As filed with the Securities and Exchange Commission on September 15, 1999
                                             Registration No. 333-
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      Under
                           The Securities Act of 1933

                          NEUROCRINE BIOSCIENCES, INC.
               (Exact name of Company as specified in its charter)

            Delaware                            33-0525145
     (State of incorporation)        (I.R.S. Employer Identification No.)

                           10555 Science Center Drive
                           San Diego, California 92121
     (Address, including zip code, of Company's principal executive offices)


                        AMENDED 1992 INCENTIVE STOCK PLAN
                            (Full title of the plan)


                                  GARY A. LYONS
                       President, Chief Executive Officer
                                  and Director
                           10555 Science Center Drive
                           San Diego, California 92121
                                 (619) 658-7600

(Name, address, and telephone number, including area code, of agent for service)

                                   Copies to:
                            Michael W. Sturrock, Esq.
                                Latham & Watkins
                        633 West Fifth Street, Suite 4000
                          Los Angeles, California 90071
                                 (213) 485-1234


                         CALCULATION OF REGISTRATION FEE
________________________________________________________________________________
                                          Proposed     Proposed
                                          Maximum      Maximum
Title of Each Class    Amount of Shares   Offering     Aggregate     Amount of
 of Securities to          to be            Price      Offering    Registration
  be Registered         Registered(1)    Per Share(2)  Price(2)        Fee(3)
________________________________________________________________________________
Common Stock
  $0.001 par value         600,000        $ 4.78125   $ 2,868,750    $ 797.51
____________________
(1)    The Amended 1992 Incentive Plan (the "Plan") authorizes the issuance of a
       maximum of 5,300,000  shares of common stock of  Neurocrine  Biosciences,
       Inc. (the  "Company")  plus  substitutions  or  adjustments  to shares to
       account  for any  change  in  corporate  capitalization,  such as a stock
       split, any merger, consolidation,  recapitalization or other distribution
       of  stock or  property.  The  Company  previously  registered  3,300,000,
       800,000 and 600,000  shares of common stock under the Plan on October 21,
       1996, July 22, 1997 and June 26, 1998, respectively.
(2)    Estimated  solely for purposes of computing the  registration fee for the
       600,000 additional shares registered  herewith.  Pursuant to Rule 457(c),
       the proposed  Maximum  Offering  Price Per Share is based on the high and
       low  trading  prices of the  Company's  common  stock as  reported on the
       Nasdaq National Market System on September 10, 1999.
(3)    Relates solely to the 600,000 additional shares registered herewith.

================================================================================



         On May 21, 1999, the  stockholders of Neurocrine  Biosciences,  Inc., a
Delaware  corporation  (the  "Company"),  approved an amendment to the Company's
Amended 1992 Incentive  Stock Plan (the "Plan") to increase the number of shares
of common stock, par value $0.001 per share, of the Company (the "Common Stock")
reserved for issuance thereunder from 4,700,000 to 5,300,000.  This Registration
Statement  on Form S-8 (this  "Registration  Statement")  is being  filed by the
Company to increase  the number of shares of Common Stock  registered  under the
Plan to 5,300,000 shares. The Company  previously filed Registration  Statements
on Form S-8 on October  21, 1996 (File No.  333-14589),  July 22, 1997 (File no.
333-31791) and June 26, 1998 (File No. 333-57875) to register 3,300,000, 800,000
and  600,000  shares  under  the  Plan,  respectively.   The  contents  of  such
Registration Statements are incorporated herein by reference.


                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3.       Incorporation of Documents by Reference.

              The following  documents  filed with the  Securities  and Exchange
Commission (the  "Commission") by the Company,  are incorporated by reference in
this Registration Statement.

(a) The Company's  Annual Report on Form 10-K for the fiscal year ended December
31, 1998;  (b) The  Company's  Quarterly  Report on Form 10-Q for the  quarterly
period ended March 31, 1999; and (c) The Company's Quarterly Report on Form 10-Q
for the quarterly period ended June 30, 1999.

              All  documents  filed by the Company  pursuant to Sections  13(a),
13(c),  14 and 15(d) of the  Securities  Exchange  Act of 1934,  as amended (the
"Exchange Act"), after the date of this Registration  Statement and prior to the
filing of a post-effective amendment which indicates that all securities offered
have been sold or which  deregisters all securities then remaining  unsold,  are
incorporated by reference in this  Registration  Statement and are a part hereof
from the date of filing such  documents.  Any statement  contained in a document
incorporated or deemed to be incorporated by reference herein shall be deemed to
be modified or  superseded  for purposes of this  Registration  Statement to the
extent  that a statement  contained  herein or in any other  subsequently  filed
document  which  also is or is deemed to be  incorporated  by  reference  herein
modifies  or  supersedes  such  statement.  Any such  statement  so  modified or
superseded  shall  not be  deemed,  except  as so  modified  or  superseded,  to
constitute a part of this Registration Statement.

Item 4.       Description of Securities.

                  Not required to be filed with this Registration Statement.

Item 5.       Interests of Named Experts and Counsel.

                  Not applicable.


                                   Page II-1


Item 6.       Indemnification of Directors and Officers.

              Section 145 of the  Delaware  General  Corporation  Law  generally
allows  the  Company to  indemnify  directors  and  officers  for all  expenses,
judgments, fines and amounts in settlement actually paid and reasonably incurred
in connection with any proceedings so long as such party acted in good faith and
in a manner  reasonably  believed to be in or not opposed to the Company's  best
interests  and, with respect to any criminal  proceedings,  if such party had no
reasonable  cause to believe his or her conduct to be unlawful.  Indemnification
may only be made by the Company if the applicable  standard of conduct set forth
in Section 145 has been met by the indemnified  party upon a determination  made
(i) by the Board of Directors by a majority  vote of the  directors  who are not
parties to such  proceedings,  even though less than a quorum,  or (ii) if there
are no such  directors,  or if such directors so direct,  by  independent  legal
counsel in a written opinion, or (iii) by the stockholders.

              Article VII of the Company's  Restated  Articles of  Incorporation
and Article VI,  Sections 6.1, 6.2 and 6.3 of the Company's  Bylaws  provide for
indemnification  of its directors and officers,  and permit  indemnification  of
employees  and other  agents to the maximum  extent  permitted  by the  Delaware
General   Corporation   Law.  In   addition,   the  Company  has  entered   into
indemnification agreements with its officers and directors.

Item 7.       Exemption From Registration Claimed.

              Not applicable.

Item 8.       Exhibits.

              The  following  is a list  of  exhibits  filed  as  part  of  this
Registration Statement, which are incorporated herein:

Exhibit
Number          Document
- -------         ----------------------------------------------------------------
 4.1            Form of Lock-Up Agreement(1).

 4.2            Form of Common Stock Certificate(1).

 4.3            Form of warrant issued to existing warrant holders(1).

 4.4            Form of Series A warrant issued in connection with the execution
                by the Company of the Unit Purchase Agreement, dated January 19,
                1996, by and between the Company,  Neuroscience Pharma, Inc. and
                the investors signatory thereto(1).

 4.5            New Registration  Rights  Agreement, dated March 29, 1996 by and
                among the Company and the investors signatory thereto(1).

 4.6            Letter of Intent  between  Northwest  Neurologic,  Inc.  and the
                Company dated February 27, 1998(2).

 5.1            Opinion of Latham & Watkins.

10.1            Amended 1992 Incentive Stock Plan.

23.1            Consent of Ernst & Young LLP, Independent Auditors.

23.2            Consent of Latham & Watkins (contained in Exhibit 5.1).

24.1            Power of Attorney (see page II-5).
- ---------------------
               (1)      Incorporated by reference to the Company's  Registration
                        Statement filed on April 3, 1996 on Form S-1, as amended
                        (File No. 333-03172).
               (2)      Incorporated  by  reference to the  Company's  Report on
                        Form 8-K filed on March 13, 1998.

                                   Page II-2


Item 9.       Undertakings.

              (a)     The undersigned Company hereby undertakes:

                      (1) To file,  during any  period in which  offers or sales
are being made, a  post-effective  amendment to this  registration  statement to
include any material  information  with respect to the plan of distribution  not
previously  disclosed in the  registration  statement or any material  change to
such information in the registration statement.

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

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

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

             (c) Insofar as  indemnification  for liabilities  arising under the
Securities Act may be permitted to directors,  officers and controlling  persons
of the Company  pursuant to the Delaware  General  Corporation Law, the Restated
Articles  of  Incorporation  or  the  Bylaws  of  the  Company,  Indemnification
Agreements  entered into between the Company and its officers and directors,  or
otherwise,  the Company has been advised  that in the opinion of the  Securities
and  Exchange  Commission  such  indemnification  is  against  public  policy as
expressed in the Securities Act and is, therefore,  unenforceable.  In the event
that a claim  for  indemnification  against  such  liabilities  (other  than the
payment by the  Company of expenses  incurred or paid by a director,  officer or
controlling person of the Company in the successful defense of any action,  suit
or proceeding) is asserted by such  director,  officer or controlling  person in
connection with the securities  being  registered  hereunder,  the Company will,
unless in the opinion of its counsel the matter has been settled by  controlling
precedent,  submit to a court of appropriate  jurisdiction  the question whether
such  indemnification  by it is  against  public  policy  as  expressed  in  the
Securities Act and will be governed by the final adjudication of such issue.


                                   Page II-3


                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, as amended,
the Company  certifies that it has  reasonable  grounds to believe that it meets
all of the  requirements  for  filing  on  Form  S-8 and has  duly  caused  this
Registration Statement to be signed on its behalf by the undersigned,  thereunto
duly authorized, in the City of San Diego, State of California, on this 15th day
of September, 1999.

                          NEUROCRINE BIOSCIENCES, INC.


                          By: /s/ Gary A. Lyons
                          Gary A. Lyons
                          President and Chief Executive Officer


                                   Page II-4


                                POWER OF ATTORNEY

         KNOW ALL  PERSONS  BY THESE  PRESENTS,  that  each  such  person  whose
signature appears below constitutes and appoints, jointly and severally, Gary A.
Lyons  and  Paul W.  Hawran  his  attorneys-in-fact,  each  with  the  power  of
substitution,  for him in any and all capacities, to sign any amendments to this
Registration Statement on Form S-8 (including post-effective amendments), and to
file the same,  with all exhibits  thereto,  and other  documents in  connection
therewith,  with the Securities and Exchange  Commission,  hereby  ratifying and
confirming  all  that  each  of said  attorneys-in-fact,  or his  substitute  or
substitutes, may do or cause to be done by virtue hereof.

         Pursuant  to the  requirements  of the  Securities  Act of  1933,  this
Registration  Statement  has  been  signed  by  the  following  persons  in  the
capacities and on the dates indicated.


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


/s/ Gary A. Lyons           President, Chief Executive        September 14, 1999
- ------------------------    Officer and Director
Gary A. Lyons               (Principal Executive Officer)


/s/ Paul W. Hawran          Chief Financial Officer           September 14, 1999
- ------------------------    (Principal Financing and
Paul W. Hawran               Accounting Officer)


/s/ Joseph A. Mollica       Chairman of the                   September 14, 1999
- ------------------------    Board of Directors
Joseph A. Mollica


/s/ Harry F. Hixson, Jr.    Director                          September 14, 1999
- ------------------------
Harry F. Hixson, Jr.


/s/ Richard F. Pops         Director                          September 14, 1999
- ------------------------
Richard F. Pops


/s/ Wylie W. Vale           Director                          September 14, 1999
- ------------------------
Wylie W. Vale


/s/ Stephen A. Sherwin      Director                          September 14, 1999
- ------------------------
Stephen A. Sherwin



                                   Page II-5




                                INDEX TO EXHIBITS

Exhibit
Number          Document
- ---------       ----------------------------------------------------------------
 4.1            Form of Lock-Up Agreement(1).

 4.2            Form of Common Stock Certificate(1).

 4.3            Form of warrant issued to existing warrant holders(1).

 4.4            Form of Series A warrant issued in connection with the execution
                by the Company of the Unit Purchase Agreement, dated January 19,
                1996, by and between the Company,  Neuroscience Pharma, Inc. and
                the investors signatory thereto(1)

 4.5            New Registration  Rights Agreement,  dated March 29, 1996 by and
                among the Company and the investors signatory thereto(1).

 4.6            Letter of Intent  between  Northwest  NeuroLogic,  Inc.  and the
                Company dated February 27, 1998(2).

 5.1            Opinion of Latham & Watkins.

10.1            Amended 1992 Incentive Stock Plan.

23.1            Consent of Ernst & Young LLP, Independent Auditors.

23.2            Consent of Latham & Watkins (contained in Exhibit 5.1).

24.1            Power of Attorney (see page II-5).
- ----------------------
   (1)             Incorporated  by  reference  to  the  Company's  Registration
                   Statement  filed on April 3,  1996 on Form  S-1,  as  amended
                   (File No. 333-03172).
   (2)             Incorporated by reference to the Company's Report on Form 8-K
                   filed on March 13, 1998.

                                   Page II-6


September 14, 1999


Neurocrine Biosciences, Inc.
10555 Science Center Drive
San Diego, California 92121

Re: Registration Statement on Form S-8

Ladies and Gentlemen:

         We have examined the Registration  Statement on Form S-8 to be filed by
you with the Securities and Exchange  Commission on or about  September 14, 1999
(the  "Registration  Statement") in connection with the  registration  under the
Securities  Act of 1933, as amended,  of an aggregate of 600,000  shares of your
Common Stock, par value $0.001 par value, under the Amended 1992 Incentive Stock
Plan.  Such shares of Common Stock are referred to herein as the  "Shares",  and
such plan is  referred to herein as the "Plan".  As your  counsel in  connection
with this  transaction,  we have examined the proceedings taken and are familiar
with the proceedings proposed to be taken by you in connection with the issuance
and sale of the Shares pursuant to the Plan.

         It is our opinion  that,  upon  issuance  and sale of the Shares in the
manner described in the Plan and pursuant to the agreements which accompany each
grant under the Plan,  and delivery of and payment for the Shares in  accordance
with the Plan and such grant agreements,  for a purchase price not less than the
par value of the  Shares,  such Shares will be validly  issued,  fully-paid  and
non-assessable.

         We consent to the use of this opinion as an exhibit to the Registration
Statement,  and further consent to the use of our name wherever appearing in the
Registration Statement and any amendments thereto.

                                                     Very truly yours,



                                                     Latham & Watkins



                          NEUROCRINE BIOSCIENCES, INC.
                        AMENDED 1992 INCENTIVE STOCK PLAN
                     (as amended May 27, 1997, May 27, 1998
                                and May 21, 1999)

1. Purpose of the Plan. The purposes of this Incentive Stock Plan are to attract
and retain the best available personnel,  to provide additional incentive to the
employees of Neurocrine  Biosciences,  Inc. (the  "Company")  and to promote the
success of the Company's business.

    Options  granted   hereunder  may  be  either  Incentive  Stock  Options  or
Nonstatutory  Stock Options,  at the discretion of the Board and as reflected in
the terms of the written option agreement.  The Board also has the discretion to
grant Stock Purchase Rights.

2. Definitions.
(a)  "Board" shall mean the Committee,  if one has been appointed,  or the Board
     of Directors of the Company, if no Committee is appointed.

(b)  "Code" shall mean the Internal Revenue Code of 1986, as amended.

(c)  "Committee" shall mean the Committee appointed by the Board of Directors in
     accordance with Section 4(a) of the Plan, if one is appointed.

(d)  "Common Stock" shall mean the Common Stock of the Company.

(e)  "Company" shall mean Neurocrine Biosciences, Inc.

(f)  "Consultant"  shall mean any  person  who is engaged by the  Company or any
     Parent or Subsidiary to render  consulting  services and is compensated for
     such  consulting  services,   and  any  director  of  the  Company  whether
     compensated for such services or not.

(g)  "Continuous  Status as an Employee or Consultant" shall mean the absence of
     any interruption or termination of service as an Employee or Consultant, as
     applicable.  Continuous  Status as an Employee or  Consultant  shall not be
     considered  interrupted in the case of sick leave,  military  leave, or any
     other leave of absence  approved by the Board;  provided that such leave is
     for a period of not more than 90 days or  reemployment  upon the expiration
     of such leave is guaranteed by contract or statute.

(h)  "Employee"  shall  mean any  persons,  including  officers  and  directors,
     employed by the Company or any Parent or  Subsidiary  of the  Company.  The
     payment of a  director's  fee by the  Company  shall not be  sufficient  to
     constitute "employment" by the Company.

(i)  "Incentive  Stock  Option"  shall mean an Option  intended to qualify as an
     incentive stock option within the meaning of Section 422 of the Code.

(j)  "Nonstatutory Stock Option" shall mean an Option not intended to qualify as
     an Incentive Stock Option.

(k)  "Option" shall mean a stock option granted pursuant to the Plan.

(l)  "Optioned  Stock" shall mean the Common Stock subject to an Option or Stock
     Purchase Right.

(m)  "Optionee" shall mean an Employee or Consultant who receives an Option.

(n)  "Parent"  shall  mean a  "parent  corporation,"  whether  now or  hereafter
     existing, as defined in Section 424(e) of the Code.

(o)  "Plan" shall mean this 1992 Incentive Stock Plan.

(p)  "Purchaser"  shall mean an Employee  or  Consultant  who  exercises a Stock
     Purchase Right.

(q)  "Share" shall mean a share of the Common  Stock,  as adjusted in accordance
     with Section 11 of the Plan.

(r)  "Stock Purchase Right" shall mean a right to purchase Common Stock pursuant
     to the  Plan or the  right to  receive  a bonus of  Common  Stock  for past
     services.

(s)  "Subsidiary"  shall  mean  a  "subsidiary   corporation,"  whether  now  or
     hereafter existing, as defined in Section 424(f) of the Code.

3.   Stock Subject to the Plan. Subject to the provisions of Section 11 of the
Plan, the maximum  aggregate number of shares under the Plan is 5,300,000 shares
of Common Stock. The Shares may be authorized but unissued, or reacquired Common
Stock.

     If an Option or Stock Purchase Right should expire or become  unexercisable
for any reason  without  having been  exercised  in full,  then the  unpurchased
Shares  which  were  subject  thereto  shall,  unless  the Plan  shall have been
terminated,   become  available  for  future  grant  or  sale  under  the  Plan.
Notwithstanding  any other  provision of the Plan,  shares issued under the Plan
and later repurchased by the Company shall not become available for future grant
or sale under the Plan.

4. Administration of the Plan.

     (a)  Procedure.  (i)  Multiple  Administrative  Bodies.  The  Plan  may  be
     administered by different  Committees  with respect to different  groups of
     Employees  and  Consultants.  (ii) Section  162(m).  To the extent that the
     Administrator  determines  it to be  desirable to qualify  Options  granted
     hereunder as "performance-based compensation" within the meaning of Section
     162(m) of the Code, the Plan shall be administered by a Committee of two or
     more "outside  directors" within the meaning of Section 162(m) of the Code.
     (iii) Rule 16b-3. To the extent desirable to qualify transactions hereunder
     as exempt under Rule 16b-3, the transactions  contemplated  hereunder shall
     be structured to satisfy the  requirements  for exemption under Rule 16b-3.
     (iv) Other Administration.  Other than as provided above, the Plan shall be
     administered by (A) the Board or (B) a Committee,  which committee shall be
     constituted to satisfy applicable laws.

     (b) Powers of the Board.  Subject to the  provisions of the Plan, the Board
     shall have the authority,  in its discretion:  (i) to grant Incentive Stock
     Options,  Nonstatutory  Stock  Options or Stock  Purchase  Rights;  (ii) to
     determine,  upon  review of relevant  information  and in  accordance  with
     Section 7 of the Plan, the fair market value of the Common Stock;  (iii) to
     determine the exercise price per share of Options or Stock Purchase Rights,
     to be granted,  which exercise price shall be determined in accordance with
     Section 7 of the Plan;  (iv) to determine the Employees or  Consultants  to
     whom,  and the time or times at which,  Options  or Stock  Purchase  Rights
     shall be granted and the number of shares to be  represented by each Option
     or Stock  Purchase  Right;  (v) to interpret  the Plan;  (vi) to prescribe,
     amend and rescind  rules and  regulations  relating  to the Plan;  (vii) to
     determine the terms and  provisions of each Option and Stock Purchase Right
     granted  (which need not be identical)  and, with the consent of the holder
     thereof,  modify or amend any provisions  (including provisions relating to
     exercise price) of any Option or Stock Purchase Right; (viii) to accelerate
     or defer  (with the  consent  of the  Optionee)  the  exercise  date of any
     Option,  consistent  with the provisions of Section 5 of the Plan;  (ix) to
     authorize  any person to execute on behalf of the  Company  any  instrument
     required  to  effectuate  the grant of an Option  or Stock  Purchase  Right
     previously  granted  by  the  Board;  (x) to  allow  Optionees  to  satisfy
     withholding tax  obligations by electing to have the Company  withhold from
     the Shares to be issued upon exercise of an Option or Stock  Purchase Right
     that  number of  Shares  having a Fair  Market  Value  equal to the  amount
     required to be withheld. The Fair Market Value of the Shares to be withheld
     shall be determined on the date that the amount of tax to be withheld is to
     be  determined.  All  elections by an Optionee to have Shares  withheld for
     this purpose  shall be made in such form and under such  conditions  as the
     Administrator  may deem necessary or advisable;  and (xi) to make all other
     determinations  deemed necessary or advisable for the administration of the
     Plan.

     (c)  Effect  of  Board's  Decision.   All  decisions,   determinations  and
     interpretations  of the Board shall be final and binding on all  Optionees,
     Purchasers  and any other holders of any Options or Stock  Purchase  Rights
     granted under the Plan.

5. Eligibility.

     (a)  Options  and Stock  Purchase  Rights may be granted to  Employees  and
     Consultants,  provided that Incentive  Stock Options may only be granted to
     Employees.  An Employee  or  Consultant  who has been  granted an Option or
     Stock  Purchase  Right may, if such  Employee or  Consultant  is  otherwise
     eligible, be granted additional Option(s) or Stock Purchase Right(s).

     (b) Each Option  shall be  designated  in the written  option  agreement as
     either an Incentive Stock Option or a Nonstatutory  Stock Option.  However,
     notwithstanding  such  designation,  to the extent that the aggregate  fair
     market  value of the Shares with  respect to which  Options  designated  as
     Incentive  Stock Options are exercisable for the first time by any Optionee
     during any calendar year (under all plans of the Company) exceeds $100,000,
     such Options shall be treated as Nonstatutory Stock Options.

     (c) For purposes of Section  5(b),  Options  shall be taken into account in
     the order in which  they were  granted,  and the fair  market  value of the
     Shares shall be  determined  as of the time the Option with respect to such
     Shares is granted.

     (d) The Plan  shall  not  confer  upon any  Optionee  or  holder of a Stock
     Purchase Right any right with respect to  continuation  of employment by or
     the rendition of consulting services to the Company, nor shall it interfere
     in any way with his or her right or the Company's right to terminate his or
     her  employment  or services at any time,  with or without  cause.

     (e)  The  following  limitations  shall  apply  to  grants  of  Options  to
     Employees:  (i) No  Employee  shall be  granted,  in any fiscal year of the
     Company,  Options to purchase more than 250,000 Shares.  (ii) In connection
     with his or her initial  employment,  an Employee may be granted Options to
     purchase up to an additional  250,000  Shares which shall not count against
     the  limit  set  forth  in  subsection  (i)  above.   (iii)  The  foregoing
     limitations shall be adjusted proportionately in connection with any change
     in the  Company's  capitalization  as  described  in Section 11. (iv) If an
     Option is  canceled  in the same fiscal year of the Company in which it was
     granted (other than in connection  with a transaction  described in Section
     12),  the canceled  Option shall be counted  against the limit set forth in
     subsection (i) above. For this purpose,  if the exercise price of an Option
     is reduced,  such reduction will be treated as a cancellation of the Option
     and the grant of a new  Option.

6. Term of Plan.  The Plan shall become  effective  upon the earlier to occur of
its  adoption by the Board of  Directors or its approval by vote of holders of a
majority  of the  outstanding  shares  of the  Company  entitled  to vote on the
adoption of the Plan.  It shall  continue in effect for a term of ten (10) years
unless sooner terminated under Section 13 of the Plan.

7.  Exercise  Price and Consideration.

     (a) The per Share  exercise  price for the Shares to be issued  pursuant to
     exercise  of an Option or Stock  Purchase  Right  shall be such price as is
     determined by the Board, but shall be subject to the following:  (i) In the
     case of an Incentive  Stock Option;  (A) granted to an Employee who, at the
     time of grant of such Incentive Stock Option,  owns stock representing more
     than ten percent  (10%) of the voting  power of all classes of stock of the
     Company or any Parent or Subsidiary,  the per Share exercise price shall be
     no less than 110% of the fair market  value per Share on the date of grant.
     (B) granted to any other Employee, the per Share exercise price shall be no
     less  than  100% of the fair  market  value per Share on the date of grant.
     (ii) In the case of a Nonstatutory  Stock Option or a Stock Purchase Right,
     the per Share  exercise  price shall be no less than 85% of the fair market
     value per Share on the date of grant.  In the case of a Nonstatutory  Stock
     Option intended to qualify as  "performance-based  compensation" within the
     meaning of Section  162(m) of the Code,  the per Share exercise price shall
     be no less  than  100% of the Fair  Market  Value  per Share on the date of
     grant. (iii)  Notwithstanding the foregoing,  Options may be granted with a
     per Share  exercise  price of less than 100% of the Fair  Market  Value per
     Share  on the  date of  grant  pursuant  to a  merger  or  other  corporate
     transaction.

     For  purposes of this  Section  7(a),  in the event that an Option or Stock
     Purchase Right is amended to reduce the exercise  price,  the date of grant
     of such Option or Stock Purchase Right shall thereafter be considered to be
     the date of such amendment.

     (b)  The  fair  market  value  shall  be  determined  by the  Board  in its
     discretion;  provided, however, that where there is a public market for the
     Common Stock,  the fair market value per Share shall be the mean of the bid
     and asked  prices (or the  closing  price per share if the Common  Stock is
     listed  on  the  National   Association  of  Securities  Dealers  Automated
     Quotation  ("NASDAQ")  National  Market System) of the Common Stock for the
     date of grant,  as  reported  in the Wall  Street  Journal  (or,  if not so
     reported,  as otherwise reported by the NASDAQ System) or, in the event the
     Common Stock is listed on a stock exchange, the fair market value per Share
     shall be the  closing  price on such  exchange  on the date of grant of the
     Option or Stock Purchase Right, as reported in the Wall Street Journal.

     (c) The  consideration to be paid for the Shares to be issued upon exercise
     of an Option or Stock  Purchase  Right,  including  the method of  payment,
     shall be  determined  by the Board (and in the case of an  Incentive  Stock
     Option,  shall be determined at the time of grant) and may consist entirely
     of cash,  check,  promissory  note,  other Shares of Common Stock which (i)
     either have been owned by the  Optionee for more than six (6) months on the
     date of  surrender or were not acquired  directly or  indirectly,  from the
     Company,  and (ii) have a fair market value on the date of surrender  equal
     to the aggregate exercise price of the Shares as to which said Option shall
     be exercised,  or any combination of such methods of payment, or such other
     consideration  and  method of  payment  for the  issuance  of Shares to the
     extent  permitted  under  Sections  408 and 409 of the  California  General
     Corporation   Law.  In  making  its   determination   as  to  the  type  of
     consideration  to accept,  the Board shall  consider if  acceptance of such
     consideration  may be reasonably  expected to benefit the Company  (Section
     315(b) of the California General Corporation Law).

8. Options.

     (a) Term of Option. The term of each Option shall be the term stated in the
     Option Agreement;  provided,  however,  that the term shall be no more than
     ten (10) years from the date of grant thereof.  In the case of an Incentive
     Stock Option granted to an Optionee who, at the time the Option is granted,
     owns stock  representing more than ten percent (10%) of the voting power of
     all classes of stock of the Company or any Parent or  Subsidiary,  the term
     of the  Option  shall be five (5) years  from the date of grant  thereof or
     such shorter term as may be provided in the Option Agreement.

     (b)  Exercise  of  Option.   (i)  Procedure  for  Exercise;   Rights  as  a
     Shareholder.  Any Option  granted  hereunder  shall be  exercisable at such
     times and under such  conditions  as  determined  by the  Board,  including
     performance  criteria with respect to the Company and/or the Optionee,  and
     as shall be  permissible  under the terms of the Plan,  but in no case at a
     rate of less than 20% per year over five (5) years from the date the Option
     is granted.  An Option may not be exercised  for a fraction of a Share.  An
     Option shall be deemed to be exercised when written notice of such exercise
     has been given to the Company in accordance with the terms of the Option by
     the person  entitled to exercise the Option and full payment for the Shares
     with  respect to which the Option is  exercised  has been  received  by the
     Company.  Full  payment  may, as  authorized  by the Board,  consist of any
     consideration and method of payment allowable under Section 7 of, the Plan.
     Until the issuance (as evidenced by the  appropriate  entry on the books of
     the Company or of a duly  authorized  transfer agent of the Company) of the
     stock  certificate  evidencing  such  Shares  no right  to vote or  receive
     dividends or any other rights as a shareholder  shall exist with respect to
     the Optioned Sock,  notwithstanding the exercise of the Option. The Company
     shall issue (or cause to be issued) such stock  certificate  promptly  upon
     exercise of the Option.  In the event that the  exercise of a  Nonstatutory
     Stock Option  pursuant to Section 5(b),  the Company shall issue a separate
     stock  certificate  evidencing the Shares treated as acquired upon exercise
     of an Incentive  Stock Option and a separate stock  certificate  evidencing
     the Shares treated as acquired upon exercise of a Nonstatutory Stock Option
     and shall identify each such certificate  accordingly in its stock transfer
     records. No adjustment will be made for a dividend or other right for which
     the  record  date is prior to the date the  stock  certificate  is  issued,
     except as provided in Section 11 of the Plan.  Exercise of an Option in any
     manner shall result in a decrease in the number of Shares which  thereafter
     may be  available,  both for  purposes  of the Plan and for sale  under the
     Option,  by the number of Shares as to which the Option is exercised.  (ii)
     Termination  of  Status  as an  Employee  or  Consultant.  In the  event of
     termination of an Optionee's Continuous Status as an Employee or Consultant
     (as the case may be),  such  Optionee  may,  but only within such period of
     time as is determined by the Board, with such  determination in the case of
     an Incentive Stock Option not exceeding three (3) months and in the case of
     Nonstatutory  Stock Option not  exceeding  six (6) months after the date of
     termination,  with such  determination  in the case of an  Incentive  Stock
     Option  being made at the time of grant of the Option,  exercise the Option
     to the extent that such Employee or Consultant  was entitled to exercise it
     at the date of such  termination  (but in no event  later  than the date of
     expiration  of the  term  of  such  Option  as  set  forth  in  the  Option
     Agreement). To the extent that such Employee or Consultant was not entitled
     to exercise the Option at the date of such termination, or if such Employee
     or  Consultant  does not  exercise  such  Option  (which  such  Employee or
     Consultant was entitled to exercise) within the time specified herein,  the
     Option shall terminate.  (iii) Disability of Optionee.  Notwithstanding the
     provisions of Section  8(b)(ii)  above,  in the event of  termination of an
     Optionee's  Continuous  Status as an Employee or  Consultant as a result of
     such Employee's or Consultant's total and permanent  disability (as defined
     in Section 22(e)(3) of the Code), such Employee or Consultant may, but only
     within six (6) months (or such other  period of time not  exceeding  twelve
     (12) months as in determined by the Board,  with such  determination in the
     case of an  Incentive  Stock  Option  being made at the time of gant of the
     Option) from the date of such  termination  (but in no event later than the
     date of  expiration  of the term of such  Option as set forth in the Option
     Agreement),  exercise the Option to the extent such  Employee or Consultant
     was entitled to exercise it at the date of such termination.  To the extent
     that such Employee or Consultant was not entitled to exercise the Option at
     the  date of  termination,  or if such  Employee  or  Consultant  does  not
     exercise such Option  (which such  Employee or  Consultant  was entitled to
     exercise)  within the time specified  herein,  the Option shall  terminate.
     (iv)  Death of  Optionee.  In the  event of the death of an  Optionee:  (A)
     during  the term of the  Option  who is at the time of his or her  death an
     Employee or Consultant of the Company and who shall have been in Continuous
     Status as an Employee or Consultant  since the date of grant of the Option,
     the Option may be  exercised,  at any time within six (6) months (but in no
     event later than the date of  expiration  of the term of such Option as set
     forth in the Option Agreement), by the Optionee's estate or by a person who
     acquired  the right to exercise the Option by bequest or  inheritance,  but
     only to the extent  that the right to exercise  would have  accrued had the
     Optionee  continued living and remained in Continuous Status as an Employee
     or Consultant six (6) months (or such other period of time as in determined
     by the Board at the time of grant of the  Option)  after the date of death;
     or (B) within  thirty (30) days (or such other period of time not exceeding
     three (3) months as is determined by the Board, with such  determination in
     the case of an  Incentive  Stock  Option being made at the time of grant of
     the Option) after the  termination  of Continuous  Status as an Employee or
     Consultant,  the Option may be exercised, at any time within six (6) months
     (or such other period of time as is  determined by the Board at the time of
     grant of the  Option)  following  the date of death (but in no event  later
     than the date of  expiration of the term of such Option as set forth in the
     Option Agreement), by the Optionee's estate or by a person who acquired the
     right to  exercise  the Option by bequest or  inheritance,  but only to the
     extent  of  the  right  to  exercise  that  had  accrued  at  the  date  of
     termination.

9. Stock Purchase Rights.

     (a) Rights to  Purchase.  After the Board of Directors  determines  that it
     will offer an Employee  or  Consultant  a Stock  Purchase  Right,  it shall
     deliver to the offeree a stock purchase agreement or stock bonus agreement,
     as the case may be, setting forth the terms,  conditions  and  restrictions
     relating  to the offer,  including  the number of Shares  which such person
     shall be entitled to  purchase,  and the time within which such person must
     accept such offer,  which shall in no event  exceed six (6) months from the
     date  upon  which  the  Board  of  Directors  or  its  Committee  made  the
     determination  to grant  the  Stock  Purchase  Right.  The  offer  shall be
     accepted  by  execution  of a  stock  purchase  agreement  or  stock  bonus
     agreement in the from determined by the Board of Directors.

     (b)  Issuance  of Shares.  Forthwith  after  payment  therefor,  the Shares
     purchased  shall be duly  issued;  provided,  however,  that the  Board may
     require that the  Purchaser  make  adequate  provision  for any Federal and
     State  withholding  obligations  of  the  Company  as a  condition  to  the
     Purchaser  purchasing such Shares.

     (c) Repurchase  Option.  Unless the Board determines  otherwise,  the stock
     purchase  agreement  or stock  bonus  agreement  shall  grant the Company a
     repurchase option exercisable upon the voluntary or involuntary termination
     of the Purchaser's  employment  with the Company for any reason  (including
     death or  disability).  If the Board so determines,  the purchase price for
     shares  repurchased may be paid by cancellation of any  indebtedness of the
     Purchaser to the Company. The repurchase option shall lapse at such rate as
     the Board may determine.

     (d) Other Provisions. The stock purchase agreement or stock bonus agreement
     shall contain such other terms,  provisions and conditions not inconsistent
     with  the  Plan  as may  be  determined  by the  Board  of  Directors.

10.  Non-Transferability of Options and Stock Purchase Rights. Unless determined
otherwise by the  Administrator,  an Option or Stock  Purchase  Right may not be
sold, pledged, assigned, hypothecated, transferred, or disposed of in any manner
other  than  by  will  or by the  laws of  descent  or  distribution  and may be
exercised,  during the lifetime of the Optionee,  only by the  Optionee.  If the
Administrator makes an Option or Stock Purchase Right transferable,  such Option
or Stock  Purchase Right shall contain such  additional  terms and conditions as
the  Administrator   deems   appropriate.

11.  Adjustments  upon  Changes  in  Capitalization  or Merger.

     (a)  Changes  in  Capitalization.  Subject  to any  required  action by the
     shareholders  of the Company,  the number of shares of Common Stock covered
     by each  outstanding  Option or Stock  Purchase  Right,  and the  number of
     shares of Common Stock which have been  authorized  for issuance  under the
     Plan but as to which no  Options  or Stock  Purchase  Rights  have yet been
     granted  or which  have  been  returned  to the Plan upon  cancellation  or
     expiration of an Option or Stock Purchase  Right,  as well as the price per
     share of Common  Stock  covered  by each such  outstanding  Option or Stock
     Purchase  Right,  shall be  proportionately  adjusted  for any  increase or
     decrease in the number of issued  shares of Common Stock  resulting  from a
     stock  split,   reverse  stock  split,   stock  dividend,   combination  or
     reclassification  of the Common Stock, or any other increase or decrease in
     the number of issued  shares of Common Stock  effected  without  receipt of
     consideration by the Company. The conversion of any convertible  securities
     of the Company shall not be deemed to have been "effected  without  receipt
     of  consideration."  Such  adjustment  shall  be made by the  Board,  whose
     determination  in that  respect  shall be final,  binding  and  conclusive.
     Except as expressly  provided herein,  no issuance by the Company of shares
     of stock of any class,  or securities  convertible  into shares of stock of
     any class,  shall affect, and no adjustment by reason thereof shall be made
     with respect to, the number or price of shares of Common  Stock  subject to
     an Option or Stock Purchase Right.

     (b) Dissolution or Liquidation. In the event of the proposed dissolution or
     liquidation of the Company,  the Administrator shall notify the Optionee or
     Purchaser at least fifteen (15) days prior to such proposed action.  To the
     extent it has not been previously  exercised,  the Option or Stock Purchase
     Right  shall  terminate  immediately  prior  to the  consummation  of  such
     proposed action.

     (c)  Merger  or  Asset  Sale.  In the  event  of a  merger,  sale of all or
     substantially  all of the  assets  of the  Company,  tender  offer or other
     transaction  or series of  related  transactions  resulting  in a change of
     ownership of more than 50% of the voting securities of the Company ("Change
     in  Control"),  approved by the majority of the members of the Board on the
     Board prior to the commencement of such Change in Control, each outstanding
     Option shall be assumed or an equivalent option or right substituted by the
     successor   corporation   or  a  Parent  or  Subsidiary  of  the  successor
     corporation;  provided  however,  in the event that  within one year of the
     date of the completion of the Change in Control, the successor  corporation
     or a Parent or  Subsidiary  of the  successor  corporation  terminates  the
     employment of an Optionee  without Cause (as defined below),  such Optionee
     shall fully vest in and have the right to exercise  the options  assumed or
     substituted  for the  Option  as to all of the  Optioned  Stock,  including
     Shares as to which it would not otherwise be exercisable. In the event that
     the successor  corporation  refuses to assume or substitute for the Option,
     the Optionee  shall fully vest in and have the right to exercise the Option
     as to all of the Optioned Stock,  including Shares as to which it would not
     otherwise be exercisable. If an Option becomes fully vested and exercisable
     in lieu of assumption or  substitution in the event of a Change of Control,
     the  Administrator  shall notify the Optionee in writing or  electronically
     that the  Option  shall be fully  vested  and  exercisable  for a period of
     fifteen  (15)  days  from the date of such  notice,  and the  Option  shall
     terminate  upon the  expiration  of such  period.  For the purposes of this
     paragraph,  the Option shall be considered assumed if, following the Change
     of Control,  the option  confers the right to  purchase,  for each Share of
     Optioned  Stock  subject to the Option  immediately  prior to the Change in
     Control,  the  consideration  (whether stock,  cash, or other securities or
     property)  received in the Change of Control by holders of Common Stock for
     each Share held on the effective  date of the  transaction  (and if holders
     were offered a choice of consideration, the type of consideration chosen by
     the holders of a majority of the outstanding  Shares);  provided,  however,
     that if such consideration  received in the Change of Control is not solely
     common stock of the successor  corporation or its Parent, the Administrator
     may,  with  the  consent  of the  successor  corporation,  provide  for the
     consideration  to be received  upon the  exercise  of the Option,  for each
     Share of Optioned Stock subject to the Option, to be solely common stock of
     the successor  corporation  or its Parent equal in fair market value to the
     per share  consideration  received by holders of Common Stock in the Change
     of  Control.  For  purposes  of this  paragraph,  termination  shall be for
     "Cause" in the event of the  occurrence  of any of the  following:  (a) any
     intentional  action or  intentional  failure to act by  employee  which was
     performed  in bad  faith and to the  material  detriment  of the  successor
     corporation  or its  Parent  or  Subsidiary;  (b)  employee  willfully  and
     habitually neglects the duties of employment;  or (c) employee is convicted
     of a felony crime  involving  moral  turpitude,  provided that in the event
     that any of the foregoing  events is capable of being cured,  the successor
     corporation or its Parent or Subsidiary shall provide written notice to the
     employee  describing  the  nature  of such  event  and the  employee  shall
     thereafter  have five (5) business days to cure such event. In the event of
     a Change in Control which is not approved by the majority of the members of
     the Board on the Board  prior to the  commencement  of a Change in Control,
     each  Optionee  shall  fully  vest in and have the  right to  exercise  all
     outstanding Options as to all of the Optioned Stock, including Shares as to
     which it would not otherwise be exercisable.

12. Date of Granting  Options.  The date of grant of an Option or Stock Purchase
Right  shall,  for all  purposes,  be the  date on which  the  Board  makes  the
determination  granting  such  Option  or stock  Purchase  Right.  Notice of the
determination shall be given to each Employee or Consultant to whom an Option or
Stock Purchase  Right is so granted  within a reasonable  time after the date of
such grant.

13.  Amendment and Termination of the Plan.

     (a) Amendment and  Termination.  The  Administrator  may at any time amend,
     alter,  suspend or  discontinue  the Plan,  but no  amendment,  alteration,
     suspension or  discontinuation  shall be made which would impair the rights
     of any  Optionee  under  any grant  theretofore  made,  without  his or her
     consent. In addition,  to the extent necessary and desirable to comply with
     Section 422 of the Code (or any other  Applicable  Laws or regulation,  the
     requirements  of the NASD or an established  stock  exchange),  the Company
     shall obtain  shareholder  approval of any Plan  amendment in such a manner
     and to such a degree as required.

     (b) Effect of Amendment or  Termination.  Any such amendment or termination
     of the Plan  shall not  affect  Options or Stock  Purchase  Rights  already
     granted,  and such Options and Stock  Purchase  Rights shall remain in full
     force and effect as if this Plan had not been amended or terminated, unless
     mutually agreed otherwise between the Optionee and the Administrator, which
     agreement  must be in writing and signed by the  Optionee  and the Company.

14.  Conditions Upon Issuance of Shares.  Shares shall not be issued pursuant to
the exercise of an Option or Stock  Purchase  Rights unless the exercise of such
Option or Stock  Purchase  Rights and the  issuance  and delivery of such Shares
pursuant  thereto shall comply with all relevant  provisions of law,  including,
without  limitation,  the Securities Act of 1933, as amended,  the Exchange Act,
the rules and regulations  promulgated  thereunder,  and the requirements of any
stock  exchange  upon which the Shares may then be listed,  and shall be further
subject  to the  approval  of  counsel  for the  Company  with  respect  to such
compliance. As a condition to the exercise of an Option or Stock Purchase Right,
the  Company may require  the person  exercising  such Option or Stock  Purchase
Right to represent  and warrant at the time of any such exercise that the Shares
are being  purchased only for  investment  and without any present  intention to
sell or  distribute  such Shares if, in the opinion of counsel for the  Company,
such  a  representation  is  required  by any  of  the  aforementioned  relevant
provisions of law.

15.  Reservation of Shares.  The Company,  during the term of this Plan, will at
all  times  reserve  and  keep  available  such  number  of  Shares  as shall be
sufficient to satisfy the requirements of the Plan. The inability of the Company
to  obtain  authority  from  any  regulatory  body  having  jurisdiction,  which
authority  is deemed by the  Company's  counsel  to be  necessary  to the lawful
issuance  and sale of any Shares  hereunder,  shall  relieve  the Company of any
liability  in  respect of the  failure to issue or sell such  Shares as to which
such  requisite  authority  shall  not have been  obtained.

16.  Option,  Stock  Purchase  and  Stock  Bonus  Agreements.  Options  shall be
evidenced by written option  agreements in such form as the Board shall approve.
Upon the exercise of Stock  Purchase  Rights,  the Purchaser  shall sign a stock
purchase  agreement  or stock  bonus  agreement  in such form as the Board shall
approve.

17. Shareholder  Approval.  Continuance of the Plan shall be subject to approval
by the shareholders of the Company within twelve (12) months before or after the
date the Plan is adopted.  Such  shareholder  approval  shall be obtained in the
degree  and manner  required  under  Applicable  Laws and the rules of any stock
exchange upon which the Common Stock is listed.

18.  Information to Optionees and Purchasers.  The Company shall provide to each
Optionee and  Purchaser,  during the period for which such Optionee or Purchaser
has one or more Options to Stock Purchase  Rights  outstanding,  a balance sheet
and an income statement at least annually.  The Company shall not be required to
provide such  information to key employees  whose duties in connection  with the
Company assure there access to equivalent information.


               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

We consent to the incorporation by reference in this  Registration  Statement on
Form S-8  pertaining  to the Amended  1992  Incentive  Stock Plan of  Neurocrine
Biosciences,  Inc. of our report dated January 26, 1999,  except for Note 13, as
to which the date March 2, 1999,  with  respect  to the  consolidated  financial
statements of Neurocrine Biosciences, Inc. included in its Annual Report on Form
10-K for the year  ended  December  31,  1998,  filed  with the  Securities  and
Exchange Commission.


San Diego, California
September 13, 1999