  entitled to
vote shall be  present.  At any such  adjourned  meeting at which the  requisite
amount of stock  entitled  to vote shall be  represented,  any  business  may be
transacted which might have been transacted at the meeting as originally noticed
but only  those  stockholders  entitled  to vote at the  meeting  as  originally
noticed shall be entitled to vote at any adjournment or adjournments thereof.

           SECTION 6. SPECIAL  MEETINGS.  Special meetings of the  stockholders,
for any purpose, unless otherwise prescribed by statute or by the Certificate of
Incorporation,  may be  called  by the  president  and  shall be  called  by the
president or secretary at the request in writing of a majority of the  directors
or  stockholders  entitled to vote.  Such request shall state the purpose of the
proposed meeting.

           SECTION 7. NOTICE OF  MEETINGS.  Written  notice,  stating the place,
date and time of the  meeting,  and the  general  nature of the  business  to be
considered,  shall be given to each stockholder  entitled to vote thereat at his
address as it appears on the records of the  corporation,  not less than ten nor
more than sixty days before the date of the meeting.

           SECTION 8. BUSINESS TRANSACTED. No business other than that stated in
the notice shall be transacted at any meeting  without the unanimous  consent of
all the stockholders entitled to vote thereat.

           SECTION 9. ACTION WITHOUT MEETING.  Unless otherwise  provided by the
Certificate of  Incorporation,  any action required to be taken at any annual or
special meeting of stockholders,  or any action which may be taken at any annual
or special  meeting,  may be taken  without a meeting,  without prior notice and
without a vote,  if a consent  in  writing,  setting  forth the action so taken,
shall be signed by the  holders of  outstanding  stock  having not less than the
minimum number of votes that would be necessary to authorize or take such action
at a meeting at which all shares  entitled  to vote  thereon  were  present  and
voted.  Prompt notice of the taking of the corporate action without a meeting by
less than unanimous  written  consent shall be given to those stock- holders who
have not consented in writing.

                             ARTICLE III - DIRECTORS 

           SECTION 1.  NUMBER  AND TERM.  The number of  directors  which  shall
constitute  the Board of Directors of the  Corporation  shall be specified  from
time to time by  resolution of the Board of  Directors.  The directors  shall be
 
                                   -2-
<PAGE>
elected at the annual  meeting of the  stockholders  and each director  shall be
elected to serve until his  successor  shall be elected and shall  qualify.  The
number of directors  may not be less than three except that where all the shares
of the  corporation  are owned  beneficially  and of record by either one or two
stockholders,  the number of directors  may be less than three but not less than
the number of stockholders. Directors need not be stockholders.

           SECTION 2. RESIGNATIONS. Any director, member of a committee or other
officer may resign at any time. Such resignation  shall be made in writing,  and
shall take effect at the time specified therein, and if no time be specified, at
the time of its receipt by the  President  or  Secretary.  The  acceptance  of a
resignation shall not be necessary to make it effective.

           SECTION  3.  VACANCIES.  If the office of any  director,  member of a
committee or other officer  becomes vacant,  the remaining  directors in office,
though less than a quorum by a majority vote,  may appoint any qualified  person
to fill such vacancy, who shall hold office for the unexpired term and until his
successor shall be duly chosen.

           SECTION 4. REMOVAL.  Any director or directors may be removed  either
for or without  cause at any time by the  affirmative  vote of the  holders of a
majority  of all the shares of stock  outstanding  and  entitled  to vote,  at a
special  meeting of the  stockholders  called for the purpose and the  vacancies
thus created may be filled,  at the meeting held for the purpose of removal,  by
the affirmative vote of a majority in interest of the  stockholders  entitled to
vote.

           SECTION  5.  INCREASE  OF  NUMBER.  The  number of  directors  may be
increased by amendment of these By-Laws by the affirmative vote of a majority of
the  directors,  though  less than a quorum,  or, by the  affirmative  vote of a
majority in interest of the stockholders,  at the annual meeting or at a special
meeting called for that purpose,  and by like vote the additional  directors may
be chosen at such  meeting to hold  office  until the next annual  election  and
until their successors are elected and qualify.

           SECTION  6.  COMPENSATION.  Directors  shall not  receive  any stated
salary for their  services  as  directors  or as members of  committees,  but by
resolution  of the board a fixed fee and expenses of  attendance  may be allowed
for attendance at each meeting.  Nothing herein  contained shall be construed to
preclude any director from serving the  corporation  in any other capacity as an
officer, agent or otherwise, and receiving compensation therefor.

           SECTION  7.  MEETINGS  BY  CONFERENCE  CALL.  Members of the Board of
Directors,  or any  committee  designated  by the Board,  may  participate  in a
meeting of the Board or any such  committee by means of conference  telephone or
similar communications  equipment by means of which all persons participating in
the meeting can hear each other, and participation in the meeting in this manner
shall constitute presence in person at such meeting.

           SECTION 8. POWERS.  The Board of Directors  shall exercise all of the
powers of the  Corporation  except such as are by law, or by the  Certificate of
Incorporation of the corporation or by these By-Laws  conferred upon or reserved
to the stockholders.

 


                                     -3-
<PAGE>
           SECTION 9. ACTION WITHOUT  MEETING.  Any action required or permitted
to be taken  at any  meeting  of the  Board of  Directors,  or of any  committee
thereof,  may be taken  without  a  meeting,  if prior to such  action a written
consent  thereto is signed by all members of the Board,  or of such committee is
the case  may be,  and such  written  consent  is  filed  with  the  minutes  of
proceedings of the board or committee.

                              ARTICLE IV - OFFICERS

           SECTION 1. OFFICERS. The officers of the corporation shall consist of
a President, a Treasurer,  and a Secretary, and shall be elected by the Board of
Directors  and  shall  hold  office  until  their  successors  are  elected  and
qualified. In addition, the Board of Directors may elect a Chairman, one or more
Vice- Presidents and such Assistant  Secretaries and Assistant  Treasurers as it
may deem proper. None of the officers of the corporation need be directors.  The
officers  shall be elected at the first meeting of the Board of Directors  after
each annual meeting. More than two offices may be held by the same person.

           SECTION 2. OTHER  OFFICERS  AND AGENTS.  The Board of  Directors  may
appoint such officers and agents as it may deem advisable,  who shall hold their
offices for such terms and shall  exercise such power and perform such duties as
shall be determined from time to time by the Board of Directors.

           SECTION 3. CHAIRMAN. The Chairman of the Board of Directors if one be
elected,  shall  preside at all meetings of the Board of Directors  and he shall
have and perform  such other  duties as from time to time may be assigned to him
by the Board of Directors.

           SECTION 4.  PRESIDENT.  The  President  shall be the chief  executive
officer  of the  corporation  and shall  have the  general  powers and duties of
supervision  and  management  usually  vested in the  office of  President  of a
corporation.  He shall  preside at all meetings of the  stockholders  if present
thereat,  and in the  absence or  non-election  of the  Chairman of the Board of
Directors,  at all  meetings of the Board of  Directors,  and shall have general
supervision, direction and control of the business of the corporation. Except as
the Board of  Directors  shall  authorize  the  execution  thereof in some other
manner, he shall execute bonds, mortgages,  and other contracts in behalf of the
corporation,  and shall cause the seal to be affixed to any instrument requiring
it and when so  affixed  the seal  shall be  attested  by the  signature  of the
Secretary or the Treasurer or an Assistant Secretary or an Assistant Treasurer.

           SECTION 5. VICE-PRESIDENT. Each Vice-President shall have such powers
and shall perform such duties as shall be assigned to him by the directors.

           SECTION 6.  TREASURER.  The  Treasurer  shall have the custody of the
corporate  funds and  securities  and shall  keep full and  accurate  account of
receipts  and  disbursements  in books  belonging to the  corporation.  He shall
deposit  all  moneys  and other  valuables  in the name and to the credit of the
corporation in such depositories as may be designated by the Board of Directors.
The Treasurer  shall disburse the funds of the  corporation as may be ordered by
the Board of  Directors,  or the  President,  taking  proper  vouchers  for such
disbursements.  He shall render to the  President  and Board of Directors at the
regular meetings of the Board of Directors,  or whenever they may request it, an
account of all his  transactions as Treasurer and of the financial  condition of
the  corporation.  If  required  by the Board of  Directors,  he shall  give the
corporation  a bond for the faithful  discharge of his duties in such amount and
with such surety as the board shall prescribe.

                                      -4-
<PAGE>
           SECTION 7. SECRETARY. The Secretary shall give, or cause to be given,
notice of all meetings of  stockholders  and  directors,  and all other  notices
required  by law or by these By- Laws,  and in case of his absence or refusal or
neglect so to do, any such notice may be given by any person thereunto  directed
by the President, or by the directors,  or stockholders,  upon whose requisition
the  meeting is called as  provided in these  By-Laws.  He shall  record all the
proceedings of the meetings of the  corporation and of directors in a book to be
kept  for  that  purpose.  He  shall  keep  in  safe  custody  the  seal  of the
corporation,  and when  authorized by the Board of Directors,  affix the same to
any  instrument  requiring it, and when so affixed,  it shall be attested by his
signature or by the signature of any Assistant Secretary.

           SECTION 8. ASSISTANT TREASURERS AND ASSISTANT SECRETARIES.  Assistant
Treasurers  and Assistant  Secretaries,  if any, shall be elected and shall have
such  powers  and  shall  perform  such  duties  as shall be  assigned  to them,
respectively, by the directors.

                                    ARTICLE V

           SECTION  1.  CERTIFICATES  OF  STOCK.  Every  holder  of stock in the
corporation  shall be entitled to have a certificate,  signed by, or in the name
of the corporation by, the Chairman or Vice- Chairman of the Board of Directors,
or the  President  or a  Vice-  President  and  the  Treasurer  or an  Assistant
Treasurer, or the Secretary of the corporation,  certifying the number of shares
owned by him in the corporation. If the corporation shall be authorized to issue
more  than one  class  of  stock or more  than  one  series  of any  class,  the
designations, preferences and relative, participating, optional or other special
rights  of each  class  of  stock  or  series  thereof  and the  qualifications,
limitations,  or  restrictions  of such  preferences  and/or rights shall be set
forth in full or  summarized  on the face or back of the  certificate  which the
corporation  shall issue to  represent  such class of series of stock,  provided
that, except as otherwise provided in section 202 of the General Corporation Law
of Delaware,  in lieu of the foregoing  requirements,  there may be set forth on
the  face or back of the  certificate  which  the  corporation  shall  issue  to
represent such class or series of stock, a statement that the  corporation  will
furnish  without  charge  to  each  stockholder  who  so  requests  the  powers,
designations, preferences and relative, participating, optional or other special
rights  of each  class  of  stock  or  series  thereof  and the  qualifications,
limitations  or  restrictions  of  such  preferences  and/or  rights.   Where  a
certificate is countersigned  (1) by a transfer agent other than the corporation
or its  employee,  or (2) by a  registrar  other  than  the  corporation  or its
employee, the signatures of such officers may be facsimiles.

           SECTION 2. LOST CERTIFICATES. New certificates of stock may be issued
in the place of any certificate  therefore issued by the corporation  alleged to
have been lost or destroyed, and the directors may, in their discretion, require
the owner of the lost or destroyed certificate or his legal representatives,  to
give the  corporation  a bond,  in such sum as they may  direct,  not  exceeding
double  the value of the  stock,  to  indemnify  the  corporation  against it on
account of the alleged loss of any such new certificate.

           SECTION 3. TRANSFER OF SHARES. The shares of stock of the corporation
shall be transferable only upon its books by the holders thereof in person or by
their duly authorized attorneys or legal representatives, and upon such transfer



                                      -5-
<PAGE>
the old  certificates  shall be surrendered  to the  corporation by the delivery
thereof to the person in charge of the stock and transfer books and ledgers,  or
to such other  persons as the  directors  may  designate,  by whom they shall be
cancelled,  and new  certificates  shall thereupon be issued.  A record shall be
made of each  transfer  and  whenever  a transfer  shall be made for  collateral
security,  and not  absolutely,  it shall be so  expressed  in the  entry of the
transfer.

           SECTION 4.  STOCKHOLDERS  RECORD DATE. In order that the  corporation
may determine the  stockholders  entitled to notice of or to vote at any meeting
of stockholders or any adjournment  thereof,  or to express consent to corporate
action in  writing  without a meeting,  or  entitled  to receive  payment of any
dividend  or other  distribution  or  allotment  of any  rights,  or entitled to
exercise any rights in respect of any change, conversion or exchange of stock or
for the purpose of any other lawful  action,  the Board of Directors may fix, in
advance a record date, which shall not be more than sixty nor less than ten days
before  the day of such  meeting,  nor more than  sixty  days prior to any other
action.  A  determination  of stockholders of record entitled to notice of or to
vote at a meeting of stockholders shall apply to any adjournment of the meeting;
provided, however, that the Board of Directors may fix a new record date for the
adjourned meeting.

           SECTION 5. DIVIDENDS. Subject to the provisions of the Certificate of
Incorporation  the  Board  of  Directors  may,  out of funds  legally  available
therefor at any regular or special meeting,  declare  dividends upon the capital
stock of the corporation as and when they deem expedient.  Before  declaring any
dividends there may be set apart out of any funds of the  corporation  available
for  dividends,  such sum or sums as the  directors  from  time to time in their
discretion   deem  proper  working   capital  or  as  a  reserve  fund  to  meet
contingencies  or for  equalizing  dividends  or for such other  purposes as the
directors shall deem conducive to the interests of the corporation.

           SECTION 6. SEAL.  The  corporate  seal shall be  circular in form and
shall  contain the name of the  corporation,  the year of its  creation  and the
words  "CORPORATE  SEAL  DELAWARE".  Said  seal may be used by  causing  it or a
facsimile thereof to be impressed or affixed or otherwise reproduced.

           SECTION 7. FISCAL YEAR. The fiscal year of the  corporation  shall be
determined by resolution of the Board of Directors.

           SECTION  8.  CHECKS.  All  checks,  drafts,  or other  orders for the
payment of money, notes or other evidences of indebtedness issued in the name of
the corporation  shall be signed by the officer or officers,  agent or agents of
the corporation,  and in such manner as shall be determined from time to time by
resolution of the Board of Directors.

           SECTION  9.  NOTICE  AND  WAIVER OF  NOTICE.  Whenever  any notice is
required  by these  By-Laws  to be given,  personal  notice is not meant  unless
expressly stated, and any notice so required shall be deemed to be sufficient if
given by  depositing  the  same in the  United  States  mail,  postage  prepaid,
addressed  to the person  entitled  thereto at his  address as it appears on the
records of the  corporation,  and such notice shall be deemed to have been given
on the day of such  mailing.  Stockholders  not  entitled  to vote  shall not be
entitled  to receive  notice of any  meetings  except as  otherwise  provided by
statute.
      

                               -6-
<PAGE>
           Whenever  any  notice  whatever  is  required  to be given  under the
provisions  of  any  law,  or  under  the  provisions  of  the   Certificate  of
Incorporation  of the corporation or these By-Laws,  a waiver thereof in writing
signed by the person or persons entitled to said notice, whether before or after
the time stated therein, shall be deemed proper notice.

                          ARTICLE VI - INDEMNIFICATION 

           The Corporation  shall  indemnify its officers and directors,  to the
extent permitted by the General Corporation Law of Delaware.

                            ARTICLE VII - AMENDMENTS

           These  By-Laws may be altered and repealed and By-Laws may be made at
any annual  meeting of the  stockholders  or at any special  meeting  thereof if
notice  thereof  is  contained  in the  notice of such  special  meeting  by the
affirmative  vote of a majority of the stock issued and  outstanding or entitled
to vote thereat,  or by the regular  meeting of the Board of  Directors,  at any
regular  meeting of the Board of  Directors,  or at any  special  meeting of the
Board of Directors, if notice thereof is contained in the notice of such special
meeting.

                                                                   June 28, 1996

Unigene Laboratories, Inc.
110 Little Falls Road
Fairfield, NJ 07004

Gentlemen:

                  This opinion is being  furnished to you in connection  with an
Amendment  No. 1 to a  Registration  Statement on Form S-3, File No.  333-04557
(along with the original filing, the "Registration Statement") being filed today
by Unigene Laboratories,  Inc., a Delaware corporation (the "Company"), with the
Securities and Exchange  Commission (the "Commission")  under the Securities Act
of 1933, as amended,  for the  registration for resale of up to 7,692,201 shares
of the Company's common stock, par value $.01 per share (the "Common Stock").

                  This opinion is limited to (i) the 2,217,391  shares of Common
Stock  issuable by the Company to Nelson  Partners  upon the  conversion  of the
Company's 9.5% Senior Secured Convertible  Debentures due November 15, 1998 (the
"Debentures")  held by Nelson Partners,  (ii) the 652,174 shares of Common Stock
issuable by the Company to Olympus  Securities,  Ltd. upon the conversion of the
Debentures  held by  Olympus  Securities,  Ltd.,  and (iii) the shares of Common
Stock issuable by the Company to the persons or entities  listed on Attachment A
hereto  (the  "Warrant  Holders"),  equal in number to the  number of shares set
forth on Attachment A opposite the names of the respective Warrant Holders, upon
the  exercise  of the  Company's  warrants,  dated  as of  March  6,  1996  (the
"Warrants"), held by such Warrant Holders.

                   For purposes of this opinion,  we have examined a signed copy
of the  Registration  Statement  and the exhibits  thereto,  the  Warrants,  the
Debentures, and the Amended and Restated Securities Purchase Agreement, dated as
of March 6, 1996,  among the Company,  Nelson  Partners and Olympus  Securities,
Ltd. We also have examined and relied upon a copy of the  Company's  Certificate
of Incorporation,  certified by the Secretary of State of the State of Delaware,
and copies of the Company's By-Laws and certain resolutions adopted by the Board
of  Directors  of the  Company,  certified  by the  Corporate  Secretary  of the
Company.  We further  have  examined  such other  documents  and made such other
investigations  as we have  deemed  necessary  to form a basis  for the  opinion
hereinafter expressed.

                  In  examining  the  foregoing  documents,  we have assumed the
authenticity of documents  submitted to us as originals,  the genuineness of all
signatures, the conformity to original documents of documents submitted to us as
copies, and the accuracy of the representations and statements included therein.

                  Based on the  foregoing,  we are of the opinion  that:  (i) an
aggregate  of 2,869,565  shares of Common Stock have been  reserved for issuance
upon  conversion of the  Debentures and 454,000 shares of Common Stock have been
reserved for issuance  upon  exercise of the  Warrants,  and (ii) such shares of
Common  Stock  have  been  duly  authorized  for  issuance,  respectively,  upon
conversion  of the  Debentures  and exercise of the  Warrants,  and, if and when
issued  and  delivered  by the  Company  in  accordance  with  the  terms of the
Debentures or the Warrants,  as applicable,  will be validly issued,  fully paid
and nonassessable.
<PAGE>

                  We hereby  consent to the filing of this opinion as an exhibit
to the Registration Statement and to the use of our name in the Prospectus under
the heading "Legal Matters."


                                                               Very truly yours,


                                                             COVINGTON & BURLING


<PAGE>
<TABLE>
<CAPTION>

                                  Attachment A
                                to Opinion dated
                                   June 28, 1996


          Warrant Holders:                                      Shares
          ----------------                                      ------
        <S>                                                    <C>
        Michael C. Kendrick                                    184,750
        P. Bradford Hathorn                                     20,000
        Lance T. Bury                                           20,000
        Gerald D. Harris                                         5,000
        Enigma Investments Limited                              12,500
        Charles Krusen                                          17,000
        Eric S. Swartz                                         184,750
        David K. Peteler                                         5,000
        Dwight B. Bronnum                                        2,500
        Robert L. Hopkins                                        2,500
                                                              --------
                                                               454,000
</TABLE>




                                                                   June 28, 1996



Unigene Laboratories, Inc.
110 Little Falls Road
Fairfield, NJ  07004


                     Re: Registration Statement on Form S-3
Gentlemen:

          We have acted as co-counsel for Unigene Laboratories, Inc., a Delaware
corporation  (the  "Company"),  in connection with the preparation and filing by
the Company of a Registration  Statement (the "Registration  Statement") on Form
S-3 under  the  Securities  Act of 1933,  as  amended,  relating  to the  public
offering by certain Selling  Shareholders,  from time to time of up to 7,692,201
shares of the Company's Common Stock, $.01 par value (the "Common Stock"),  plus
such  indeterminate  number of  additional  shares of Common  Stock  that may be
issuable from time to time pursuant to certain anti-dilution or other adjustment
provisions  under  the  warrants  and  options  described  in  the  Registration
Statement.

          This opinion is limited to the Selling  Stockholders  and their shares
of Common Stock listed in Schedules A, B, C, D and E attached hereto.

           826,000   shares  of  Common   Stock  were   issued  to  the  Selling
Stockholders  listed in Schedule A pursuant to Purchase  Agreements in a private
placement of the Common Stock commencing July 1995 and completed February, 1996.
Warrants to purchase 1,023,536 shares of Common Stock were issued to the Selling
Stockholders  listed in Schedule B in connection with the making of loans to the
Company by such Selling  Stockholders or their assignors in March and May, 1995.
Warrants to purchase 2,204,000 shares of Common Stock were issued to the Selling
Stockholders listed in Schedule C in consideration of certain financial services
performed  for the Company from October 1994 to April 1996.  Options to purchase
115,000 shares of Common Stock were issued to the Selling Stockholders listed in
Schedule  D between  January  1993 and April  1996 in  consideration  of certain
consulting services performed for the Company. 10,000 shares of Common Stock are
issuable  to Kien-Tsai Chen under an  agreement  dated  December  30,  1994 for
consultation services performed for the Company by him. 190,100 shares of Common
Stock were  issued to the  Selling  Stockholders  listed in  Schedule E upon the
exercise of stock options issued by the Company in connection with certain loans
to the  Company in 1984 and 1985.  The shares of Common  Stock to be issued upon
due exercise of the warrants and options held by the Selling Shareholders listed
in Schedules B, C and D are hereinafter referred to as Underlying Shares.

          We  have  examined  the  Registration   Statement,   the  Articles  of
Incorporation and By-Laws of the Company,  the minutes of  various meetings and
consents of the Board of Directors of the Company, Purchase Agreements,  Warrant
Agreements,  Option  Agreements,  Consulting and other agreements,  originals or
<PAGE>
copies of all such records of the  Company,  certificates  of public  officials,
certificates of officers and representatives of the Company and others, and such
other documents,  certificates,  records, authorizations,  proceedings, statutes
and  judicial  decisions  as we have deemed  necessary  to form the basis of the
opinion expressed below. In such examination, we have assumed the genuineness of
all signatures,  the authenticity of all documents  submitted to us as originals
and the  conformity  to  originals  of all  documents  submitted to us as copies
thereof.  As to various  questions  of fact  material to such  opinion,  we have
relied upon statements and certificates of officers and  representatives  of the
Company and others.

         Based upon the foregoing, we are of the opinion that:

                   1. The 826,000  shares of Common  Stock of the Company  which
have been issued under the Purchase  Agreements have been validly issued and are
fully paid and non-assessable.

                   2. The Underlying  Shares have been duly  authorized  and, if
and when the  applicable  options or warrants  are duly  exercised  and the said
Underlying  Shares are issued by the Company in accordance with the terms of the
applicable option or warrant  agreements,  the Underlying Shares will be validly
issued, fully paid and non- assessable.

                   3. The  10,000  shares of Common  Stock of the  Company to be
issued  to Mr.  Chen,  when  issued  will be  validly  issued,  fully  paid  and
non-assessable.

           4. The 190,100  shares of Common Stock of the Company which have been
issued  under the stock  option  agreements  referred to in Schedule E have been
validly issued and are fully paid and non-  assessable.  We hereby consent to be
named  in  the  Registration  Statement  and  in  the  related  Prospectus  (the
"Prospectus") as attorneys who have passed upon legal matters in connection with
the  offering  of the Common  Stock  under the  caption  "Legal  Matters" in the
Prospectus.  In giving this  consent,  we do not hereby admit that we are within
the  category  of persons  whose  consent  is  required  under  Section 7 of the
Securities  Act of  1933,  as  amended,  or the  rules  and  regulations  of the
Securities and Exchange Commission thereunder.

          We  further  consent  to your  filing of a copy of this  opinion as an
exhibit to the Registration Statement.


                                             Very truly yours,

                                             BECKER ROSS STONE DeSTEFANO & KLEIN



JM:DC
<PAGE>
<TABLE>
<CAPTION>

                                   SCHEDULE A



Private Placement Stockholders                                    Shares
- ------------------------------                                    ------
<S>                                                              <C>    
H. T. Ardinger, Jr ...........................................   250,000
Jerome Berkowitz .............................................    40,000
James Sanderson ..............................................    50,000
Richard Garrett ..............................................    10,000
Stanley Aber .................................................     6,000
Michael Samuel ...............................................     5,000
Sylvia Bond ..................................................    25,000
Leonard Leff .................................................    25,000
Herb Fisher Trust ............................................    50,000
Richard Scagnelli ............................................     5,000
Richard & Vilma Scagnelli (Jt. Ten.) .........................     5,000
Hamdi A. Al-Alami ............................................   100,000
Manny Siegman ................................................    50,000
Raymond Sales ................................................    55,000
Benedict Morelli .............................................    20,000
Charles A. Barnes, Jr. Trust .................................    20,000
Douglas Tygielski ............................................   110,000
</TABLE>





























                                   Schedule A
<PAGE>
                                   SCHEDULE B

<TABLE>
<CAPTION>

Warrantholders                                                       Shares
- --------------                                                       ------
<S>                                                               <C>  
DeJufra, Inc. ...................................................   123,536

Marco A. Giudice ................................................    25,000

Dr. Charles Goldberg ............................................    10,000

MicroCap Fund, Inc. .............................................   615,000

Nelson Partners .................................................   180,000

Vincent J. Ricciardi ............................................    25,000

Olympus Securities, Ltd. ........................................    45,000
                                                                  =========
                           Total ................................ 1,023,536

</TABLE>





























                                   Schedule B
<PAGE>
                                   SCHEDULE C

<TABLE>
<CAPTION>

                                 Warrantholders


         Name                                                     Shares
         ----                                                     ------
<S>                                                             <C>
Patrick Tedesco ...........................................       224,000
Paul Weber ................................................       217,500
Bishop Rosen & Co., Inc. ..................................       107,500
Annette North .............................................        84,000
Richard Kripaitis .........................................       101,000
Cornerstone Capital, Inc. .................................        70,000
Thomas Redington ..........................................       400,000
Reseau de Voyages Sterling, Inc. ..........................     1,000,000
                                                                =========
                           Total ..........................     2,204,000

</TABLE>




































                                   Schedule C
<PAGE>

                                   SCHEDULE D

                                 Option Holders

<TABLE>
<CAPTION>

       Name                                             Shares
       ----                                             ------
       <S>                                             <C>
       Agnes Vignery                                   110,000

       Marvin Moser                                      5,000
                                                       =======
                                                       115,000

</TABLE>







































                                   Schedule D
<PAGE>
                                   SCHEDULE E

                                 Option Holders
<TABLE>
<CAPTION>

       Name                                            Shares
       ---                                             ------
       <S>                                             <C>
       Jay Levy                                        109,350

       A. Martin Randall                                20,000

       Mario Taverna                                    60,750
                                                       =======
                                                       190,100

</TABLE>



                                   Schedule E

                                                                    EXHIBIT 23.1

CONSENT OF INDEPENDENT AUDITORS


The Board of Directors
Unigene Laboratories, Inc.:

         We consent  to the  incorporation  by  reference  in this  Registration
Statement  on Form S-3 of Unigene  Laboratories,  Inc. of our report dated March
22, 1996,  relating to the balance  sheets of Unigene  Laboratories,  Inc. as of
December  31,  1995  and  1994  and  the  related   statements  of   operations,
stockholders'  equity,  and cash  flows for each of the years in the  three-year
period  ended  December 31, 1995 which  report  appears in the December 31, 1995
annual report on Form 10-K of Unigene  Laboratories,  Inc. which is incorporated
herein by reference and to the reference to our firm under the heading "Experts"
in the Prospectus.

         Our report dated March 22, 1996 contains an explanatory  paragraph that
states that the Company has suffered  recurring losses from operations and has a
net working capital deficiency,  which raise substantial doubt about its ability
to continue as a going  concern.  The  financial  statements  do not include any
adjustment that might result from the outcome of this uncertainty.

                                                           KPMG PEAT MARWICK LLP

New York, New York
June 28, 1996


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