UNIGENE LABORATORIES INC
S-3/A, 1997-01-10
MEDICINAL CHEMICALS & BOTANICAL PRODUCTS
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   As filed with the Securities and Exchange Commission on January 10, 1997

                                                       Registration No.333-18079
================================================================================
 
                       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>
Information   contained  herein  is  subject  to  completion  or  amendment.   A
registration  statement  relating  to these  securities  has been filed with the
Securities  and Exchange  Commission.  These  securities may not be sold nor may
offers to buy be accepted prior to the time the registration  statement  becomes
effective.  This  prospectus  shall  not  constitute  an  offer  to  sell or the
solicitation of an offer to buy nor shall there be any sale of these  securities
in any State in which such offer,  solicitation  or sale would be unlawful prior
to registration or qualification under the securities laws of any such State.


   
Prospectus                                                Subject to Completion
                                                          January 10, 1997
    


                           UNIGENE LABORATORIES, INC.

                                  Common Stock
                           (par value $.01 per share)

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

                  This  Prospectus  relates  to the  resale  of up to  6,773,609
shares of common  stock,  par value  $.01 per share  (the  "Common  Stock"),  of
Unigene Laboratories,  Inc., a Delaware corporation (the "Company"),  consisting
of shares of Common Stock, and shares of Common Stock issuable upon the exercise
of warrants, issued to certain persons and entities (the "Selling Shareholders")
identified  herein in  connection  with a  private  placement  completed  by the
Company in October  1996.  See  "Selling  Shareholders."  This  Prospectus  also
relates to an indeterminate number of additional shares of Common Stock that may
be issued to the  Selling  Shareholders  pursuant  to  anti-dilution  provisions
contained in the warrants.  All of the shares offered hereby will be offered and
sold by the 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 January 9, 1997 the last sale price of the Common Stock,  as
reported on the Nasdaq National Market, was 2.06 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.
<PAGE>

           INVESTMENT IN THE SECURITIES OFFERED HEREBY INVOLVES A HIGH
                  DEGREE OF RISK. SEE "RISK FACTORS" ON PAGE 3.

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

          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 , 1997.
    
<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,  as amended by a Form 10-K/A filed
                   April 29, 1996 and a Form 10-K/A filed January 10, 1997.
    
                   2. The  Quarterly  Report of the Company on Form 10-Q for the
                   quarter ended March 31, 1996.

                   3. The  Quarterly  Report of the Company on Form 10-Q for the
                   quarter ended June 30, 1996.

                   4. The  Quarterly  Report of the Company on Form 10-Q for the
                   quarter ended September 30, 1996.
<PAGE>
                   5. 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.


         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 upon the written or oral request of such
person  made  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 September 30, 1996,
had an accumulated  deficit of $41.2  million.  The Company has not received any
significant operating revenues during the last five years.
<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 expects that it 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  believes  that it has  sufficient  financial  resources to
sustain  its  operations  at the current  level  through the middle of the third
quarter of 1997. 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
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."

         There   are   synthetic   salmon   Calcitonin   products   as  well  as
non-Calcitonin  products currently being marketed for osteoporosis  treatment or
in development  that will compete with the Company's  Calcitonin  products.  See
"Risk  Factors  -  Technological  Change  and  Competition."  Expanded  consumer
acceptance of Calcitonin pharmaceutical products 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 has developed or 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.
<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. See "Risk  Factors - Government  Regulation."  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 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,
effective as of March 1996, with the Quingdao 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  nonproprietary  aspects of the  Company's  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 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.
<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 - 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 osteoporosis 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 a  Calcitonin  pill  formulation  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  numerous  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
applications  to issue as patents could have a material  adverse effect upon the
Company's  business.  Although two such patent  applications  currently  are the
subject of an  interference  proceeding,  the Company  does not believe  that an
adverse  ruling  would have a material  adverse  effect on the  business  of the
Company or its prospects. 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
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.
<PAGE>
         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  and  production
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.  The Company  has  received  authorization  to proceed  with  pivotal
clinical  trials in the United States and the United  Kingdom for its injectable
form of Calcitonin.  The Company believes that the abbreviated  clinical program
it is undertaking pursuant to these authorizations will be sufficient to satisfy
approval  requirements in the United States and the European Union.  The Company
believes that it will be eligible for an expedited  approval process which would
be shorter than that typically  associated with a New Drug  Application  ("NDA")
submission  because (i) the active  ingredient is structurally  identical to and
biologically  indistinguishable  from the active  ingredient in products already
approved  by the  FDA,  (ii)  the  formulation  is  essentially  similar  to the
formulations  used in similar,  already approved products and (iii) the clinical
trial program that the FDA authorized  was  relatively  brief and involved small
numbers of subjects,  so the amount of information  that must be reviewed is far
less than would have been compiled for a typical NDA submission.  However, there
can be no assurance that such approval will be received in an  accelerated  time
frame.  See  "The  Company."  In the  case  of the  regulatory  process  for the
Company's  oral form of Calcitonin  products,  the Company  believes that it may
also 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.

         The Company's production facility may, from time to time, be audited by
the FDA to ensure that it is operating in compliance with cGMP guidelines  which
require that the production  operation be conducted in strict  compliance  with,
among other things,  the Company's written protocols for reagent  qualification,
process   execution,   data  recording,   instrument   calibration  and  quality
monitoring.  The FDA is empowered to suspend  production  operations  if, in its
opinion,  significant  and/or  repeated  deviations  from these  protocols  have
occurred.  Such  a  suspension  could  have a  material  adverse  impact  on the
Company's future operations.
<PAGE>
         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. In addition to the issued or to be issued shares of Common
Stock to which  this  Prospectus  relates,  as of  November  30,  1996 there are
approximately  435,000 shares of Common Stock that are issuable upon  conversion
of the Company's outstanding 10% convertible debentures; approximately 1,278,000
shares of Common Stock  issuable upon  conversion  of the Company's  outstanding
9.5%  convertible  debentures;  approximately  3,352,000  shares of Common Stock
issuable  upon  exercise of warrants at exercise  prices  ranging from $1.375 to
$3.50 per share;  approximately  1,701,000  shares of Common Stock issuable upon
exercise of purchase options exercisable at prices ranging from $1.00 to $4.5625
per share; and 10,000 shares of Common Stock issuable for services performed for
the Company. 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 the
Common Stock issuable upon the conversion of such convertible  securities or the
exercise of such options or warrants will have on the market price of the Common
Stock  prevailing  from time to time,  although it is  possible  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  and  warrants  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 or
existing products or procedures,  proposed government regulations,  developments
or disputes relating to agreements,  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."
<PAGE>
         Voting Control.  Warren P. Levy, Ronald S. Levy and Jay Levy,  founders
of the Company,  beneficially own  approximately  12% 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 November 30, 1996 the amount of the Company's net tangible assets
was approximately $12.5 million. However, if the Company in the future is unable
to maintain compliance with the Nasdaq National Market listing requirements, the
Common Stock may be removed from trading on the Nasdaq National  Market.  If the
Company fails to meet the requirements for trading on the Nasdaq National Market
and does not otherwise qualify for inclusion in the Nasdaq Small-Cap 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 Small-Cap Market.

         If the Common Stock is not traded on the Nasdaq  National Market or the
Nasdaq Small-Cap  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.

                                   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 prior  emphasis  on  pharmaceutical
research.  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.
<PAGE>
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   kilogram  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
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 minimal or 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."
<PAGE>
         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. In
May 1996, the Company  requested that both the FDA and the regulatory  authority
for drugs in the  United  Kingdom  authorize  the  Company  to  conduct  pivotal
clinical  trials of its  injectable  form of  Calcitonin,  which  requests  were
granted  shortly  thereafter.  The Company expects the trials to be completed by
approximately  the end of  1996.  The  Company  plans  to  apply  for  marketing
authorization  in the United States and throughout the European Union soon after
completion of the clinical trials. 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 Calcitonin  pharmaceutical products 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 United
States 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 January 1996, the Company  successfully tested its proprietary
Calcitonin pill in Phase I clinical trials in the United Kingdom.  These studies
indicated  that the majority of those who received the pill showed levels of the
hormone in blood  samples  taken  during the trial  which are  greater  than the
minimum levels generally regarded as required for maximal  therapeutic  benefit.
The  Company  believes  that these were the first  studies to  demonstrate  that
significant  blood levels of  Calcitonin  could be observed in humans  following
oral  administration  of the hormone.  In April 1996,  the Company  successfully
conducted a third Phase I clinical  trial in the United  Kingdom which  utilized
lower Calcitonin  dosages than in the prior two clinical trials.  The results of
this trial  indicated  that every  recipient  of the pill  showed  levels of the
hormone in blood samples taken during the trial in excess of the minimum  levels
generally regarded as required for maximal therapeutic benefit.  However,  there
can be no assurance  that these results will be  replicated in further  studies.
The Company has filed a patent  application  for its oral  formulation  with the
U.S. Patent and Trademark  Office and plans to file an 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  developing,  producing or
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 produce and market its products or to carry on its other
projects.  See "Risk  Factors - Absence of  Operating  Revenues  and  Liquidity;
History of Losses; Auditors' Report - Going Concern Considerations."

         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.
<PAGE>
         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 November 30, 1996,  had 60 full-time
employees,  including 25 research and  development  personnel  and 24 production
personnel.  Ten 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 

         Of the 6,773,609  shares of Common Stock  offered  hereby (i) 6,328,206
shares of Common  Stock  have been  issued or are  issuable  by the  Company  to
purchasers (or their  transferees) of detachable units (the "Units") sold by the
Company  in  a  private  placement  completed  in  October  1996  (the  "Private
Placement")  and (ii)  445,403 of the shares of have been issued or are issuable
to BT  Securities  Corporation,  to which the Company  issued  296,935  Units as
compensation for its services as placement agent for the Private Placement. Each
Unit  consists of (i) one share of Common  Stock,  (ii) one quarter of a Class C
warrant,  each whole Class C warrant  exercisable  immediately  to purchase  one
share of Common Stock, and (iii) one quarter of a Class D warrant (together with
the Class C warrants,  the "Warrants"),  each whole Class D warrant  exercisable
immediately to purchase one share of Common Stock.  The Warrants have an initial
exercise  price of $3.00  and  expire  on  October  11,  1999,  except  that the
expiration  date of the Class C warrants may be accelerated by the Company under
certain circumstances.  In addition, the Warrants contain certain adjustment and
anti-dilution  provisions  which,  upon the  occurrence of certain  events,  may
require the Company to adjust the  exercise  price of the  Warrants and to issue
additional shares of Common Stock upon the exercise thereof.

         In  connection  with the  Private  Placement,  the  Company  agreed  to
register for resale under the  Securities  Act the Common Stock  comprising  the
Units  and  the  Common  Stock  issuable  upon  exercise  of the  Warrants  (the
"Registrable  Securities")  and to keep such  registration  statement  effective
until  all of the  Warrants  have  been  exercised  or  expired  and  all of the
Registrable   Securities   have  been  disposed  of  pursuant  to  an  effective
registration  statement or are eligible for resale pursuant to Rule 144(k) under
the Securities Act.
<PAGE>
         This Prospectus  covers any additional  shares of Common Stock that are
issued  pursuant to the exercise of the Warrants  described  herein by reason of
the anti-dilution provisions thereof.
 
         In  addition to shares of Common  Stock  issued as part of the Units or
issuable  upon  exercise of Warrants,  Nelson  Partners and Olympus  Securities,
Ltd.,  own,  or  may  immediately  acquire  upon  conversion  of  the  Company's
outstanding  9.5% Senior Secured  Convertible  Debentures  (the  "Debentures")or
exercise of certain outstanding warrants (the "Citadel Warrants"), 1,148,960 and
375,438  shares of Common  Stock (the  "Debenture  Shares"),  respectively.  The
Debentures  and the  Citadel  Warrants  were  issued  by the  Company  to Nelson
Partners and Olympus Securities, Ltd. in private transactions completed in March
1996 and November 1995, respectively. All of the Debenture Shares are registered
for resale under the Company's Registration Statement No. 33-04557.

         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 November  30, 1996,  with respect to each Selling  Shareholder:
name, number of shares of Common Stock  beneficially owned (including the shares
issuable  upon the exercise of the  Warrants),  number of shares of Common Stock
being  offered  and number of shares of Common  Stock to be held  following  the
offering, assuming the sale of all of the shares of 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 who are transferees of Warrants
or  Registrable  Securities  from the Selling  Shareholders  named below and the
holdings of Common Stock of such additional Selling Shareholders.
<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(1)            Number            Number           Percent
- ----                                          ------       ----------            ------            ------           -------
<S>                                         <C>                <C>            <C>                 <C>                 <C>
Continental Casualty Company                3,000,000          8.5             3,000,000              0                 *
Woodstead Associates II, L.P.                 862,500          2.4               862,500              0                 *
Legg Mason High Yield Fund                    750,000          2.1               750,000              0                 *
Annapurna Partners, L.P.                       75,000           *                 75,000              0                 *
Vincent A. Rossi, Jr.                          75,000           *                 75,000              0                 *
Jeffrey Dobbs                                  15,000           *                 15,000              0                 *
William J. Jacobs                              37,500           *                 37,500              0                 *
Stephen Mazur                                  37,500           *                 37,500              0                 *
Turnberry Capital Partners, L.P.              345,000           *                345,000              0                 *
Catalyst Partners, L.P.                       375,000          1.1               375,000              0                 *
CL Investment Partnership II, L.P.            345,000           *                345,000              0                 *
BT Securities Corporation                     445,403          1.3               445,403              0                 *
Nelson Partners                             1,492,130          4.2               343,170(2)       1,148,960            3.3
Olympus Securities, Ltd.                      442,974          1.3                67,536(3)         375,438            1.1
- --------------------
* Less than one percent.
(1)  Calculated on the basis of 35,218,540 shares of Common Stock outstanding on
     November 30, 1996.
(2)  Does not include  1,148,960  shares  offered for resale by Nelson  Partners
     under the Company's Registration Statement No. 33-04557 on Form S-3.
(3)  Does not include  375,438 shares offered for resale by Olympus  Securities,
     Ltd. under the Company's Registration Statement No. 33-04557 on Form S-3.
</TABLE>
<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 Registrable  Securities 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  or  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 amended or supplemented to reflect such transaction). The Selling
Shareholders also may 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.
<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.  The  Selling  Shareholders  have agreed to
indemnify the Company or any  underwriter,  as the case may be, and any of their
respective affiliates,  directors,  officers,  employees, agents 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 agreed to indemnify the Selling
Shareholders or any underwriter, as the case may be, and any of their respective
affiliates,  directors,  officers,  employees,  agents 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 Registrable Securities.

                                  LEGAL MATTERS

         Certain  legal  matters in  connection  with the shares of Common Stock
offered  hereby are being  passed upon for the  Company by  Covington & Burling,
Washington, D.C.

                                     EXPERTS

         The audited financial statements of the Company 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.
<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:

<TABLE>
<CAPTION>
         <S>                                                           <C>
         Securities and Exchange Commission Registration Fee.........  $  4,265
         Nasdaq Listing Fee..........................................    17,500
         Accounting Fees and Expenses................................     2,500
         Legal Fees and Expenses.....................................    20,000    
         Registrar and Transfer Agent's Fees and Expenses............       500
         Miscellaneous Expenses......................................       500
         Printing Costs..............................................         0
                                                                       --------
                       Total                                           $ 45,265                                          
                                                                       ========                                          
- -------------- 
*    Except for the Securities and Exchange Commission  registration fee and the
     Nasdaq listing fee, all expenses are estimated.

</TABLE>
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.  Section 145 also 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 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) actually and
reasonably  incurred by him in connection  with the defense or settlement of the
<PAGE>
action,  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,  except  that 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 of  competent  jurisdiction  shall
determine that such indemnity is proper. To the extent that a director, officer,
employee or agent is successful on the merits or otherwise in the defense of any
action  referred  to  above,  the  corporation  is  required  under  the DGCL to
indemnify such person against expenses (including  attorneys' fees) actually and
reasonably incurred in connection therewith.

         The Company's  Certificate of  Incorporation  provides that no director
shall be liable to the  Company or its  stockholders  for  monetary  damages for
breach of his  fiduciary  duty as a director,  except for  liability for (i) any
breach of the  director's  duty of loyalty to the  Company or its  stockholders,
(ii) acts or omissions not in good faith or involving intentional  misconduct or
knowing  violation of law, (iii) any transaction from which the director derived
an improper personal benefit,  or (iv) 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   (incorporated  by  reference  to  Exhibit  4.2  to  Company's
         Registration Statement No. 33-04557 on Form S-3).
4.3      Registration  Rights  Agreement,  dated  October  11,  1996,  among the
         Company,  BT Securities  Corporation  and the purchasers  named therein
         (incorporated  by  reference  to Exhibit 1 to the  Company's  Quarterly
         Report on Form 10-Q for the quarter ended September 30, 1996).
4.4      Warrant  Agreement,  dated  October 11,  1996,  among the  Company,  BT
         Securities  Corporation and the purchasers named therein  (incorporated
         by reference  to Exhibit 2 to the  Company's  Quarterly  Report on Form
         10-Q for the quarter ended September 30, 1996).
5.1      Opinion of  Covington & Burling as to the  legality 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).
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  this   Registration
                  Statement:

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

                                   SIGNATURES


         Pursuant  to the  requirements  of the  Securities  Act  of  1933,  the
Registrant 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 be signed on its behalf by the  undersigned  thereunto
duly authorized, in Fairfield, New Jersey, on the 10th day of January, 1997.


                                                      UNIGENE LABORATORIES, INC.


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



         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:
    
<PAGE>
   
<TABLE>
<CAPTION>
   Signature                           Title                       Date
   ---------                           -----                       ----
<S>                             <C>                           <C>
/s/ WARREN P. LEVY              Director, President           January 10, 1997
- ------------------              (principal executive
    Warren P. Levy              (officer)


    RONALD S. LEVY*             Director, Vice President      January 10, 1997 
    --------------- 
    Ronald S. Levy

    JAY LEVY*                   Chairman of the Board         January 10, 1997 
     --------                   of Directors, Treasurer 
    Jay Levy                    (principal financial and 
                                accounting officer)


    ROBERT RUARK*               Director                      January 10, 1997 
    ------------ 
    Robert Ruark

    GEORGE M. WEIMER*           Director                      January 10, 1997 
    ----------------- 
    George M. Weimer

/s/ WARREN P. LEVY
- ------------------
*BY Warren P. Levy
Attorney-in-fact
    
</TABLE>

                              COVINGTON & BURLILNG
                         1201 PENNSYLVANIA AVENUE, N.W.
                                 P.O. BOX 7566
                          WASHINGTON, D.C. 20044-7566
                                 (202) 662-6000
                                     _____  
     
                             TELEFAX (202) 662-6291
                           TELEX: 89-593 (COVLING WSH)
                                 CABLE: COVLING
                                      _____

                           WRITER'S DIRECT DIAL NUMBER


                                        December 17, 1996


Unigene Laboratories, Inc.
110 Little Falls Road
Fairfield, New Jersey 07004

Gentlemen:

         This  opinion  is  being   furnished  to  you  in  connection   with  a
Registration  Statement on Form S-3 (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
6,773,609  shares of the Company's  common stock,  par value $.01 per share (the
"Common  Stock").  Of the  6,773,609  shares  of  Common  Stock  offered  by the
Registration Statement,  (i) 4,515,739 shares (the "Unit Shares") were issued by
the Company in connection with a private placement (the "Private  Placement") of
4,515,739 detachable units (the "Units"),  each Unit consisting of (a) one share
of Common  Stock,  (b) one  quarter  of a Class C warrant,  each  whole  Class C
warrant  exercisable  immediately  to purchase one share of Common Stock and (c)
one  quarter  of a Class D  warrant  (together  with the Class C  warrants,  the
"Warrants"),  each whole Class D warrant exercisable immediately to purchase one
share of Common Stock,  and (ii)  2,257,870  shares (the  "Warrant  Shares") are
issuable by the Company upon exercise of the Warrants.

         For  purpose  of  this  opinion,  we  have  examined  the  Registration
Statement  and the  exhibits  thereto,  copies  of the  Subscription  Agreements
entered into by the Company and each of the  purchasers  of Units in the Private
Placement  (the  "Purchasers"),  the  Placement  Agency  Agreement,  dated as of
October 11, 1996, between the Company and BT Securities  Corporation ("BT"), the
Warrant  Agreement,  dated as of  October  11,  1996,  among  the  Company,  the
Purchasers  and BT, and the  Warrants.  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 necesary 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.
<PAGE>
Unigene Laboratories, Inc.
December 17, 1996
Page 2


         Based on the foregoing, we are of the opinion that: (i) the Unit Shares
have been  validly  issued  and are fully  paid and  nonassessable  and (ii) the
Warrant  Shares have been duly  authorized  for  issuance  upon  exercise of the
Warrants,  and, if and when issued and  delivered  by the Company in  accordance
with the  terms of the  Warrants  and the  Warrant  Agreement,  will be  validly
issued, fully paid and nonassessable.

         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  forming a
part thereof under the heading "Legal Matters."

                                        Very truly yours,

                                        /s/Covington & Burling
                                           -------------------
                                           Covington & Burling



                                  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.
 

                                                       /s/KPMG Peat Marwick LLP
                                                          ---------------------
                                                          KPMG PEAT MARWICK LLP




   
New York, New York
January 10, 1997
    


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