INTERFERON SCIENCES INC
S-3/A, 1998-06-23
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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      As filed with the Securities and Exchange Commission on June 23, 1998
                                                     Registration No. 333-44295


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                 AMENDMENT NO. 1
                                       TO
                                    FORM S-3
                             REGISTRATION STATEMENT
                                      Under
                           THE SECURITIES ACT OF 1933
         
                            INTERFERON SCIENCES, INC.

             (Exact name of registrant as specified in its charter)

                       
                     DELAWARE                       22-2313648
              (State or other jurisdiction          (I.R.S. Employer
            of incorporation or organization)        Identification Number)     
                          
                                783 Jersey Avenue
                         New Brunswick, New Jersey 08901
                                 (732) 249-3250
               (Address, including zip code, and telephone number,
        including area code, of registrant's principal executive offices)

                            LAWRENCE M. GORDON, ESQ.
                             Chief Executive Officer
                            Interferon Sciences, Inc.
                                783 Jersey Avenue
                         New Brunswick, New Jersey 08901
                                 (732) 249-3250
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

                                   Copies to:
                             ROBERT J. HASDAY, ESQ.
                          Duane, Morris & Heckscher LLP
                              380 Lexington Avenue
                            New York, New York 10168
                                 (212) 692-1010

    Approximate date of commencement of proposed sale to the public:  As soon as
practicable after the effective date of this Registration Statement.

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


<PAGE>



    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 offering. [ ]

    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 of 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.  [ ]

<TABLE>

                         CALCULATION OF REGISTRATION FEE
<CAPTION>
                                            Proposed     Proposed
                                            Maximum      Maximum     
      Title of Each        Amount         Offering     Aggregate  Amount of
   Class of Securities     to be           Price      Offering   Registration
    to be Registered     Registered      per Share      Price       Fee
  --------------------  ------------     ----------   ---------  ------------  
<S>                   <C>                <C>         <C>            <C>    
   Common Stock, 
   par value    
   $.01 per share        200,000 shares  $8-1/32 (1)  $1,606,250 (1) $486.74(2)

   Common Stock,
   par value
   $.01 per share     11,800,000 shares  $1-3/16 (3) $14,012,500 (3) $4,246.21
==============================================================================
<FN>

(1)  Estimated  solely for the purpose of calculating the registration fee based
     on the  average of the high and low  prices of the Common  Stock on January
     12, 1998 as reported by NASDAQ, pursuant to Rule 457(c).
(2) Previously paid.
(3)  Estimated  solely for the purpose of calculating the registration fee based
     on the  average of the high and low prices of the Common  Stock on June 18,
     1998 as reported by NASDAQ, pursuant to Rule 457(c).

</FN>
</TABLE>

     The Registrant  hereby amends this  Registration  Statement on such date or
dates as may be necessary to delay its effective date until the Registrant shall
file a further  amendment  which  specifically  states  that  this  Registration
Statement shall  thereafter  become effective in accordance with Section 8(a) of
the  Securities  Act of 1933 or until the  Registration  Statement  shall become
effective on such date as the Commission,  acting pursuant to said Section 8(a),
may determine.


<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 wold be unlawful prior
to registration or qualification under the securities laws of any such State.

                   Subject to Completion, Dated June 23, 1998

                                   PROSPECTUS

                            Interferon Sciences, Inc.

                        12,000,000 Shares of Common Stock

     The shares of Common Stock,  par value $.01 per share (the "Common Stock"),
of Interferon  Sciences,  Inc., a Delaware  corporation (the  "Company"),  being
offered hereby are being sold by the Company. Such shares of Common Stock may be
sold (i) through underwriting syndicates represented by managing underwriters or
by underwriters without a syndicate, (ii) through agents designated from time to
time,  or (iii)  directly  by the  Company.  If any agents of the Company or any
underwriters  are  involved  in the sale of the shares of Common  Stock  offered
hereby, the names of such agents or underwriters and any applicable discounts or
commissions  with respect to such Common Stock will be set forth in a Prospectus
Supplement  to be  delivered  at the time of any such  offering  (a  "Prospectus
Supplement"),  to the extent required. The shares of Common Stock may be sold at
fixed prices that may be changed,  at market  prices  prevailing  at the time of
sale,  at prices  related to such  prevailing  market  prices,  or at negotiated
prices.  To the extent  required,  the number of shares being sold, the purchase
price,  the public  offering price,  the proceeds to the Company,  and the other
terms of the  offering  will also be set forth in a Prospectus  Supplement.  See
"Plan of Distribution."

     The Common Stock is quoted on the NASDAQ  National  Market System under the
symbol  "IFSC." On June 18,  1998,  the last  reported  sale price of the Common
Stock on the NASDAQ National Market System was $1-1/8 per share.

INVESTMENT  IN THE SHARES  OFFERED  HEREBY  INVOLVES A HIGH DEGREE OF RISK.  SEE
                "RISK FACTORS" ON PAGES 3-12 OF THIS PROSPECTUS.

  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 __, 1998


<PAGE>

                              AVAILABLE INFORMATION

     The  Prospectus   omits  certain  of  the  information   contained  in  the
Registration  Statement  relating to the  securities  offered hereby which is on
file with the Securities and Exchange Commission (the "Commission"). 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
periodic reports,  proxy statements,  and other information with the Commission.
Such Registration  Statement,  reports, proxy statements,  and other information
can be inspected,  without charge, and copied at the public reference facilities
maintained by the Commission at Judiciary  Plaza,  450 Fifth Street,  N.W., Room
1024,  Washington,  D.C. 20549,  and at its regional  offices located at 7 World
Trade  Center,  13th Floor,  New York,  New York 10048 and  Northwestern  Atrium
Center,  500 West  Madison  Street,  Chicago,  Illinois  60061.  Copies  of such
material can be obtained at prescribed rates from the Public  Reference  Section
of the  Commission  at  Judiciary  Plaza,  450 Fifth  Street,  N.W.,  Room 1024,
Washington, D.C. 20549.

                       DOCUMENTS INCORPORATED BY REFERENCE

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

                  (a) the  Company's  Annual  Report  on Form  10-K for the year
                      ended December 31, 1997;

                  (b) the  Company's  Quarterly  Report  on Form  10-Q  for the
                      quarter ended March 31, 1998;

                  (c) the description of the Common Stock  contained in the 
                      Company's  Prospectus included in the  Company's 
                      Registration  Statement  on Form S-2,  File No. 33-59479,
                      as filed  pursuant to Rule 424(b)  under the  Securities
                      Act of 1933, as amended (the "Securities Act").

     All documents filed by the Company pursuant to Section 13(a), 13(c), 14, or
15(d) of the Exchange Act on or after the date of this  Prospectus  and prior to
the termination of the offering hereby of the Common Stock shall be deemed to be
incorporated  by reference in this  Prospectus  and to be a part hereof from the
date of filing such documents.

     Any  statement  contained  in a  document  incorporated  or  deemed  to  be
incorporated  by reference  herein shall be deemed to be modified or  superseded
for purposes of this Prospectus to the extent that a statement  contained herein
modifies,  supersedes,  or replaces such statement. Any statement so modified or
superseded  shall  not be  deemed,  except  as so  modified  or  superseded,  to
constitute  a part of  this  Prospectus.  Any  person  receiving  a copy of this
Prospectus may obtain without  charge,  upon written or oral request,  a copy of
any of the documents  incorporated by reference  herein,  except for exhibits to
such documents (unless such exhibits are specifically  incorporated by reference
into the  documents  which this  Prospectus  incorporates).  Requests  should be
directed to: Corporate Secretary,  Interferon Sciences, Inc., 783 Jersey Avenue,
New Brunswick, New Jersey 08901, telephone number (908) 249-3250.

     ALFERON(R) and ALFERON LDO(R) are registered trademarks of the Company.


<PAGE>

                                   THE COMPANY

     Interferon  Sciences,  Inc. (the "Company") is a biopharmaceutical  company
engaged in the  manufacture  and sale of  pharmaceutical  products  based on its
highly purified,  multispecies,  natural source alpha interferon ("Natural Alpha
Interferon").  The Company's ALFERON N Injection(R) (Interferon Alfa-n3) product
has been approved by the United States Food and Drug Administration  ("FDA") for
the  treatment  of  certain  types of  genital  warts and is being  studied  for
potential use in the treatment of HIV, hepatitis C, and other  indications.  The
Company  also is studying  ALFERON N Gel(R) and ALFERON  LDO(R),  the  Company's
topical and oral  formulations  of Natural Alpha  Interferon,  for the potential
treatment of viral and immune system diseases.  The Company's  principal offices
and research and production  facilities  are located at 783 Jersey  Avenue,  New
Brunswick, New Jersey 08901 and its telephone number is (732) 249-3250.

                                  RISK FACTORS

    Prospective  investors  should  consider  carefully the  following  factors,
together with the other  information  contained or  incorporated by reference in
this Prospectus, in evaluating an investment in the Common Stock offered hereby.
This Prospectus  contains or incorporates by reference  certain  forward-looking
statements  reflecting  management's current views with respect to future events
and  financial  performance.  These  forward-looking  statements  are subject to
certain risks and uncertainties,  all of which are difficult to predict and many
of which are beyond the control of the Company,  that could cause actual results
to differ materially from those in the  forward-looking  statements,  including,
but not limited to, the following factors.

     Continuing   Operating  Losses;   Accumulated   Deficit.  The  Company  has
experienced  significant  operating  losses since its  inception in 1980.  As of
March 31, 1998, the Company had an accumulated  deficit of approximately  $111.0
million.  For the three months ended March 31, 1998 and the years ended December
31,  1997,   1996,  and  1995,  the  Company  had  losses  from   operations  of
approximately  $6.5 million,  $22.4 million,  $12.4  million,  and $7.4 million,
respectively.

     Although the Company  received  approval to market  ALFERON N Injection for
the  treatment  of  genital  warts  from  the FDA in  October  1989 and from the
comparable  Mexican  regulatory  authority in December  1994 and entered into an
agreement for Cell Pharm GmbH ("Cell  Pharm") to distribute  ALFERON N Injection
in Germany in April  1996,  it has had only  limited  revenues  from the sale of
ALFERON N Injection to date. In order for the Company to operate profitably, the
Company must sell significantly more ALFERON N Injection. Increased sales in the
United  States will depend  primarily  upon the  attainment  of FDA  approval to
market ALFERON N Injection for additional indications,  of which there can be no
assurance.  See "Phase 3 Clinical  Trials,"  "Products  Under  Development"  and
"Regulatory  Approvals"  below in this  section.  Moreover,  the Company  cannot
market  ALFERON N  Injection  in other  markets  unless  appropriate  regulatory
approvals  are  obtained.  See  "Foreign  Regulatory  Approvals"  below  in this
section.  There can be no  assurance  that  sufficient  quantities  of ALFERON N
Injection will be sold to allow the Company to operate profitably.



<PAGE>



     Phase 3  Clinical  Trials.  In  December  1997,  the  Company  concluded  a
multi-center  Phase 3 clinical  trial of  ALFERON N  Injection  in  HIV-infected
patients. This randomized,  double-blind,  placebo-controlled trial was designed
to evaluate the safety and  efficacy of ALFERON N Injection in the  treatment of
HIV-positive  patients,  some of whom were taking other  FDA-approved  antiviral
agents.  After  completing  its  preliminary  analysis of the data,  the Company
scheduled a pre-filing meeting with the FDA. Shortly after that meeting, the FDA
advised the Company that, although ALFERON N Injection  demonstrated  biological
activity in this Phase 3 clinical  trial,  the  results  were  insufficient  for
filing for  approval  for this  additional  indication  for ALFERON N Injection.
While the results over the course of treatment  demonstrated  benefits that were
statistically  significant  for  the  group  of  patients  receiving  ALFERON  N
Injection and highly statistically significant for the subgroup of such patients
with high CD4 counts, the study's primary efficacy variable  (reduction in viral
load)  was  not  met  at the  time  point  specified  in the  protocol  (end  of
treatment).  The FDA  therefore  indicated  that  an  additional  trial  will be
necessary  to  evaluate  further the  efficacy  of ALFERON N Injection  for this
indication.  The Company is currently evaluating its options with respect to the
HIV program.

    The  Company  is  also  conducting  a  Phase  3  multi-center,   randomized,
controlled  clinical  trial  designed  to  evaluate  the safety and  efficacy of
ALFERON N Injection in naive chronic hepatitis C patients. On April 2, 1998, the
Company  announced  it had  completed  the  interim  analysis of the results for
approximately  half of the  enrolled  patients.  If the  results of the  interim
analysis had demonstrated at a very high level of statistical  significance that
ALFERON N Injection  is  effective,  the Company  intended to seek FDA  approval
while  continuing  to follow the other  enrolled  patients.  However,  while the
efficacy  analysis  indicated that ALFERON N Injection and the control treatment
(an approved  therapy)  appear to be equivalent,  the study protocol  requires a
showing  of  superiority   in  order  to  meet  the  criteria  for   statistical
significance  in the interim  analysis,  and the Company will therefore not seek
FDA  approval  based on the  interim  analysis.  The  Company  expects  that all
patients  will complete the study by mid-year,  followed by a final  analysis in
the third  quarter of 1998. If the results at the end of the trial are favorable
(which to be statistically  significant  must  demonstrate  superiority over the
control treatment for all enrolled patients as a group),  the Company intends to
seek FDA approval in the fourth quarter of 1998.

     There can be no  assurance  that ALFERON N Injection  for the  treatment of
patients with HIV or hepatitis C will be  cost-effective,  safe, or effective or
that the Company  will be able to obtain FDA  approval  for either of such uses.
Furthermore, even if such approvals are obtained, there can be no assurance that
such  product  will  be  commercially  successful  or will  produce  significant
revenues or profits for the Company.  See "Regulatory  Approvals"  below in this
section.



<PAGE>



    Future Capital Needs;  Uncertainty of Additional  Funding.  The Company will
require  substantial  funds to conduct  research and development and preclinical
and clinical  testing and to manufacture and market its products.  For the three
months ended March 31, 1998 and the years ended  December 31,  1997,  1996,  and
1995,  the cash  utilized by the Company's  operations  was  approximately  $5.3
million,  $19.0 million,  $13.3  million,  and $7.1 million,  respectively.  The
increase in cash  utilized by the  Company's  operations  for three months ended
March 31,  1998 and the year ended  December  31,  1997 was in large part due to
expenditures  relating  to the  Company's  Phase 3 HIV and  hepatitis  C  trials
described  above  and the  increase  in the  Company's  inventory  of  ALFERON N
Injection.  The Company had continued to increase its investment in inventory of
ALFERON N Injection to meet anticipated  increases in market demand,  for use in
the Company-sponsored Phase 3 and Phase 2 clinical trials, and so that inventory
would be available in the event  ALFERON N Injection was  subsequently  approved
for the  treatment  of HIV or  hepatitis  C or both by the FDA.  In light of the
results to date of the Company's  Phase 3 studies of ALFERON N Injection in HIV-
and  HCV-infected  patients,  the  Company  has  determined  that it has  enough
inventory  on  hand  to  satisfy  its  clinical  and  commercial  needs  for the
foreseeable future and therefore discontinued  production of ALFERON N Injection
in April 1998.  The Company's  future capital  requirements  will depend on many
factors,  including:  continued  scientific  progress  in its  drug  development
programs; the magnitude of these programs; progress with preclinical testing and
clinical trials; the time and costs involved in obtaining regulatory  approvals;
the  costs  involved  in  filing,  prosecuting,  and  enforcing  patent  claims;
competing  technological  and  market  developments;  changes  in  its  existing
research  relationships;  the ability of the Company to establish  collaborative
arrangements; and effective commercialization activities and arrangements.

   The  Company  anticipates  that  the  cash  that  will be  utilized  by the
Company's operations in 1998 will be significantly less than in 1997 as a result
of the discontinuance in April 1998 of manufacturing,  the conclusion in 1998 of
the  Company's  Phase 3 studies of ALFERON N Injection in HIV- and  HCV-infected
patients,  and certain other cost reductions  instituted in 1998 by the Company,
offset  in  part by the  expenses  associated  with  the  HIV  and  hepatitis  C
co-infection  study that  commenced  in December  1997.  Based on the  Company's
estimates of revenues,  expenses, and levels of production,  management believes
that the cash  currently  available to the Company will be  sufficient to enable
the  Company  to  continue  operations  through  approximately  September  1998.
However,  actual  results,  especially  with  respect  to  revenues,  may differ
materially  from such  estimates,  and no assurance can be given that additional
funding will not be required  sooner than  anticipated  or that such  additional
funding,  whether from financial markets or collaborative or other  arrangements
with corporate partners or from other sources,  will be available when needed or
on terms acceptable to the Company.  Insufficient funds will require the Company
to  delay,  scale  back,  or  eliminate  certain  or  all of  its  research  and
development  programs or to license third parties to  commercialize  products or
technologies  that the  Company  would  otherwise  seek to develop  itself.  The
Independent  Auditors'  report  dated  April  2,  1998  on  the  Company's  1997
consolidated  financial statements notes that the Company has suffered recurring
losses from  operations  and has an accumulated  deficit that raise  substantial
doubt about its ability to continue as a going concern.

     Supply  Agreement.  The Company  currently  obtains human white blood cells
used in the manufacture of ALFERON N Injection from several  sources,  including
the American Red Cross pursuant to a supply  agreement  dated April 1, 1997. The
Company will not need more human white blood cells until such time as production
of ALFERON N Injection  is resumed.  Under the terms of the  agreement  with the
American Red Cross,  the Company is  obligated  to purchase a minimum  amount of
human white  blood cells each month  through  March 1999.  The minimum  purchase
commitment during the period from April 1998 through March 1999 is approximately
$260,000 per month.  In addition,  the Company owes the American Red Cross $1.45
million with respect to buffycoats  purchased  during the period from April 1997
through  March  1998.  The Company  hopes to  renegotiate  the minimum  purchase
commitment  and negotiate  payment terms with respect to the amount owed, but if
it is unable to do so such obligations may have a material adverse effect on the
financial condition of the Company.


<PAGE>



     No Guaranteed  Source of Required  Materials.  The Company uses a number of
essential  materials in the  production of Natural Alpha  Interferon,  including
human white blood  cells,  and has limited  sources  from which to procure  such
materials. The Company does not have long-term agreements for the supply of most
of such materials.  There can be no assurance that long-term  supply  agreements
covering  essential  materials  can be entered into on  commercially  reasonable
terms, if at all. Although the Company currently obtains human white blood cells
from several  sources,  including  the  American Red Cross  pursuant to a supply
agreement  dated April 1, 1997,  there can be no assurance that the Company will
be able to obtain all the human white blood  cells that it needs.  In  addition,
there can be no assurance  that the Company will be able to renew its  agreement
with the  American  Red  Cross  when it  terminates.  If it is  unable to obtain
required raw materials, the Company may be required to scale back its operations
or stop  manufacturing  Natural Alpha Interferon.  The costs and availability of
products and materials required by the Company for the commercial  production of
ALFERON N  Injection  and other  products  which the  Company  may  commercially
produce are subject to fluctuation  depending on a variety of factors beyond the
Company's control, including competitive factors, changes in technology, and FDA
and other governmental regulation and there can be no assurance that the Company
will be able to obtain such  products and  materials on terms  acceptable to the
Company or at all.

    Limited  Marketing  Program.  In May  1997,  the  Company  entered  into  an
agreement appointing Alternate Site Distributors,  Inc. ("ASD"), a subsidiary of
Bergen  Brunswig  Corporation,  the sole United States  distributor of ALFERON N
Injection.  Pursuant  to such  agreement,  ASD will also  provide  clinical  and
product information,  reimbursement  information and services, and management of
patient  assistant  services.  In addition,  the Company currently has marketing
arrangements  for the distribution of ALFERON N Injection in Mexico and Germany.
Unless the  Company  successfully  develops  its own sales  force or enters into
additional  marketing  arrangements  with other  companies,  the Company will be
dependent  on the  ability  of  its  current  distributors  to  sell  sufficient
quantities  of ALFERON N Injection  to allow the Company to operate  profitably.
There can be no assurance that the Company will be able to develop its own sales
force or enter into additional  marketing  agreements on acceptable terms, if at
all, or that the Company will be able to successfully  market and sell ALFERON N
Injection or any other product.

     Products  Under  Development.  The  Company's  products  under  development
include (i) ALFERON N Injection for the potential treatment of HIV, hepatitis C,
multiple  sclerosis,  and  hepatitis  B, (ii)  ALFERON  N Gel for the  potential
treatment of cervical  dysplasia,  intravaginal warts,  mucocutaneous  herpes in
immuno-compromised patients, and recurrent genital herpes, and (iii) ALFERON LDO
for the potential  treatment of certain  symptoms of patients  infected with the
HIV  virus.  However,  there can be no  assurance  that these  products  will be
cost-effective,  safe, or effective treatments for these diseases,  and there is
no assurance of receiving  regulatory  approvals to market these  products.  The
Company cannot market such products  until such approvals are obtained.  Even if
such  approvals  are  obtained,  there  can be no  assurance  that  any of these
products will be successful or will produce significant  revenues or profits for
the  Company.  The  ability of the Company to become  profitable  depends on the
successful commercial development of these products.

     Potential Side Effects.  The Company is engaged in the manufacture and sale
of a single FDA  approved  product,  ALFERON N Injection  for the  treatment  of
refractory or recurring  external  genital warts in adults.  In clinical  trials
conducted for the treatment of genital warts with ALFERON N Injection,  patients
have not experienced  serious side effects;  however,  there can be no assurance
that unexpected or unacceptable side effects will not be found in the future for
this use or other  potential  uses of this product or for any other  product the
Company might develop which could threaten or limit such  product's  usefulness.
See "Risk of Product Liability" below in this section.

     Substantial  Competition.  In the United  States and  Mexico,  the  Company
currently  competes  with  Schering-Plough   Corp.'s   ("Schering")   injectable
recombinant interferon product in the treatment of genital warts. In March 1997,
Minnesota   Mining  &   Manufacturing   Co.   received   FDA  approval  for  its
immune-response modifier,  Aldara(R), a self-administered topical cream, for the
treatment of genital  warts.  ALFERON N Injection  also competes with  surgical,
chemical, and other methods of treating genital warts. The Company cannot assess
the impact products developed by the Company's  competitors or advances in other
methods of the treatment of genital warts will have on the commercial  viability
of its product.



<PAGE>


     If and  when  the  Company  obtains  additional  approvals  of  uses of its
products (such as the approval obtained by Cell Pharm in Germany), it expects to
compete primarily on the basis of product  performance.  The Company's potential
competitors  have  developed or may develop  products  (containing  either alpha
interferon or other  therapeutic  compounds) or other  treatment  modalities for
those uses.  Many of the Company's  potential  competitors are among the largest
pharmaceutical  companies  in the  world,  are well  known to the public and the
medical community,  and have substantially greater financial resources,  product
development,  and manufacturing  and marketing  capabilities than the Company or
its marketing partners.

    Schering's  recombinant interferon product has achieved market dominance for
the  treatment  of  hepatitis C and  hepatitis B in the United  States and other
markets, and Roche Pharmaceuticals's recombinant interferon product was recently
approved for the  treatment  of  hepatitis C in the United  States and for other
medical uses in foreign  countries.  A number of synthetic  antiviral  compounds
have been  approved in the United States and certain  foreign  countries for the
treatment,  primarily in combination therapy, of HIV and AIDS, including reverse
transcriptase   inhibitors   (nucleoside   analogues)   such  as  Epivir(R)  and
Retrovir(R)  (manufactured  by Glaxo Wellcome Inc.),  Hivid(R)  (manufactured by
Roche   Laboratories,   Inc.),  and  Zerit(R)  and  Videx(R)   (manufactured  by
Bristol-Myers  Squibb  Company)  and  protease  inhibitors  such as  Crixivan(R)
(manufactured  by  Merck  &  Co.,  Inc.),  Invirase(R)  (manufactured  by  Roche
Laboratories, Inc.), and Norvir(R) (manufactured by Abbott Laboratories).  Also,
Viramune(R),  a non-nucleoside reverse transcriptase  inhibitor (manufactured by
Boehringer Ingelheim  Corporation),  was recently approved by the FDA for use in
combination with nucleoside  analogues for the treatment of HIV-infected adults.
In the  United  States,  two  recombinant  forms of beta  interferon  have  been
approved for the treatment of relapsing-remitting  multiple sclerosis. There can
be no assurance  that, if the Company is able to obtain  regulatory  approval of
ALFERON N Injection for the treatment of any of those diseases,  it will be able
to achieve any significant penetration into those markets. In addition,  because
certain of the competitive products are not dependent on a source of human blood
cells, such products may be able to be produced in greater volume and at a lower
cost than ALFERON N Injection and the Company's  other Natural Alpha  Interferon
formulations.  Currently,  the Company's  wholesale price on a per unit basis of
ALFERON  N  Injection  is  substantially  higher  than  that of the  competitive
recombinant alpha interferon products.

     Other  companies  may  succeed  in  developing  products  earlier  than the
Company,  obtaining  approvals  for such products from the FDA more rapidly than
the Company,  or developing products that are more effective than those proposed
to be  developed  by the  Company.  While the  Company  will seek to expand  its
technological  capabilities  in order to  remain  competitive,  there  can be no
assurance that research and development by others or other medical advances will
not render the Company's  technology or products obsolete or  non-competitive or
result in treatments or cures superior to any therapy  developed by the Company,
or that any therapy  developed  by the Company will be preferred to any existing
or newly developed technologies.


<PAGE>


     Potential Patent  Infringement  Claims. On March 5, 1985, the United States
Patent  and  Trademark  Office  issued  a  patent  to  Hoffmann-La  Roche,  Inc.
("Hoffmann") claiming purified human alpha (leukocyte) interferon (regardless of
how it is produced). F. Hoffmann-LaRoche Ltd. ("Roche"), the parent of Hoffmann,
also has been issued patents  covering human alpha  interferon in many countries
throughout the world. As of March 31, 1995, the Company obtained a non-exclusive
perpetual license from Hoffmann and Roche which grants the Company the worldwide
rights to make, use, and sell,  without a potential  patent  infringement  claim
from Hoffmann or Roche, any formulation of Natural Alpha Interferon. The license
permits the Company to grant  marketing  rights  with  respect to Natural  Alpha
Interferon  products to third  parties,  except that the  Company  cannot  grant
marketing  rights with  respect to  injectable  products in any country in which
Hoffmann  or Roche has patent  rights  covered by the license to any third party
not  listed on a schedule  of  approximately  50  potential  marketing  partners
without the consent of Hoffmann and Roche,  which consent cannot be unreasonably
withheld. There can be no assurance that the Company will not want to grant such
marketing rights to a third party not listed on such schedule,  or that Hoffmann
and Roche will not withhold the required consent.  In addition,  if such license
were terminated,  the Company may be subject to a patent infringement lawsuit by
Hoffmann and Roche if it continued to market Natural Alpha Interferon  products.
If such a suit were brought,  the Company would have to either  counterclaim  to
attempt to  invalidate  the Hoffmann and Roche  patents or prove that it did not
infringe such patents.

     In  addition,  there may have been other patent  applications  filed in the
United  States  and in foreign  countries,  some of which may have been filed by
potential  competitors of the Company,  with respect to the technologies  and/or
products  which may be  required  by the  Company to  produce  its  current  and
proposed  products.  If any of such  patents  issue in the  United  States or in
foreign  countries in a form which covers the  Company's  products or processes,
the  Company  would be  required  to  obtain  licenses  under  such  patents  in
connection  with  the  domestic  and  international  commercialization  of  such
products. There can be no assurance that the Company could obtain licenses under
any of such patents if so issued,  particularly if they were issued to companies
directly in  competition  with the Company,  or that,  even if the Company could
obtain licenses, it could do so on commercially reasonable terms.

     If the sale or use of any of the  Company's  products  were to  become  the
basis of a patent infringement lawsuit,  assuming the Company could not obtain a
license on satisfactory  terms, the Company may be required to incur substantial
litigation  expenses,   and  such  litigation  could  also  consume  substantial
management  time,  which could have a material adverse effect upon the financial
condition of the Company even if it were to be successful in the litigation.  If
the Company proved unsuccessful in such litigation,  it may be required to pay a
royalty for the use of the claimed  patents or cease  producing the products and
redevelop the products in such a way as to avoid  infringing  any claimed patent
rights.  There can be no assurance in such case that the Company  could obtain a
license under such patents on commercially  reasonable  terms or at all, or that
it could  successfully  redevelop  the products to fall outside the scope of the
claim.

     It is the  Company's  policy to seek licenses if it believes that the terms
of such  licenses,  when  weighed  against  the  expense  and  uncertainties  of
potential litigation, are cost effective.


<PAGE>


    Possible  Inability to Protect  Technology.  To a  significant  extent,  the
ability of the Company to protect its rights in any  products or  technology  it
may  develop  depends  upon its  ability  to obtain  suitable  patent or similar
protection.  The  ability of the  Company  to obtain  patents,  and the  nature,
extent, and enforceability of the intellectual property rights that are obtained
as a result of the Company's research, involve complex legal and factual issues.
New technology and products  developed by the Company may not qualify for patent
protection or, if they do qualify,  may be subject to challenge or to protracted
judicial  proceedings.  In  addition,  the  Company  may  determine  not to seek
additional patent or other protection for its technology or products.  It is not
certain that other  patents will be issued or, if issued,  that they will afford
the  Company  protection  from  competitive  products.  Although  the  Company's
practice is to require its technical and scientific employees and consultants to
execute confidentiality  agreements covering proprietary information,  there can
be no assurance that others will not independently  make similar  discoveries or
otherwise obtain access to proprietary  information of the Company. In addition,
the Company has a non-exclusive  license agreement with Hoffmann and Roche which
enables  the  Company  to sell its  products.  There  can be no  assurance  that
Hoffmann or Roche has not granted or will not grant a similar license to another
company with considerably greater financial,  technical, and marketing resources
than the Company or that Hoffmann or Roche will not enter the market itself with
a competitive product.

     While the Company has been issued a United  States patent for Natural Alpha
Interferon  produced from human  peripheral  blood leukocytes and its production
process and has several patent applications  pending, it is possible that others
have or may develop  equivalent or superior products or technologies which would
not fall within the scope of the Company's  patent claims or which might involve
inventions  similar in scope to those of the Company for which patent or similar
rights are  obtained by others  prior to the time that the Company is able to do
so.

     Regulatory  Approvals.  The  production  and  marketing  of  the  Company's
products in the United States,  as well as its ongoing  research and development
activities,   are  subject  to  regulation  by   governmental   agencies,   most
significantly the FDA. Such regulation  includes  requirements for obtaining FDA
approval prior to marketing each of its products in the United States.  In order
to obtain such FDA approval,  the Company must demonstrate,  among other things,
the safety and  efficacy  of each  product  through  pre-clinical  and  clinical
testing.  Obtaining such approvals is a time-consuming  process and requires the
expenditure  of substantial  resources.  Each facility in which the products are
produced and packaged,  whether  operated by the Company or a third party,  must
meet the FDA's standards for current good manufacturing  practices and must also
be  approved  prior to  marketing  any  product  produced  or  packaged  in such
facility.  Any  significant  change  in  the  production  process  which  may be
commercially required, including changes in sources of certain raw materials, or
any change in the location of the  production  facilities  will also require FDA
approval.  To the extent a portion of the manufacturing process for a product is
handled by an entity other than the Company,  the Company must similarly receive
FDA  approval  for the  participation  by such third party in the  manufacturing
process.  For example,  the Company has entered  into an  agreement  with Abbott
Laboratories,  Inc.  ("Abbott") pursuant to which Abbott formulates and packages
ALFERON N Injection.  The Company presently has a biologic establishment license
for the facilities in which it produces ALFERON N Injection,  which includes the
facilities in which Abbott  formulates and packages ALFERON N Injection.  If the
Company's or Abbott's present manufacturing facilities were damaged or destroyed
or the  Company's  arrangements  with  Abbott were  terminated,  there can be no
assurance  that FDA  approval  could be obtained  for  another  facility or that
another  facility  could  be  built  and  approved  on  a  timely  basis  or  on
commercially  reasonable terms.  Delays in obtaining,  or the failure to obtain,
any necessary  regulatory  approvals could have a material adverse effect on the
Company's  ability to develop,  produce,  and sell its  products.  In  addition,
failure  of the  Company to comply in any  respect  with FDA  requirements  with
respect to the production and marketing of biological  drug products can subject
the  Company to  potential  civil and  criminal  penalties  and its  products to
seizure and other civil enforcement  action.  Because of the uncertain nature of
many of these  requirements,  there can be no assurance that regulatory problems
of this type will not occur.


<PAGE>


     Foreign Regulatory Approvals.  To market its products outside of the United
States,  the  Company is subject to  numerous  and  varying  foreign  regulatory
requirements,  implemented by foreign health  authorities,  governing the design
and  conduct of human  clinical  trials and  marketing  approval.  The  approval
procedure  varies among countries and can involve  additional  testing,  and the
time  required to obtain  approval  may differ from that  required to obtain FDA
approval.  At present,  foreign  marketing  authorizations  are applied for at a
national level,  although certain  registration  procedures are available within
the European  Union (the "EU") to companies  wishing to market a product in more
than one EU member country. If a regulatory authority is satisfied that adequate
evidence  of  safety,  quality,  and  efficacy  has  been  presented,  marketing
authorization  is usually  granted.  The  foreign  regulatory  approval  process
includes  all of the risks  associated  with  obtaining  FDA  approval set forth
above.  Approval by the FDA does not ensure approval by other  countries.  There
can be no assurance that the Company's products will receive such approvals.  In
addition, under certain circumstances, the Company may be required to obtain FDA
authorization to export products for sale in foreign countries. For instance, in
most cases,  the Company may not export  products that have not been approved by
the FDA unless it first  obtains an export permit from the FDA.  However,  these
FDA export  restrictions  generally do not apply if the  Company's  products are
exported in conformance  with their United States  approvals or are manufactured
outside the United  States.  At the present time,  the Company does not have any
foreign manufacturing facilities.

     Uncertainty  of  Pharmaceutical  Pricing  and  Related  Matters;  Need  for
Reimbursement.  The future revenues and  profitability  of, and  availability of
capital for,  biotechnology  companies may be affected by the continuing efforts
of governmental and third-party  payors to contain or reduce the costs of health
care through various means. For example, in certain foreign markets, the pricing
and  profitability  of  prescription  pharmaceuticals  is subject to  government
control.  In Japan, which is currently the world's largest market for interferon
products,  the government imposed price cuts ranging from 13.5% to 22.7% in 1994
on certain interferon  products then being marketed in Japan. The Company cannot
predict  whether  similar  price cuts will be  imposed  on any of the  Company's
products  in Japan or in any other  country  at such time as such  products  are
being  marketed in such  country or the size or duration of any cuts that may be
imposed.  However,  there can be no assurance that any such cuts will not have a
material  adverse effect on the Company's  future  results of operations.  There
have been,  and the Company  expects there to continue to be, a number of United
States federal and state proposals to implement similar government  control.  It
is  uncertain  what form any health  care  reform  legislation  may take or what
actions  the  federal,  state,  and  private  payors may take in response to the
suggested reforms. The Company cannot predict when any suggested reforms will be
implemented,  if ever, or the effect of any implemented  reform on the Company's
business.  There can be no assurance,  however, that any implemented reform will
not  have  a  material  adverse  effect  on  the  Company's  future  results  of
operations.  The Company's long-term ability to market its products successfully
may  depend in part on the  extent to which  reimbursement  for the cost of such
products and related  treatment will be available from public and private health
insurers  and  other   organizations.   Third-party   payors  are   increasingly
challenging  the prices of medical  products  and  services.  The  reimbursement
status of newly-approved health care products is highly uncertain, and there can
be no assurance  that  third-party  coverage will be available or that available
third-party coverage will enable the Company to maintain price levels sufficient
to realize an appropriate return on its investment in product development. While
recombinant  alpha interferon  products can be produced at a lower cost per unit
than the Company's formulations of Natural Alpha Interferon products, until dose
regimens  and  treatment  durations  are  determined,  the  Company is unable to
determine  whether the cost of treatment  with the  Company's  products  will be
greater, equal to, or less than the cost of competing treatments.

     Royalty  Obligations.  The Company is a party to certain license agreements
pursuant to which it is obligated  to pay  royalties  based upon the  commercial
exploitation  of its products.  Royalty  payments under such license  agreements
with  respect to  ALFERON N  Injection,  ALFERON N Gel,  and  ALFERON  LDO could
aggregate up to 9.5%, 13.5%, and 19.5%, respectively, of the Company's net sales
of such  products.  Such  royalty  obligations,  together  with  any  additional
royalties which may be payable by the Company, may limit the Company's marketing
strategies and prevent it from obtaining  adequate profit margins and could have
a  material  adverse  effect on the  commercial  exploitation  of the  Company's
products.


<PAGE>



     In connection  with the  acquisition of certain  intellectual  property and
technology  rights from GP  Strategies  Corporation  (formerly  National  Patent
Development  Corporation)  ("GP"),  the Company agreed to pay GP a royalty of $1
million.  Such amount is payable if and when the Company generates income before
income  taxes,  limited to 25% of such income before income taxes per year until
such amount is paid in full.

     Risk of Product  Liability.  The Company's  products have undergone or will
undergo  extensive  clinical  testing  prior to the  granting of any  regulatory
approval for the purpose,  among other things, of determining the safety of such
products. The Company may sell products which cause unexpected adverse reactions
or  result  in an  allergic  or other  reaction  or which  are  alleged  to have
unacceptable  adverse side effects.  Product  liability  risk is inherent in the
testing,  manufacture,  marketing, and sale of the Company's products, and there
can be no assurance that the Company will be able to avoid  significant  product
liability  exposure.  Such  liability  might result from claims made directly by
consumers or by pharmaceutical  companies or others selling such products. It is
impossible  to predict  the scope of injury or  liability  from such  unexpected
reactions,  or the measure of damages  which might be imposed as a result of any
claims or the cost of defending such claims. The Company has a product liability
insurance  policy in the amount of  $10,000,000.  Although the Company  believes
this amount is  sufficient,  there is no assurance that the Company will be able
to maintain  such  coverage,  and even if it does maintain it, in the event that
the  Company  becomes  subject to  liability  claims in excess of any  insurance
coverage it may have in effect,  the Company may not have  sufficient  assets or
liquidity to satisfy such claims which could result in the  Company's  inability
to  continue  its  operations.  Furthermore,  any  published  reports  or rumors
suggesting  a link  between a Company  product  and injury to a person  could be
expected to materially impair the Company's ability to market such product.

    Retention of Key Personnel.  Because of the specialized scientific nature of
the Company's  business,  it is necessary to attract and retain personnel with a
wide  variety of  scientific  capabilities.  Competition  for such  personnel is
intense. There can be no assurance that the Company will continue to attract and
retain personnel of high scientific caliber. None of the Company's key employees
other than its chief executive officer have long-term employment agreements. The
Company does not maintain key man life  insurance  for any of its key  employees
and does not intend to obtain such insurance.  The Company's loss of services of
certain of its  employees  or other  members of its staff  could have a material
adverse effect on the Company's operations.

     Conflicts  of  Interest.   As  of  June  1,  1998,  GP  beneficially  owned
approximately 12% of the outstanding  shares of Common Stock.  Certain conflicts
of  interest  may arise as a result of GP's stock  ownership  in the Company and
certain related  transactions  between the Company and GP. In addition,  certain
directors of GP also serve as directors of the Company.

     Preferred  Stock. The Company's  charter provides for 5,000,000  authorized
but unissued shares of Preferred Stock, the rights, preferences, qualifications,
limitations,  and  restrictions  of which may be fixed by the Board of Directors
without any further vote or action by the stockholders. The ability to issue the
Preferred  Stock could have the effect of delaying,  deferring,  or preventing a
change of control of the Company.


<PAGE>



    Options  and  Warrants.  As of June 1, 1998,  the  Company  had  outstanding
options and warrants to purchase  2,000,122 shares of Common Stock. For the life
of the outstanding options and warrants, the holders are given, at nominal cost,
the opportunity to profit if the price for the Common Stock in the public market
exceeds the exercise price of the options or warrants, without assuming the risk
of  ownership,  with a  resulting  dilution in the  interest  of other  security
holders.  If the public market price of the Common Stock does not rise above the
exercise price of the options or warrants during the exercise period,  then such
securities  will  expire  worthless.  As long  as the  outstanding  options  and
warrants  remain  unexercised,  the terms under which the Company  could  obtain
additional  capital may be adversely  affected.  Moreover,  the holders of these
securities may be expected to exercise them at a time when the Company would, in
all  likelihood,  be able to obtain any needed  capital by a new offering of its
securities on terms more favorable than those provided by these securities.

    Volatility  of Share Price;  Lack of Liquidity.  There has been  significant
volatility  in the market  prices for publicly  traded  shares of  biotechnology
companies,  including the Company.  There can be no assurance  that the price of
the Common  Stock will  remain at or exceed  current  levels.  Factors,  such as
announcements  of  technological  or product  developments by the Company or its
competitors,   governmental   regulation,   or  patent  or  proprietary   rights
developments,  may have a  significant  impact on the market price of the Common
Stock.

     While 17 firms made a market in the Common Stock as of June 1, 1998,  all
or some of such firms may  discontinue  such activities at any time or from time
to time, which may adversely affect the price and liquidity of the Common Stock.

     Dividends  on  Common  Stock  Unlikely.   The  Company  does  not,  in  the
foreseeable future, anticipate paying any dividends on the Common Stock.



<PAGE>


                              PLAN OF DISTRIBUTION

     The Company may offer the shares  Common Stock being sold by the Company in
any of three ways: (i) through underwriting  syndicates  represented by managing
underwriters  or by  underwriters  without  a  syndicate,  (ii)  through  agents
designated  from time to time, or (iii) directly by the Company.  Such shares of
Common Stock may be sold at fixed prices that may be changed,  at market  prices
prevailing  at the time of sale,  at prices  related to such  prevailing  market
prices,  or at  negotiated  prices.  To  the  extent  required,  any  Prospectus
Supplement  with respect to such shares of Common Stock will set forth the terms
of the  offering  and the  proceeds to the Company  from the sale  thereof,  any
underwriting   discounts  and  other  items  of  price,  and  any  discounts  or
concessions  allowed or reallowed or paid to dealers.  Any public offering price
and any discounts or concessions  allowed or reallowed or paid to dealers may be
changed from time to time.

         If underwriters are utilized,  the Common Stock being sold to them will
be  acquired  by the  underwriters  for their own account and may be resold from
time to time in one or more transactions,  including negotiated transactions, at
a fixed public offering  price,  or at varying prices  determined at the time of
sale. The Common Stock may be offered to the public either through  underwriting
syndicates  represented by one or more managing  underwriters or directly by one
or more firms acting as underwriters. To the extent required, the underwriter or
underwriters  with respect to the Common Stock being offered by the Company will
be named in the  Prospectus  Supplement  relating  to such  offering  and, if an
underwriting syndicate is used, the managing underwriter or underwriters will be
set forth on the cover  page of such  Prospectus  Supplement.  Any  underwriting
agreement will provide that the obligations of the  underwriters  are subject to
certain conditions precedent.

     The Common  Stock may be sold  directly  by the  Company or through  agents
designated by the Company from time to time. To the extent  required,  any agent
involved in the offer or sale of the Common  Stock being  offered by the Company
will be named in the Prospectus  Supplement.  Unless otherwise  indicated in the
Prospectus Supplement, any such agent will be acting on a best efforts basis for
the period of its appointment.

     Agents and underwriters may be entitled under agreements  entered into with
the Company to indemnification by the Company against certain civil liabilities,
including  liabilities under the Securities Act, or to contribution with respect
to payments which the agents or underwriters  may be required to make in respect
of such liabilities.

     Agents and  underwriters may engage in other  transactions  with or perform
other services for the Company.  To the extent required,  any such relationships
will be set forth in a Prospectus Supplement.

     The  Company  will pay all of the  expenses  of the  offering of the shares
Common Stock being sold by the Company.

                                  LEGAL MATTERS

     The  legality of the  securities  offered  hereby will be passed on for the
Company by Andrea D.  Kantor,  Associate  General  Counsel of the  Company.  Ms.
Kantor owns 5,000  shares of Common  Stock and has  options to  purchase  24,376
shares of Common  Stock,  of which  options to purchase  10,188 shares of Common
Stock are currently exercisable.


<PAGE>


                                     EXPERTS

     The  audited  consolidated  financial  statements  of the  Company  and its
subsidiary at December 31, 1997 and 1996, and for each of the years in the three
year period ended December 31, 1997,  incorporated by reference herein 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  auditing  and
accounting.  The report of KPMG Peat  Marwick LLP covering the December 31, 1997
consolidated  financial statements contains an explanatory paragraph that states
that the Company's  recurring  losses from  operations and  accumulated  deficit
raise  substantial  doubt  about the  entity's  ability to  continue  as a going
concern.  The consolidated  financial  statements do not include any adjustments
that might result from the outcome of that uncertainty.

                             ADDITIONAL INFORMATION

    The Company has filed with the Commission a  Registration  Statement on Form
S-3 under the  Securities  Act with  respect to the shares of Common Stock being
offered  by  this  Prospectus.  This  Prospectus  does  not  contain  all of the
information set forth in the  Registration  Statement and the exhibits  thereto,
certain  portions  of which  have been  omitted  as  permitted  by the rules and
regulations  of the  Commission.  For further  information  with  respect to the
Company  and the  Offering,  reference  is made to the  Registration  Statement,
including the exhibits  thereto,  which may be inspected  without  charge at the
Commission's principal office at 450 Fifth Street, N.W., Washington, D.C. 20549.
Copies of the Registration  Statement may be obtained from the Commission at its
principal office upon payment of prescribed fees.  Statements  contained in this
Prospectus  as to the  contents  of any  contract  or  other  document  are  not
necessarily complete, and in each instance where such contract or other document
is an exhibit to the  Registration  Statement,  reference is made to the copy of
such  contract  or  other  document  filed  as an  exhibit  to the  Registration
Statement, each statement being qualified in all respects by such reference.


<PAGE>



     No dealer, salesperson, or any other person has been authorized to give any
information or to make any  representations  other than those  contained in this
Prospectus,  and, if given or made, such information or representations must not
be relied upon as having been authorized by the Company or the Underwriter. This
Prospectus does not constitute an offer to sell or the solicitation of any offer
to buy any of the  securities  offered hereby to anyone in any  jurisdiction  in
which such offer or  solicitation  is  unlawful.  Neither  the  delivery of this
Prospectus nor any sale made hereunder  shall,  under any  circumstances,  imply
that  there  has  been no  change  in the  affairs  of the  Company  or that the
information herein is correct as of any time subsequent to the dates as of which
such information is given.


                                TABLE OF CONTENTS

                                                                      Page
                                                                      ----

The Company                                                             3

Risk Factors                                                            3

Plan of Distribution                                                   13

Legal Matters                                                          13

Experts                                                                14

Additional Information                                                 14


<PAGE>

                            Interferon Sciences, Inc.

                                12,000,000 Shares

                                       of

                                  Common Stock



                                   PROSPECTUS






                                 June ___, 1998


<PAGE>


                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.  Other Expenses of Issuance and Distribution.


    The  following  table sets forth an itemized  statement  of all  expenses in
connection with the issuance and distribution of the securities being registered
hereby. All are estimated except the SEC fee.

                       SEC registration fee                     $4,733
                              
                       Accounting fees and expenses              3,500
                              
                       Legal fees and expenses                  10,000
                              
                       Miscellaneous                             1,767
                            
                                    Total                    ---------
                                                               $20,000
                                                             =========
                                                                     
Item 15.  Indemnification of Directors and Officers

    Article 9 of the Company's  Restated  Certificate of Incorporation  provides
that the Company shall, to the full extent then permitted by law,  indemnify all
persons whom it may indemnify pursuant thereto.  In addition,  Article 10 of the
Company's Restated Certificate of Incorporation eliminates personal liability of
its directors to the full extent  permitted by Section  102(b)(7) of the General
Corporation Law of the State of Delaware.

    Section 145 of the General Corporation Law of the State of Delaware permits
a  corporation  to  indemnify  its  directors  and  officers   against  expenses
(including  attorney's fees),  judgments,  fines and amounts paid in settlements
actually and reasonably  incurred by them in connection with any action, suit or
proceeding brought by third parties, if such directors or officers acted in good
faith and in a manner  they  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 reason to believe their conduct was unlawful. In a derivative
action, i.e., one by or in the right of the corporation,  indemnification may be
made only for  expenses  actually  and  reasonably  incurred  by  directors  and
officers in connection  with the defense or settlement of an action or suit, and
only with  respect  to a matter as to which  they shall have acted in good faith
and in a manner  they  reasonably  believed  to be in or not opposed to the best
interest of the  corporation,  except that no  indemnification  shall be made if
such person shall have been adjudged liable to the corporation,  unless and only
to the  extent  that the court in which the  action  or suit was  brought  shall
determine  upon  application  that  the  defendant  officers  or  directors  are
reasonably  entitled to indemnity for such expenses despite such adjudication of
liability.

     Section  102(b)(7) of the General  Corporation Law of the State of Delaware
provides that a corporation  may eliminate or limit the personal  liability of a
director to the corporation or its  stockholders for monetary damages for breach
of  fiduciary  duty as a  director,  provided  that  such  provision  shall  not
eliminate  or limit  the  liability  of a  director  (i) for any  breach  of the
director's duty of loyalty to the corporation or its stockholders, (ii) for acts
or omissions  not in good faith or which  involve  intentional  misconduct  or a
knowing violation of law, (iii) under Section 174 of the General Corporation Law
of the State of Delaware,  or (iv) for any  transaction  from which the director
derived an improper personal benefit. No such provision shall eliminate or limit
the liability of a director for any act or omission  occurring prior to the date
when such provision becomes effective.

    The Company  currently has a $5,000,000  directors' and officers'  liability
insurance policy.

<PAGE>

Item 16.  Exhibits.

          5.1 --  Opinion of Andrea D. Kantor, Esq., Associate General Counsel,
                  Registrant, as to the legality of the securities being 
                  registered*
               
         23.1 --  Consent of Independent Auditors*
               
         23.2 --  Consent of Andrea D. Kantor (included in Exhibit 5.1)*

- ----------------
* Filed herewith.


Item 17.  Undertakings.

     Insofar as  indemnification  for  liabilities  arising under the Securities
Act, as amended (the "Securities  Act") may be permitted to directors,  officers
and controlling persons of the Registrant pursuant to the foregoing  provisions,
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  Securities  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
Securities Act and will be governed by the final adjudication of such issue.

     A. The  undersigned  Registrant  hereby  undertakes  that,  for purposes of
determining  any  liability  under  the  Securities  Act,  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 this
Registration  Statement  shall  be  deemed  to be a new  registration  statement
relating to the securities  offered herein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

    B. 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;


<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; and

          (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 (1)(i) and (1)(ii) 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 this
Registration Statement.

     (2) That, for the purpose of determining any liability under the Securities
Act, 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 remains unsold at the termination of
the offering.



<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 has duly caused this Amendment No. 1 to
Registration Statement to be signed on its behalf by the undersigned,  thereunto
duly  authorized,  in the City of New York,  and the State of New York,  on this
22nd day of June, 1998.

                                                  INTERFERON SCIENCES, INC.

                                                  By: /s/ LAWRENCE M. GORDON
                                                      ----------------------
                                                          Lawrence M. Gordon
                                                        Chief Executive Officer

    Pursuant to the  requirements  of the Securities Act of 1933, this Amendment
No. 1 to  Registration  Statement  has been signed by the  following  persons in
their capacities on June 22, 1998.

             
    /s/ SAMUEL H. RONEL, PH.D.        
        --------------------------
        Samuel H. Ronel, Ph.D.                Chairman of the Board
                       
    /s/ LAWRENCE M. GORDON            
        ----------------------              Chief Executive Officer and Director
        Lawrence M. Gordon                    (Principal Executive Officer)
           
    /s/ STANLEY G. SCHUTZBANK, PH.D.   
        --------------------------------   
        Stanley G. Schutzbank, Ph.D.          President and Director
            
 
        --------------------
        Leon Botstein, Ph.D.                  Director  
           
           
    /s/ JEROME I. FELDMAN                  
        -------------------
        Jerome I. Feldman                     Director
           

        ------------------------
        Sheldon L. Glashow, Ph.D              Director
           

    /s/ SCOTT N. GREENBERG
        ----------------------
        Scott N. Greenberg                    Director
           

        --------------------
        Roald Hoffmann, Ph.D                  Director
          

        ------------------
        Martin M. Pollak                      Director                         
                      
             
    /s/ DONALD W. ANDERSON
        -------------------                   Controller (Principal Accounting 
        Donald W. Anderson                    and Financial Officer)

           
     The  foregoing  constitute  a  majority  of the  members  of the  Board  of
Directors.


<PAGE>



                                INDEX TO EXHIBITS

                                                               Sequentially
Exhibit                                                          Numbered  
Number                     Description                            Page
- -------                    -----------                         ------------

5.1                  Opinion of Andrea D. Kantor, Esq.,
                     Associate General Counsel, Registrant,
                     as to the legality of the securities 
                     being registered*

23.1                 Consent of Independent Auditors*

23.2                 Consent of Andrea D. Kantor (included in Exhibit 5.1)*



- -----------------
* Filed herewith.


<PAGE>




                                                                   EXHIBIT 5.1

Interferon Sciences, Inc. [LOGO] [LETTERHEAD]



                                                        June 22, 1998


Interferon Sciences, Inc.
783 Jersey Avenue
New Brunswick, New Jersey 08901

Gentlemen:

     Reference is made to the  Registration  Statement on Form S-3 of Interferon
Sciences,  Inc. (the  "Company")  relating to the  registration of shares of the
Company's common stock, par value $.01 per share (the "Common Stock").

     I am Associate  General  Counsel of the  Company,  and have  examined  such
corporate records and other documents as I have deemed relevant.  Based upon the
above,  I am of the  opinion  that the Common  Stock to be sold  pursuant to the
Registration  Statement is validly  authorized  and,  when sold  pursuant to the
valid  authorization  of the Board of  Directors  of the Company  against  legal
payment therefor, will be validly issued, fully paid, and non-assessable.

     I  hereby  consent  to the  filing  of this  opinion  as an exhibit to the
Registration Statement and the use of my name in the Prospectus.

                                                          Very truly yours,



                                                          Andrea D. Kantor







                                                                  EXHIBIT 23.1


                         CONSENT OF INDEPENDENT AUDITORS


Board of Directors
Interferon Sciences, Inc.




     We consent to the use of our report incorporated herein by reference and to
the reference to our firm under the heading "Experts" in the prospectus.

     Our report  dated April 2, 1998  contains  an  explanatory  paragraph  that
states that the Company has suffered recurring losses from operations and has an
accumulated  deficit which raise substantial doubt about its ability to continue
as a going concern.  The  consolidated  financial  statements do not include any
adjustments that might result from the outcome of that uncertainty.


                                                         KPMG PEAT MARWICK LLP



New York, New York
June 22, 1998





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