SHEFFIELD PHARMACEUTICALS INC
10-K, 2000-03-29
PHARMACEUTICAL PREPARATIONS
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-K

[ X ]     ANNUAL  REPORT  PURSUANT  TO  SECTION  13 OR 15(d) OF THE  SECURITIES
          EXCHANGE ACT OF 1934

                   For the fiscal year ended December 31, 1999
                                       OR
[   ]     TRANSITION  REPORT  PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
          EXCHANGE ACT OF 1934 (NO FEE REQUIRED)

                         Commission file number 1-12584

                         SHEFFIELD PHARMACEUTICALS, INC.
             (Exact name of registrant as specified in its Charter)

        DELAWARE                                 13-3808303
(State of Incorporation)              (IRS Employee Identification Number)

425 SOUTH WOODSMILL ROAD                 63017             (314) 579-9899
ST. LOUIS, MISSOURI                     (Zip Code)     (Registrant's telephone,
(Address of principal executive offices)                 including area code)


Securities registered pursuant to Section 12(b) of the Act:

         Title of Class                Name of each exchange on which registered
 Common Stock. $.01 par value                   American Stock Exchange


          Securities registered pursuant to Section 12(g) of the Act:

                                      None

            Indicate  by check mark  whether the  registrant:  (1) has filed all
reports  required to be filed by Section 13 or 15(d) of the Securities  Exchange
Act  during  the  preceding  12  months  (or for such  shorter  period  that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days. /X/ Yes / / No

            Indicate by check mark if disclosure  of  delinquent  filers to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best  of  the  registrant's   knowledge,  in  definitive  proxy  or  information
statements  incorporated  by  reference  in Part  III of this  Form  10-K or any
amendment to this Form 10-K. / /

            The aggregate  market value at March 20, 2000 of the voting stock of
the registrant held by non-affiliates (based upon the closing price of $6.00 per
share  of  such  stock  on  the  American  Stock  Exchange  on  such  date)  was
approximately $136,000,000.  Solely for the purposes of this calculation, shares
held by  directors  and  officers  and  beneficial  owners of 10% or more of the
Company's  Common Stock of the  registrant  have been  excluded.  Such exclusion
should not be deemed a determination or an admission by the registrant that such
individuals are, in fact, affiliates of the registrant.

            Indicate   the  number  of  shares   outstanding   of  each  of  the
registrant's  classes of common equity,  as of the latest  practicable  date: At
March 20, 2000,  there were  outstanding  27,872,802  shares of the registrant's
Common Stock, $.01 par value.



<PAGE>

                       DOCUMENTS INCORPORATED BY REFERENCE

Certain  portions of the Company's  Annual Report to  Stockholders  for the year
ended  December  31, 1999 are  incorporated  by reference in Items 6, 7 and 8 of
this Annual Report on Form 10-K and attached as Exhibit 13 hereto.

Certain portions of the Registrant's  definitive proxy statement to be filed not
later  than  April 5,  2000  pursuant  to  Regulation  14A are  incorporated  by
reference in Items 10 through 13 of Part III of this Annual Report on Form 10-K.

                                       2
<PAGE>




            PART I

Item 1.     Business

The Company

            Sheffield   Pharmaceuticals,   Inc.   (formerly   Sheffield  Medical
Technologies  Inc.)  ("Sheffield"  or  the  "Company")  was  incorporated  under
Canadian law in October 1986. In May 1992, the Company became  domesticated as a
Wyoming Corporation pursuant to a "continuance"  procedure under Wyoming law. In
January 1995, the Company's  shareholders approved the proposal to reincorporate
the Company in Delaware,  which was effected on June 13, 1995.  The Company is a
specialty pharmaceutical company focused on development and commercialization of
later stage,  lower risk  pharmaceutical  products  that  utilize the  Company's
unique  proprietary  pulmonary  delivery  technologies.  The  Company  is in the
development stage and, as such, has been principally  engaged in the development
of its pulmonary  delivery  systems.  The Company and its  development  partners
currently has nine products in various stages of development.

            In 1997, the Company  acquired the Metered Solution Inhaler ("MSI"),
a  portable  nebulizer-based  pulmonary  delivery  system,  through a  worldwide
exclusive license and supply arrangement with Siemens AG ("Siemens"). During the
second half of 1998, the Company acquired the rights to an additional  pulmonary
delivery technology, the Aerosol Drug Delivery System ("ADDS") from a subsidiary
of  Aeroquip-Vickers,  Inc.  ("Aeroquip-Vickers").  The ADDS technology is a new
generation  propellant-based  pulmonary  delivery system.  Additionally,  during
1998,  Sheffield licensed from Elan Corporation,  plc, the Ultrasonic  Pulmonary
Drug Absorption  System  ("UPDAS(TM)"),  a novel  disposable unit dose nebulizer
system, and Elan's Absorption Enhancing Technology ("Enhancing  Technology"),  a
therapeutic agent to increase the systemic absorption of drugs. In October 1999,
the Company licensed Elan's Nanocrystal(TM)  dispersion technology to be used in
developing certain steroid products.

Business Strategy

            The  Company's  business  strategy is to seek out  opportunities  to
acquire and develop commercially attractive  pharmaceutical products,  primarily
in the area of pulmonary drug delivery.  The Company  recognizes  that no single
technology  in the area of  pulmonary  drug  delivery  will  meet  the  needs of
patients and  providers of the wide variety of compounds  (both for  respiratory
disease and  systemic  disease  therapy)  that may benefit  therapeutically  and
commercially from pulmonary delivery. As a result, it remains the Company's goal
to acquire or in-license a portfolio of pulmonary delivery  technologies to meet
the broadest based market opportunity.  The Company intends to selectively enter
into joint  ventures or other forms of  strategic  alliances to defray or reduce
significant   development  and   manufacturing   costs   associated  with  these
opportunities  that  otherwise  might be borne by the  Company  while  retaining
certain commercial rights.

            The Company will  continue to be  opportunistic  in the  acquisition
and/or  in-licensing  of  technologies  or  products  that  meet  the  Company's
strategic objectives.  Such opportunities  include: (1) technologies or products
that meet the needs of healthcare communities that are not currently served, (2)
technologies  or products that can effectively be developed when viewed in light
of the  commercial  opportunity  and  competitive  environment  within  the U.S.
market,  (3)  technologies  or products that will be of substantive  interest to
other  companies with regard to  co-development  and  co-marketing  with limited
incremental  investment by the Company,  and (4) products and technologies  with
the potential for marketing to a specialty group or limited physician  audience.
The Company plans to pay special attention to platform  technologies that can be
developed into multiple applications in varying therapeutic categories.

Strategic Alliances

            The  Company  believes  a less  costly,  more  predictable  path  to
commercial  development of therapeutics can be achieved through the creative use
of collaborations and alliances,  combined with state-of-the-art  technology and
experienced management. The Company is applying this strategy to the development
of both respiratory and systemic pharmaceutical products to be delivered through
the Company's  proprietary  pulmonary  delivery  systems.  Using these pulmonary
delivery systems as platforms,  the Company has established  strategic alliances
for  developing  its initial  products  with Elan,  Siemens and Zambon Group SpA
("Zambon").

                                       3
<PAGE>


            In a collaboration with Zambon, the Company is developing a range of
pharmaceutical  products  delivered  by the MSI to treat  respiratory  diseases.
Under its agreement with Zambon, MSI commercial rights for respiratory  products
have  been  sublicensed  to Zambon in  return  for an equity  investment  in the
Company (approximately 10%). The Company has maintained  co-marketing rights for
the U.S. The Company's ability to co-market MSI respiratory products in the U.S.
requires no additional payment by the Company.  Zambon has committed to fund the
development  costs for  respiratory  compounds  delivered  by the MSI as well as
making  certain  milestone  payments and royalties on net sales  resulting  from
these MSI products to the Company.  Initial  products  for  respiratory  disease
therapy include albuterol, ipratropium, cromolyn and inhaled steroids.

            As part of a  strategic  alliance  with  Elan,  a  world  leader  in
pharmaceutical  delivery  technology,  the Company is  developing  therapies for
systemic  (non-respiratory) diseases to be delivered to the lungs using both the
ADDS and MSI.  In  1998,  the  systemic  applications  of the MSI and ADDS  were
licensed to Systemic Pulmonary Delivery, Ltd. ("SPD"), a wholly owned subsidiary
of the Company. In addition, two Elan technologies,  UPDAS(TM) and the Enhancing
Technology,  have also been licensed to SPD. The Company has retained  exclusive
rights  outside of the strategic  alliance to respiratory  disease  applications
utilizing  the ADDS  technology  and the two  Elan  technologies.  Two  systemic
compounds  for  pulmonary  delivery are  currently  under  development.  For the
treatment of  breakthrough  pain, the Company is developing  morphine  delivered
through the MSI. Ergotamine,  a therapy for the treatment of migraine headaches,
is currently being developed for use in the ADDS.

                  In  addition to the above  alliance  with Elan,  in 1999,  the
Company and Elan formed a joint  venture,  Respiratory  Steroid  Delivery,  Ltd.
("RSD"),   to  develop  certain  inhaled  steroid   products  to  treat  certain
respiratory diseases using Elan's  NanoCrystal(TM)  dispersion  technology.  The
inhaled  steroid  products to be developed  include a  propellant-based  steroid
formulation  for delivery though the ADDS, a  solution-based  unit-dose-packaged
steroid formulation for delivery using a conventional tabletop nebulizer,  and a
solution-based steroid formulation for delivery using the MSI system, subject to
further agreement with Zambon.

            Outside of these alliances, the Company owns the worldwide rights to
respiratory disease applications of all of its technologies, subject only to the
MSI respiratory rights sublicensed to Zambon.

            In addition to the above,  the  Company  has several  agreements  in
place for the manufacture of its delivery  systems.  Siemens,  a  multi-national
engineering and electronics conglomerate, serves as the manufacturer of the MSI.
Siemens also  provides  ongoing  technical  support in the design and testing of
pharmaceutical   products  in  the  MSI.  The  interchangeable   drug-containing
cartridges in the MSI are being  assembled and filled by Cheasapeake  Biological
Laboratories  of  Baltimore,  Maryland.  During  1999,  the  Company  signed  an
agreement with an aerosol manufacturer, Medeva Pharmaceuticals MA, Inc., for the
manufacture and supply of certain products to be delivered by the ADDS.

            The  Company  is also  currently  in  discussions  with a number  of
pharmaceutical  and biotechnology  companies about potential  collaborations for
developing  specific  compounds  (both  respiratory  and  systemic) in the ADDS.
Unlike the MSI,  ADDS is a technology  that lends itself to  individual  product
applications  in the  respiratory  market.  While  the  ADDS  technology  may be
applicable to a wide range of respiratory products,  the Company believes that a
full line of products delivered by ADDS is not necessary for commercial success.
The  reverse is true with the MSI,  since one of the MSI's  primary  competitive
advantages  is the  delivery of a range of drugs in  interchangeable  cartridges
used with the parent nebulizer device.

Pulmonary Delivery Market Environment

            The Company competes in the pulmonary delivery market. The principal
use of pulmonary delivery has been in the treatment of respiratory diseases such
as asthma,  chronic obstructive  pulmonary disease ("COPD") and cystic fibrosis.
In 1998,  industry sources estimate there were approximately 35.5 million asthma
patients and 49.5 million COPD  patients in the world.  These  sources  indicate
that the number of newly  diagnosed  patients  is growing at a rate in excess of
10%  annually  due to an  increase in  worldwide  air  pollution  levels and the
overall  aging of the  population.  By the year 2005,  the Company  expects that
there will be more than 19 million asthma patients in the United States alone.

            In addition,  the  competitive  marketplace  has been  significantly
affected by the worldwide phase out of  clorofluorocarbons  ("CFCs") pursuant to
the Montreal  Protocol.  CFCs are the propellants  traditionally used in metered
dose inhalers  ("MDIs"),  which are the most common form of pulmonary  delivery.
Companies  in the  respiratory  market have  initiated  significant  programs to
redevelop  existing  products  using  alternative  propellants,  dry  powders or
nebulizers.

                                       4
<PAGE>


            There  is  considerable  interest  in  applying  pulmonary  delivery
technology to systemic  therapies  that would benefit from the  relatively  easy
administration  to the circulatory  system through the lungs.  Work on pulmonary
delivery  of  insulin  by  other  pulmonary   delivery  companies  has  received
significant  public  notice.  There is a range of therapies that could provide a
significant  market  opportunity if available in a pulmonarily  delivered  form.
There is also significant  advantage in aerosol therapy for respiratory disease.
Pulmonary  administration  delivers  the  medication  directly  onto the  lung's
epithelial  surfaces.  In many cases,  this means that drugs can be effective in
very low doses -- eliminating the side effects usually  associated with systemic
administration.

            Today,  three  types of devices are widely  used in  pulmonary  drug
administration: metered dose inhalers, dry powder inhalers, and nebulizers.

            Metered Dose  Inhalers.  Currently,  MDIs are the most commonly used
            pulmonary delivery system. It is estimated that in the United States
            80% of pulmonary drug delivery is via MDI, with the majority of this
            use coming from adults with asthma and COPD.

            The main components of an MDI include a canister containing the drug
            mixed with propellant and surfactant,  a mouthpiece that acts as the
            delivery  conduit and the actuator seat for the release of the drug.
            The initial  velocity of  particles as they leave an inhaler is very
            high --  approximately  60 mph --  resulting  in wasted  drug if the
            patient is not able to coordinate  his/her  breath with the delivery
            of aerosol  into the mouth.  A number of studies  have  demonstrated
            that  as  many  as 60% of  patients  cannot  accurately  time  their
            inspiration  with the  actuation of their  inhaler  which results in
            under  medication  and lack of  compliance.  Typically,  only 20% of
            delivered drug actually reaches the lungs.

            The   primary   advantages   of  an  MDI  include  its  small  size,
            portability, fast usage time, and its availability for use with most
            respiratory   drugs.   Disadvantages   of  an  MDI  include  patient
            coordination  issues  and  efficient  dose  delivery.  Additionally,
            because the use of CFCs  traditionally used in MDIs are being phased
            out by  international  agreement  (Montreal  Protocol),  alternative
            propellants and  formulations  are being  developed.  Over time, all
            current MDI users will be required to move to a non-CFC MDI or other
            alternative  delivery  systems.  The majority of U.S. patients favor
            aerosol MDIs although a sizable  percentage may not coordinate  them
            properly.

            Dry Powder Inhalers. Dry powder inhalers ("DPIs") were introduced in
            the 1960s as single-dose  inhalers.  In these  devices,  the drug is
            loaded as a unit dose that is mechanically  released as a powder for
            inhalation prior to each use. To date,  these relatively  cumbersome
            systems  have been the primary  form of DPI  available in the United
            States,  and  account  for  approximately  1% of the  total  aerosol
            delivery market.

            The  inconvenience  of the single dose DPI has been overcome outside
            of the U.S. with the development and introduction of multi-dose DPIs
            that can deliver up to 200 doses of  medication.  However,  like the
            single dose systems, they are inspiratory flow rate dependent;  that
            is,  the  amount  of  drug  delivered  to the  lung  depends  on the
            patient's ability to inhale.

            Two of the  most  significant  advantages  of  DPIs  include  (1) no
            hand-breath  coordination  is  required  as with MDIs;  and (2) they
            contain no CFCs. However, most require a high inspiratory flow rate,
            which can be  problematic  in  younger  patients  or  patients  with
            compromised   lung  function.   In  addition,   they  often  present
            difficulties for those with manual disabilities (e.g., arthritis) or
            limited vision and,  depending upon the powder load delivered,  they
            may   induce   acute   bronchospasm   in   sensitive    individuals.
            Additionally,  multi-dose  powder  inhalers  are subject to moisture
            sensitivity  either from the  environment or patient breath and have
            had difficulty  meeting U.S.  regulatory  standards for dose-to-dose
            variation.

            Nebulizers.  The third  widely used aerosol  delivery  system is the
            nebulizer.  Jet  nebulizers,   which  are  the  most  commonly  used
            nebulizer,  work on a stream of  compressed  air or  oxygen  that is
            forced  through a narrow  tube lying  just above the  surface of the
            liquid to be nebulized.  It takes  approximately 10 to 15 minutes to
            nebulize this amount of liquid. Studies suggest keeping the duration
            of nebulization below 10 minutes, as longer durations are associated
            with poor compliance. During nebulization only about 10% of the drug
            is delivered to the lungs;  about 80% gets trapped in the reservoir,
            tubing and mask; the rest is exhaled.

            Nebulizers  can be  used  for a wide  range  of  patients,  but  are
            especially  useful for those older and younger  patients  who cannot
            manage other  inhaler  devices.  Nebulizers  also play a key role in
            emergency  room and intensive care treatment for patients with acute
            bronchospasm.  Another  feature  exclusive to  nebulizers  is that a
            mixture  of  drugs  can be  administered  in one  sitting.  However,
            currently  approved  nebulizers are bulky  table-top  units that are
            time  consuming,  have a high  initial  cost (often in excess of the
            amount  reimbursable  by  managed  care)  and  can be  noisy  during
            operation.

                                       5
<PAGE>

Metered Solution Inhaler

            The MSI pulmonary drug delivery system has been developed to provide
the therapeutic benefit of nebulization with the convenience of pressurized MDIs
in one  system.  The MSI  was  developed  to  meet  specific  needs  within  the
respiratory market,  particularly for pediatric and geriatric patients suffering
from asthma and COPD.

Description of the MSI

                  The MSI is comprised of two main  components:  (1) a reusable,
pocket-size  inhaler unit developed and manufactured for the Company by Siemens;
and (2)  interchangeable  drug cartridges  containing  multiple doses of drug in
solution  assembled  and  filled  by  Chesapeake  Biological  Laboratories.  The
cartridges  are an integral  part of the total system.  The cartridge  plus each
drug formulation  will be the subject of a separate drug device  combination New
Drug Application ("NDA").

            The basic  technology of the system involves the rapid  nebulization
of therapeutic agents using ultrasonic waves. This produces a concentrated cloud
of medication delivered through the mouthpiece over a two to three second period
for  inhalation.  The key components of the technology are housed in the inhaler
unit. They are the rechargeable battery-operated motor, ultrasonic horn and drug
cartridge. The pocketsize MSI allows for administration of a range of drugs in a
single, simple-to-use,  environmentally friendly delivery system. Each cartridge
contains,  depending on formulation,  approximately a one to two month supply of
the drug.

            To use the MSI system,  a patient  simply  selects  the  appropriate
color-coded  drug  cartridge and places it into the chamber of the inhaler unit.
Pressing the "on" button  activates a small  electrical  motor that transports a
precise  dose of drug  from the  cartridge  chamber  to the  ultrasonic  horn --
transforming the solution into an aerosolized  cloud. The patient's  inspiratory
breath  carries  this  cloud of  medication  directly  to the lungs  where it is
needed.  The dose delivered by the MSI is very accurate and consistent  because:
(1) the MSI is  designed  to be  inspiratory  flow  rate  independent;  that is,
delivery  of the drug  does not  depend  upon the  patient's  ability  to inhale
forcefully,  and (2) the MSI  does not  require  a high  level  of  coordination
between  inspiration and actuation of the device.  The patient's  natural breath
carries  the  medication  directly to the lungs,  minimizing  the amount of drug
deposited in the mouth and throat.

MSI Advantages

            The Company  believes that the MSI provides  significant  advantages
over other drug  delivery  systems.  It is  particularly  suited for younger and
older asthma  patients,  as well as for older COPD patients who have  difficulty
using MDIs and currently have to depend on larger, more time-consuming  tabletop
nebulizers  for  delivery  of  their  medications.  These  potential  advantages
include:

            Accuracy.  The superior engineering and  patient-friendly  design of
            the MSI is intended  to provide  minimal  dose-to-dose  variability.
            Patients can therefore expect to receive the right  therapeutic dose
            consistently.  Testing of the MSI system has shown that dose-to-dose
            variability  with the MSI is  significantly  better than the current
            FDA requirement.

            Enhanced Patient  Compliance.  The pocketsize,  portable MSI unit is
            designed to combine the therapeutic  benefits of  nebulization  with
            the convenience of pressurized metered dose inhalers.  The drug dose
            is precisely measured and delivered in seconds, as compared to 10 to
            15 minutes or more for the typical nebulizer.  The device is easy to
            operate,   requiring  minimal  coordination  between  actuation  and
            inhalation for proper drug delivery.  These benefits are expected to
            improve patient  compliance with the proper  administration of their
            respiratory medication.  Another expected factor in enhanced patient
            compliance is the broad range of drugs that can be  accommodated  by
            the MSI,  allowing  patients on multiple  medications to rely on one
            simple delivery system.

            Inspiratory  Flow  Rate  Independence.   Unlike  most  of  the  DPIs
            currently  available  (or in  development),  the MSI is  designed to
            achieve a consistent and significant level of drug deposition over a
            broad range of inspiratory flow rates. This is especially  important
            in younger  patients  or patients  with  compromised  lung  function
            (e.g.,  during an asthma attack) who have a difficult time breathing
            normally.

            Versatility.  Many  asthma and COPD  patients  are  taking  multiple
            inhalation  medications.  The MSI accommodates  interchangeable drug
            cartridges  to  allow  for the  administration  of a broad  range of
            frequently  used  respiratory  drugs  in  a  single,   simple-to-use
            delivery system. The system includes an early warning mechanism that
            signals when the  batteries  need  recharging or when the dosator is
            not  functioning  properly and a dose counter  indicating when a new
            inhaler unit is required.  These user-friendly  features result in a
            simplified dosing procedure for both patients and their caregivers.

                                       6
<PAGE>

            Pulmonary  Targeting.  The particle  size of the inhaled  medication
            affects the effectiveness of drug delivery to the lung. Generally, a
            drug is  "respirable"  if the particle  size is between two and five
            microns.  Larger  particles tend to deposit in the inhaler or in the
            patient's  mouth and throat.  Smaller  particles tend to be exhaled.
            Within  the  respirable  range,  the  MSI  is  designed  to  deliver
            particles  specifically  targeted for certain portions of the lungs;
            for example,  the central lung for local  treatment or the deep lung
            for  enhanced   absorption   into  the  blood  stream  for  systemic
            therapies.

            Environmentally  Friendly.  CFCs, the most commonly used  propellant
            for MDI aerosols, are believed to adversely affect the Earth's ozone
            layer.   They  are  subject  to  worldwide   regulations   aimed  at
            eliminating  their  production  and use within the decade  under the
            Montreal  Protocol.  The MSI does not use CFCs or any other  type of
            ozone depleting propellant.

            Economical.  The Company  believes  that the MSI offers  significant
            value to the patient because it is designed to allow a single device
            to be  used  with  a  complete  family  of  respiratory  medications
            available in cost-effective  interchangeable cartridges. The inhaler
            unit itself is expected  to have a life of two to three  years.  The
            initial  cost of the inhaler  unit is expected to be within the cost
            range that managed  care  providers  will  reimburse  patients.  The
            Company  anticipates  the combined cost to the patient of the device
            plus the drug filled  cartridges  will be  comparable to the average
            cost per dose of the standard metered dose inhaler.

MSI Product Pipeline in Development

            Through development  alliances with strategic  partners,  Zambon and
Elan, the Company is implementing a broad development  strategy for the MSI. The
Company and Zambon are developing a range of widely used  respiratory  drugs for
delivery  in the MSI.  Potential  candidates  for  respiratory  disease  therapy
include  albuterol,  ipratropium,   cromolyn,  inhaled  bronchial  steroids  and
combination  products,  each of which is  described  below.  Most  patients  who
experience  respiratory disease commonly use multiple medications to treat their
conditions

Among the drugs being developed for  respiratory  applications in the MSI system
are:

                  Albuterol.  Albuterol is a beta agonist used as rescue therapy
            for  patients  with  asthma  and  COPD.  It is the  largest  selling
            respiratory  compound  with U.S.  sales of over $500  million in all
            dosage  forms.  It  is  available  in a  metered  dose  inhaler  and
            nebulizer solution as well as solid and liquid dosage forms.

                  Status:  The Company initiated a Phase I/II pediatric clinical
            trial in  September  1999  comparing  the  safety  and  efficacy  of
            albuterol  to the  market-leading  metered dose  inhaler.  Sheffield
            initiated  a Phase II  clinical  trial in  December  1999 which will
            compare the MSI to a  conventional  albuterol  metered dose inhaler.
            Findings  from Phase I/II studies  demonstrated  that the MSI,  when
            compared to a commercially available metered dose inhaler, delivered
            comparable  amounts of  albuterol  to the whole lung,  significantly
            reduced   oropharyngeal   deposition,    and   achieved   equivalent
            single-dose therapeutic efficacy and tolerability.

                  Ipratropium. Ipratropium is a bronchodilator used primarily to
            treat COPD  patients.  It is useful  because of its  anticholinergic
            properties,  which reduce pulmonary congestion. It is available in a
            metered dose inhaler,  nebulizer solution and a combination  product
            with albuterol.

                  Status:  The Company  initiated a Phase I/II clinical trial in
            Europe in January 2000 assessing the safety and efficacy compared to
            a commercially  available ipratropium product delivered by a metered
            dose inhaler and placebo in patients with COPD.  An  Investigational
            New Drug  Application  ("IND") is being prepared for filing with the
            Food and Drug Administration ("FDA").

                  Cromolyn. Cromolyn is a non-steroidal,  anti-inflammatory drug
            used to reduce the underlying bronchial inflammation associated with
            asthma.  It is extremely  safe and it is most commonly used to treat
            pediatric  patients.  It is  available in a metered dose inhaler and
            nebulizer solution.

                  Status: An IND is being prepared for filing with the FDA.

                  Inhaled Bronchial  Steroids.  Inhaled  bronchial  steroids are
            anti-inflammatory  agents. They address the underlying  inflammation
            in the lungs of asthma and COPD  patients.  They are  available in a
            metered dose inhaler.  Steroids are the fastest growing  category in
            the respiratory market, growing at 20% per year.

                  Status: Formulation work is currently underway.


                                       7
<PAGE>

                  Other Respiratory  Therapies.  In addition to the drugs listed
            above, the Company and Zambon are assessing the market potential for
            certain other respiratory therapies. These therapies are expected to
            include a combination of an anti-inflammatory  and beta agonist, and
            an anticholinergic and beta agonist, as well as antibiotics,  cystic
            fibrosis  treatments  and a range of early stage  biotech  compounds
            that target respiratory disease.

            Systemic  Applications:  Through its development alliance with Elan,
the Company is currently  developing  certain  drugs for  systemic  treatment by
pulmonary delivery through the MSI. The first of these drugs,  morphine,  is for
the treatment of severe pain. The pain management  market includes patients with
cancer, post-operative,  migraine headache and chronic persistent pain. Narcotic
analgesics  for  treatment of these severe forms of pain are estimated to exceed
$1.0 billion in worldwide  sales in the year 2000.  The Company has identified a
market opportunity for a rapid-acting,  non-invasive  treatment for breakthrough
pain.


            Status:    In   July   1999,   the   Company   completed   a   gamma
scintigraphy/pharmacokinetic  trial comparing  morphine delivered via the MSI to
subcutaneous injection.  The MSI demonstrated good pulmonary deposition and very
rapid absorption,  more rapid peak blood levels vs.  subcutaneous  injection and
low oral and throat  deposition.  The Company is currently in discussions with a
number of companies for the outlicensing and development of this product.

Aerosol Drug Delivery System

            The ADDS,  a new  generation  MDI, was  developed  to correct  major
deficiencies  associated  with  existing  MDI  technology.  MDIs  have  provided
convenient, safe, self-administered treatment for over 30 years and decrease the
cost of therapy  because  they can be used by the  patient at home with  minimal
medical supervision.  However,  proper use of current MDIs requires training and
precise execution of the delivery technique. For these reasons, many patients do
not  use  their  MDIs in the  prescribed  manner  to  coordinate  actuation  and
inhalation.  Incorrect  technique  has been  shown to  result  in  little  or no
benefits from MDI use in half of all adult patients and in a greater  proportion
of children. Moreover, because of these coordination issues, most children under
age five cannot use a standard MDI.

            Even with correct  technique,  current MDIs deliver less than 20% of
the drug to the lungs of the patient.  The  remaining  80% of the drug is wasted
upon deposition on the back of the mouth,  or by completely  missing the airway.
This results from: (1) the high linear velocity (two to seven  meters/second) of
the aerosol jet as it discharges;  (2) incomplete  evaporation of the propellant
leading to large size  droplets that deposit in the mouth and larynx rather than
reaching  the  lung;  and  (3)  inadequate  mixing  resulting  in a  non-uniform
distribution of drug particles in the inspiratory flow stream. Drug deposited in
the mouth and throat can be swallowed and absorbed  systemically or, in the case
of inhaled  steroids,  may create a local  concentration of the drug that causes
immunosuppression   response  and  the  development  of  fungal  infections.  In
addition,  swallowing  beta agonist  bronchodilators  causes  relaxation  of the
smooth  muscles of the  gastrointestinal  tract that  decreases  activity of the
stomach.

            From a  therapeutic  view,  the most  serious  problem  with MDIs is
inconsistency  of delivery.  With existing MDIs the actual dose can vary from 0%
to 300% of the  intended  dose.  Patients  may not  receive  sufficient  drug to
achieve  a  therapeutic  effect,  or they may  overdose  with  undesirable  side
effects. These conditions can lead to the need for emergency treatment.

            A major  advantage for the ADDS  technology is that it uses the same
aerosol  canisters  and valves as are  currently  used in  existing  MDIs.  As a
result,  existing  aerosol  facilities  will be able to produce  canisters  with
formulations  optimized for use in ADDS. The only additional step required is to
place the  aerosol  canister  in the  "device"  prior to final  packaging.  This
results in a cost effective  product and provides numerous benefits to patients.
The device along with the canister are disposable when the canister is empty.

            The ADDS technology features two improvements over existing MDIs and
dry powder inhalers.  Fluid dynamics  modeling and in-vitro trials indicate that
up to 50% of drug  emitted by the ADDS  reaches  the lungs with oral  deposition
reduced to less than 10%.  Because of this increase in  efficiency,  ADDS should
require  less drug per  actuation  than  existing  devices to  achieve  the same
therapeutic effect. This will result in more unit doses per drug canister than a
conventional MDI, with less potential for adverse reactions.

            ADDS also features a unique  proprietary  triggering  mechanism that
actuates at the correct time during inhalation.  It is designed to automatically
adjust to the patient's breathing pattern to accommodate  differences in age and
disease  state.   This  synchronous   trigger  is  designed  to  reduce  patient
coordination problems and enhance patient compliance.

                                       8
<PAGE>

Description of ADDS

            The ADDS  technology  utilizes  a  standard  aerosol  MDI  canister,
encased in a compact device that provides an aerosol  flow-control chamber and a
synchronized   triggering  mechanism.   Manipulation  of  the  discharged  drug-
containing   aerosol  cloud  is  key  to  optimization  of  the  efficiency  and
consistency for MDIs. The unique features of ADDS are:

            Aerosol  Flow-Control  Chamber.  The ADDS design uses fluid dynamics
            to: (1) reduce the velocity of the drug relative to the  inspiratory
            breath velocity (less than one meter/second); (2) increase residence
            time of the aerosol droplets before exiting the device to allow near
            complete  evaporation  of  the  propellant;   (3)  increase  droplet
            dispersion and mixing,  thus  increasing  evaporation  and improving
            vapor  fraction at every  point along the flow path;  (4) reduce the
            diameter of the drug particles at the exit plane of the device;  (5)
            decrease inertia of droplets to reduce  impaction;  and (6) optimize
            timing of dose  discharge with  inspiratory  breath for maximum drug
            deposition in lungs.

            Synchronizing  Trigger Mechanism.  The aerosol  flow-control chamber
            allows  the  patient  to  inhale  through  the  device  at a  normal
            breathing rate,  instead of a forced breath.  The inspiratory breath
            establishes  flow fields  within the device  that mix and  uniformly
            disperse the drug in the breath.  In the mouthpiece,  nearly all the
            propellant is evaporated leaving only drug particles to be inspired,
            allowing a dramatic  increase in the amount of drug delivered to the
            lungs. Only small amounts of drug deposit in the mouth and throat. A
            triggering  and  timing  mechanism  that is  synchronized  with  the
            patient's  inspiratory  breath control the discharge of the metering
            valve. ADDS can accommodate different flowrates,  so any patient can
            activate the triggering device. Similarly, the timing mechanism will
            automatically adjust to the flow generated by the patient,  delaying
            or hastening  discharge in  proportion  to the total volume  passing
            through  the  flow  control  chamber.   This  feature   accommodates
            differences in inspiratory flow  characteristic of pulmonary disease
            states in children, adults and the infirm.

ADDS Advantages

            The  Company  believes  that  the  ADDS  technology  possesses  many
potential  competitive  advantages over other  inhalation  systems in both local
respiratory and systemic  applications.  It is applicable to all age categories,
eliminating  the most  troublesome  problems of aerosol  metered dose  delivery.
Increased  efficiency allows for potential  application to proteins and peptides
formerly discarded as candidates for aerosol delivery.

            The  performance   characteristics  of  the  ADDS  are  expected  to
            translate into multiple benefits, including:

            Improved Drug Delivery Efficiency.  The majority of the drug emitted
            by the ADDS is  delivered  to the lungs  while less than 10% is lost
            through  deposition in the mouth and throat.  The improved  delivery
            efficiency  enhances  efficacy,  reduces  side  effects and provides
            greater consistency of dose administration.

            Greater Patient Compliance. The ADDS eliminates technique dependence
            for simple, consistent dose-to-dose delivery,  resulting in improved
            compliance with prescribed therapy.

            Broader  Patient  Base.  The ADDS can be  prescribed  for a  broader
            patient  base  since  it  is  designed  to be  self-administered  by
            children and the elderly as well as adult patients.

            Pharmacoeconomic Benefit. The ADDS has increased delivery efficiency
            with less  waste,  so  patients  can  receive  more  unit  doses per
            standard  canister.  This  allows  for a lower  drug cost per day in
            addition to reducing  prescription  and payor  costs  because  fewer
            pharmacy visits are required.

ADDS Product Pipeline in Development

            ADDS Systemic  Therapies.  The  development  of systemic drugs using
ADDS is being  conducted as part of the Company's  alliance with Elan. The first
product  to be  developed  in the  ADDS  is  ergotamine.  Ergotamine,  an  alpha
adrenergic  blocking agent, is a therapy to stop or prevent  vascular  headaches
such as migraines.  Migraine  headaches affect 16-18 million  Americans.  Annual
sales for the  migraine  therapy  market are in excess of $2.3 billion with many
patients unable to get satisfactory relief from currently  available  therapies.
In fact, it is estimated that  absenteeism and medical  expenses  resulting from
migraine  total  $50  billion  annually.  Current  oral drug  therapies  for the
treatment  of  migraine  headaches  have slow  onset of action,  resulting  in a
medical need that may be better satisfied through pulmonary delivery.

            Status:   In  December   1999,   the   Company   completed  a  gamma
scintigraphy/pharmacokinetic trial comparing the ADDS to a conventional MDI. The
trial  showed  successful  delivery  of the  drug to all  regions  of lung  with
significantly  reduced mouth and throat  deposition,  and rapid drug absorption.
The Company is  currently  in  discussions  with a number of  companies  for the
outlicensing and development of this product.

                                       9
<PAGE>

            ADDS Respiratory Therapies.  The ADDS has broad applicability across
respiratory  disease therapies since it utilizes basic MDI delivery methods that
are the  most  popular  forms of  respiratory  delivery.  The ADDS  technology's
ability to vastly  minimize oral  deposition  makes it especially  applicable to
steroids and steroid  combinations with which fungal overgrowth side effects are
common.  In addition,  U.S.  patients and  physicians  have  indicated that they
prefer metered dose aerosol delivery.  The ADDS technology is positioned to take
advantage of this  built-in  market  preference  for MDIs with its potential for
superior performance, reduced adverse reactions and cost-effectiveness.  Inhaled
steroids  are the  fastest  growing  segment of the  respiratory  market and the
largest in Europe.  The  features of the ADDS  directly  minimize the aspects of
inhaled  steroids that remain a concern to patients and  physicians.  The market
for inhaled steroids on a worldwide basis is approximately $2.0 billion.

            As with MSI, there remains  opportunities  for developing ADDS for a
range of  therapies  either  directly  by the Company or in  collaboration  with
strategic  partners.  Unlike the MSI,  it is  potentially  advantageous  for the
Company  to  partner  on a  product-by-product  basis,  concentrating  on  prime
partners to launch the system commercially and to aid in subsequent  development
with products  developed  specifically  for exclusive  commercialization  by the
Company.

Inhaled Steroid Products

            In October 1999,  the Company and Elan formed a new joint venture to
develop three inhaled  steroid  products to treat certain  respiratory  diseases
that will utilize Elan's  Nanocrystal(TM)  dispersion technology and Sheffield's
pulmonary delivery systems.  Because of the difficulties in formulating steroids
for delivery through a solution-based inhalation system, no steroid products are
currently  available  in the United  States for  delivery  through a  nebulizer.
Elan's  Nanocrystal(TM)  technology  will  allow  for  such a  formulation.  The
estimated  worldwide  market for  inhaled  steroids is $2 billion  annually  and
growing  at  20%  per  year.  The  three  products  being  developed  are  1)  a
propellant-based  steroid formulation for inhalation in the ADDS; 2) a unit-dose
packaged steroid  formulation for inhalation  delivery in a standard  commercial
tabletop device; and 3) a steroid  formulation for inhalation delivery using the
MSI,  subject to further  agreement with Zambon.  Formulation  work is currently
underway in all three of these inhaled steroid products.

Ultrasonic Pulmonary Drug Absorption System

            The  UPDAS(TM)  is a  novel  ultrasonic  pulmonary  delivery  system
designed by Elan as a disposable unit dose nebulizer system.  UPDAS was designed
primarily  for the delivery of proteins,  peptides and other large  molecules to
the lungs for absorption into the bloodstream.  Elan's preliminary research with
UPDAS  demonstrated  unique atomization that may prevent denaturing of bioactive
molecules  and particle size  distribution  that meets the targets for local and
systemic delivery.  The Company intends to initiate in-vitro  validation testing
of UPDAS to confirm  Elan's  preliminary  results and to develop data to support
patent  filings.  A plan for  additional  development  of UPDAS will be prepared
based upon the results of this confirmational testing.

Absorption Enhancing Technology

            As part of the same transaction in which the Company acquired UPDAS,
the Company also  acquired a worldwide  exclusive  license to Elan's  Absorption
Enhancing  Technology  ("Enhancing  Technology").  While not a  delivery  system
itself,  the Enhancing  Technology is a therapeutic  agent identified by Elan to
increase the systemic  absorption of drugs delivered to the lungs. The Enhancing
Technology  will be utilized in conjunction  with the Company's  other pulmonary
delivery systems. The Company intends to complete the in-vitro testing necessary
to substantiate  the unique  absorption  properties of the Enhancing  Technology
that have been  identified  by Elan.  After this work is completed and analyzed,
the Company plans to determine the  appropriate  patent  strategy to take and to
begin development of the Enhancing  Technology for use in the Company's delivery
systems.

Early Stage Research Projects

            As  part  of the  Company's  focus  on  later  stage  pharmaceutical
opportunities,  the Company is seeking to  out-license  its  portfolio  of early
stage medical  research  projects to companies that are committed to early stage
biotechnology  opportunities.  The Company has  determined  that its early stage
technologies  do  not  fit  the  Company's  pulmonary  drug  delivery  strategy.
Consequently,   the  Company  plans  to  out-license  these  technologies  while
maintaining  an interest in the  technologies'  promise  without  incurring  the
development costs associated with early stage research and development.

            Because the Company is no longer funding these  projects,  it may be
at risk of losing its rights to certain of these  technologies.  There can be no
assurance  that the Company will be able to sell or license its rights to any of
its remaining early stage research projects or realize any milestone payments or
other revenue from those early stage research projects that have been previously
divested.

                                       10
<PAGE>

          Anti-Proliferative Technologies

            The Company holds rights to certain compounds and their uses for the
treatment of conditions  characterized by unregulated cell proliferation or cell
growth and sickle cell anemia.  The Company's  intellectual  property  portfolio
consists of  clotrimazole  ("CLT"),  its metabolites and a number of proprietary
new  chemical  entities  co-owned by the Company  termed the  Trifens(TM).  Such
compounds have demonstrated  promise in therapeutic  applications for treating a
number of conditions  characterized by unregulated cell  proliferation,  such as
cancer  (including  multiple drug  resistance  cases) and certain  proliferative
dermatological conditions, as well as sickle cell anemia and secretory diarrhea.

            The  Company   entered  into  a  license   arrangement   with  Lorus
Therapeutics,   Inc.  (formerly  Imutec  Pharma  Inc.)  in  November  1997.  The
arrangement  licenses  rights  to a series of  compounds  for the  treatment  of
cancer, Kaposi's sarcoma and actinic keratosis to a newly formed company, NuChem
Pharmaceuticals,  Inc.  ("NuChem")  for which Lorus  Therapeutics  will  provide
funding and  management  of the  development  program.  The Company  holds a 20%
equity interest in NuChem.

            Work  on  the  lead  compounds  by  NuChem  has  progressed  in  the
pre-clinical  phase.  In 1999,  NuChem  announced that the U.S.  National Cancer
Institute has agreed to undertake  additional in vitro  screening  after initial
evaluation of the  compounds.  The initial IND for the lead compounds is planned
to be filed in early 2000.

            The  Company is  actively  seeking to partner or license  the use of
clotrimazole   and  the  Trifens  in  the  fields  of  sickle  cell  anemia  and
gastrointestinal disorders.

            RBC-CD4 Electroinsertion Technology

            The Company is the  worldwide  licensee of certain  technology  (the
"RBC-CD4  Electroinsertion  Technology")  relating  to the  electroinsertion  of
full-length CD4 protein into red blood cells for use as a potential  therapeutic
in the  treatment  of HIV that leads to AIDS.  The  Company has signed an option
agreement  with a private  investment  group  that had a prior  interest  in the
RBC-CD4  Electroinsertion  Technology  to  sell  the  Company's  rights  to this
HIV/AIDS technology.  As consideration for the option, the third party will fund
an additional study related to the RBC-CD4 Electroinsertion  Technology. If this
option is exercised,  the Company will retain a one-third interest in all future
commercial and sublicensing results.

            Liposome-CD4 Technology

            The Company is the  worldwide  licensee of certain  technology  (the
"Liposome-CD4  Technology")  relating to the  incorporation of CD4 antigens into
liposome  bilayers  and  their  use  as a  potential  therapeutic  agent  in the
treatment of HIV/AIDS.  The Company entered into a sublicense  agreement in July
1996  with  SEQUUS  Pharmaceuticals,  Inc.  for the  continued  development  and
commercialization of the Liposome-CD4 Technology.

            HIV/AIDS Vaccine

            The  Company  holds an  exclusive  worldwide  license to a potential
HIV/AIDS  vaccine and diagnostic test under  development at the French Institute
of Health and  Medical  Research.  The  Company  is  seeking a partner  for this
technology.

            UGIF Technology - Prostate Cancer

            The  Company  holds  an  exclusive  worldwide  license  to a  growth
regulatory  factor,  termed  Urogenital Sinus Derived Growth  Inhibitory  Factor
("UGIF"),   which  could  serve  as  a  potential   prostate   cancer   therapy.
Identification  of UGIF as a growth inhibitory factor for certain prostate cells
was based upon  laboratory  studies  conducted at Baylor  Medical  College.  The
Company is seeking a partner for this technology.

Government Regulation

            The Company's research and development  activities and,  ultimately,
the  production  and  marketing  of  its  licensed  products,   are  subject  to
comprehensive  regulation  by numerous  governmental  authorities  in the United
States  and other  countries.  Among the  applicable  regulations  in the United
States, pharmaceutical products are subject to the Federal Food, Drug & Cosmetic
Act, the Public Health Services Act, other federal statutes and regulations, and
certain state and local  regulations.  These regulations and statutes govern the
development,  testing,  formulation,   manufacture,  labeling,  storage,  record
keeping,  quality  control,  advertising,   promotion,  sale,  distribution  and
approval of such  pharmaceutical  products.  Failure to comply  with  applicable
requirements  can  result in fines,  recall or  seizure  of  products,  total or
partial suspension of production, refusal by the government to approve marketing
of the product and criminal prosecution.



                                       11
<PAGE>

            A new drug may not be legally  marketed  for  commercial  use in the
United States without FDA approval. In addition,  upon approval, a drug may only
be marketed for the  indications,  in the  formulations and at the dosage levels
approved by the FDA.  The FDA also has the  authority  to  withdraw  approval of
drugs in accordance  with  applicable laws and  regulations.  Analogous  foreign
regulators impose similar approval requirements relating to commercial marketing
of a drug in their respective  countries and may impose similar restrictions and
limitations after approval.

            In order to obtain FDA  approval of a new  product,  the Company and
its  strategic  partners  must  submit  proof of  safety,  efficacy,  purity and
stability,  and the Company must  demonstrate  validation  of its  manufacturing
process.  The testing and  application  process is expensive and time consuming,
often taking several years to complete.  There is no assurance that the FDA will
act  favorably  or quickly  in  reviewing  such  applications.  With  respect to
patented  products,  processes or technologies,  delays imposed or caused by the
governmental  approval process may materially reduce the period during which the
Company will have the exclusive  right to exploit  them.  Such delays could also
affect the commercial advantages derived from proprietary processes.  As part of
the  approval  process,  the FDA  reviews the Drug Master File (the "DMF") for a
description  of product  chemistry  and  characteristics,  detailed  operational
procedures  for  product  production,   quality  control,  process  and  methods
validation,  and quality assurance.  As process development continues to mature,
updates and modifications of the DMF are submitted.

            The FDA  approval  process  for a  pharmaceutical  product  includes
review of (i) chemistry and formulations, (ii) preclinical laboratory and animal
studies,   (iii)  initial  IND  clinical  studies  to  define  safety  and  dose
parameters,  (iv)  well-controlled  IND clinical  trials to demonstrate  product
efficacy  and safety,  followed  by  submission  and FDA  approval of a New Drug
Application (the "NDA").  Preclinical  studies involve laboratory  evaluation of
the product and animal  studies to assess  activity  and safety of the  product.
Products must be formulated in accordance with United States Good  Manufacturing
Procedures  ("GMP")  requirements  and  preclinical  tests must be  conducted by
laboratories that comply with FDA regulations  governing the testing of drugs in
animals.  The results of the preclinical  tests are submitted to the FDA as part
of the IND application and are reviewed by the FDA prior to granting the sponsor
permission to conduct clinical studies in human subjects. Unless the FDA objects
to an IND  application,  the application will become effective 30 days following
its receipt by the FDA. There can be no certainty that submission of an IND will
result in FDA authorization to commence clinical studies.

            Human clinical  trials are typically  conducted in three  sequential
phases with some amount of overlap  allowed.  Phase I trials normally consist of
testing  the product in a small  number of normal  volunteers  for  establishing
safety and pharmacokinetics using single and multiple dosing regiments. In Phase
II, the continued  safety and initial efficacy of the product are evaluated in a
limited  patient  population,  and  appropriate  dosage  amounts  and  treatment
intervals are  determined.  Phase III trials  typically  involve more definitive
testing of the appropriate dose for safety and clinical  efficacy in an expanded
patient  population at multiple  clinical testing  centers.  A clinical plan, or
"protocol," accompanied by the approval of the institution  participating in the
trials,  must be submitted  to the FDA prior to  commencement  of each  clinical
trial phase.  Each  clinical  study must be  conducted  under the auspices of an
Institutional  Review  Board  (the  "IRB")  at the  institution  performing  the
clinical  study.  The IRB is charged with  protecting  the safety of patients in
trials and may require changes in a protocol, and there can be no assurance that
an IRB will permit any given study to be  initiated or  completed.  In addition,
the FDA may order the temporary or permanent  discontinuation of clinical trials
at any time. The Company must rely on independent investigators and institutions
to conduct these clinical studies.

            All  the  results  of the  preclinical  and  clinical  studies  on a
pharmaceutical  product  are  submitted  to the  FDA in the  form  of an NDA for
approval to commence commercial  distribution.  The information contained in the
DMF is also incorporated into the NDA.  Submission of an NDA does not assure FDA
approval for marketing.  The application review process often requires 12 months
to complete.  However,  the process may take substantially longer if the FDA has
questions  or concerns  about a product or studies  regarding  the  product.  In
general,   the  FDA  requires  two  adequate  and  controlled  clinical  studies
demonstrating efficacy with sufficient levels of statistical assurance. However,
additional  support  may be  required.  The  FDA  also  may  request  additional
information relating to safety or efficacy,  such as long-term toxicity studies.
In  responding  to an  NDA,  the  FDA  may  grant  marketing  approval,  require
additional  testing and/or  information,  or deny the application.  Accordingly,
there can be no assurance about any specific time frame for approval, if any, of
products by the FDA or foreign regulatory  agencies.  Continued  compliance with
all  FDA  requirements  and  conditions  relative  to an  approved  application,
including   product   specifications,   manufacturing   process,   labeling  and
promotional  material,  and  record  keeping  and  reporting  requirements,   is
necessary  throughout  the life of the product.  In addition,  failure to comply
with FDA  requirements,  the occurrence of unanticipated  adverse effects during
commercial marketing or the result of future studies, could lead to the need for
product recall or other FDA-initiated actions that could delay further marketing
until the products or processes are brought into compliance.




                                       12
<PAGE>

            The  facilities  of  each   pharmaceutical   manufacturer   must  be
registered  with  and  approved  by the FDA as  compliant  with  GMP.  Continued
registration  requires compliance with standards for GMP. In complying with GMP,
manufacturers  must  continue to expend  time,  money and effort in  production,
record keeping and quality control to ensure technical compliance.  In addition,
manufacturers  must comply with the United States Department of Health and Human
Services  and  similar  state and local  regulatory  authorities  if they handle
controlled  substances,  and they  must be  registered  with the  United  States
Environmental   Protection   Agency  and  similar  state  and  local  regulatory
authorities if they generate toxic or dangerous waste streams.  Other regulatory
agencies such as the Occupational Safety and Health  Administration also monitor
a manufacturing  facility for compliance.  Each of these organizations  conducts
periodic  establishment  inspections to confirm  continued  compliance  with its
regulations.  Failure to comply with any of these  regulations could mean fines,
interruption of production and even criminal prosecution.

            For  foreign  markets,  a  pharmaceutical   company  is  subject  to
regulatory   requirements,   review  procedures  and  product  approvals  which,
generally,  may be as extensive,  if not more extensive,  as those in the United
States.   Although  the  technical  descriptions  of  the  clinical  trials  are
different,  the trials  themselves are often  substantially the same as those in
the United  States.  Approval of a product by regulatory  authorities of foreign
countries must be obtained prior to commencing  commercial  product marketing in
those countries,  regardless of whether FDA approval has been obtained. The time
and cost required to obtain market approvals in foreign  countries may be longer
or shorter than required for FDA approval and may be subject to delay. There can
be no assurance  that  regulatory  authorities  of foreign  countries will grant
approval. The Company has no experience in manufacturing or marketing in foreign
countries nor in matters such as currency regulations, import-export controls or
other trade laws.

Patents and Trademarks

            MSI System Patents and Trademark

            Under its agreement  with Siemens AG for the  technology  underlying
the MSI system, the Company is responsible for jointly financing and prosecuting
the U.S. patent applications for the benefit of the owners and licensors of this
technology. To date, three U.S. patents have issued, one U.S. patent application
is  pending,  two  U.S.   provisional   applications  and  five  foreign  patent
applications  are  pending.  They  provide  protection  through 2017 for the MSI
device, the dosator cartridges and their combinations.

            Aerosol Drug Delivery System Patents

            As of the  December  31, 1999,  two U.S.  patents  have issued,  one
notice  of  allowance  has  been  received,   and  two  U.S.  and  four  foreign
applications  are pending.  The issued and allowed  patents  cover the ADDS flow
control and triggering mechanism through 2018.

            Early Stage Research Technology Patents

            Under its license  agreements for its early stage research projects,
the  Company  has  been   responsible  for  financing  and  prosecuting   patent
applications for the benefit of the owners and licensors of these  technologies.
While the Company  holds,  or has held,  several  U.S.  and foreign  patents and
patent applications for these early stage  technologies,  the Company expects to
assign these  patents and  applications  to future  acquirors,  if any, of these
technologies.  Because the Company does not intend to continue to pay for future
patent fees on these early stage  technologies,  in the event that no  acquirors
are found for these technologies, the Company expects that it will allow some or
all of these  patents  and  patent  applications  to lapse or the  rights may be
returned to the licensors.

Competition

            The Company competes with  approximately 25 other companies involved
in developing  and selling  respiratory  products for the U.S.  market.  Most of
these  companies  possess  financial and marketing  resources and  developmental
capabilities  substantially  greater than the  Company.  Some of the products in
development  by  other  companies  may be  demonstrated  to be  superior  to the
Company's current or future products.  Furthermore,  the pharmaceutical industry
is  characterized  by rapid  technological  change and  competitors may complete
development  and  reach the  market  place  prior to the  Company.  The  Company
believes that competition in the respiratory category will be based upon several
factors,  including product efficacy,  safety,  reliability,  availability,  and
price, among others.




                                       13
<PAGE>


Subsidiaries

            On January 10, 1996, Ion  Pharmaceuticals,  Inc. ("Ion"), was formed
as a wholly  owned  subsidiary  of the Company.  At that time,  Ion acquired the
Company's rights to certain early stage biomedical technologies.

            On April 17, 1997, CP  Pharmaceuticals,  Inc.  ("CP") was formed for
the purpose of acquiring Camelot  Pharmacal,  LLC ("Camelot"),  a privately held
pharmaceutical  development  company.  The Company acquired Camelot on April 25,
1997.

            As part of its strategic  alliance with Elan, on June 30, 1998,  the
Company formed SPD as a wholly owned subsidiary.  At that time, SPD acquired the
Company's  rights  to the  systemic  applications  of the MSI and the  ADDS.  In
addition,  SPD  acquired  Elan's  rights  to the  UPDAS(TM)  and  the  Enhancing
Technology.  SPD is responsible for the development of systemic  applications in
both the MSI and ADDS.

            In addition to the above  alliance  with Elan,  on October 18, 1999,
the  Company  and Elan  formed a new joint  venture,  RSD,  to  develop  certain
respiratory  steroid products.  The Company and Elan made equity  investments in
RSD  representing  an initial  80.1% and 19.9%,  respectively,  ownership in the
joint  venture.  The joint venture is  responsible  for the  development  of the
inhaled steroid products.

Employees

            As of March 20, 2000, the Company employed 15 persons,  five of whom
are executive officers.


Certain Risk Factors that May Affect  Future  Results,  Financial  Condition and
Market Price of Securities

Significant Liquidity Restraints; Need for Additional Financing;  Uncertainty of
Obtaining Additional Funding

            The  Company's  cash  available  for  funding its  operations  as of
December  31,  1999 was $3.9  million.  As of such date,  the  Company had trade
payables of $0.8 million and current  research  obligations of $0.4 million.  In
addition, committed and/or anticipated funding of research and development after
December 31, 1999 is  estimated at  approximately  $4.1  million,  of which $4.0
million has been  committed  to be funded by Elan  through  the  issuance of the
Company's Series E Cumulative  Convertible Preferred Stock. The Company needs to
raise substantial additional capital to fund its operations. The Company intends
to  seek  such   additional   funding   through   collaborative   or  partnering
arrangements,  the  extension  of existing  arrangements,  or through  public or
private equity or debt  financings.  There can be no assurance  that  additional
financing will be available on acceptable  terms or at all. If additional  funds
are raised by issuing equity  securities,  further  dilution to shareholders may
result.  If  adequate  funds are not  available,  the Company may be required to
delay,  reduce  the  scope  of,  or  eliminate  one or more of its  research  or
development  programs or obtain funds through  arrangements  with  collaborative
partners or others that may require the Company to relinquish  rights to certain
of its  technologies,  product  candidates  or products  that the Company  would
otherwise seek to develop or commercialize.  If adequate funds are not available
from operations or additional  sources of funding,  the Company's  business will
suffer a material adverse effect.

            The Company's  operations to date have consumed  substantial amounts
of cash.  The negative cash flow from  operations is expected to continue in the
foreseeable  future. The development of the Company's  technologies and proposed
products will require a commitment of  substantial  funds to conduct  costly and
time-consuming research, preclinical and clinical testing, and to bring any such
products to market.  The Company's  future capital  requirements  will depend on
many factors,  including  continued  progress in  out-licensing  the early stage
technologies and developing the Company's pulmonary delivery  technologies,  the
ability of the Company to establish and maintain collaborative arrangements with
others  and to comply  with the terms  thereof,  receipt  of  payments  due from
partners under research and development  agreements,  progress with  preclinical
and  clinical  trials,  the time and  costs  involved  in  obtaining  regulatory
approvals, the cost involved in preparing, filing, prosecuting,  maintaining and
enforcing patent claims,  the need to acquire licenses to new technology and the
status of competitive products. The inability of the Company to raise additional
funds at the pace dictated by these and other factors, either from operations or
additional  sources of funding,  will result in a material adverse effect on the
Company's business.


                                       14
<PAGE>

No Commercialization of Products to Date

            The Company has not yet begun to generate  revenues from the sale of
products.   The   Company's   products  will  require   significant   additional
development,  clinical  testing and investment prior to  commercialization.  The
Company does not expect  regulatory  approval for commercial sales of any of its
products in the immediate  future.  There can be no assurance that such products
will be  successfully  developed,  proven to be safe and efficacious in clinical
trials, able to meet applicable  regulatory  standards,  able to obtain required
regulatory  approvals,  or produced in commercial quantities at reasonable costs
or be successfully commercialized and marketed.

Royalty Payment Obligations

            The owners and licensors of the  technology  rights  acquired by the
Company  are  entitled  to receive a certain  percentage  of all  royalties  and
payments in lieu of royalties received by the Company from commercialization, if
any, of products in respect of which the Company holds licenses. Accordingly, in
addition to its substantial investment in product development,  the Company will
be required to make  substantial  payments to others in connection with revenues
derived from commercialization of products, if any, developed under licenses the
Company holds. Consequently, the Company will not receive the full amount of any
revenues that may be derived from  commercialization of products to fund ongoing
operations.

Potential Loss of Rights Upon Default

            Under the terms of existing agreements,  the Company is obligated to
make certain  payments to its licensors.  In the event that the Company defaults
on the  payment  of an  installment  under  the terms of an  existing  licensing
agreement,  its rights  thereunder  could be forfeited.  As a  consequence,  the
Company could lose all rights under a license  agreement to the related licensed
technology,  notwithstanding  the total  investment made through the date of the
default.  There can be no assurance that unforeseen obligations or contingencies
will not deplete the Company's financial resources and, accordingly,  sufficient
resources may not be available to fulfill the Company's commitments.

Rapid Technological Change; Competition

            The  medical  field is  subject  to rapid  technological  change and
innovation.  Pharmaceutical and biomedical  research and product development are
rapidly  evolving  fields in which  developments  are  expected to continue at a
rapid pace.  Reports of progress and potential  breakthroughs are occurring with
increasing  frequency.  There can be no  assurance  that the Company will have a
competitive  advantage in its fields of technology or in any of the other fields
in which the Company may concentrate its efforts.

            The  Company's  success  will depend upon its ability to develop and
maintain   a   competitive   position   in   the   research,   development   and
commercialization   of  products  and   technologies  in  its  areas  of  focus.
Competition from  pharmaceutical,  chemical,  biomedical and medical  companies,
universities,  research  and other  institutions  is intense  and is expected to
increase.  All, or substantially  all, of these  competitors have  substantially
greater research and development  capabilities,  experience,  and manufacturing,
marketing,   financial  and  managerial  resources.   Further,  acquisitions  of
competing  companies by large  pharmaceutical  or other  companies could enhance
such competitors' financial,  marketing and other capabilities.  There can be no
assurance that developments by others will not render the Company's  products or
technologies  obsolete or not  commercially  viable or that the Company  will be
able to keep pace with technological developments.

Government Regulation

            The Company's ongoing research and development  projects are subject
to rigorous FDA  approval  procedures.  The  preclinical  and  clinical  testing
requirements to demonstrate safety and efficacy in each clinical indication (the
specific condition intended to be treated) and regulatory  approval processes of
the FDA can  take a  number  of  years  and  will  require  the  expenditure  of
substantial  resources by the Company.  Delays in obtaining  FDA approval  would
adversely  affect the  marketing of products to which the Company has rights and
the Company's ability to receive product revenues or royalties.  Moreover,  even
if FDA  approval is  obtained,  a marketed  product,  its  manufacturer  and its
manufacturing   facilities   are  subject  to  continual   review  and  periodic
inspections  by the FDA, and a later  discovery of previously  unknown  problems
with a product,  manufacturer  or facility  may result in  restrictions  on such
product  or  manufacturer.  Failure  to comply  with the  applicable  regulatory
requirements can, among other things, result in fines, suspensions of regulatory
approvals,  product recalls,  operating  restrictions and criminal  prosecution.
Additional government regulation may be established which could prevent or delay
regulatory approval of the Company's products.  Sales of pharmaceutical products
outside the United States are subject to foreign  regulatory  requirements  that
vary widely from country to country.  Even if FDA  approval  has been  obtained,
approval of a product by comparable regulatory  authorities of foreign countries
must be obtained  prior to the  commencement  of marketing  the product in those
countries.  The time




                                       15
<PAGE>

required to obtain such approval may be longer or shorter than that required for
FDA approval.  The Company has no experience  in  manufacturing  or marketing in
foreign  countries  nor in matters such as currency  regulations,  import-export
controls or other  trade laws.  To date,  the  Company  has not  received  final
regulatory  approval  from the FDA or any other  comparable  foreign  regulatory
authority in respect of any product or technology.

Risks Incident to Patent Applications and Rights

            The  Company's  success will depend in part on its ability to obtain
patent protection for its  technologies,  products and processes and to maintain
trade secret protection and operate without infringing the proprietary rights of
others.  The  degree of patent  protection  to be  afforded  to  pharmaceutical,
biomedical or medical  inventions is an uncertain  area of the law. There can be
no  assurance  that the Company  will  develop or receive  sublicenses  or other
rights related to proprietary  technology that are patentable,  that any patents
pending will issue, or that any issued patents will provide the Company with any
competitive advantages or will not be challenged by third parties.  Furthermore,
there can be no  assurance  that  others  will not  independently  duplicate  or
develop  similar  products or  technologies to those developed by or licensed to
the  Company.  If the Company is required  to defend  against  charges of patent
infringement  or to protect its own  proprietary  rights  against third parties,
substantial  costs will be incurred and the Company could lose rights to certain
products and technologies.

Reliance on Third Parties; No Marketing or Manufacturing Capabilities

            The  Company  does  not  currently  have its own  sales  force or an
agreement with another  pharmaceutical  company to market the Company's products
that are in development.  When  appropriate,  the Company may build or otherwise
acquire the necessary marketing capabilities to promote its products.  There can
be no assurance  that the Company will have the resources  available to build or
otherwise acquire its own marketing capabilities,  or that agreements with other
pharmaceutical  companies  can be reached to market the  Company's  products  on
terms acceptable to the Company.

            In  addition,  the Company  does not intend to  manufacture  its own
products.  While the Company  has already  entered  into two  manufacturing  and
supply  agreements  related to the MSI system and one related to the ADDS, there
can be no  assurance  that these  manufacturing  and supply  agreements  will be
adequate or that the Company will be able to enter into future manufacturing and
supply agreements on terms acceptable to the Company.

Dependence Upon Obtaining Healthcare Reimbursement

            The  Company's  ability  to  commercialize   human  therapeutic  and
diagnostic  products may indirectly  depend in part on the extent to which costs
for such products and technologies are reimbursed by private health insurance or
government  health  programs.  The uncertainty  regarding  reimbursement  may be
especially  significant in the case of newly approved products.  There can be no
assurance that reimbursement price levels will be sufficient to provide a return
to the Company on its investment in new products and technologies.

Adequacy of Product Liability Insurance

            The use of the  Company's  proposed  products and  processes  during
testing,  and after approval,  may entail inherent risks of adverse effects that
could  expose the Company to product  liability  claims and  associated  adverse
publicity. Although the Company currently maintains general liability insurance,
there can be no assurance  that the coverage  limits of the Company's  insurance
policies  will be  adequate.  The Company  currently  maintains  clinical  trial
product  liability  insurance  of $2.0  million per event for  certain  clinical
trials and intends to obtain  insurance for future  clinical  trials of products
under development.  There can be no assurance, however, that the Company will be
able to obtain or  maintain  insurance  for any  future  clinical  trials.  Such
insurance  is  expensive,  difficult  to obtain and may not be  available in the
future on acceptable  terms,  or at all. A successful  claim brought against the
Company  in excess of the  Company's  insurance  coverage  would have a material
adverse effect upon the Company and its financial condition. The Company intends
to  require  its  licensees  to obtain  adequate  product  liability  insurance.
However,  there can be no assurance  that  licensees will be able to maintain or
obtain adequate  product  liability  insurance on acceptable  terms or that such
insurance will provide adequate coverage against all potential claims.

                                       16
<PAGE>

Potentially Limited Trading Market; Possible Volatility of Stock Price.

            The Common  Stock is listed for trading on American  Stock  Exchange
(the "AMEX") under the symbol "SHM". The Company does not presently  satisfy the
listing  guidelines  of the AMEX,  including  the AMEX  guideline  that a listed
company that has sustained losses from operations  and/or net losses in three of
its  four  most  recent  fiscal  years  have  stockholders'  equity  of at least
$4,000,000. The Company has sustained net losses for its four most recent fiscal
years and, at December 31, 1999, had stockholders'  equity of $0.7 million.  The
failure to meet the AMEX  listing  guidelines  may result in the Common Stock no
longer being eligible for listing on the AMEX and trading, if any, of the Common
Stock would  thereafter  be conducted  in the  over-the-counter  market.  If the
Company's  Common  Stock  were to be  delisted  from  the  AMEX,  it may be more
difficult  for investors to dispose of, or to obtain  accurate  quotations as to
the market value of the Common Stock.

            In the event of the delisting of the Company's Common Stock from the
AMEX, the regulations of the Securities and Exchange  Commission  ("Commission")
promulgated  under the  Securities  Exchange Act of 1934, as amended  ("Exchange
Act"),  require additional  disclosure  relating to the market for penny stocks.
Commission  regulations  generally define a penny stock to be an equity security
that has a market  price of less  than  $5.00  per  share,  subject  to  certain
exceptions.  A  disclosure  schedule  explaining  the penny stock market and the
risks  associated  therewith  is required  to be  delivered  to a purchaser  and
various sales practice requirements are imposed on broker-dealers who sell penny
stocks to persons  other than  established  customers and  accredited  investors
(generally  institutions).  In  addition,  the  broker-dealer  must  provide the
customer  with  current  bid and  offer  quotations  for the  penny  stock,  the
compensation  of the  broker-dealer  and its  salesperson in the transaction and
monthly account  statements showing the market value of each penny stock held in
the  customer's  account.  If the  Company's  securities  become  subject to the
regulations  applicable to penny stocks (i.e.,  by AMEX  delisting),  the market
liquidity for the Company's  securities could be severely  affected.  In such an
event, the regulations on penny stocks could limit the ability of broker-dealers
to sell the  Company's  securities  and thus the  ability of  purchasers  of the
Company's  securities to sell their securities in the secondary  market.  In the
absence of an active trading market,  holders of the Common Stock may experience
substantial difficulty in selling their securities.

Volatility of Market Price of Securities

            The    market    price    of    securities    of    firms   in   the
biotechnology/pharmaceutical    industries   have   tended   to   be   volatile.
Announcements  of  technological  innovations by the Company or its competitors,
developments  concerning  proprietary rights and concerns about safety and other
factors  may have a  material  effect on the  Company's  business  or  financial
condition. The market price of the Common Stock may be significantly affected by
announcements  of  developments  in the medical field generally or the Company's
research  areas  specifically.  The stock market has  experienced  volatility in
market prices of companies  similar to the Company that has often been unrelated
to the operating results of such companies.  This volatility may have a material
adverse effect on the market price of the Common Stock.

Authorization of Preferred Stock

            The Company's  Certificate of Incorporation  authorizes the issuance
of "blank check" preferred stock with such designations,  rights and preferences
as may be  determined  from  time to time by the  Board  of  Directors,  without
shareholder  approval.  In the event of issuance,  such preferred stock could be
utilized, under certain circumstances, as a method of discouraging,  delaying or
preventing a change in control of the Company and preventing  shareholders  from
receiving a premium for their shares in connection with a change of control. The
Company issued Series A and Series B Cumulative Convertible Redeemable Preferred
Stock in  connection  with private  placements  in February 1997 and April 1998,
respectively.  All of the Series A  Preferred  Stock was  converted  into common
stock during 1998.  On July 31,  1998,  all of the Series B Preferred  Stock was
redeemed  for cash.  The Company  also issued  shares of its Series C Cumulative
Convertible  Preferred Stock ( Series C Preferred Stock") in connection with the
consummation  of an  agreement  with Elan in June  1998.  In  October  1999,  in
conjunction  with a licensing  agreement with Elan, the Company issued shares of
its Series D Cumulative  Convertible  Exchangeable  Preferred  Stock  ("Series D
Preferred Stock") and Series F Cumulative Convertible Preferred Stock ("Series F
Preferred Stock").  In addition,  the Company also has a commitment from Elan to
purchase  shares  of  its  Series  E  Cumulative  Convertible   Non-Exchangeable
Preferred Stock (Series E Preferred  Stock") at the Company's option (subject to
satisfaction  of  certain  conditions).  Except  for  the  previously  mentioned
purchase  commitment  for Series E Preferred  Stock,  and  additional  shares of
Series C, D and E Preferred  Stock that may be payable as dividends to Elan,  as
holder of the outstanding  Series C, D and E Preferred Stock, the Company has no
present  intention  to issue  any  additional  shares  of its  preferred  stock;
however,  there can be no assurance  that the Company will not issue  additional
shares of its preferred stock in the future.

                                       17

<PAGE>

Outstanding Options, Warrants and Convertible Securities; Dilution

            As of December  31,  1999,  the Company had  reserved  approximately
7,783,000  shares of its Common Stock for issuance upon exercise of  outstanding
options and  warrants  convertible  into shares of its Common  Stock,  including
shares of Common Stock  issuable  upon the exercise of options and warrants held
by officers and directors of the Company. In addition,  as of December 31, 1999,
the Company had $2,000,000  principal  amount of a Convertible  Promissory Note,
12,780  shares  of its  Series C  Preferred  Stock,  12,015  shares  of Series D
Preferred Stock, and 5,000 shares of Series F Preferred Stock outstanding.  Each
of the convertible securities provide for conversion into shares of Common Stock
of the  Company at a discount  to the market  price at December  31,  1999.  The
Series  C, D and F  Preferred  Stock  are  convertible  into  9,063,830  shares,
2,472,222  shares,  and 1,470,588  shares,  respectively,  of Common Stock.  The
Convertible  Promissory  Note is  convertible  into  1,142,857  shares of Common
Stock. The exercise of options and outstanding warrants,  the conversion of such
other  securities  and sales of Common Stock  issuable  thereunder  could have a
significant  dilutive  effect on the  market  price of  shares of the  Company's
Common Stock and could materially  impair the Company's ability to raise capital
through the future sale of its equity securities.


Item 2.     Properties

            The Company's  principal  executive offices are located at 425 South
Woodsmill  Road,  St.  Louis,   Missouri  63017.   These  premises   consist  of
approximately  4,521 square feet subject to a lease that expires  September  14,
2002. The monthly rent for these premises is $9,419.  The Company also maintains
a  research  facility  in Ann  Arbor,  Michigan,  and  leases a small  office in
Rochester,  New York.  The Company  maintains no other  laboratory,  research or
other  facilities,  but primarily  conducts  research and development in outside
laboratories  under  contracts with  universities  or research  facilities.  The
Company believes that its existing office  arrangements will be adequate to meet
its reasonably foreseeable future needs.

Item 3.     Legal Proceedings

There are no  material  legal  proceedings  against  the  Company  or any of its
subsidiaries.

Item 4.     Submission of Matters to a Vote of Security Holders

None.

                                       18
<PAGE>
  PART II

Item 5.     Market  For  Registrant's  Common  Equity  and  Related  Stockholder
            Matters

            The  following  table sets forth the high and low sale prices of the
Company's  Common  Stock on the  American  Stock  Exchange  (the "AMEX") for the
periods indicated.

1999:                                             High               Low
                                                  ----               ---

            Fourth Quarter...............     $  5.250            $ 2.438
            Third Quarter................        2.938              2.000
            Second Quarter...............        3.063              2.188
            First Quarter................        3.500              2.000

1998:
            Fourth Quarter...............    $   2.500            $  .938
            Third Quarter................        2.500              1.063
            Second Quarter...............        2.313               .625
            First Quarter................        1.438               .625

            The closing sale price for the Company's Common Stock on the AMEX on
March 20, 2000 was $6.00 per share. At March 20, 2000, there were  approximately
434 holders of record of the Company's Common Stock.

            The Company has never paid  dividends  on its Common  Stock and does
not intend to pay cash dividends on its Common Stock in the foreseeable  future.
The terms of the Company's Series C, D and E Preferred Stock generally  prohibit
the payment of cash dividends and other  distributions  on the Company's  Common
Stock unless full cumulative stock dividends on shares of such Series C, D and E
Preferred  Stock have been paid or declared in full.  During  1999,  the Company
issued stock dividends  totaling 866 shares of Series C Preferred Stock and cash
dividends for  fractional  shares of $2,277.  No dividends were paid or declared
during 1999 on the Company's Series D and E Preferred Stock.

            The  following  unregistered  securities  were issued by the Company
during the quarter ended December 31, 1999:

<TABLE>
<CAPTION>
                                    Number of Shares
                                       Sold/Issued/        Offering/
   Date of        Description of  Subject to Options or  Exercise Price
Sale/Issuance  Securities Issued        Warrants          per share ($)      Purchaser or Class
- -------------  -----------------        --------          -------------      ------------------

<S>               <C>                    <C>                 <C>            <C>
October 1999      Common stock           150,000             $6.00            Licensor/Investor
                    warrants                                                pursuant to financing
                                                                                arrangement

December 1999     Common stock           14,400             $3.6875         Employees pursuant to
                    options                                                  Employee Stock Option
                                                                                     Plan
</TABLE>

The  issuance of these  securities  are  claimed to be exempt from  registration
pursuant  to  Section  4(2)  of the  Securities  Act of  1933,  as  amended,  as
transactions  by an  issuer  not  involving  a public  offering.  There  were no
underwriting  discounts or commissions  paid in connection  with the issuance of
any of these securities.

                                       19
<PAGE>

Item 6.    Selected Financial Data

The  information  required  by this Item is  incorporated  by  reference  to the
Company's  Annual Report to  Stockholders  for the year ended December 31, 1999,
pertinent portions of which are attached hereto as Exhibit 13.

Item 7.    Management's Discussion and Analysis or Plan of Operation

The  information  required  by this Item is  incorporated  by  reference  to the
Company's  Annual Report to  Stockholders  for the year ended December 31, 1999,
pertinent portions of which are attached hereto as Exhibit 13.

Item 7A.   Quantitative and Qualitative Disclosure About Market Risk

The Company has no material market risk exposure.

Item 8.    Financial Statements and Supplementary Data

Quarterly financial data for 1999 and 1998 is summarized below:

<TABLE>
<CAPTION>
                                                                         Three Months Ended
                                                   Mar 31            Jun 30              Sep 30              Dec 31
                                                   ------            ------              ------              ------
<S>                                            <C>                <C>                 <C>                <C>
1999:
Total revenues                                 $    26,000        $    101,412        $   147,526        $    124,440
Operating loss                                  (1,154,642)         (1,468,668)        (1,418,452)        (16,257,730)
Net loss                                        (1,162,656)         (1,487,010)        (1,454,942)        (13,280,180)
Basic and diluted net loss per share                  (.04)               (.05)              (.05)               (.49)

1998:
Total revenues                                 $      --          $    350,000        $      --          $       --
Operating loss                                  (2,221,531)        (13,219,472)        (1,999,198)           (929,170)
Net loss                                        (2,263,048)        (13,303,121)        (2,142,410)           (851,882)
Basic and diluted net loss per share                  (.17)               (.67)              (.08)               (.03)
</TABLE>

The remaining  information required by this Item is incorporated by reference to
the Company's  Annual  Report to  Stockholders  for the year ended  December 31,
1999, pertinent portions of which are attached hereto as Exhibit 13.

Item 9.    Changes in and  Disagreements  With  Accountants  on Accounting  and
           Financial Disclosure

None.

Item 10.   Directors,   Executive  Officers,  Promoters  and  Control  Persons;
           Compliance with Section 16(a) of the Exchange Act

The  information  required  by this Item is  incorporated  by  reference  to the
Company's  definitive  proxy  statement to be filed no later than April 5, 2000,
pursuant  to  Regulation  14A of the  General  Rules and  Regulations  under the
Securities Exchange Act of 1934.

Item 11.   Executive Compensation

The  information  required  by this Item is  incorporated  by  reference  to the
Company's  definitive  proxy  statement to be filed no later than April 5, 2000,
pursuant  to  Regulation  14A of the  General  Rules and  Regulations  under the
Securities Exchange Act of 1934.

Item 12.   Security Ownership of Certain Beneficial Owners and Management

The  information  required  by this Item is  incorporated  by  reference  to the
Company's  definitive  proxy  statement to be filed no later than April 5, 2000,
pursuant  to  Regulation  14A of the  General  Rules and  Regulations  under the
Securities Exchange Act of 1934.

                                       20
<PAGE>

Item 13.   Certain Relationships and Related Transactions

The  information  required  by this Item is  incorporated  by  reference  to the
Company's  definitive  proxy  statement to be filed no later than April 5, 2000,
pursuant  to  Regulation  14A of the  General  Rules and  Regulations  under the
Securities Exchange Act of 1934.

                                       21
<PAGE>


Item 14.   Exhibits, Financial Statement Schedules and Reports on Form 8-K

        (a)(1)  Financial Statements

                The following Financial Statements are included:
                Report of Independent Auditors
                Consolidated Balance Sheets as of
                    December 31, 1999 and 1998
                Consolidated  Statements of  Operations  for
                the years ended December 31, 1999,  1998 and
                1997 and for the  period  October  17,  1986
                (inception) to December, 31 1999
                Consolidated   Statements  of  Stockholders'
                   Equity (net capital  deficiency)  for the
                   period from October 17, 1986  (inception)
                   to December 31, 1999
                Consolidated  Statements  of Cash  Flows for
                    the years ended December 31, 1999,  1998
                    and 1997 and for the period from October
                    17, 1986  (inception)  to  December  31,
                    1999
                Notes to Financial Statements

        (a)(2)  Financial Statement Schedules

                All financial  statement  schedules are omitted because they are
not applicable, or not required, or because the required information is included
in the financial statements or notes thereto.

        (a)(3)  Exhibits:


NO.                                                                    REFERENCE

3.1          Certificate of Incorporation of the Company, as amended     (10)

3.2          By-Laws of the Company                                       (4)

4.1          Form of Common Stock Certificate                             (2)

4.2          Certificate   of   Designation   defining   the   powers,    (7)
             designations,   rights,   preferences,   limitations  and
             restrictions   applicable  to  the  Company's   Series  A
             Cumulative Convertible Redeemable Preferred Stock

4.3          Certificate   of   Designations   defining   the  powers,   (11)
             designations,   rights,   preferences,   limitations  and
             restrictions   applicable  to  the  Company's   Series  B
             Cumulative Convertible Redeemable Preferred Stock

4.4          Certificate   of   Designations   defining   the  powers,   (10)
             designations,   rights,   preferences,   limitations  and
             restrictions   applicable  to  the  Company's   Series  C
             Cumulative Convertible Redeemable Preferred Stock

4.5          Certificate   of   Designations   defining   the  powers,   (16)
             designations,   rights,   preferences,   limitations  and
             restrictions   applicable  to  the  Company's   Series  D
             Cumulative Convertible Exchangeable Preferred Stock.

                                  22
<PAGE>

NO.                                                                    REFERENCE

4.6          Certificate   of   Designations   defining   the  powers,    (16)
             designations,   rights,   preferences,   limitations  and
             restrictions   applicable  to  the  Company's   Series  E
             Convertible Non-Exchangeable Preferred Stock.

4.7          Certificate   of   Designations   defining   the  powers,    (16)
             designations,   rights,   preferences,   limitations  and
             restrictions   applicable  to  the  Company's   Series  F
             Convertible Non-Exchangeable Preferred Stock.

10.6         Employment Agreement dated as of June 6, 1996 between the     (3)
             Company and Thomas M. Fitzgerald

10.6.5       Employment  Agreement  dated  as  of  November  16,  1998    (15)
             between the Company and Scott Hoffmann

10.6.6       Employment  Agreement  dated  as  of  November  17,  1997    (14)
             between the Company and Judy Roeske-Bullock

10.7         Agreement  of  Sublease  dated as of  November  17,  1995     (2)
             between  the  Company  and  Brumbaugh  Graves  Donohue  &
             Raymond relating to 30 Rockefeller Plaza, Suite 4515, New
             York, New York

10.8         1993 Stock Option Plan, as amended                           (15)

10.9         1993 Restricted Stock Plan, as amended                        (2)

10.10        1996 Directors Stock Option Plan                              (7)

10.11        Agreement  and Plan of Merger among the Company,  Camelot     (6)
             Pharmacal,  L.L.C., David A. Byron, Loren G. Peterson and
             Carl Siekmann dated April 25, 1997

10.12        Employment  Agreement  dated as of April 25, 1997 between     (6)
             the Company and David A. Byron

10.13        Employment  Agreement  dated as of April 25, 1997 between     (6)
             the Company and Loren G. Peterson

10.14        Employment  Agreement  dated as of April 25, 1997 between     (6)
             the Company and Carl Siekmann

10.15        Form  of  the  Company's  6%   Convertible   Subordinated     (8)
             Debentures due September 22, 2000.

10.16        Lease dated  August 18, 1997  between  Corporate  Center,     (5)
             L.L.C.  and the  Company  relating to the lease of office
             space in St. Louis, Missouri.

10.17        Assignment and License  Agreement dated as of December 3,     (9)
             1997   between    1266417   Ontario   Limited   and   Ion
             Pharmaceuticals,  Inc.  (portions  of this  exhibit  were
             omitted  and were filed  separately  with the  Securities
             Exchange Commission pursuant to the Company's application
             requesting confidential treatment in accordance with Rule
             24b-2 as promulgated under the Securities Exchange Act of
             1934, as amended).

                                  23
<PAGE>
NO.                                                                    REFERENCE

10.18        Sub-License  Agreement  dated  as  of  December  3,  1997     (9)
             between 1266417 Ontario Limited and Ion  Pharmaceuticals,
             Inc.  (portions  of this  exhibit  were  omitted and were
             filed separately with the Securities  Exchange Commission
             pursuant   to  the   Company's   application   requesting
             confidential  treatment in accordance  with Rule 24b-2 as
             promulgated under the Securities Exchange Act of 1934, as
             amended).

10.19        Form of  Sublicense  and  Development  Agreement  between    (12)
             Sheffield    Pharmaceuticals,    Inc.    and    Inpharzam
             International,   S.A.  (portions  of  this  exhibit  were
             omitted and were filed separately with the Securities and
             Exchange Commission pursuant to the Company's application
             requesting confidential treatment in accordance with Rule
             24b-2 as promulgated under the Securities Exchange Act of
             1934, as amended).

10.20        Securities Purchase Agreement, dated as of June 30, 1998,    (13)
             by and between Sheffield  pharmaceuticals,  Inc. and Elan
             International   Services,   Ltd.,   which   includes  the
             Certificate  of  Designations  of  Series  C  Convertible
             Preferred  Stock as  Exhibit  B. The  Company  agreed  to
             furnish the  disclosure  schedules  as well as Exhibits A
             and C,  which  were  omitted  from  this  filing,  to the
             Commission  upon  request  (portions of this exhibit were
             omitted and were filed separately with the Securities and
             Exchange Commission pursuant to the Company's application
             requesting confidential treatment in accordance with Rule
             24b-2 as promulgated under the Securities Exchange Act of
             1934, as amended).

10.21        Systemic Pulmonary  Delivery,  Ltd. Joint Development and    (13)
             Operating  Agreement  dated  as of June  30,  1998  among
             Systemic    Pulmonary    Delivery,     Ltd.,    Sheffield
             Pharmaceuticals,  Inc. and Elan  International  Services,
             Ltd.  (portions  of this  exhibit  were  omitted and were
             filed   separately   with  the  Securities  and  Exchange
             Commission   pursuant   to  the   Company's   application
             requesting confidential treatment in accordance with Rule
             24b-2 as promulgated under the Securities Exchange Act of
             1934, as amended).

10.22        License  and  Development  Agreement  dated June 30, 1998    (13)
             between  Sheffield  Pharmaceuticals,  Inc.  and  Systemic
             Pulmonary  Delivery,   Ltd.  and  Elan  Corporation  plc.
             (portions  of this  exhibit  were  omitted and were filed
             separately  with the Securities  and Exchange  Commission
             pursuant   to  the   Company's   application   requesting
             confidential  treatment in accordance  with Rule 24b-2 as
             promulgated under the Securities Exchange Act of 1934, as
             amended).

10.23        License  and  Development  Agreement  dated June 30, 1998    (13)
             between Systemic Pulmonary  Delivery,  Ltd. and Sheffield
             Pharmaceuticals,   Inc.   and  Elan   Corporation,   plc.
             (portions  of this  exhibit  were  omitted and were filed
             separately  with the Securities  and Exchange  Commission
             pursuant to the  Company's  application  requesting  Rule
             24b-2 as promulgated under the Securities Exchange Act of
             1934, as amended).


                                  24
<PAGE>
NO.                                                                    REFERENCE

10.24        License  and  Development  Agreement  dated June 30, 1998    (13)
             between  Elan  Corporation,  plc and  Systemic  Pulmonary
             Delivery,  Ltd.  and  Sheffield   Pharmaceuticals,   Inc.
             (portions  of this  exhibit  were  omitted and were filed
             separately  with the Securities  and Exchange  Commission
             pursuant   to  the   Company's   application   requesting
             confidential  treatment in accordance  with Rule 24b-2 as
             promulgated under the Securities Exchange Act of 1934, as
             amended).

10.25        Securities  Purchase  Agreement,  dated as of October 18,    (16)
             1999,  by and between the Company and Elan  (portions  of
             this exhibit were omitted and were filed  separately with
             the  Securities and Exchange  Commission  pursuant to the
             Company's application  requesting  confidential treatment
             in accordance  with Rule 24b-2 as  promulgated  under the
             Securities Exchange Act of 1934, as amended).

10.26        Subscription,  Joint Development and Operating  Agreement    (16)
             dated as of October  18,  1999 by and among  Elan  Pharma
             International  Limited,  Elan,  the  Company  and  Newco.
             (portions  of this  exhibit  were  omitted and were filed
             separately  with the Securities  and Exchange  Commission
             pursuant   to  the   Company's   application   requesting
             confidential  treatment in accordance  with Rule 24b-2 as
             promulgated under the Securities Exchange Act of 1934, as
             amended).

10.27        License  Agreement,  dated as of October 19, 1999, by and    (16)
             between the Company and Newco  (portions  of this exhibit
             were   omitted  and  were  filed   separately   with  the
             Securities  and  Exchange   Commission  pursuant  to  the
             Company's application  requesting  confidential treatment
             in accordance  with Rule 24b-2 as  promulgated  under the
             Securities Exchange Act of 1934, as amended).

10.28        License  Agreement,  dated as of October 19, 1999, by and    (16)
             between  Elan  Pharma  International  Limited  and  Newco
             (portions  of this  exhibit  were  omitted and were filed
             separately  with the Securities  and Exchange  Commission
             pursuant   to  the   Company's   application   requesting
             confidential  treatment in accordance  with Rule 24b-2 as
             promulgated under the Securities Exchange Act of 1934, as
             amended).

10.29        Registration  Rights  Agreement  dated as of October  18,    (16)
             1999 by and between Elan and the Company.

13           Portions of the Company's  Annual Report to  Stockholders     (1)
             for the year ended December 31, 1999 relating to Items 6,
             7 and 8.

21           Subsidiaries of Registrant (1)

23.1         Consent of Ernst & Young LLP (1)

27           Financial Data Schedule (1)

- -----------------------
(1)   Filed herewith.
(2)   Incorporated  by reference to the  Company's  Annual Report on Form 10-KSB
      for its fiscal year ended  December 31, 1995 filed with the Securities and
      Exchange Commission.
                                       25
<PAGE>

(3)   Incorporated by reference to the Company's Quarterly Report on Form 10-QSB
      for the quarter ended June 30, 1996 filed with the Securities and Exchange
      Commission.
(4)   Incorporated by reference to the Company's  Quarterly  Report on Form 10-Q
      for the quarter ended June 30, 1997 filed with the Securities and Exchange
      Commission.
(5)   Incorporated by reference to the Company's  Quarterly  Report on Form 10-Q
      for the quarter  ended  September 30, 1997 filed with the  Securities  and
      Exchange Commission.
(6)   Incorporated by reference to the Company's  Quarterly  Report on Form 10-Q
      for the  quarter  ended  March 31,  1997  filed  with the  Securities  and
      Exchange Commission.
(7)   Incorporated  by reference to the  Company's  Annual Report on Form 10-KSB
      for the year  ended  December  31,  1996  filed  with the  Securities  and
      Exchange Commission.
(8)   Incorporated by reference to the Company's  Registration Statement on Form
      S-3 (File No. 333-38327) filed with the Securities and Exchange Commission
      on October 21, 1997.
(9)   Incorporated  by reference  to the  Company's  Current  Report on Form 8-K
      filed with the Securities and Exchange Commission on December 17, 1997.
(10)  Incorporated by reference to the Company's  Quarterly  Report on Form 10-Q
      for the quarter ended June 30, 1998 filed with the Securities and Exchange
      Commission.
(11)  Incorporated by reference to Exhibit 3 of the Company's  Current Report on
      Form 8-K,  dated April 17, 1998,  filed with the  Securities  and Exchange
      Commission.
(12)  Incorporated by reference to Exhibit 2 of the Company's  Current Report on
      Form 8-K,  dated June 22,  1998,  filed with the  Securities  and Exchange
      Commission.
(13)  Incorporated  by reference to exhibits to the Company's  Current Report on
      Form 8-K,  dated July 16,  1998,  filed with the  Securities  and Exchange
      Commission.
(14)  Incorporated by reference to the Company's  Annual Report on Form 10-K for
      the year ended  December 31, 1997 filed with the  Securities  and Exchange
      Commission.
(15)  Incorporated by reference to the Company's  Annual Report on Form 10-K for
      the year ended  December 31, 1998 filed with the  Securities  and Exchange
      Commission.
(16)  Incorporated  by reference  to the  Company's  Current  Report on Form 8-K
      filed with the Securities and Exchange Commission on November 2, 1999.
(b)   Reports on Form 8-K

      (1)   Current  Report  on Form 8-K  filed  with  Securities  and  Exchange
            Commission on October 22, 1999.

      (2)   Current  Report  on  Form  8-K  with  the  Securities  and  Exchange
            Commission on November 2, 1999.

                                       26
<PAGE>

                                   SIGNATURES

            Pursuant  to  the  requirements  of  Section  13  or  15(d)  of  the
Securities  Exchange Act of 1934,  the registrant has duly caused this report to
be signed on its behalf by the undersigned, thereunto duly authorized.

                                         SHEFFIELD PHARMACEUTICALS, INC.

Dated: March 27, 2000                    /S/ Loren G. Peterson
                                         ---------------------------------------
                                         Loren G. Peterson
                                         President and Chief Executive Officer

                                POWER OF ATTORNEY

            Sheffield  Pharmaceuticals,  Inc.  and  each of the  undersigned  do
hereby  appoint  Loren  G.  Peterson  and  Thomas  Fitzgerald  and  each of them
severally,  its or his or her true and lawful  attorney  to execute on behalf of
Sheffield  Pharmaceuticals,  Inc. and the  undersigned any and all amendments to
this  Annual  Report and to file the same with all  exhibits  thereto  and other
documents in connection therewith,  with the Securities and Exchange Commission;
each of such attorneys shall have the power to act hereunder with or without the
other.

            In  accordance  with the Exchange Act of 1934,  this report has been
signed  below by the  following  persons  on  behalf  of the  Registrant  in the
capacities and on the dates indicated.



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

  /S/ Thomas M. Fitzgerald         Chairman and Director      March 27, 2000
- -------------------------------
    Thomas M. Fitzgerald

  /S/  Loren G. Peterson           Director, President and    March 27, 2000
- -------------------------------    Chief Executive Officer
    Loren G. Peterson

  /S/  John M. Bailey              Director                   March 27, 2000
- -------------------------------
    John M. Bailey

  /S/  Digby W. Barrios            Director                   March 27, 2000
- -------------------------------
    Digby W. Barrios

  /S/  Todd C. Davis               Director                   March 27, 2000
- -------------------------------
    Todd C. Davis

  /S/ Scott A. Hoffmann            Vice President, Chief      March 27, 2000
- -------------------------------    Financial Officer,
    Scott A. Hoffmann              Treasurer and Secretary
                                   (Chief Financial and Chief
                                   Accounting Officer)



<PAGE>
Sheffield Pharmaceuticals, Inc.                              Exhibit 13
(a development stage enterprise)

                         SELECTED FINANCIAL INFORMATION
                   (In dollars, except per share information)


<TABLE>
<CAPTION>
                                                                               Year Ended December 31
                                                     ----------------------------------------------------------------------------
                                                           1999           1998           1997            1996            1995
                                                     ----------------------------------------------------------------------------
<S>                                                   <C>             <C>              <C>             <C>           <C>
CONSOLIDATED STATEMENT OF OPERATIONS DATA:

Revenues:
      Contract research revenue                      $    399,378    $       --      $       --      $       --      $       --
      Sublicense revenue                                     --           350,000         500,000         510,000            --
                                                     ------------    ------------    ------------    ------------    ------------

      Total revenues                                      399,378         350,000         500,000         510,000            --

Operating costs and expenses:

     Acquired research and development
       in-process technology                           15,000,000      13,325,000       1,650,000            --              --
     Research and development                           3,421,734       2,351,301       3,729,193       3,841,818       4,424,154
     General and administrative                         2,277,136       3,043,070       4,627,567       3,831,204       2,979,437
                                                     ------------    ------------    ------------    ------------    ------------

     Total operating costs and expenses                20,698,870      18,719,371      10,006,760       7,673,022       7,403,591
                                                     ------------    ------------    ------------    ------------    ------------

Loss from operations                                  (20,299,492)    (18,369,371)     (9,506,760)     (7,163,022)     (7,403,591)

Interest income                                            91,941          60,273          56,914         163,664          80,610
Interest expense                                         (162,237)       (251,363)        (39,292)         (9,531)        (64,736)
Minority interest in loss of subsidiary                 2,985,000            --              --              --              --
                                                     ------------    ------------    ------------    ------------    ------------

Net loss                                             $(17,384,788)   $(18,560,461)   $ (9,489,138)   $ (7,008,889)   $ (7,387,717)
                                                     ============    ============    ============    ============    ============

Basic and diluted net loss per share                 $       (.64)   $       (.85)   $       (.80)   $       (.65)   $       (.90)

Basic and diluted weighted average common
  shares outstanding                                   27,236,715      21,931,040      11,976,090      10,806,799       8,185,457


CONSOLIDATED BALANCE SHEET DATA:

Working capital (net deficiency)                     $  3,344,174    $  1,456,833    $   (837,564)   $  1,433,773    $  1,585,675

Total assets                                            5,048,655       2,862,521         689,937       2,773,884       2,221,050

Long-term debt & redeemable preferred stock             2,000,000       1,000,000       4,019,263          27,206            --

Accumulated deficit                                   (73,409,828)    (55,156,763)    (36,157,290)    (26,588,652)    (19,579,763)

Stockholders' equity (net capital deficiency)             671,073         655,205      (4,716,751)      1,695,837       1,792,363

- ------------
</TABLE>

No  cash  dividends  have  been  paid on  Common  Stock  for any of the  periods
presented.

Loss per share is based upon the weighted  average  number of common and certain
common equivalent shares outstanding.

See consolidated financial statements and accompanying footnotes.

                                       1
<PAGE>
Sheffield Pharmaceuticals, Inc.
(a development stage enterprise)

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
AND RESULTS OF OPERATIONS

            The following discussion contains certain forward-looking statements
within the meaning of Section 27A of the Securities Act of 1933, as amended, and
Section  21E of the  Securities  Exchange  Act of 1934,  as  amended,  which are
intended to be covered by the safe harbors created thereby.  All forward-looking
statements involve risks and uncertainty,  including without  limitation,  risks
set forth in Part I of the Company's  Form 10-K for the year ended  December 31,
1999.

            The discussion and analysis below should be read in conjunction with
the  Financial  Statements  of the Company and the  related  Notes to  Financial
Statements included on pages 7 - 18 in this Annual Report.

Overview

            Sheffield Pharmaceuticals,  Inc. ("Sheffield" or the "Company") is a
specialty pharmaceutical company focused on development and commercialization of
later stage,  lower risk  pharmaceutical  products  that  utilize the  Company's
unique proprietary pulmonary delivery  technologies.  Through its alliances with
Elan  Corporation,  plc ("Elan"),  Zambon Group SpA  ("Zambon"),  and Siemens AG
("Siemens"),   Sheffield   is  currently   developing   nine   respiratory   and
non-respiratory  therapies  to be  delivered  through  its  proprietary  Metered
Solution  Inhaler  ("MSI") and Aerosol Drug Delivery  System ("ADDS") to address
unmet market needs.

            The  consolidated  financial  statements  include  the  accounts  of
Sheffield and its wholly owned subsidiaries,  Systemic Pulmonary Delivery,  Ltd.
("SPD"), Ion Pharmaceuticals,  Inc., and CP Pharmaceuticals, Inc., and its 80.1%
owned subsidiary Respiratory Steroid Delivery, Ltd. ("RSD").

            The  Company  is in the  development  stage  and to  date  has  been
principally engaged in research,  development and licensing efforts. The Company
has generated  minimal  operating  revenue and will require  additional  capital
which the Company  intends to obtain  through  out-licensing  as well as through
equity and debt  offerings  to  continue to operate  its  business.  Even if the
Company is able to successfully develop new products,  there can be no assurance
that the Company will generate sufficient revenues from the sale or licensing of
such products to be profitable.

            In  October  1999,   Elan   International   Services,   Ltd.  ("Elan
International"),  an  affiliate  of Elan,  and the  Company  formed a new  joint
venture,  RSD, to develop certain respiratory steroid products.  Under the terms
of the  agreement,  the Company  issued to Elan  International  12,015 shares of
Series  D  Cumulative  Convertible   Exchangeable  Preferred  Stock  ("Series  D
Preferred  Stock"),  for $12.015  million.  In turn,  the Company made an equity
investment of $12.015  million  representing  an initial 80.1% ownership in RSD.
RSD paid $15.0 million to license certain pulmonary  NanoCrystal(TM)  technology
from Elan  Pharmaceutical  Technologies,  a division of Elan. Elan International
has also committed to purchase,  on a drawdown  basis,  up to an additional $4.0
million  of the  Company's  Series  E  Cumulative  Convertible  Preferred  Stock
("Series E Preferred  Stock").  The Series E Preferred Stock will be utilized by
the Company to fund its portion of RSD's  operating and  development  costs.  In
addition to the above, the Company issued to Elan International  5,000 shares of
Series F  Convertible  Non-Exchangeable  Preferred  Stock  ("Series F  Preferred
Stock"),  for $5.0 million. The proceeds of the Series F Preferred Stock will be
utilized by Sheffield for its own operating purposes.

            In June 1998,  the  Company  and Elan  International  formed a joint
venture,  SPD, to develop certain systemic applications for use in the Company's
pulmonary  technologies.  The Company  issued 5.6 million shares of Common Stock
and 11,500 shares of Series C Cumulative  Convertible Preferred Stock ("Series C
Preferred  Stock")  for  $17.5  million.  In turn,  the  Company  made an equity
investment  of $17.5 million in SPD,  representing  a 100%  ownership  interest.
Under the terms of the  agreement,  SPD acquired the  Ultrasonic  Pulmonary Drug
Absorption  System and the Absorption  Enhancing  Technology from Elan for $12.5
million.  SPD is responsible  for the  development of these  technologies.  Elan
agreed to make available to the Company an additional $2.0 million in funding in
the form of a convertible note, at the option of the Company.  In July 1998, SPD
acquired  from Aeroquip  Corporation,  the ADDS, a new  generation  metered dose
inhaler for $825,000.  SPD holds the rights to all systemic disease applications
of the ADDS  technology.  Sheffield  retained the rights to develop  respiratory
disease applications of the ADDS.


                                       2
<PAGE>

            In June 1998, the Company  entered into an agreement with Zambon for
a sublicense  to the Company's  proprietary  MSI drug  delivery  system.  Zambon
received an  exclusive  world-wide  marketing  and  development  sublicense  for
respiratory  products to be delivered by the MSI including four drugs previously
under development by Sheffield.  Sheffield retained certain  co-promotion rights
in the  U.S.  for  respiratory  drugs  as well as the  worldwide  marketing  and
development  rights for all  applications of the MSI delivery system outside the
respiratory therapeutic area. As part of this transaction, Zambon agreed to fund
all remaining development costs relating to these respiratory products, paid the
Company an up-front fee of $2.15 million in the form of an equity  investment of
2.6 million shares of Common Stock, and will pay the Company milestone  payments
upon  marketing  approval  for  each of the four  products  and  royalties  upon
commercialization.  In addition,  Zambon has committed to provide Sheffield with
an  interest-free  line of credit  upon the  achievement  of  certain  technical
milestones.

Results of Operations

Revenue

            Contract  research  revenue was $399,378 for the year ended December
31, 1999.  There were no contract  research  revenues in 1998 and 1997. The 1999
contract   research   revenues   primarily   represent  revenue  earned  from  a
collaborative  research  agreement  with Zambon  relating to the  development of
respiratory  applications  of  the  MSI.  Costs  of  contract  research  revenue
approximate  such revenue and are included in research and development  expenses
on the consolidated  statement of operations.  Future contract research revenues
and expenses are anticipated to fluctuate  depending,  in part, upon the success
of current clinical studies, and obtaining additional collaborative agreements.

            Sublicense  revenue of $350,000 for the year ended December 31, 1998
relates  to  a  sublicense   agreement  entered  into  during  1997  with  Lorus
Therapeutics,  Inc.  (formerly  Imutec  Pharma Inc.)  ("Lorus").  The  agreement
licensed  rights to a series of compounds for the treatment of cancer,  Kaposi's
sarcoma and actinic keratosis to a newly formed company, NuChem Pharmaceuticals,
Inc.  ("NuChem")  for which Lorus will  provide  funding and  management  of the
development  program.  The Company  received  $500,000 in cash upon  signing the
agreement  in 1997 and  received  583,188  shares of Lorus stock with a value of
$350,000 in 1998. At December 31, 1999 the  Company's  investment in Lorus had a
market value of $519,387. There were no such sublicense revenues in 1999.

Acquisition of Research & Development In-Process Technology

            Acquisition of research and  development  in-process  technology for
the years  ended  December  31,  1999,  1998 and 1997 was $15.0  million,  $13.3
million, and $1.7 million,  respectively.  In 1999, the Company licensed certain
pulmonary  NanoCrystal(TM)  technology from Elan for $15.0 million.  This entire
payment was expensed as the license agreement restricts the Company's use of the
NanoCrystal(TM)  technology  to certain  respiratory  steroid  products that are
currently research and development  projects.  In 1998, the Company acquired the
ADDS from  Aeroquip  Corporation  for  $825,000 and certain  pulmonary  delivery
technologies from Elan for $12.5 million. The 1997 amount is attributable to the
acquisition of Camelot Pharmacal,  LLC, a specialty  pharmaceutical company. The
1998  and  1997  acquisitions  were  expensed  in the year  acquired  since  the
technologies  had  not  demonstrated   technological   feasibility  and  had  no
alternative future uses.

Research and Development

            Research  and  development  expenses  were $3.4 million for the year
ended  December 31, 1999 compared to $2.4 million and $3.7 million for the years
ended  December  31, 1998 and 1997,  respectively.  The increase of $1.0 million
from 1998 to 1999 is due to  modifications  being made to the MSI to enhance its
commercial appeal prior to the start of Phase III MSI-albuterol clinical trials,
and with work associated with the development of a therapy for breakthrough pain
delivered  through the MSI, as well as a migraine therapy  delivered through the
ADDS.  These increases were partially  offset by the shifting of  responsibility
for  development  expenses  of the  respiratory  applications  of the MSI to the
Company's  partner,  Zambon.  The  decrease  of $1.3  million  from 1997 to 1998
reflects both the Company's shifting of responsibility for development  expenses
of the respiratory  applications of the MSI to Zambon and continued winding down
of its early stage  research  projects.  This decrease was  partially  offset by
development costs associated with the ADDS technology acquired in July 1998.


                                       3

<PAGE>

General and Administrative Expenses

            General and  administrative  expenses were $2.3 million for the year
ended  December 31, 1999 compared to $3.0 million and $4.6 million for the years
ended  December  31, 1998 and 1997,  respectively.  The decrease of $0.7 million
from 1998 to 1999 was primarily  attributable to indirect costs  associated with
completing both the 1998 Zambon and Elan agreements.  In addition,  the decrease
between years resulted from 1998 costs associated with both the retention of the
Company's  former  investor  relations firm and settlement of a dispute with the
innovator of one of the Company's  early stage research  projects.  The decrease
from  1997 to  1998  of $1.6  million  was  due to  lower  compensation  expense
reflecting  fewer employees  during 1998 and the extension of certain option and
warrant  agreements in 1997.  The 1998 decrease also reflects  lower  consulting
costs resulting from indirect expenses associated with two financings  completed
in 1997, and a loss realized on the sale of securities during 1997.

Interest

            Interest  income was $91,941 for the year ended December 31, 1999 as
compared to $60,273 and $56,914 for the years ended  December 31, 1998 and 1997,
respectively.  The $31,668  increase  in  interest  income in 1999 from 1998 was
primarily due to larger balances of cash available for investment.

            Interest  expense was $162,237 for the year ended  December 31, 1999
as compared to $251,363  and $39,292 for the years ended  December  31, 1998 and
1997,  respectively.  The  decrease  of  $89,126  in  1999 as  compared  to 1998
primarily  reflects the 1998  conversion  of the  Company's  Series A Cumulative
Convertible  Preferred  Stock and 6% Convertible  Subordinated  Debentures  into
Common Stock,  partially offset by higher outstanding  balances of a convertible
promissory  note with Elan. The increase of $212,071 in 1998 as compared to 1997
was  primarily  due to  interest  paid  on the  Company's  Series  B  Cumulative
Convertible  Redeemable  Preferred  Stock  ("Series B  Preferred  Stock")  and a
convertible promissory note issued to Elan, both of which were originally issued
in 1998.

Minority Interest in Subsidiary

            Minority  interest in loss of subsidiary  was $2.985 million for the
year ended December 31, 1999. RSD, a consolidated  and 80.1% owned subsidiary of
the Company, incurred a loss of $15.0 million in 1999 resulting from the license
of certain pulmonary NanoCrystal(TM) technology from Elan. The minority interest
in loss of subsidiary represents Elan's portion, or 19.9%, of RSD's 1999 losses.
Elan's  investment  in RSD,  shown as  minority  interest in  subsidiary  on the
consolidated balance sheets, was $0 at December 31, 1999.

Liquidity and Capital Resources

            At December 31, 1999,  the Company had $3.9 million in cash and cash
equivalents  compared to $2.5 million at December 31, 1998. The increase of $1.4
million  reflects  $16.7  million  in net  proceeds  from  the  issuance  of the
Company's  Series D and Series F Preferred  Stock and proceeds from the issuance
of a convertible  promissory note to Elan of $1.0 million.  These increases were
partially offset by $16.1 million of cash  disbursements  used primarily to fund
operating activities, including a $15.0 million license fee paid to Elan as part
of the 1999  inhaled  steroid  development  agreement,  partially  offset by the
receipt  of a  $1.0  million  interest-free  advance  against  future  milestone
payments from Zambon.

            In October 1999,  as part of a licensing  agreement  with Elan,  the
Company received gross proceeds of $17.0 million related to the issuance to Elan
of  12,015  shares  of Series D  Preferred  Stock  and 5,000  shares of Series F
Preferred  Stock.  In turn,  the Company  made an equity  investment  of $12.015
million in a joint venture,  RSD,  representing an initial 80.1% ownership.  The
remaining  proceeds from the  above-mentioned  preferred  stock issuance will be
utilized for general operating purposes. As part of the agreement, Elan has also
committed to purchase,  on a drawdown basis, up to an additional $4.0 million of
the Company's Series E Preferred Stock. The proceeds from the Series E Preferred
Stock will be utilized by the Company to fund its portion of RSD's operating and
development costs.

            In May 1999, in  conjunction  with the  completion of its Phase I/II
MSI-albuterol   trial,   Zambon   provided  the  Company  with  a  $1.0  million
interest-free advance against future milestone payments.  Upon the attainment of
certain future  milestones,  the Company will recognize this advance as revenue.
If the Company  does not achieve  these future  milestones,  the advance must be
repaid in quarterly  installments  of $250,000  commencing  January 1, 2002. The
proceeds  from this advance are not  restricted  as to their use by the Company.
Upon the achievement of certain other technical milestones,  Zambon will provide
an additional $1.0 million advance under the terms of the agreement.



                                       4
<PAGE>


            On April 15, 1998,  the Company  issued 1,250 shares of its Series B
Preferred Stock in a private placement for an aggregate  purchase price of $1.25
million. The proceeds were used to make a payment to Siemens pursuant to the MSI
license agreement.  During 1998, the Company entered into a sublicense agreement
with Zambon that provided the Company  $2.15 million in gross  proceeds from the
sale of 2.6 million  shares of Common  Stock.  The Company  also entered into an
agreement  with Elan that  provided the Company  approximately  $17.5 million of
gross  proceeds  from the sale of 4.6 million  shares of Common Stock and 11,500
shares of the  Company's  Series C Preferred  Stock.  The proceeds from the Elan
transaction were used to purchase certain pulmonary device delivery technologies
from Elan for $12.5  million,  the ADDS for $825,000 from Aeroquip  Corporation,
and to redeem $1.25 million  principal  amount of Series B Preferred  Stock. The
remaining  proceeds  from the  Elan  transaction  were  used  for  research  and
development,  working capital and general corporate  purposes.  Also, as part of
the 1998  Elan  agreement,  Elan  agreed  to make  available  to the  Company  a
convertible  promissory note that provides the Company the right to borrow up to
$2.0  million,  subject  to  satisfying  certain  conditions.  No more than $0.5
million  may be  drawn  under  the  note in any  calendar  quarter  and at least
one-half of the proceeds must be used to fund SPD's development  activities.  As
of December 31, 1999, $2.0 million was outstanding under this note.

            Since  its  inception,  the  Company  has  financed  its  operations
primarily through the sale of securities and convertible debentures,  from which
it raised an aggregate of approximately $70.7 million through December 31, 1999,
of  which  approximately  $30.0  million  has  been  spent  to  acquire  certain
in-process  research and  development  technologies,  and $24.7 million has been
incurred to fund  certain  ongoing  technology  research  projects.  The Company
expects to incur additional costs in the future, including costs relating to its
ongoing  research  and  development  activities,  and  preclinical  and clinical
testing of its product candidates.  The Company may also bear considerable costs
in connection with filing,  prosecuting,  defending  and/or enforcing its patent
and  other  intellectual  property  claims.  Therefore,  the  Company  will need
substantial  additional  capital before it will recognize  significant cash flow
from operations,  which is contingent on the successful commercialization of the
Company's  technologies.  There can be no assurance that any of the technologies
to  which  the  Company  currently  has or may  acquire  rights  can or  will be
commercialized or that any revenues generated from such  commercialization  will
be sufficient to fund existing and future research and development activities.

            Because the Company  does not expect to  generate  significant  cash
flows from operations for at least the next few years,  the Company  believes it
will require  additional funds to meet future costs. The Company will attempt to
meet its capital requirements with existing cash balances and through additional
public or private offerings of its securities, debt financing, and collaboration
and licensing arrangements with other companies.  There can be no assurance that
the  Company  will be able to obtain  such  additional  funds or enter into such
collaborative and licensing  arrangements on terms favorable to the Company,  if
at all. The Company's development programs may be curtailed if future financings
are not completed.

            While the Company does not believe that inflation has had a material
impact on its results of operations, there can be no assurance that inflation in
the future will not impact  financial  markets  which,  in turn,  may  adversely
affect the Company's valuation of its securities and, consequently,  its ability
to raise additional capital,  either through equity or debt instruments,  or any
off-balance sheet refinancing arrangements,  such as collaboration and licensing
agreements with other companies.

Year 2000 Compliance

            The inability of computers,  software and other equipment  utilizing
microprocessors  to  recognize  and properly  process  data fields  containing a
two-digit year is commonly  referred to as the Year 2000 compliance  issue. Such
systems  that are not Year 2000  compliant  may not have  been able to  properly
interpret dates beyond the Year 1999, which may have led to business disruptions
in  the  U.S.  and  internationally.   The  potential  costs  and  uncertainties
associated  with the Year 2000 issue depended on a number of factors,  including
software,  hardware and the nature of the industry in which a company  operates.
Additionally,  companies had to coordinate  with other  entities with which they
electronically interact, such as customers, creditors and borrowers.

            During 1998,  the Company  conducted an  assessment  of its computer
systems to identify  systems that could be affected by the Year 2000 issue.  All
identified  systems that could have potentially been affected by the turnover to
the Year 2000 were tested.  During the second quarter of 1999, all  noncompliant
internal software and hardware were replaced or upgraded to reach compliance. To
date, the Company has experienced no adverse effect on its internal software and
hardware by the Year 2000 turnover.



                                       5
<PAGE>

            The  Company  relies  on  several   universities   and   independent
laboratories (collectively,  "CROs") for conducting a significant portion of the
research and  development of its  technologies  and products.  In addition,  the
Company  relies  on  its  strategic   alliance   partners  to  perform   certain
manufacturing,  research and development  activities  related to its products in
development.  To date,  the  Company  has  experienced  no adverse  effect  from
computer failures of any of its CROs on which the Company relies. However, there
can be no assurance that if these CROs and/or  strategic  alliance  partners (or
their  significant  vendors) were to experience future computer failures related
to the Year 2000  turnover,  these  failures  would not have a material  adverse
effect on the Company's  business,  including the possibility of material delays
in the progress of clinical  trials,  product  development and future receipt of
product sales and related royalties.

            Given the lack of legacy systems at the Company,  the limited number
of issues that have arisen to date, and the level of development  activity,  the
Company has not developed a formal contingency plan for its worse case scenario.
While the Company does not  anticipate  that its worst case scenario will occur,
in the event that any of its major CROs or strategic  alliance  partners  suffer
material Year 2000 disruptions that negatively  impact the Company,  the Company
will evaluate the  materiality of the  disruptions  at that time.  Following the
completion of any necessary  evaluation,  the Company will determine  whether to
delay the  related  clinical  trials or other  research  and  development  while
corrective efforts are being implemented. Depending on the anticipated period of
time it will take to complete such efforts,  the Company may consider  replacing
the applicable CRO with another Year 2000 compliant provider.

            The  total  cost  to the  Company  of  these  Year  2000  compliance
activities was approximately  $20,000.  The Company does not expect to incur any
future significant costs related to these activities.



                                       6
<PAGE>

                SHEFFIELD PHARMACEUTICALS, INC. AND SUBSIDIARIES
                        (a development stage enterprise)
                           Consolidated Balance Sheets
<TABLE>
<CAPTION>

Assets                                                                                                        December 31,
                                                                                                           1999         1998
                                                                                                           ----         ----
<S>                                                                                                 <C>             <C>
Current assets:
      Cash and cash equivalents (Note 1)                                                            $  3,874,437    $  2,456,290
      Marketable equity security (Notes 1 and 8)                                                         519,387         127,774
      Prepaid expenses and other current assets                                                          145,237          39,035
                                                                                                    ------------    ------------
                        Total current assets                                                           4,539,061       2,623,099
                                                                                                    ------------    ------------

Property and equipment (Note 1):
      Laboratory equipment                                                                               407,624         317,032
      Office equipment                                                                                   178,797         175,062
      Leasehold improvements                                                                              15,000           1,323
                                                                                                    ------------    ------------
                    Total at cost                                                                        601,421         493,417
      Less accumulated depreciation and amortization                                                    (311,752)       (253,995)
                                                                                                    ------------    ------------
                        Property and equipment, net                                                      289,669         239,422
                                                                                                    ------------    ------------

Patent costs (Note 1)                                                                                    204,283            --
Other assets                                                                                              15,642            --
                                                                                                    ------------    ------------

      Total assets                                                                                  $  5,048,655    $  2,862,521
                                                                                                    ============    ============

                      Liabilities and Stockholders' Equity

Current liabilities:
      Accounts payable and accrued liabilities                                                      $    773,206    $    615,138
      Sponsored research payable                                                                         421,681         449,805
      Note payable - related party (Note 9)                                                                 --           101,323
                                                                                                    ------------    ------------
                        Total current liabilities                                                      1,194,887       1,166,266

Convertible promissory note (Note 7)                                                                   2,000,000       1,000,000
Unearned revenue (Note 3)                                                                              1,000,000            --
Other long-term liabilities                                                                              182,695          41,050
Commitments and contingencies                                                                               --              --
                                                                                                    ------------    ------------
      Total liabilities                                                                                4,377,582       2,207,316

Minority interest in subsidiary (Note 1)                                                                    --              --

Stockholders' equity (Notes 5 & 6):
      Preferred stock, $.01 par value, authorized 3,000,0000 shares:
                    Series C cumulative convertible preferred stock, authorized 23,000
                        shares; 12,780 and 11,914  shares issued and outstanding at
                        December 31, 1999 and 1998, respectively                                             128             119
                    Series D cumulative convertible exchangeable preferred stock,
                        authorized  21,000 shares;  12,015 and no shares issued and
                        outstanding at December 31, 1999 and 1998, respectively                              120            --
                    Series F convertible non-exchangeable preferred stock, 5,000 shares
                        authorized; 5,000 and no shares issued and outstanding at
                        December 31, 1999 and 1998, respectively                                              50            --
      Common stock, $.01 par value, authorized 60,000,000 and 50,000,000 shares
            at December 31, 1999 and 1998, respectively;  issued and
            outstanding, 27,308,846 and 27,058,419 shares at
            December 31, 1999 and 1998, respectively                                                     273,088         270,584
      Notes receivable in connection with sale of stock                                                     --           (10,000)
      Additional paid-in capital                                                                      73,638,128      55,773,491
      Other comprehensive income (loss)                                                                  169,387        (222,226)
      Deficit accumulated during development stage                                                   (73,409,828)    (55,156,763)
                                                                                                    ------------    ------------

                Total stockholders' equity                                                               671,073         655,205
                                                                                                    ------------    ------------

Total liabilities and stockholders' equity                                                          $  5,048,655    $  2,862,521
                                                                                                    ============    ============
</TABLE>

                See notes to consolidated financial statements.

                                       7
<PAGE>

                SHEFFIELD PHARMACEUTICALS, INC. AND SUBSIDIARIES
                        (a development stage enterprise)
                     Consolidated Statements of Operations
    For the Years Ended December 31, 1999, 1998 and 1997 and for the Period
             from October 17, 1986 (inception) to December 31, 1999

<TABLE>
<CAPTION>
                                                                                                                       October 17,
                                                                                                                           1986
                                                                                                                     (inception) to
                                                                                        Years ended December 31,       December 31,
                                                                            1999           1998              1997          1999
                                                                            ----           ----              ----          ----
<S>                                                                    <C>             <C>             <C>             <C>
Revenues:
     Contract research revenue (Note 1)                                $    399,378    $       --      $       --      $    399,378
     Sublicense revenue (Note 8)                                               --           350,000         500,000       1,360,000
                                                                       ------------    ------------    ------------    ------------
         Total revenues                                                     399,378         350,000         500,000       1,759,378

Expenses:
   Acquisition of research and development in-process
         technology (Notes 2 & 8)                                        15,000,000      13,325,000       1,650,000      29,975,000
   Research and development                                               3,421,734       2,351,301       3,729,193      25,025,424
   General and administrative                                             2,277,136       3,043,070       4,627,567      21,842,465
                                                                       ------------    ------------    ------------    ------------

        Total expenses                                                   20,698,870      18,719,371      10,006,760      76,842,889
                                                                       ------------    ------------    ------------    ------------

Loss from operations                                                    (20,299,492)    (18,369,371)     (9,506,760)    (75,083,511)

Interest income                                                              91,941          60,273          56,914         606,041
Interest expense                                                           (162,237)       (251,363)        (39,292)       (573,355)
Minority interest in loss of subsidiary (Note 1)                          2,985,000            --              --         2,985,000
                                                                       ------------    ------------    ------------    ------------

Loss before extraordinary item                                          (17,384,788)    (18,560,461)     (9,489,138)    (72,065,825)
Extraordinary item                                                             --              --              --            42,787
                                                                       ------------    ------------    ------------    ------------

Net loss                                                               $(17,384,788)   $(18,560,461)   $ (9,489,138)   $(72,023,038)
                                                                       ============    ============    ============    ============

Accretion of mandatorily redeemable preferred stock                            --           (23,900)        (79,500)       (103,400)
                                                                       ------------    ------------    ------------    ------------

Net loss - attributable to common shares                               $(17,384,788)   $(18,584,361)   $ (9,568,638)   $(72,126,438)
                                                                       ============    ============    ============    ============

Basic and diluted weighted average common shares
outstanding (Note 1)                                                     27,236,715      21,931,040      11,976,090       7,917,966

Basic and diluted net loss  per share of common stock (Note 1):
    Loss before extraordinary item                                     $       (.64)   $       (.85)   $       (.80)   $      (9.10)
    Extraordinary item                                                         --              --              --               .01
                                                                       ------------    ------------    ------------    ------------
    Net loss per share                                                 $       (.64)   $       (.85)   $       (.80)   $      (9.09)
                                                                       ============    ============    ============    ============

</TABLE>


                See notes to consolidated financial statements.
                                       8
<PAGE>
                SHEFFIELD PHARMACEUTICALS, INC. AND SUBSIDIARIES
                        (a development stage enterprise)
    Consolidated Statements of Stockholders' Equity (Net Capital Deficiency)
      For the Period from October 17, 1986 (Inception) to December 31, 1999

<TABLE>
<CAPTION>
                                                                                   Notes receivable in                 Other
                                                                                       connection      Additional   comprehen
                                                             Preferred      Common    with sale of      paid-in   -sive income
                                                               stock        Stock         stock         capital      (loss)
                                                             ---------      ------    ------------      -------   ------------

<S>                                                        <C>          <C>             <C>          <C>           <C>
Balance at October 17, 1986                                $      --    $       --      $    --      $      --     $    --
Common stock issued                                               --      11,334,252         --       17,024,469        --
Reincorporation in Delaware at $.01 par value                     --     (11,220,369)        --       11,220,369        --
Common stock subscribed                                           --            --       (110,000)          --          --
Common stock options issued                                       --            --           --           75,000        --
Comprehensive income (loss):
       Unrealized loss on marketable securities                   --            --           --             --       (39,232)
       Net loss                                                   --            --           --             --          --
Comprehensive income (loss)                                       --            --           --             --          --
                                                           ----------   ------------    ---------    -----------   ---------
Balance at December 31, 1996                                      --         113,883     (110,000)    28,319,838     (39,232)

Issuance of common stock in connection with
     acquisition of Camelot Pharmacal, LLC                        --           6,000         --        1,644,000        --
Common stock issued                                               --           6,612       37,400      1,041,750        --
Common stock options and warrants issued                          --            --           --          165,868        --
Common stock options extended                                     --            --           --          215,188        --
Accretion of issuance costs for Series A preferred stock          --            --           --             --          --
Comprehensive income (loss):
     Unrealized gain on marketable securities                     --            --           --             --        39,232
     Net loss                                                     --            --           --             --          --
Comprehensive income (loss)                                       --            --           --             --          --
                                                           ----------   ------------    ---------    -----------   ---------
Balance at December 31, 1997                                      --         126,495      (72,600)    31,386,644        --

Common stock issued                                               --         144,089       62,600     12,472,966        --
Series C preferred stock issued                                   115           --           --       11,499,885        --
Series C preferred stock dividends                                  4           --           --          413,996        --
Accretion of issuance costs for Series A preferred stock          --            --           --             --          --
Comprehensive income (loss):
     Unrealized loss on marketable securities                     --            --           --             --      (222,226)
     Net loss                                                     --            --           --             --          --
Comprehensive income (loss)                                       --            --           --             --          --
                                                           ----------   ------------    ---------    -----------   ---------
Balance at December 31, 1998                                      119        270,584      (10,000)    55,773,491    (222,226)

Common stock issued                                               --           2,504       10,000         89,059        --
Series C preferred stock dividends                                  9           --           --          865,991        --
Series D preferred stock issued                                   120           --           --       12,014,880        --
Series F preferred stock issued                                    50           --           --        4,691,255        --
Common stock warrants issued                                      --            --           --          203,452        --
Comprehensive income (loss):
     Unrealized gain on marketable securities                     --            --           --             --       391,613
     Net loss                                                     --            --           --             --          --
Comprehensive income (loss)                                       --            --           --             --          --
                                                                        ============    =========    ===========   =========
Balance at December 31, 1999                               $      298   $    273,088    $    --      $73,638,128   $ 169,387
                                                           ==========   ============    =========    ===========   =========

</TABLE>

<TABLE>
<CAPTION>


                                                            Deficit           Total
                                                           accumulated    stockholders'
                                                              during       equity (net
                                                           development       capital
                                                              stage        deficiency)
                                                           -----------    --------------

<S>                                                       <C>              <C>
Balance at October 17, 1986                               $       --       $      --
Common stock issued                                               --        28,358,721
Reincorporation in Delaware at $.01 par value                     --              --
Common stock subscribed                                           --          (110,000)
Common stock options issued                                       --            75,000
Comprehensive income (loss):
       Unrealized loss on marketable securities                   --              --
       Net loss                                            (26,588,652)           --
Comprehensive income (loss)                                       --       (26,627,884)
                                                          ------------    ------------
Balance at December 31, 1996                               (26,588,652)      1,695,837

Issuance of common stock in connection with
     acquisition of Camelot Pharmacal, LLC                        --         1,650,000
Common stock issued                                               --         1,085,762
Common stock options and warrants issued                          --           165,868
Common stock options extended                                     --           215,188
Accretion of issuance costs for Series A preferred stock       (79,500)        (79,500)
Comprehensive income (loss):
     Unrealized gain on marketable securities                     --              --
     Net loss                                               (9,489,138)           --
Comprehensive income (loss)                                       --        (9,449,906)
                                                          ------------    ------------
Balance at December 31, 1997                               (36,157,290)     (4,716,751)

Common stock issued                                               --        12,679,655
Series C preferred stock issued                                   --        11,500,000
Series C preferred stock dividends                            (415,112)         (1,112)
Accretion of issuance costs for Series A preferred stock       (23,900)        (23,900)
Comprehensive income (loss):
     Unrealized loss on marketable securities                     --              --
     Net loss                                              (18,560,461)           --
Comprehensive income (loss)                                       --       (18,782,687)
                                                          ------------    ------------
Balance at December 31, 1998                               (55,156,763)        655,205

Common stock issued                                               --           101,563
Series C preferred stock dividends                            (868,277)         (2,277)
Series D preferred stock issued                                   --        12,015,000
Series F preferred stock issued                                   --         4,691,305
Common stock warrants issued                                      --           203,452
Comprehensive income (loss):
     Unrealized gain on marketable securities                     --              --
     Net loss                                              (17,384,788)           --
Comprehensive income (loss)                                       --       (16,993,175)
                                                          ============    ============
Balance at December 31, 1999                              $(73,409,828)   $    671,073
                                                          ============    ============

</TABLE>

                See notes to consolidated financial statements.

                                       9
<PAGE>
                SHEFFIELD PHARMACEUTICALS, INC. AND SUBSIDIARIES
                        (a development stage enterprise)
                      Consolidated Statements of Cash Flows
            For the Years Ended December 31, 1999, 1998 and 1997 and
     for the Period from October 17, 1986 (Inception) to December 31, 1999

<TABLE>
<CAPTION>
                                                                                                                    October 17, 1986
                                                                                                                     (inception) to
                                                                                    Years ended December 31,           December 31,
                                                                               1999            1998           1997        1999
                                                                               ----            ----           ----        ----
<S>                                                                       <C>            <C>            <C>           <C>
Cash flows from operating activities:
   Net loss                                                              $(17,384,788)  $(18,560,461)  $(9,489,138)  $(72,023,038)
   Adjustments to reconcile net loss to net cash used by
     development stage activities:
        Issuance of common stock, stock options/warrants for
          services                                                            203,452        359,913       381,056      2,485,425
        Depreciation and amortization                                          86,341         68,794        84,584        479,560
         Non-cash acquisition of research and development
           in-process technology                                                 --             --       1,650,000      1,650,000
        (Increase) decrease in prepaid expenses & other current
          assets                                                             (106,202)         8,343        (3,403)      (204,278)
        (Increase) decrease in other assets                                  (219,925)        25,738        14,278       (160,884)
        Increase (decrease) in accounts payable and accrued liabilities       154,418       (279,264)      440,817        185,866
        (Decrease) increase in sponsored research payable                     (28,124)       (20,963)     (109,389)       998,751
        Increase in unearned revenue                                        1,000,000           --            --        1,000,000
        Other                                                                 151,396       (285,826)      353,790        562,990
                                                                         ---------------------------------------------------------
Net cash used by development stage activities                             (16,143,432)   (18,683,726)   (6,677,405)   (65,025,608)
                                                                         ---------------------------------------------------------

Cash flows from investing activities:
     Acquisition of laboratory and office equipment, and leasehold
         improvements                                                        (136,588)      (131,772)      (53,543)      (585,712)
     Other                                                                     10,000        132,200       160,798        117,998
                                                                         ------------    -----------    ----------    ------------
Net cash (used) provided by investing activities                             (126,588)           428       107,255       (467,714)
                                                                         ------------    -----------    ----------    ------------
Cash flows from financing activities:
     Payments on debt and capital leases                                     (709,701)       (54,020)      (50,925)      (836,174)
     Net proceeds from issuance of:
         Debt                                                               1,600,000      1,150,000     1,750,000      5,050,000
         Common stock                                                            --        8,150,000          --       21,418,035
         Preferred stock                                                   16,706,305     12,750,000     3,284,812     32,741,117
     Proceeds from exercise of warrants/stock options                          91,563           --            --       11,493,721
     Other                                                                       --       (1,250,000)         --         (500,024)
                                                                         ------------    -----------    ----------    ------------
Net cash provided by financing activities                                  17,688,167     20,745,980     4,983,887     69,366,675
                                                                         ------------    -----------    ----------    ------------

Net increase (decrease) in cash and cash equivalents                        1,418,147      2,062,682    (1,586,263)     3,873,353
Cash and cash equivalents at beginning of period                            2,456,290        393,608     1,979,871          1,084
                                                                         ------------    -----------    ----------    ------------
Cash and cash equivalents at end of period                               $  3,874,437   $  2,456,290   $   393,608   $  3,874,437
                                                                         ============    ===========    ==========    ============

Noncash investing and financing activities:
     Common stock, stock options and warrants issued for services        $    203,452   $    359,913   $   381,056   $  2,485,425
     Common stock redeemed in payment of notes receivable                        --           10,400          --           10,400
     Acquisition of research and development in-process technology               --             --       1,650,000      1,655,216
     Common stock issued for intellectual property rights                        --             --            --          866,250
     Common stock issued to retire debt                                          --             --            --          600,000
     Common stock issued to redeem convertible securities                        --        4,019,263     1,334,105      5,353,368
     Securities acquired under sublicense agreement                              --          350,000          --          850,000
     Equipment acquired under capital lease                                      --           49,231          --          121,684
     Notes payable converted to common stock                                     --             --            --          749,976
     Stock dividends                                                          868,277        596,195       182,352      1,646,824

Supplemental disclosure of cash information:  Interest paid              $      8,919   $    186,519   $    10,417   $    276,320

</TABLE>

                See notes to consolidated financial statements.

                                       10
<PAGE>
SHEFFIELD PHARMACEUTICALS, INC. AND SUBSIDIARIES
(a development stage enterprise)

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1.          SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of  Presentation - Sheffield  Pharmaceuticals,  Inc.  (formerly  Sheffield
Medical Technologies Inc.) ("Sheffield" or the "Company") was incorporated under
Canadian law in October 1986. In May 1992, the Company became  domesticated as a
Wyoming Corporation pursuant to a "continuance"  procedure under Wyoming law. In
January 1995, the Company's  stockholders approved the proposal to reincorporate
the Company in Delaware,  which was  effected on June 13,  1995.  The Company is
focused on the  development  and  commercialization  of later stage,  lower risk
pharmaceutical  products that utilize the Company's unique proprietary pulmonary
delivery technologies.

The Company is in the development stage and to date has been principally engaged
in  research,  development  and  licensing  efforts.  The Company has  generated
minimal  operating  revenue,  sustained  significant net operating  losses,  and
requires   additional  capital  that  the  Company  intends  to  obtain  through
out-licensing  as well as  through  equity and debt  offerings  to  continue  to
operate its business.  Even if the Company is able to  successfully  develop new
products,  there can be no assurance  that the Company will generate  sufficient
revenues from the sale or licensing of such products to be profitable.

Principles of Consolidation - The consolidated  financial statements include the
accounts of Sheffield  and its wholly  owned  subsidiaries,  Systemic  Pulmonary
Delivery, Ltd. ("SPD"), Ion Pharmaceuticals, Inc., and CP Pharmaceuticals, Inc.,
and its 80.1% owned subsidiary,  Respiratory Steroid Delivery, Ltd. ("RSD"). All
significant  intercompany  transactions  have been  eliminated.  Investments  in
affiliated  companies that are 50% owned or less, and where the Company does not
exercise control, are accounted for using the equity method.

Use of Estimates - The  preparation  of the  financial  statements in conformity
with  generally  accepted  accounting  principles  requires  management  to make
estimates  and  assumptions  that affect the amounts  reported in the  financial
statements  and  accompanying  notes.  Actual  results  could  differ from those
estimates.

Cash  Equivalents - The Company  considers all highly  liquid  instruments  with
original  maturities  of three months or less to be cash  equivalents.  Cash and
cash equivalents  include demand deposits held in banks,  interest bearing money
market funds, and corporate commercial paper with A1 or P1 short-term ratings.

Marketable Securities - Marketable securities consist of investments that can be
readily purchased or sold using established markets.  The Company's  securities,
which  are  classified  as  available-for-sale,   are  carried  at  market  with
unrealized  gains  and  losses  reported  as  a  separate   component  of  other
comprehensive income within stockholders' equity.

Property and Equipment - Property and equipment are stated at cost. Depreciation
is computed using the  straight-line  method over three or five year periods for
leasehold  improvements  and office  equipment,  and five  years for  laboratory
equipment.  Assets under capital  leases,  consisting of office  equipment,  are
amortized over the lesser of the useful life or the applicable lease terms.

Patent Costs - Costs associated with obtaining patents,  principally legal costs
and filing fees, are capitalized  and being  amortized on a straight-line  basis
over the remaining  lives of the respective  patents.  The Company  periodically
evaluates  the carrying  amount of these assets based on current  licensing  and
future  commercialization  efforts,  and  if  warranted,   impairment  would  be
recognized.

Contract  Research  Revenue  -  Contract  revenue  from  collaborative  research
agreements  is  recorded  when  earned and as the  related  costs are  incurred.
Payments  received  which are related to future  performance  are  deferred  and
recognized as revenue in the period in which they are earned.

Research and Development  Costs - Research and development costs ("R & D costs")
are  expensed  as  incurred,  except for fixed  assets to which the  Company has
title, which are capitalized and depreciated over their estimated useful lives.

Income Taxes - The Company  utilizes the liability  method to account for income
taxes.  Under this method,  deferred tax assets and  liabilities  are determined
based on  differences  between  financial  reporting and tax bases of assets and
liabilities  and are measured  using  enacted tax rates and laws that will be in
effect when the differences are expected to reverse.

Fair Value of  Financial  Instruments  - The  carrying  amounts of cash and cash
equivalents,  accounts  payable,  sponsored  research  payable and notes payable
approximates fair value.

                                       11
<PAGE>

Basic  Net  Loss per  Share  of  Common  Stock - Basic  net  loss  per  share is
calculated  in  accordance  with  Statement  of Financial  Accounting  Standards
("SFAS") No. 128, Earnings Per Share. Basic net loss per share is based upon the
weighted average common stock outstanding during each year. Potentially dilutive
securities  such as stock  options,  warrants,  convertible  debt and  preferred
stock,  have not been  included  in any  years  presented  as  their  effect  is
antidilutive.

Stock-Based   Compensation   -  SFAS  No.  123,   Accounting   for   Stock-Based
Compensation,  defines a fair value method of  accounting  for stock options and
similar equity  instruments.  As permitted by SFAS 123, the Company continues to
account for such transactions  under Accounting  Principal Board Opinion No. 25,
Accounting for Stock Issued to Employees ("APB 25"), and has disclosed in a note
to the financial  statements pro forma net loss and earnings per share as if the
Company had  applied the fair value  method of  accounting  for its  stock-based
awards.  Under APB 25, no expense is generally  recognized at the time of option
grant because the exercise  price of the Company's  employee stock option equals
or exceeds the fair market value of the  underlying  common stock on the date of
grant.

Comprehensive  Income (Loss) - Effective  January 1, 1998,  the Company  adopted
SFAS No. 130, Reporting  Comprehensive  Income, which establishes  standards for
the reporting and display of  comprehensive  income and its components in a full
set of general  purpose  financial  statements  and applies to all  enterprises.
Other  comprehensive  income or loss  shown in the  consolidated  statements  of
stockholders'  equity at December 31, 1999, 1998 and 1997 is solely comprised of
unrealized  gains or losses on marketable  securities.  The  unrealized  gain on
marketable  securities  during 1997  includes  reclassification  adjustments  of
$324,915 for losses realized in income from the sale of the securities.

Segment  Information - Effective  January 1, 1998, the Company  adopted SFAS No.
131, Disclosures about Segments of an Enterprise and Related Information,  which
establishes  standards  for the way  that  public  business  enterprises  report
information about operating segments in annual financial statements and requires
that those enterprises  report selected  information about operating segments in
interim financial reports. It also establishes standards for related disclosures
about products and services,  geographic areas and major customers.  The Company
operates in one reportable segment as defined by SFAS No. 131.

2.          ACQUISITION

            In April 1997, the Company, through its wholly owned subsidiary,  CP
Pharmaceuticals,  Inc.,  completed its  acquisition  of Camelot  Pharmacal,  LLC
("Camelot"),  a Missouri limited liability company,  focusing on the development
of specialty pharmaceuticals.  The purchase price consisted of 600,000 shares of
the  Company's  Common Stock  (valued at $2.75 per share) and the  assumption of
certain  liabilities in excess of tangible  assets  acquired of $8,262 (see Note
5). The  transaction  was treated as a purchase  for  accounting  purposes,  and
accordingly,  the assets and  liabilities  assumed  have been  recorded at their
estimated  fair market values at the date of  acquisition.  Since  technological
feasibility of the in-process  research and development  costs have not yet been
established and the technology had no alternative  future use at the acquisition
date,  the  in-process   research  and  development  costs  of  $1,650,000  were
immediately  written-off  and  included  in  the  results  of  operations  as  a
non-recurring  charge for the year  ended  December  31,  1997.  Camelot  had no
revenue and  minimal  operating  losses for the period  ended April 24, 1997 and
therefore pro forma disclosure has not been included.

3.          UNEARNED REVENUE

            In May 1999, in  conjunction  with the  completion of the Phase I/II
Metered  Solution Inhaler ("MSI")  albuterol trial,  Zambon Group SpA ("Zambon")
provided the Company with a $1.0 million  interest-free  advance  against future
milestone  payments.  Upon the  attainment  of certain  future  milestones,  the
Company will recognize this advance as revenue.  If the Company does not achieve
these future milestones, the advance must be repaid in quarterly installments of
$250,000  commencing on January 1, 2002.  The proceeds from this advance are not
restricted as to their use by the Company (see Note 8).

4.          LEASES

            The  Company  leases its office  space and certain  equipment  under
noncancelable  operating and capital leases that expire at various dates through
2003.  At December 31, 1999,  assets held under  capital  leases  consisting  of
office  equipment  were $31,090,  net of  accumulated  amortization  of $18,141.
Future minimum lease payments under capital and operating leases at December 31,
1999 are as follows:

                                       12
<PAGE>
<TABLE>
<CAPTION>

                                                                                       Capital              Operating
                                                                                        Leases                 Leases
                                                                                        ------                 ------

<S>                                                                                   <C>                   <C>
              2000 ......................................................             $  9,375              $ 182,411
              2001 ......................................................                9,375                135,313
              2002 ......................................................                9,375                 80,412
              2003 ......................................................                  774                  1,024
                                                                                      -------------------------------
              Total minimum lease payments ..............................               28,899              $ 399,160
                                                                                                            =========
              Less amount representing interest .........................               (5,692)
                                                                                      ---------
              Present value of net
              minimum lease payments
                                                                                        23,207
              Less current maturities of capital
              lease obligations
                                                                                        (6,435)
                                                                                      =========
              Capital lease obligations .................................             $ 16,772
                                                                                      =========
</TABLE>

            Rent  expense  relating  to  operating  leases  for the years  ended
December  31,  1999,  1998  and  1997  was  $174,332,  $143,126,  and  $190,584,
respectively.


5.          STOCKHOLDERS' EQUITY

            Preferred   Stock

            In February 1997,  35,700 shares of Series A Cumulative  Convertible
Preferred  Stock ("Series A Preferred  Stock") were issued pursuant to a private
placement.  Holders  of  Series A  Preferred  Stock had the  right,  exercisable
commencing  May 29, 1997 and ending  February  28,  1999,  to convert  shares of
Series A Preferred  Stock into shares of Common  Stock.  The number of shares of
Common Stock issuable upon conversion of Series A Preferred Stock was determined
by reference  to the lesser of (i) $3.31875 and (ii) 85% of the "current  market
price" per share of Common Stock,  where  "current  market  price"  means,  with
certain  exceptions,  the average of the closing bid prices of Common  Stock for
the 10  consecutive  trading  days  ending  the  last  trading  day  before  the
applicable  conversion  date.  Each share of Series A Preferred  Stock  earned a
cumulative  dividend payable in shares of Common Stock at a rate per share equal
to 7.0% of the original $100 purchase  price per share of the Series A Preferred
Stock payable at the time of conversion.  As of December 31, 1997, 25,000 shares
of Series A  Preferred  Stock were  outstanding.  Between  August  26,  1997 and
December  31,  1997,  10,700  shares of Series A Preferred  Stock,  plus related
accrued  dividends,  were converted into 44,769 shares of Common Stock. In 1998,
the remaining  balance of the Company's  outstanding  Series A Preferred  Stock,
plus related dividends payable, were converted to Common Stock, resulting in the
issuance of 4,075,797 shares of Common Stock.

            In April  1998,  the  Company  issued  1,250  shares of its Series B
Cumulative  Convertible  Redeemable Preferred Stock ("Series B Preferred Stock")
in a  private  placement  for an  aggregate  purchase  price of  $1,250,000.  In
addition,  the holder of Series B Preferred Stock was issued warrants to acquire
300,000 shares of Common Stock at any time up until and including April 15, 2001
for a price of $1.00 per share.  Each share of Series B Preferred Stock earned a
cumulative dividend payable at a rate per share equal to 6.0% per annum. On July
31, 1998, the Company  redeemed all of the Series B Preferred  Stock and accrued
dividends for cash.

            In June 1998,  the Company issued  4,571,428  shares of Common Stock
and 11,500 shares of Series C Cumulative  Convertible Preferred Stock ("Series C
Preferred Stock"),  convertible into shares of Common Stock of the Company or of
its wholly owned  subsidiary,  SPD, for $17.5  million  pursuant to a definitive
agreement   with  an  affiliate  of  Elan   Corporation,   plc  ("Elan"),   Elan
International  Services,  Ltd.  ("Elan  International").  The Series C Preferred
Stock earns cumulative  dividends  payable in shares of Series C Preferred Stock
at an  annual  rate of 7.0% on the  stated  value of each  outstanding  share of
Series C Preferred Stock on the dividend date. Elan  International also received
a warrant to purchase 990,000 shares of Common Stock of the Company  exercisable
from  December 31, 1998 through  January 30, 2005 at an exercise  price of $2.00
per share. Under the terms of the agreement,  the Company, through SPD, acquired
certain  pulmonary  delivery  technologies  for the sum of $12.5 million in cash
(see Note 8).  All of the  outstanding  Common  Stock of SPD is  pledged to Elan
during the term of the agreement.  Subject to certain  conditions and the making
of certain payments to the Company, Elan International has the option to acquire
all or a portion of the  outstanding  stock of SPD. The net book value of SPD is
$0.2  million as of December  31,  1999.  The  Company  issued  stock  dividends
totaling 866 and 414 shares of Series C Preferred  Stock and cash  dividends for
fractional shares of $2,278 and $1,112 for the years ended December 31, 1999 and
1998, respectively.


                                       13
<PAGE>

            In October 1999, pursuant to a definitive agreement, the Company and
Elan  International  formed a new joint venture to develop  certain  respiratory
steroid products.  Under the terms of the agreement,  the Company issued to Elan
International  12,015  shares of Series D  Cumulative  Convertible  Exchangeable
Preferred Stock ("Series D Preferred Stock"),  convertible into shares of Common
Stock of the Company at $4.86 per Common Share or exchangeable for an additional
30.1%  ownership  interest in the new joint venture,  for $12.015  million.  The
Series D Preferred Stock earns cumulative  dividends payable in shares of Series
D  Preferred  Stock  at an  annual  rate  of 7.0% on the  stated  value  of each
outstanding  share  of  Series D  Preferred  Stock on the  dividend  date.  Elan
International  has also  committed to purchase,  on a drawdown  basis,  up to an
additional  $4.0  million  of the  Company's  Series  E  Cumulative  Convertible
Preferred Stock ("Series E Preferred Stock"),  convertible into shares of Common
Stock of the Company at $3.89 per Common  Share.  The Series E  Preferred  Stock
will be  utilized  by the  Company to fund its  portion  of the joint  venture's
operating and development  costs.  The Series E Preferred Stock earns cumulative
dividends  payable in shares of Series E  Preferred  Stock at an annual  rate of
9.0% on the stated value of each  outstanding  share of Series E Preferred Stock
on the  dividend  date.  In  addition to the above,  the Company  issued to Elan
International  5,000 shares of Series F Convertible  Non-Exchangeable  Preferred
Stock ("Series F Preferred  Stock"),  convertible into shares of Common Stock of
the Company at $3.40 per Common  Share,  for $5.0  million.  The proceeds of the
Series F Preferred  Stock will be utilized by  Sheffield  for its own  operating
purposes. The holders of the Series F Preferred Stock may be entitled to receive
dividends on a pari passu basis with the holders of Common Stock. As part of the
transaction,  Elan  International  also  received a warrant to purchase  150,000
shares of Common  Stock of the Company at an  exercise  price of $6.00 per share
(see Note 8).

            Common Stock

            In April  1997,  Camelot  merged  with and into CP  Pharmaceuticals,
Inc., a newly formed wholly owned  subsidiary of the Company.  The principals of
Camelot at the time of the merger were Loren G.  Peterson,  Carl F. Siekmann and
David A. Byron.  Pursuant to the related  agreement and plan of merger,  Messrs.
Peterson,  Siekmann  and Byron each  received  200,000  shares of Common  Stock.
Following the consummation of the merger, each of Messrs. Peterson, Siekmann and
Byron entered into  employment  agreements  with  Sheffield  and received  stock
options  providing each individual the right to purchase up to 400,000 shares of
Common Stock (see Note 2).

            During 1998, the Company entered into an agreement with Zambon for a
sublicense to the Company's  proprietary  MSI drug delivery system (see Note 8).
Pursuant to an option agreement dated April 15, 1998, the Company issued 800,000
shares of Common  Stock for  $650,000  in cash.  On June 15,  1998,  the Company
entered  into  the  definitive  agreement,  resulting  in  the  issuance  of  an
additional 1,846,153 shares of Common Stock for $1.5 million.

            In June 1999, the stockholders of Sheffield approved an amendment to
the Company's  Certificate of  Incorporation to increase the number of shares of
Common Stock that the Company is authorized  to issue from 50 million  shares to
60 million shares.

            Convertible Subordinated Debentures

            In September  1997, the Company  consummated a private  placement of
$1.75 million principal amount of its 6.0% Convertible  Subordinated  Debentures
("Debentures")  due  September 22, 2000.  In addition,  the Company  granted the
holder of the  Debenture  warrants to purchase  140,000  shares of the Company's
Common  Stock at $2.80 per share.  A value of  $115,500  was  assigned  to these
warrants.  The  Debentures  are  convertible  at the option of the  holder  from
December 22, 1997 until maturity, subject to certain limitations,  into a number
of shares of Common  Stock equal to (i) the  principal  amount of the  Debenture
being so  converted  divided by (ii) 75% of the market price of the Common Stock
as of the date of  conversion.  For purposes of any  conversion  of  Debentures,
"market price"  generally  means the average of the closing prices of the Common
Stock for the five trading day period proceeding the applicable conversion date.
The Debentures also earn interest at a rate of 6.0% per annum that is payable by
the Company, at the option of the holder and subject to certain  conditions,  in
shares of its Common Stock at a conversion  rate generally  equal to the average
of the closing prices of the Common Stock for the ten trading days preceding the
applicable  interest payment date. During 1998, the Debentures were converted to
Common Stock resulting in the issuance of 2,925,941 shares of Common Stock.

                                       14
<PAGE>

6.          STOCK OPTIONS AND WARRANTS

Stock Option Plan - The 1993 Stock  Option Plan (the "Option  Plan") was adopted
by the Board of Directors in August 1992 and approved by the stockholders at the
annual meeting in December 1993. An amendment to the Option Plan  increasing the
number of shares  of Common  Stock  available  for  issuance  thereunder  from 3
million shares to 4 million  shares  received  stockholder  approval on July 15,
1998. The Option Plan permits the grant to employees and officers of the Company
of both incentive stock options and non-statutory stock options. The Option Plan
is  administered  by the Board of Directors  or a committee of the Board,  which
determines  the persons to whom options  will be granted and the terms  thereof,
including the exercise price,  the number of shares subject to each option,  and
the  exercisability of each option. The exercise price of all options for Common
Stock  granted  under the Option  Plan must be at least equal to the fair market
value on the date of grant in the case of incentive  stock  options,  and 85% of
the fair market  value on the date of grant in the case of  non-statutory  stock
options.  Options  generally expire five to ten years from the date of grant and
vest either over time or upon the Company's  Common Stock attaining a set market
price for a certain  number of trading  days.  As of December 31, 1999,  options
available for grant under the Option Plan are 1,528,600.

Restricted Stock Plan - The 1993 Restricted  Stock Plan (the "Restricted  Plan")
was  adopted  by the Board of  Directors  in  August  1992 and  approved  by the
stockholders  at the annual  meeting  in  December  1993.  The  Restricted  Plan
authorized  the  grant of a maximum  of  150,000  shares of Common  Stock to key
employees,  consultants,  researchers  and members of the  Company's  Scientific
Advisory Board. The Restricted Plan is administered by the Board of Directors or
a committee  of the Board,  which  determines  the person to whom shares will be
granted and the terms of such share  grants.  As of December 31, 1999, no shares
have been granted under the Restricted Plan.

Directors  Stock  Option  Plan - The  1996  Directors  Stock  Option  Plan  (the
"Directors  Plan") was  adopted by the Board of  Directors  and  approved by the
stockholders on June 20, 1996.  Under the Directors Plan, the maximum  aggregate
number of shares  which may be  optioned  and sold is  500,000  shares of Common
Stock. The Directors Plan initially  granted each eligible director 15,000 stock
options.  To the extent that shares remain  available,  any new directors  shall
receive the grant of an option to  purchase  25,000  shares.  To the extent that
shares  remain  available  under the  Directors  Plan, on January 1 of each year
commencing January 1, 1997, each eligible director shall be granted an option to
purchase  15,000  shares.  The exercise  price of all options  granted under the
Directors Plan shall be the fair market value at the date of the grant.  Options
generally  expire five years from the date of grant.  As of December  31,  1999,
there are 260,000 options available for grant under the Directors Plan.

            SFAS No. 123 requires pro forma information regarding net income and
earnings per share as if the Company has accounted for its stock options granted
subsequent  to December 31,  1994,  under the fair value method of SFAS No. 123.
The fair value of these stock  options is estimated at the date of grant using a
Black-Scholes   option  pricing  model  with  the  following   weighted  average
assumptions for 1999, 1998, and 1997, risk-free interest rate ranging from 4.39%
to 6.23%; expected volatility ranging from 0.526 and 0.694; expected option life
of one to ten years from vesting and an expected dividend yield of 0.0%.

            For purposes of pro forma  disclosures,  the estimated fair value of
the stock options is amortized to expense over the options' vesting period.  The
Company's pro forma information is as follows:

<TABLE>
<CAPTION>
                                                                 1999           1998          1997
                                                                 ----           ----          ----
<S>                                                            <C>           <C>           <C>
            Pro forma net loss............................     $17,807,124   $18,983,921   $9,500,810
            Pro forma basic net loss per share of
            common stock..................................            $.65          $.87         $.79
</TABLE>


                                       15
<PAGE>


  Transactions involving stock options and warrants are summarized as follows:
<TABLE>
<CAPTION>

                                                                      Year Ended December 31,
                                      -----------------------------------------------------------------------------------------
                                                    1999                         1998                          1997
                                      -----------------------------------------------------------------------------------------
                                                          Weighted                                                     Weighted
                                                          Average                                                      Average
                                        Common Stock      Exercise   Common Stock       Exercise   Common Stock        Exercise
                                      Options/Warrants      Price   Options/Warrants      Price   Options/Warrants      Price
                                      ----------------      -----   ----------------      -----   ----------------      -----
<S>                                      <C>              <C>          <C>              <C>          <C>              <C>
Outstanding, January 1 ............      7,910,836        $   2.55     4,781,290        $   3.65     3,033,755        $   4.49
                  Granted .........        555,040            2.97     3,162,910            1.81     3,683,039            3.92
                  Expired .........        315,422            3.92       283,504            4.48       327,500            3.18
                  Exercised .......        367,500            1.07          --           --               --           --
                  Canceled ........           --           --            180,500            5.64     1,608,004            4.11
                  Revalued(1) .....           --           --            430,640         --               --           --
                                         ---------        --------     ---------        --------     ---------        --------
Outstanding, December 31 ..........      7,782,954        $   2.59     7,910,836        $   2.55     4,781,290        $   3.65
                                         =========        ========     =========        ========     =========        ========
Exercisable at end of year ........      6,358,554        $   2.51     5,028,336        $   2.71     2,900,290        $   3.88
                                         =========        ========     =========        ========     =========        ========
</TABLE>

                  (1) Certain warrants issued by the Company during 1995 contain
antidilutive provisions.  These warrants total 615,325, and have exercise prices
ranging from $4.00 to $5.00 per share.  Pursuant to the antidilutive  provisions
of the  warrants,  the common  shares to be purchased  under the  warrants  were
increased to 1,045,965 and the related  exercise prices were adjusted to a range
of $2.44 to $2.81 per share.

During the period January 1, 1997 through December 31, 1999, the exercise prices
and weighted  average fair value of options and warrants  granted by the Company
were as follows:
             Number of Options/                      Weighted Average
     Year        Warrants            Exercise Price     Fair Value
     ----        --------            --------------     ----------
     1997       3,683,039            $1.50 - 6.00 .     $   4.05
     1998       3,162,910            $1.00 - 3.69 .     $   0.99
     1999         555,040            $0.82 - 6.00 .     $   1.34


At December 31, 1999,  outstanding  warrants to purchase  the  Company's  Common
Stock are summarized as follows:

<TABLE>
<CAPTION>

    Range of              Outstanding Warrants      Weighted Average Remaining
 Exercise Prices          at December 31, 1999       Contractual Life (Years)           Weighted Average Exercise Price
 ---------------          --------------------       ------------------------           -------------------------------
<S>                            <C>                            <C>                                    <C>
  $0.73 - $2.00                1,737,410                      3.98                                   $1.69
  $2.25 - $3.00                1,520,605                       .86                                   $2.58
  $3.25 - $6.50                  621,539                      3.24                                   $4.16
                              ---------
                               3,879,554                      2.64                                   $2.43

</TABLE>

            At December 31, 1999,  outstanding options to purchase the Company's
Common Stock are summarized as follows:

<TABLE>
<CAPTION>
    Range of               Outstanding Options        Weighted Average Remaining
 Exercise Prices           at December 31, 1999       Contractual Life (Years)            Weighted Average Exercise Price
 ---------------           --------------------       ---------------------------         -------------------------------
<S>                             <C>                            <C>                                     <C>
  $1.24 - $2.75                 2,867,000                      5.63                                    $2.34
  $3.00 - $4.00                   686,400                      3.68                                    $3.51
  $4.06 - $6.25                   350,000                      1.81                                    $4.59
                               ---------
                                3,903,400                      4.94                                    $2.75
                               =========
</TABLE>


7.          CONVERTIBLE PROMISSORY NOTE

            As part  of the  1998  agreement  with  Elan,  Elan  agreed  to make
available to the Company a  Convertible  Promissory  Note ("Note") that provides
the  Company  the right to  borrow up to $2.0  million,  subject  to  satisfying
certain  conditions.  No more than  $500,000  may be drawn under the Note in any
calendar  quarter  and at least  one-half of the  proceeds  must be used to fund
SPD's  development  activities.  The principal  outstanding under the Note bears
interest at the prime rate plus 1% and, if not previously converted,  matures on
June 30, 2005.  Prior to repayment,  Elan has the right to convert all principal
and accrued  interest into shares of the Company's  Common Stock at a conversion
price of $1.75 per share.  As of December 31, 1999,  the  outstanding  principal
balance of the Note was $2.0 million.

                                       16

<PAGE>


8.          RESEARCH AND DEVELOPMENT AGREEMENTS

            Pulmonary Delivery Technologies

            In March 1997, the Company entered into exclusive supply and license
agreements  for  the  worldwide  rights  to  the  MSI  system  with  Siemens  AG
("Siemens"). The agreements call for Siemens to be the exclusive supplier of the
MSI drug delivery  system.  The Company paid  licensing  fees of $1.1 million in
both April 1997 and 1998, to Siemens pursuant to these agreements.

            On June 15, 1998, the Company  entered into an agreement with Zambon
for a sublicense  to the Company's MSI system.  Under this  transaction,  Zambon
received an  exclusive  world-wide  marketing  and  development  sublicense  for
respiratory products to be delivered by the MSI system including four drugs that
had been under  development  by the  Company.  The  Company  maintained  certain
co-promotion  rights in the U.S. for respiratory  drugs as well as the worldwide
marketing and development rights for all applications of the MSI delivery system
outside the  respiratory  products.  The Company was paid an up-front fee in the
form of an equity investment and will receive milestone  payments upon marketing
approval for each of the four products and royalties upon commercialization (see
Note 3).

            On June 30,  1998,  the Company  issued  certain  equity  securities
pursuant  to an  agreement  with  Elan  (see  Note 5).  Under  the  terms of the
agreement,  the Company,  through its wholly  owned  subsidiary,  SPD,  acquired
certain pulmonary delivery  technologies from Elan for $12.5 million in cash. On
July 15, 1998, SPD acquired from Aeroquip-Vickers, Inc. a new generation metered
dose  inhaler  system  called the Aerosol  Drug  Delivery  System  ("ADDS")  for
$825,000.  The  payments for these  technologies  were  expensed  during 1998 as
acquired  R&D  in-process  technology  since the  technologies  acquired had not
demonstrated  technological  feasibility and had no alternative future uses. SPD
holds the rights to all systemic  disease  applications  of the ADDS  technology
while  Sheffield   retains  the  rights  to  develop  the  respiratory   disease
applications  of ADDS. The Company is responsible  for the  development of these
technologies.  Pursuant to its agreement  with Elan,  at December 31, 1999,  the
Company was  committed  to fund  $98,000 of  additional  costs  related to SPD's
systemic development program.

            On October 18, 1999, the Company  issued  certain equity  securities
pursuant  to an  agreement  with  Elan  (see  Note 5).  Under  the  terms of the
agreement,  the Company,  through its majority owned  subsidiary,  RSD, licensed
certain  pulmonary  NanoCrystal(TM)  technology  from Elan for $15.0  million in
cash.  This payment was expensed as acquired R&D  in-process  technology  as the
license agreement  restricts the Company's use of the NanoCrystal  technology to
certain   respiratory   steroid   products  that  are  currently   research  and
development.  The  subsidiary  is  responsible  for the  development  of certain
respiratory  steroid products.  Pursuant to its agreement with Elan, at December
31, 1999,  the Company was committed to fund $4.0 million to the  subsidiary for
the development of these products.

            Early Stage Technologies

            The  Company  also is party  to a number  of  license  and  research
agreements,  primarily with universities,  hospitals,  and research  facilities,
relating to early stage medical research  projects that focus on the development
of new  compounds  for the  treatment  of  cancer,  acquired  immune  deficiency
syndrome  and other  diseases.  As part of the  Company's  focus on later  stage
opportunities,  the Company is seeking to out-license these projects.  There can
be no assurance  that the Company will  receive  license fees or other  payments
related to these technologies. The Company believes these early stage technology
license and research  agreements  will have no material  impact on the financial
position of the  Company.  For the year ended  December  31,  1999,  the Company
funded approximately $2,000 related to these projects.

            On  November  20,  1997,  the  Company  entered  into  a  sublicense
agreement with Lorus Therapeutics, Inc. (formerly Imutec Pharma Inc.) ("Lorus").
The agreement licenses rights to a series of clotrimazole-related  compounds for
the  treatment  of cancer,  Kaposi's  sarcoma and actinic  keratosis  to a newly
formed company,  NuChem  Pharmaceuticals,  Inc. ("NuChem").  In exchange,  Lorus
agreed  to  manage  and fund the  remaining  development  program.  The  Company
received  $500,000 in cash upon signing the  agreement,  which was recognized as
revenue during the year ended December 31, 1997, and received  583,188 shares of
Lorus stock valued at $350,000  which was  recognized as revenue during the year
ended  December  31,  1998.  In  addition,  the  Company is  entitled to receive
additional payments upon the completion of certain milestones in the development
of these compounds and retains a 20 percent ownership interest in NuChem.


                                       17
<PAGE>

9.          RELATED PARTY TRANSACTIONS

            During 1998, three executive  officers provided funds for use by the
Company comprised of short-term notes having a 7.0% annual interest rate, unpaid
salaries  and  unreimbursed  expenses.  The largest  amount  outstanding  to the
executive  officers  during 1998 was $241,740.  All amounts under the short-term
notes were repaid in 1998.

            During  1998,  certain  stockholders  provided  funds for use by the
Company comprised of short-term notes totaling $150,000, bearing interest at the
rate of 7.0% per annum.  On September 8, 1998, the Company  repaid  principal of
$50,000 plus accrued interest. The remaining balance of the short-term notes and
accrued interest was repaid on May 12, 1999.

10.           INCOME TAXES

            At December 31, 1999,  the Company had available net operating  loss
carryforwards  for regular  federal income tax purposes of  approximately  $39.4
million,  of which $27.5  million will expire  between 2007 and 2012,  and $11.9
million will expire  between 2018 and 2019, if not utilized.  Utilization of the
Company's  net  operating  loss  carryforwards  may  be  subject  to  an  annual
limitation as a result of the "changes in ownership"  provisions of the Internal
Revenue Code Section 382.  Future  changes in ownership  may limit net operating
loss carryforwards generated in the year of change.

            Deferred   income  taxes   reflect  the  net  effects  of  temporary
differences between the carrying amounts of assets and liabilities for financial
reporting  purposes  and the amounts used for income tax  purposes.  Significant
components  of the  Company's  net  deferred  tax asset at December 31, 1999 and
1998, which are considered noncurrent, are as follows:

<TABLE>
<CAPTION>
            Deferred Tax Assets                                    1999                       1998
                                                                   ----                       ----

<S>                                                          <C>                          <C>
Net operating loss carryforwards .................           $ 14,957,000                 $ 12,600,000
Costs capitalized for tax purposes ...............             22,027,000                   14,391,000
Deferred tax asset valuation allowance ...........            (36,984,000)                 (26,991,000)
                                                             ------------                 ------------

Net deferred tax asset ...........................           $       --                   $       --
                                                             ============                 ============
</TABLE>

            The  Company  has  recorded  a  valuation  allowance  for the entire
deferred tax asset due to the uncertainty of its realization.  The net change in
the total  valuation  allowance  for the year  ended  December  31,  1999 was an
increase  of  $9,993,000.  As a  result  of  differences  between  book  and tax
requirements for writing off intangible assets acquired,  such as in-process R &
D technology,  the Company has  capitalized  the in-process R & D technology for
tax purposes.  The deferred tax asset will be amortized into taxable income over
a useful life of 15 years.

                                       18
<PAGE>
                         Report of Independent Auditors



The Board of Directors and Stockholders
Sheffield Pharmaceuticals, Inc.

We have  audited  the  accompanying  consolidated  balance  sheets of  Sheffield
Pharmaceuticals,  Inc. and subsidiaries (a development  stage  enterprise) as of
December  31,  1999  and  1998,  and  the  related  consolidated  statements  of
operations,  stockholders' equity, and cash flows for each of the three years in
the  period  ended  December  31,  1999  and for the  period  October  17,  1986
(inception)  through  December  31, 1999.  These  financial  statements  are the
responsibility of the Company's management.  Our responsibility is to express an
opinion on these financial statements based on our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States. Those standards require that we plan and perform the audit
to obtain reasonable  assurance about whether the financial  statements are free
of material misstatement. An audit includes examining, on a test basis, evidence
supporting  the amounts and  disclosures in the financial  statements.  An audit
also includes assessing the accounting principles used and significant estimates
made by  management,  as well as  evaluating  the  overall  financial  statement
presentation.  We believe  that our audits  provide a  reasonable  basis for our
opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all  material  respects,   the  consolidated  financial  position  of  Sheffield
Pharmaceuticals,  Inc. and  subsidiaries  at December 31, 1999 and 1998, and the
consolidated  results of their  operations  and their cash flows for each of the
three years in the period  ended  December  31, 1999 and the period from October
17, 1986  (inception)  through  December 31, 1999, in conformity with accounting
principles generally accepted in the United States.


/s/ Ernst & Young LLP
St. Louis, Missouri
March 1, 2000


                                                                      Exhibit 21



                 SUBSIDIARIES OF SHEFFIELD PHARMACEUTICALS, INC.

                                                                 Jurisdiction of
   Name                                                          Incorporation
   ----                                                          ---------------
1. Ion Pharmaceuticals, Inc. (100% owned subsidiary)             Delaware

2. CP Pharmaceuticals, Inc. (100% owned subsidiary)              Delaware

3. Systemic Pulmonary Delivery, Ltd. (100% owned subsidiary)     Bermuda

4. Respiratory Steroid Delivery, Ltd. (80.1% owned subsidiary)   Bermuda




                        Consent of Independent Auditors

We consent to the  incorporation  by  reference in the  Registration  Statements
(Form S-3 No. 33-95732,  Form S-3 No.  333-27753 and Form S-3 No.  333-38327) of
Sheffield  Pharmaceuticals,  Inc.  and  in  the  related  Prospectuses,  in  the
Registration  Statement  (Form S-8 No.  33-95262)  pertaining  to the 1993 Stock
Option Plan of Sheffield  Pharmaceuticals,  Inc., the 1993 Restricted Stock Plan
of Sheffield Pharmaceuticals,  Inc. and options granted to directors,  officers,
employees,  consultants  and advisors of the Company  pursuant to other employee
benefit  plans  of  Sheffield  Pharmaceuticals,  Inc.  and in  the  Registration
Statement (Form S-8 No.  333-14867)  pertaining to the 1993 Stock Option Plan of
Sheffield  Pharmaceuticals,  Inc.,  the  1996  Directors  Stock  Option  Plan of
Sheffield  Pharmaceuticals,  Inc.,  the  1996  Directors  Stock  Option  Plan of
Sheffield  Pharmaceuticals,  Inc. and options  granted to  directors,  officers,
employees,  consultants  and advisors of the Company  pursuant to other employee
benefit  plans of Sheffield  Pharmaceuticals,  Inc. of our report dated March 1,
2000,  with  respect  to the  consolidated  financial  statements  of  Sheffield
Pharmaceuticals,  Inc. and subsidiaries  incorporated by reference in its Annual
Report (Form 10-K) for the year ended December 31, 1999.




/s/ Ernst & Young LLP
St. Louis, Missouri
March 23, 2000

<TABLE> <S> <C>

<ARTICLE>                           5
<LEGEND>
This  schedule  contains  summary  financial   information  extracted  from  the
condensed  financial  statements  for the year ended  December  31,  1999 and is
qualified in its entirety by reference to such statements.
</LEGEND>

<S>                                 <C>
<PERIOD-TYPE>                                                      12-MOS
<FISCAL-YEAR-END>                                             DEC-31-1999
<PERIOD-END>                                                  DEC-31-1999
<CASH>                                                          3,874,437
<SECURITIES>                                                      519,387
<RECEIVABLES>                                                           0
<ALLOWANCES>                                                            0
<INVENTORY>                                                             0
<CURRENT-ASSETS>                                                4,539,061
<PP&E>                                                            601,421
<DEPRECIATION>                                                    311,752
<TOTAL-ASSETS>                                                  5,048,655
<CURRENT-LIABILITIES>                                           1,194,887
<BONDS>                                                                 0
                                                   0
                                                           298
<COMMON>                                                          273,088
<OTHER-SE>                                                        397,687
<TOTAL-LIABILITY-AND-EQUITY>                                    5,048,655
<SALES>                                                                 0
<TOTAL-REVENUES>                                                  399,378
<CGS>                                                                   0
<TOTAL-COSTS>                                                           0
<OTHER-EXPENSES>                                               20,698,870
<LOSS-PROVISION>                                                        0
<INTEREST-EXPENSE>                                                162,237
<INCOME-PRETAX>                                              (17,384,788)
<INCOME-TAX>                                                            0
<INCOME-CONTINUING>                                          (17,384,788)
<DISCONTINUED>                                                          0
<EXTRAORDINARY>                                                         0
<CHANGES>                                                               0
<NET-INCOME>                                                 (17,384,788)
<EPS-BASIC>                                                       (.64)
<EPS-DILUTED>                                                       (.64)


</TABLE>


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