PROSPECTUS FILED PURSUANT TO RULE 424(B)(3)

                       LIGAND PHARMACEUTICALS INCORPORATED

                                                FILED PURSUANT TO RULE 424(B)(3)
                                                     REGISTRATION NO. 333-131029

                           PROSPECTUS SUPPLEMENT NO. 8
    (TO PROSPECTUS DATED APRIL 12, 2006, AS SUPPLEMENTED AND AMENDED BY THAT
 PROSPECTUS SUPPLEMENT NO. 1 DATED MAY 15, 2006, THAT PROSPECTUS SUPPLEMENT
 NO. 2 DATED JUNE 12, 2006, THAT PROSPECTUS SUPPLEMENT NO. 3 DATED JUNE 29,
2006, THAT PROSPECTUS SUPPLEMENT NO. 4 DATED AUGUST 4, 2006, THAT PROSPECTUS
SUPPLEMENT NO. 5 DATED AUGUST 9, 2006, THAT PROSPECTUS SUPPLEMENT NO. 6 DATED
AUGUST 30, 2006, AND THAT PROSPECTUS SUPPLEMENT NO. 7 DATED SEPTEMBER 11, 2006)

         This Prospectus Supplement No. 8 supplements and amends the prospectus
dated April 12, 2006 (as supplemented and amended by that Prospectus Supplement
No. 1 dated May 15, 2006, that Prospectus Supplement No. 2 dated June 12, 2006,
that Prospectus Supplement No. 3 dated June 29, 2006, that Prospectus Supplement
No. 4 dated August 4, 2006, that Prospectus Supplement No. 5 dated August 9,
2006, that Prospectus Supplement No. 6 dated August 30, 2006, and that
Prospectus Supplement No. 7 dated September 11, 2006), or the Prospectus,
relating to the offer and sale of up to 7,790,974 shares of our common stock to
be issued pursuant to awards granted or to be granted under our 2002 Stock
Incentive Plan, or our 2002 Plan, up to 147,510 shares of our common stock to be
issued pursuant to our 2002 Employee Stock Purchase Plan, or our 2002 ESPP, and
up to 50,309 shares of our common stock which may be offered from time to time
by the selling stockholders identified on page 110 of the Prospectus for their
own accounts. Each of the selling stockholders named in the Prospectus acquired
the shares of common stock upon exercise of options previously granted to them
as an employee, director or consultant of Ligand or as restricted stock granted
to them as a director of Ligand, in each case under the terms of our 2002 Plan.
We will not receive any of the proceeds from the sale of the shares of our
common stock by the selling stockholders under the Prospectus. We will receive
proceeds in connection with option exercises under the 2002 Plan and shares
issued under the 2002 ESPP which will be based upon each granted option exercise
price or purchase price, as applicable.

         This Prospectus Supplement No. 8 includes the attached Current Report
on Form 8-K of Ligand Pharmaceuticals Incorporated dated September 12, 2006, as
filed by us with the Securities and Exchange Commission.

         This Prospectus Supplement No. 8 should be read in conjunction with,
and delivered with, the Prospectus and is qualified by reference to the
Prospectus, except to the extent that the information in this Prospectus
Supplement No. 8 updates or supersedes the information contained in the
Prospectus.

         Our common stock is quoted on the Nasdaq Global Market under the symbol
"LGND." On September 11, 2006, the last reported sale price of our common stock
on the Nasdaq Global Market was $10.35 per share.

         INVESTING IN OUR COMMON STOCK INVOLVES RISK. SEE "RISK FACTORS"
BEGINNING ON PAGE 7 OF THE PROSPECTUS AND BEGINNING ON PAGE 52 OF PROSPECTUS
SUPPLEMENT NO. 5.

         Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities or determined if the
Prospectus or this Prospectus Supplement No. 8 is truthful or complete. Any
representation to the contrary is a criminal offense.

       The date of this Prospectus Supplement No. 8 is September 12, 2006.





                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

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

                                    FORM 8-K

                                 CURRENT REPORT


     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

       Date of Report (Date of earliest event reported): September 6, 2006

                       LIGAND PHARMACEUTICALS INCORPORATED
             (Exact name of registrant as specified in its charter)

                                    DELAWARE
                 (State or other jurisdiction of incorporation)

                                    000-20720
                            (Commission File Number)

                           10275 SCIENCE CENTER DRIVE,
                              SAN DIEGO, CALIFORNIA

                    (Address of principal executive offices)
       (858) 550-7500 (Registrant's telephone number, including area code)

                                   77-0160744
                      (I.R.S. Employer Identification No.)

                                   92121-1117
                                   (Zip Code)


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

|_| Written communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)
|X| Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)
|_| Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
Act (17 CFR 240.14d-2(b))
|_| Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
Act (17 CFR 240.13e-4(c))





ITEM 1.01.  ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT.

CONTRACT SALES FORCE AGREEMENT

        On September 6, 2006, Ligand Pharmaceuticals Incorporated, a
Delaware corporation (the "Company") and King Pharmaceuticals, Inc., a Tennessee
corporation ("King Pharmaceuticals") entered into a Contract Sales Force
Agreement (the "Sales Agreement"), pursuant to which King Pharmaceuticals has
agreed to conduct a detailing program to promote the sale of Avinza(R) for an
agreed upon fee, subject to the terms and conditions of the Sales Agreement.
Pursuant to the Sales Agreement, King Pharmaceuticals has agreed to perform
certain minimum monthly product details, which are to commence no later than
October 1, 2006 and continue (i) for a period of six months following such date,
(ii) until the closing (the "Closing") of the transactions contemplated by the
definitive agreement ("Definitive Agreement") by and among the Company, King
Pharmaceuticals and King Pharmaceuticals Research and Development, Inc., a
Delaware corporation and wholly owned subsidiary of King Pharmaceuticals,
executed concurrently herewith for the purchase and sale of all rights to
Avinza(R) (the "Transaction"), or (iii) until the earlier termination of the
Definitive Agreement. Following the initial term, the Company may, at its
option, extend the term of the Sales Agreement for an additional one-month
period.The Company estimates that, assuming the Closing were to occur at the end
of December 2006, the amount due to King Pharmaceuticals under the Sales
Agreement would be approximately $4 million.

        The foregoing description of the Sales Agreement does not purport
to be complete and is qualified in its entirety by reference to the Sales
Agreement, which is attached hereto as Exhibit 10.1 and is incorporated herein
by reference. Confidential treatment has been requested on certain portions of
the Sales Agreement.

           IMPORTANT ADDITIONAL INFORMATION WILL BE FILED WITH THE SEC

        The Company and its board of directors intend to file with the
Securities and Exchange Commission and mail to its stockholders a Proxy
Statement in connection with the Transaction. The Proxy Statement will contain
important information about the Company, King Pharmaceuticals, the Transaction
and related matters. Investors and security holders are urged to read the Proxy
Statement carefully when it is available.

        Investors and security holders will be able to obtain copies of
the Proxy Statement and other documents filed with the SEC by the Company and
King Pharmaceuticals free of charge through the web site maintained by the SEC
at WWW.SEC.GOV. In addition, investors and security holders will be able to
obtain copies of the Proxy Statement free of charge from the Company by
contacting Ligand Pharmaceuticals Incorporated, Attn: Investor Relations, 10275
Science Center Drive, San Diego, California 92121-1117, (858) 550-7500.

        The Company and its directors and executive officers may be deemed
to be participants in the solicitation of proxies in respect of the Transaction.
Information regarding the Company's directors and executive officers is
contained in the Company's Form 10-K for the year ended December 31, 2005 and in
Reports on Form 8-K filed with the SEC from time to time. As of August 31, 2006,
the Company's directors and executive officers beneficially owned approximately
9,695,891 shares, or 11.99%, of the Company's common stock. A more complete
description will be available in the Proxy Statement. Investors and security
holders are urged to read the Proxy Statement and the other relevant materials
(when they become available) before making any voting or investment decision
with respect to the Transaction.

ITEM 9.01.   FINANCIAL STATEMENTS AND EXHIBITS.

(d)      Exhibits

EXHIBIT NUMBER          DESCRIPTION
--------------          --------------------

10.1                    Contract Sales Force Agreement, by and between Ligand
                        Pharmaceuticals Incorporated and King Pharmaceuticals,
                        Inc. dated as of September 6, 2006




                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                            LIGAND PHARMACEUTICALS INCORPORATED




Date : September 12, 2006   By:      /s/ Warner R. Broaddus
                            Name:    Warner R. Broaddus
                            Title:   Vice President, General Counsel & Secretary





                                  EXHIBIT INDEX



EXHIBIT NUMBER          DESCRIPTION
--------------          --------------------

10.1                    Contract Sales Force Agreement, by and between Ligand
                        Pharmaceuticals Incorporated and King Pharmaceuticals,
                        Inc. dated as of September 6, 2006



                                                                   EXHIBIT 10.1


CERTAIN MATERIAL (INDICATED BY AN ASTERISK) HAS BEEN OMITTED FROM THIS DOCUMENT
PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL HAS BEEN
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

                         CONTRACT SALES FORCE AGREEMENT




         THIS CONTRACT SALES FORCE AGREEMENT (this "AGREEMENT"), is made and
dated as of September 6, 2006 (the "EFFECTIVE DATE"), by and between KING
PHARMACEUTICALS, INC., a corporation duly organized and existing under the
applicable laws of the State of Tennessee, having a principal place of business
at 501 Fifth Street, Bristol, Tennessee 37620 ("KING") and LIGAND
PHARMACEUTICALS INCORPORATED, a corporation duly organized and existing under
the applicable laws of the State of Delaware, and having a principal place of
business at 10275 Science Center Drive, San Diego, California 92121 ("LIGAND").

         WHEREAS, Ligand wishes to engage King to conduct a detailing program to
promote the sale of Avinza(R) in the Territory (such capitalized terms to have
the meanings set forth in Section 1.1 below) under the terms and conditions set
forth herein; and

         WHEREAS, King has the ability to provide the services of its sales
force to conduct such a detailing program and desires to be so engaged by Ligand
pursuant to the terms hereof.

         NOW, THEREFORE, in consideration of the premises and the mutual
covenants and agreements contained herein, the parties hereto, intending to be
legally bound hereby, do agree as follows:

                                   ARTICLE 1
                                   DEFINITIONS

        1.1     DEFINITIONS. For purposes of this Agreement, the following
terms, whether in the singular or the plural, shall have the meanings designated
to them under this Article, unless otherwise specifically indicated:

                (A)     "ACT" shall mean the Federal Food, Drug and Cosmetic
Act, asamended, and the regulations promulgated thereunder from time to time.

                (B)     "AFFILIATES" shall mean, in relation to a party, any
person, corporation, firm, partnership or other entity, whether DE JURE or DE
FACTO, which directly or indirectly through one or more intermediaries controls,
is controlled by or is under common control with such party. An entity shall be
deemed to control another entity if it: (i) owns, directly or indirectly, at
least fifty percent (50%) of the outstanding voting securities or capital stock
(or such lesser percentage which is the maximum allowed to be owned by a foreign
corporation in a particular jurisdiction) of such other entity, or has other
comparable ownership interest with respect to any entity other than a
corporation; or (ii) has the power, whether pursuant to contract, ownership of
securities or otherwise, to direct the management and policies of the entity.

                (C)     "AVINZA(R)" shall mean morphine sulfate extended-release
capsules, a modified release formulation of morphine sulfate indicated for once-
daily administration for the relief of moderate to severe pain.


                                       1


                (D)     "ELAN AGREEMENT" shall mean that certain Amended and
Restated License and Supply Agreement, dated as of November 12, 2002, by and
among Elan Corporation, PLC, Elan Management Limited and Ligand.

                (E)     "FDA" shall mean the United States Food and Drug
Administration, or any successor entity thereto.

                (F)     "IMS PRESCRIBER DATA" shall mean data from IMS which
measures dollarized prescriptions written for the Product by each Prescriber in
the Territory during a specified time period as set forth herein, or, in the
event that at any time during the term of this Agreement such data shall not be
available from IMS, comparable data from a source mutually agreed in writing by
King and Ligand.

                (G)     "KING SALES FORCE" shall mean the Representatives, and
any and all agents, contractors, and employees of King designated and used by
King from time to time to conduct the Program, which, as of Effective Date,
totals no less than [***] ***Certain information on this page has been omitted
and filed separately with the Commission. Confidential treatment has been
requested with respect to the omitted portions. Representatives
(less current vacancies) comprised of one Primary Care sales force and one
NeuroPsych Specialty sales force.

                (H)     "PDE" shall mean a primary detail equivalent and be
defined as equivalent to any of the following: (i) one P1 Detail; (ii) two P2
Details; or (iii) five P3 Details. Product Calls other than P1 Details, P2
Details and P3 Details shall have no effect on any calculation of PDEs. A "P1
DETAIL" is a Product Call where the Product is presented in the first position.
A "P2 DETAIL" is a Product Call where the Product is presented in the second
position. A "P3 DETAIL" is a Product Call where the Product is presented in the
third position.

                (I)     "PDMA" shall mean the Prescription Drug Marketing Act of
1987, as amended, and the regulations promulgated thereunder from time to time.

                (J)     "PRESCRIBERS" shall mean, as mutually identified in
writing by Ligand and King prior to the Product Call Commencement Date, taking
into account the parties' established lists and practices, (i) healthcare
institutions, hospitals, outpatient surgery centers and clinics (collectively,
"TARGET ACCOUNTS"), and (ii) medical doctors and doctors of osteopathy that are
primary care physicians (I.E., internal medicine practitioners, family
practitioners and general practitioners), other specialists, including, but not
limited to, pain specialists, physical medicine and rehabilitation specialists,
neurologists and anesthesiologists, and other health care professionals or para-
professionals legally authorized to write prescriptions for pharmaceutical
products located in the Territory pursuant to applicable law (collectively,
"TARGET PRESCRIBERS").

                (K)    "PRODUCT" shall mean Avinza(R).

                (L)     "PRODUCT CALL" shall mean an in person, face-to-face
contact by a King Representative with a Prescriber in the Territory, during
which time the promotional message involving the Product is presented in the
first, second or third position.

                (M)     "PRODUCT CALL COMMENCEMENT DATE" shall mean the date
upon which the Representatives commence conducting Product Calls in the
Territory pursuant to Section 2.2(c) or such other date as may be established by
mutual written agreement of the parties.


***Certain information onthis page has been omitted and filed separately with
the Commisssion. Confidential Treatment has been requested with respect to the
omitted portions.

                                       2



                (N)     "PRODUCT IP" shall mean, collectively, the Product
Patent, the Product Know-How and the Product Trademarks.

                (O)     "PRODUCT KNOW-HOW" shall mean the knowledge,
information, trade secrets, data and expertise relating to the Product licensed
to Ligand pursuant to the terms of the Elan Agreement.

                (P)     "PRODUCT LABELING" shall mean all labels and other
written, printed or graphic matter upon (i) any container or wrapper utilized
with the Products or (ii) any written material accompanying the Products,
including, without limitation, Product package inserts, each of which have been
provided by Ligand to King.

                (Q)     "PRODUCT PATENT" shall mean U.S. Patent No. 6,066,339,
which has been licensed to Ligand pursuant to, and subject to the terms and
conditions of, the Elan Agreement.

                (R)     "PRODUCT PROMOTIONAL MATERIALS" shall mean all written,
printed or graphic material, other than Product Labeling, provided by Ligand to
King and intended for use by Representatives during Product Calls, including
visual aids, file cards, premium items, clinical studies, reprints, business
cards, identification tags and any other promotional support items that Ligand
deems necessary or desirable to conduct the Program.

                (S)     "PRODUCT TRADEMARKS" shall mean those trademarks set
forth on Schedule I hereto.

                (T)     "PROGRAM" shall mean the activities described in
Article 2 and elsewhere in this Agreement to be conducted by King and its
Representatives pursuant to, and during the term of, this Agreement.

                (U)     "PROGRAM FEE" shall have the meaning set forth in
Section 3.1(a).

                (V)     "REPRESENTATIVES" shall mean the sales representatives
employed by King that shall conduct Product Calls in connection with the Program
pursuant to the terms of this Agreement.

                (W)     "TERRITORY" shall mean the United States and its
territories and possessions.

                (X)     "TRAINING PROGRAM" shall have the meaning set forth in
Section 6.2(a).



                                   ARTICLE 2
                      APPOINTMENT OF KING; RESPONSIBILITIES

        2.1     APPOINTMENT OF KING. Ligand hereby appoints King as a non-
exclusive provider of Product Calls, and King hereby accepts such appointment,
to carry out the Program under the terms and conditions set forth herein. King
shall use the King Sales Force to conduct Product Calls as contemplated by this
Agreement. In connection therewith, King shall during the term of this Agreement
maintain an experienced, well-trained sales force of Representatives to conduct
Product Calls in accordance with Ligand's marketing plans for the Product, and
consistent with King's obligations hereunder.

        2.2     RESPONSIBILITIES OF KING. King shall have the following
responsibilities, among others set forth in this Agreement, in connection with
the Program:


                                       3


                (A)     King shall cause each Representative to attend and
successfully complete the Training Program (as defined hereinbelow) prior to a
Representative being placed in the Territory to conduct Product Calls.
Thereafter, King shall cause each replacement Representative or additional
Representative to attend and successfully complete the Training Program prior to
conducting Product Calls in the Territory. The expenses (including travel and
accommodations, but excluding training materials) for the King Sales Force to
attend and complete the Training Program, and any and all subsequent training
conducted by King, which the Representatives shall be required to attend, shall
be paid for by King and shall take place at the locations and on the dates set
forth in Section 6.2(b) below or at such other place and time as mutually agreed
 between the parties.

                (B)     Subject to Ligand's obligations to reimburse King for
certain marketing related expenses as set forth in Section 3.1(b), King shall be
responsible for all costs and expenses incurred by its Representatives in
conducting Product Calls, including, but not limited to, all start-up, sales
force automation expenses and fees, field management expenses, Representatives'
salaries and bonuses and related taxes, customary review and planning sessions,
cost to maintain a project director and any other costs associated with
maintaining the King Sales Force, as well as the costs of tracking the Product
Calls made hereunder.

                (C)     The King Sales Force shall, each month, conduct Product
Calls in the Territory consistent with a minimum level of [***] ***Certain
information on this page has been omitted been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions. PDEs per month (measured on a quarterly basis) and a total of
[***] PDEs over a six-month period commencing on the earlier of (i) October 1,
2006 and (ii) September 18, 2006, PROVIDED that the parties have received the
consent of Organon Pharmaceuticals USA, Inc. to initiate such activities prior
to October 1, 2006.

                (D)     King shall promptly remove or reassign from the Program
any Representative who fails to comply with the terms of the Medicare and
Medicaid anti-kickbackstatute set forth at 42 U.S.C. ss.1320a-7b(b).

                (E)     King shall use only Product Promotional Materials
provided by Ligand. King acknowledges and agrees that, unless otherwise agreed
to between the parties in the Definitive Agreement (as hereinafter defined), as
between the parties, Ligand shall own all right, title and interest in and to
the Product Promotional Materials, including, but not limited to, all copyrights
therein, and, for the avoidance of doubt, nothing herein shall be construed to
qualify  the Product Promotional Materials as a "joint work" (or other term of
similar import) under Title 17 of the Unites States Code or other applicable
law.

                (F)     King shall limit its statements, discussions, and claims
regarding the Product, including those as to safety and efficacy, to those that
are consistent with the Product Labeling and the Product Promotional Materials,
and shall ensure the King Sales Force does not make any representation,
statement, warranty or guaranty with respect to the Product that is deceptive or
misleading, or that disparages the Product or the good name, goodwill or
reputation of Ligand. King shall not add, delete, modify or distort claims of
safety or efficacy while conducting Product Calls, nor make any changes in the
Product Promotional Materials. The King Sales Force shall conduct Product Calls
in adherence to the terms of this Agreement. Additionally, the King Sales Force
shall conduct Product Calls in compliance with the American Medical Association
Guidelines on Gifts to Physicians from Industry and other applicable law. King
shall limit its activities under this Agreement to conducting Product Calls and
the soliciting of sales for the Product in accordance with the terms and
conditions set forth herein.

                (G)     During the term of this Agreement, King shall not,
directly or indirectly within the Territory, market, sell, offer for sale,
detail or promote, or perform Product Calls with respect to, any


***Certain information onthis page has been omitted and filed separately with
the Commisssion. Confidential Treatment has been requested with respect to the
omitted portions.


                                       4


other controlled release solid oral dosage formulation containing morphine and
its salts as its sole active ingredient. The parties recognize that the
restrictions contained in this Section 2.2(g) are properly required for the
adequate protection of Ligand's rights hereunder and the goodwill associated
with the Product, and agree that if any provision of this Section 2.2(g) is
determined by a court of competent jurisdiction to be unenforceable, such
restriction shall be interpreted to have the broadest application as shall be
enforceable under applicable law.

        2.3     RESPONSIBILITIES OF LIGAND. Except for the limited, non-
exclusive rightslicensed or granted to King pursuant to the terms of this
Agreement, Ligand shall retain all rights and control in, and with respect to,
the Product, including, but not limited to, the manufacturing, import,
marketing, use, offering, sale and development of the Product. In furtherance
and not in limitation of the foregoing, Ligand shall retain the following
responsibilities, among others set forth in this Agreement, in connection with
the Program:

                (A)     Ligand shall retain control over and make all decisions
with respect to the marketing, planning, and strategy of the Product, and Ligand
shall have the sole right and responsibility for establishing and modifying the
terms and conditions of the sale of the Product, including without limitation,
terms and conditions such as the price at which the Product shall be sold,
whether the Product shall be subject to any discounts, the distribution of the
Product, and whether credit is to be granted or refused in connection with the
sale of any Product. Additionally, Ligand shall be responsible for all
negotiations and contracting with Managed Care Organizations, Hospital Group
Purchasing Organizations, State Medicaid Programs, State Patient Assistance
Programs, Medicare Part D Programs, FSS, PHS or any other public or private
sector reimbursement or purchasing organization, such negotiations and
contracting, if any, to be conducted at Ligand's sole and absolute discretion;
provided that Ligand shall give King reasonable advance notice of any material
change or amendment to any of the foregoing contracts which affect King's
obligations hereunder so that King may adjust its promotional activities
hereunder accordingly.

                (B)      Ligand shall be solely responsible for determining the
content, quantity and the method of distribution of the Product Promotional
Materials.

                (C)     Ligand shall, at its expense, prepare marketing plans
for conducting Product Calls. Ligand shall retain full control of all activities
with respect to the Product, including the preparation and implementation of
marketing plans for conducting Product Calls. Such marketing plans may include
matters such as the following: (1) the level of marketing support for the
Product; (2) establishing a Product Call plan; (3) the lists of Target Accounts
and Target Prescribers; (4) the Product Promotional Materials
(including quantities); and (5) the guidelines for the use of Ligand-supplied
Product Promotional Materials. No Product samples shall be utilized or
distributed in connection with the King Sales Force conducting Product Calls.

                (D)     Ligand shall compensate King for its services in
accordance with the terms of this Agreement.

                (E)     Ligand shall provide King, at Ligand's expense, with all
of the training materials for the Training Program as described in Section
6.2(a) hereof.

                (F)     Ligand shall be responsible for any expenses associated
with its own sales force, including any meeting attendance or coordinated
activities between the parties and their respective sales forces.

                (G)    At monthly intervals beginning with the Product Call
Commencement Date, Ligand shall, at its cost and expense, submit to King or
cause to be submitted to King payer data as well


                                       5


as IMS Prescriber Data for the immediately preceding one (1) month period, as
such data becomes available.

                (H)     If any state taxing authorities determine that sales or
excise taxes are applicable to King's services performed hereunder, King shall
properly accrue and Ligand shall pay such sales or excise taxes to the
appropriate states. In addition, Ligand shall be responsible for the payment of
any applicable use taxes related to the supply to King hereunder of Product
Promotional Materials.

                (I)     Ligand shall maintain all regulatory approvals required
in order to market the Products in the Territory and shall comply in all
material respects with all laws and regulations applicable to the conduct of
Ligand's business pursuant to this Agreement, including, without limitation, all
applicable requirements under the Act.

                (J)     Ligand shall promptly provide King with copies of all
written notices and other material written communications from the FDA and/or
any other regulatory agencies that may affect King's ability or right to
undertake the Product Calls contemplated by this Agreement.

        2.4     ORDERS FOR THE PRODUCT. Ligand shall, in a manner consistent
with its contractual commitments, be exclusively responsible for accepting and
filling purchase orders for the Product, and for processing billing and returns
with respect to the Product. If King receives an order for the Product, it shall
promptly transmit such order to Ligand for acceptance or rejection, which
acceptance or rejection shall be at Ligand's sole discretion. At no time shall
King have any power or authority to accept or reject orders on behalf of Ligand,
nor shall King represent explicitly or implicitly to any third party that it has
such authority.

                                   ARTICLE 3
                                  COMPENSATION

        3.1     FEES. In consideration for King conducting Product Calls in the
manner set forth in this Agreement, and performing the general services required
hereunder, all as set forth in this Agreement, and in accordance with the terms
and conditions set forth herein, Ligand shall pay to King:

                (A)     a base fee, which shall not include expenses or other
reimbursements due to King pursuant to Section 3.1(b) below, in an amount equal
to [***] ([***])***Certain information on this page has been omitted and filed
separately with the Commission. Confidential treatment has been requested with
respect to the omitted portions. per PDE (the "PROGRAM FEE") performed by King
during the term of this Agreement, which shall be paid to King in accordance
with the payment schedule set forth in Section 3.2 hereinbelow; and

                (B)     all expenses incurred and paid by King in connection
with King's marketing related activities, including, but not limited to,
expenses incurred and paid by King in connection with breakfast, lunch, and
dinner meetings and speaker programs; PROVIDED THAT (1) King shall use its
commercially reasonable efforts to utilize existing resources available from
Ligand to plan and execute such activities, and (2) such expenses shall not
include any expenses for which King is responsible pursuant to Sections 2.2 or
6.1 of this Agreement. All such expenses incurred by King in making Product
Calls shall be reported to Ligand on a monthly basis for reimbursement as set
forth in Section 3.2 below.


***Certain information onthis page has been omitted and filed separately with
the Commisssion. Confidential Treatment has been requested with respect to the
omitted portions.


                                       6


        3.2     PAYMENT SCHEDULE; QUARTERLY AND MONTHLY INVOICES. The Program
Fee shall be invoiced on a quarterly basis to Ligand. The expenses for which
King seeks reimbursement from Ligand pursuant to Section 3.1(b) above shall be
invoiced on a monthly basis to Ligand. Each invoice for the Program Fee shall
contain the number PDEs performed during each applicable month covered by such
invoice multiplied by the base fee per PDE. Each invoice seeking expense
reimbursement from Ligand shall (i) describe in reasonable detail all expenses
for which King seeks reimbursement from Ligand pursuant to Section 3.1(b) in
connection with conducting Product Calls, and (ii) be accompanied by reasonable
documentation supporting such expenses. All invoices submitted to Ligand by King
under this Agreement shall be accompanied by a good faith certification that the
amounts claimed thereunder are accurate.

        3.3     RECORDS; MONTHLY REPORTS. King shall keep complete and accurate
records in sufficient detail of the number and type of Product Calls conducted
hereunder during the term of this Agreement and for a one-year period following
the expiration or earlier termination of this Agreement and complete and
accurate data collection and reporting systems for Product Calls and PDEs. King
shall determine actual compensation due to King hereunder on a PDE basis through
the use of its current sales force automation program used to track Product
Calls performed hereunder. No later than ten (10) days after the end of each
month during the Program, King shall submit to Ligand a written report and an
electronic file thereof (and substantiation therefor) setting forth the number
and type of Product Calls made by the Representatives and the identity of each
Prescriber to whom such Product Calls were made within the Territory during the
preceding month.

        3.4     AUDITS. Upon the reasonable request of Ligand and no more
frequently than once every six (6) month period, King shall permit Ligand or its
authorized representatives at all reasonable times to (a) have access to the
Product Call records maintained by King and each Representative, and (b) audit
any other records maintained by King in connection with the Program. Any and all
audits undertaken by Ligand pursuant to this Section 3.4 shall be performed at
the sole and exclusive expense of Ligand.

        3.5     PAYMENTS. All payments to be made by Ligand to King pursuant to
this Article 3 shall be made by check or wire transfer, as mutually agreed by
the parties, within thirty (30) days of Ligand's receipt of the invoice from
King. If the payments are to be made by wire transfer, such payments shall be
made to the designated account of King in accordance with wiring instructions to
be provided. At King's election, such amounts shall be paid by Ligand to King in
cash or shall be available to King as a credit to apply against any amounts King
may owe to Ligand and such credit shall be available for such application for a
period of one (1) year after the effective date of expiration or termination of
the term of this Agreement.

        3.6     SCOPE CHANGES IN THE PROGRAM. Except as otherwise provided
herein, in the event that Ligand requests a substantial change in the scope of
the Program or in the services to be performed by King or Representatives
hereunder, King and Ligand shall, in good faith, negotiate appropriate written
contract revisions required by both parties to implement such changes or perform
such additional services.

                                    ARTICLE 4
                    REPRESENTATIONS, WARRANTIES AND COVENANTS

        4.1 REPRESENTATIONS, WARRANTIES AND COVENANTS OF KING.


                                       7


                (A)     King represents, warrants and covenants (1) that King is
duly organized, validly existing, and in good standing under the laws of the
state in which it is incorporated; and (2) that King has the authority to enter
into this Agreement and that it is not bound by any other agreement, obligation
or restriction, and shall not assume any other obligation or restriction or
enter into any other agreement, which would interfere with its obligations under
this Agreement.

                (B)     King represents and warrants that it has the requisite
personnel, facilities, equipment, expertise, experience and skill to perform its
obligations hereunder and to render the services contemplated hereby; and it
covenants that it shall perform the services in a professional, ethical and
competent manner. King further covenants that it shall abide by all laws, rules
and regulations that apply to the performance of the services to be performed by
King and the King Sales Force hereunder (including, without limitation, the
Medicare and Medicaid Anti-Kickback Statute set forth at 42 U.S.C. ss.
1320a-7b(b)), and that in performing the services to be performed hereunder it
shall not, nor shall the Representatives, engage in the counseling or promotion
of a business arrangement or other activity that violates any applicable law.
When on Ligand's premises or a Ligand customer's premises while conducting
Product Calls pursuant to this Agreement, King Representatives shall comply with
all of Ligand's or Ligand customer's policies regarding the conduct of visitors
which have been provided to King in advance.

                (C)     Nothing in this Agreement shall be deemed to authorize
King or its Affiliates to act for, represent or bind Ligand or any of its
Affiliates other than as specifically provided by this Agreement.

        4.2      REPRESENTATIONS, WARRANTIES AND COVENANTS OF LIGAND.

                (A)     Ligand represents, warrants and covenants (1) that
Ligand is duly organized, validly existing, and in good standing under the laws
of the state in which it is incorporated; and (2) that Ligand has the authority
to  enter into this Agreement and that it is not bound by any other agreement,
obligation or restriction, and shall not assume any other obligation or
restriction or enter into any other agreement, which would interfere with its
obligations under this Agreement.

                (B)     Ligand covenants that it shall abide by all laws, rules
and regulations that apply to its obligations hereunder.

                (C)     Ligand represents and warrants to King that Ligand has
all necessary authority and right, title and interest in and to any copyrights,
trademarks, trade secrets, patents, inventions, know-how and developments
related to the Product which right, title and interest is necessary to the
making, use, sale, offering for sale or promotion of the Product in the
Territory.

                (D)     Ligand represents and warrants to King that Ligand
possesses good title to the Product Trademarks, free and clear of any claims or
encumbrances and that none of said trademarks have been transferred or assigned.

        4.3      DISCLAIMER.

         EXCEPT AS EXPRESSLY SET FORTH HEREIN, ALL OTHER WARRANTIES, CONDITIONS
AND REPRESENTATIONS, EXPRESS OR IMPLIED, STATUTORY OR OTHERWISE, INCLUDING A
WARRANTY AS TO THE QUALITY OR FITNESS FOR ANY PARTICULAR PURPOSE, ARE HEREBY
EXCLUDED AND DISCLAIMED BY EACH PARTY AND THEIR RESPECTIVE AFFILIATES.


                                       8


                                   ARTICLE 5
                     STATUS OF KING AND THE REPRESENTATIVES

        5.1     KING AS INDEPENDENT CONTRACTOR. King is being retained and shall
perform hereunder strictly as an "independent contractor." Employees and
Representatives of King performing services hereunder shall not be, and shall
not be consideredto be, employees of Ligand for any purpose. Neither party
hereto shall have any responsibility for the hiring, termination, compensation,
benefits or other conditions of employment of the other party's employees.

        5.2     NO LIGAND BENEFITS. Employees and Representatives of King are
not eligible to participate in any benefits programs offered by Ligand to its
employees, or in any pension plans, profit sharing plans, insurance plans or any
other employee benefits plans offered from time to time by Ligand to its
employees. King acknowledges and agrees that Ligand does not, and shall not,
maintain or procure any workers' compensation or unemployment compensation
insurance for or on behalf of King's employees. King acknowledges and agrees
that it shall be solely responsible for paying all salaries, wages, benefits and
other compensation which its employees may be entitled to receive in connection
with the performance of the services hereunder.

        5.3     NO JOINT VENTURE. Nothing contained in this Agreement shall be
construed as making the parties joint venturers or, except as otherwise
expressly provided herein, as granting to either party the authority to bind or
contract any obligations in the name of or on the account of the other party or
to make any guarantees or warranties on behalf of the other party.

                                   ARTICLE 6
                           TRAINING AND SALES MEETINGS

        6.1     TRAINING EXPENSES. King shall plan, manage and pay for all
travel, living and other expenses of the King Sales Force and any other
employees of King associated with the training of the King Sales Force. Ligand
shall plan, manage and pay for all travel, living and other expenses of any
Ligand employees associated with the training of the King Sales Force. King
shall plan, manage and pay for conference room and other meeting space expenses
associated with the training of the King Sales Force.

        6.2      TRAINING PROGRAMS.

                (A)     King will work together with Ligand to organize a
training program for the King Sales Force to conduct Product Calls
(the "TRAINING PROGRAM"). Ligand shall provide, at its own expense, all training
materials as well as reasonable cooperation, time and guidance of Ligand's
employees as necessary or appropriate to conduct the Training Program to fully
train the King Sales Force to properly conduct Product Calls.

                (B)      The Training Programs shall be held at the following
[***]([***]) ***Certain information on this page has been omitted and filed
separately with the Commission. Confidential treatment has been requested with
respect to the omitted portions. locations on the following dates:

                (i)      [***]



***Certain information onthis page has been omitted and filed separately with
the Commisssion. Confidential Treatment has been requested with respect to the
omitted portions.


                                     9


                (ii)     [***]

                (C) Any other Training Programs shall take place at such time
and at such locations as mutually acceptable to both parties.


                                   ARTICLE 7
                    TRADEMARKS; INTELLECTUAL PROPERTY RIGHTS

        7.1      THE PRODUCT.  Product Calls shall be conducted by King under
the Product Trademarks.

        7.2     LICENSE. Ligand hereby grants to King a limited, non-exclusive,
fully paid right and license under all applicable patents, patent applications
and trademarks owned or controlled by Ligand, which are necessary in order for
King to conduct Product Calls contemplated hereunder during the Term. Subject to
the foregoing license, this Agreement does not constitute a grant to King of any
property right or interest in the Product, or the trademarks, patents or patent
applications associated or used in connection therewith or any other trademarks
which Ligand owns or controls or any patents, patent rights or any other
intellectual property.



                                   ARTICLE 8
                     COMMUNICATIONS; MONITORING THE PROGRAM

        8.1     COMMUNICATIONS WITH THIRD PARTIES. King shall communicate to
Ligand all written and material oral comments, statements, requests and
inquiries of the medical profession or any other third parties relating to the
Product or the marketing thereof that are received by King which the
Representatives are unable to answer. All responses to the medical profession or
such other third parties shall be handled solely by Ligand. King shall provide
reasonable assistance to Ligand to the extent deemed necessary by Ligand to
fully respond to such communications.

        8.2     GOVERNMENT AGENCIES. All responses to government agencies
concerning the Product or the marketing thereof, shall be the sole
responsibility of Ligand, except to the extent any notice with respect to PDMA
compliance is directed to King. King shall assist Ligand with respect to
communications from government agencies to the extent deemed reasonably
necessary by Ligand to fully respond to such communications.

        8.3     CUSTOMER COMMUNICATIONS. King shall assist Ligand with respect
to sales promotion and customer communications (as requested by Ligand) within
the Territory and shall keep Ligand advised of market, economic, regulatory and
other developments which may affect the sale of the Product in the Territory.



                                   ARTICLE 9
                 ADVERSE EVENT REPORTING AND REGULATORY MATTERS

        9.1     PROMPT NOTIFICATION TO THE OTHER PARTY. Each party shall
promptly notify the other party of any adverse event reports associated with the
use of the Product that comes to such party's


                                       10


attention, and provide a copy to the other party of any information that such
party obtains or receives concerning the Product or package complaint.

        9.2    EPORTING RESPONSIBILITIES. Ligand shall be solely responsible for
recording, evaluating, summarizing and reviewing all adverse drug experiences
associated with the Product, and timely reporting all such information to the
FDA and any other applicable regulatory authority in accordance with applicable
laws, regulations and guidelines.



                                   ARTICLE 10
                                RETURNS; RECALLS

        10.1     RETURNED OR RECALLED PRODUCTS.

                (A) RETURNS. Any of the Product returned to King shall, at
Ligand's expense, be shipped to the facility designated by Ligand, with any
shipping or other documented direct cost to be paid by Ligand. King shall advise
the customer who made the return that the Product has been returned to Ligand,
but shall take no other actions with respect to such return without the prior
written consent of Ligand.

                (B) RECALLS, MARKET WITHDRAWALS AND STOCK RECOVERIES. Ligand
shall be solely responsible for obtaining and receiving any Product that has
been the subject of a recall, market withdrawal or stock recovery, and any and
all costs and expenses relating thereto.



                                   ARTICLE 11
                                 CONFIDENTIALITY

        11.1    LIGAND CONFIDENTIAL INFORMATION. King acknowledges and agrees
that it shall have access to, or become acquainted with, Ligand Confidential
Information in the course of performance of the services required under this
Agreement. For the purposes of this Agreement, the "LIGAND CONFIDENTIAL
INFORMATION" shall mean any information (whether oral or written or otherwise in
tangible or intangible form) of Ligand or any Affiliate thereof, whether or not
developed by King, including but not limited to, any and all information which
relates in any way to the Product, the Product IP, the Program, Prescribers,
ideas, designs, methods, discoveries, improvements, documents or other results
of the services to be rendered hereunder, trade secrets, proprietary rights,
business affairs, marketing strategies or information, customer information or
employee information. Ligand Confidential Information shall not include
information that:

                (A)      is, at the time of disclosure, in the public knowledge;

                (B)     becomes part of the public knowledge after disclosure,
by publication orotherwise, except by breach of this Agreement or other
obligation of confidentiality owed to Ligand;

                (C)     is demonstrably in King's possession at the time of
disclosure by Ligand and which was not acquired, directly or indirectly, from
Ligand or any third party which was, at the time of such acquisition, subject to
an obligation of confidentiality owed to Ligand; or


                                       11


                (D)     is received by King from third parties, provided such
information was not obtained, directly or indirectly, from Ligand or any third
party which was, at the time such information was obtained, subject to an
obligation of confidentiality owed to Ligand.

        11.2    CONFIDENTIALITY OBLIGATIONS OF KING. King acknowledges and
agrees that the Ligand Confidential Information constitutes valuable trade
secrets of Ligand. King shall keep all Ligand Confidential Information in
confidence and shall not, at any time during or after the term of this
Agreement, without Ligand's prior written consent, disclose or otherwise make
available, directly or indirectly, any item of the Ligand Confidential
Information to anyone other than King employees and Representatives who need to
know the same in the performance of the services hereunder except, however, to
the extent, and only to the extent, required by law. King, its employees and
Representatives, shall use the Ligand Confidential Information only in
connection with the performance of the services hereunder and for no other
purpose. King shall inform its employees and Representatives of the trade
secret, proprietary and confidential nature of the Ligand Confidential
Information and their obligation to use the Ligand Confidential Information only
for such purposes as King is entitled to use it hereunder. The standard of care
required of King in protecting the confidentiality of the Ligand Confidential
Information shall be the same standard of care used by King in protecting its
own confidential information of a similar nature, PROVIDED that in no event
shall King use less than a reasonable standard of care.

        11.3    RETURN OF CONFIDENTIAL INFORMATION BY KING. Upon written request
by Ligand, King agrees to promptly, and in any event not more than thirty
(30)days following receipt of said request, return to Ligand any and all Ligand
Confidential Information; provided that King shall be entitled to retain one
copy for its legal records.

        11.4    EXTRAORDINARY RELIEF. King acknowledges that irreparable damage
would result in the event King breaches any of the provisions of this Article 11
and that money damages would not be a sufficient remedy for any such breach.
Accordingly, in the event of the actual or threatened breach by King of any of
the terms of this Article 11, Ligand shall have the right to seek specific
performance and injunctive relief. The rights granted under this paragraph are
in addition to all other remedies and rights available at law or in equity.

        11.5     KING CONFIDENTIAL INFORMATION. Ligand acknowledges and agrees
that during the term of this Agreement it may receive, have access to or become
privy to the King Confidential Information. For the purposes of this Agreement,
the "KING CONFIDENTIAL INFORMATION" shall mean any information (whether oral or
written or otherwise in tangible or intangible form) of King or any Affiliate
thereof, including, without limitation, certain proprietary or confidential
information or know-how with respect to King's performance of contract detailing
services hereunder, ideas, designs, methods, documents or other results of
services to be rendered hereunder, trade secrets, business affairs, marketing
strategies or information, client information or employee information. King
Confidential Information shall not include information that:

                (A)     is, at the time of disclosure, in the public knowledge;

                (B)     becomes part of the public knowledge after disclosure,
by publication or otherwise, except by breach of this Agreement or other
obligation of confidentiality owed to King;

                (C)     is demonstrably in Ligand's possession at the time of
disclosure by King and which was not acquired, directly or indirectly, from King
or any third party which was, at the time of such acquisition, subject to an
obligation of confidentiality owed to King; or


                                       12


                (D)     is received by Ligand from third parties, provided, such
information was not obtained, directly or indirectly, from King or any third
party which was, at the time such information was obtained, subject to an
obligation of confidentiality owed to King.

        11.6    CONFIDENTIALITY OBLIGATIONS OF LIGAND. Ligand acknowledges and
agrees that the King Confidential Information constitutes valuable trade secrets
of King. Ligand shall keep all King Confidential Information in confidence and
shall not, at any time during or after the term of this Agreement, without
King's prior written consent, disclose or otherwise make available, directly or
indirectly, any item of the King Confidential Information to anyone other than
Ligand employees and representatives who need to know the same in the
performance of the services hereunder except, however, to the extent, and only
to the extent,required by law. Ligand, its employees and representatives, shall
use the King Confidential Information only in connection with the performance of
the services hereunder and for no other purpose. Ligand shall inform its
employees andrepresentatives of the trade secret, proprietary and confidential
nature of the King Confidential Information and their obligation to use the King
Confidential Information only for such purposes as Ligand is entitled to use it
hereunder. The standard of care required of Ligand in protecting the
confidentiality of the King Confidential Information shall be the same standard
of care used by Ligand in protecting its own confidential information of a
similar nature, PROVIDED that in no event shall Ligand use less than a
reasonable standard of care.

        11.7    RETURN OF CONFIDENTIAL INFORMATION BY LIGAND. Upon written
request by King, Ligand agrees to promptly, and in any event not more than
thirty (30) days following receipt of said request, return to King any and all
King Confidential Information; provided that Ligand shall be entitled to retain
one copy for its legal records.

        11.8    EXTRAORDINARY RELIEF. Ligand acknowledges that irreparable
damage would result in the event Ligand breaches any of the provisions of this
Article 11 and that money damages would not be a sufficient remedy for any such
breach. Accordingly, in the event of the actual or threatened breach by Ligand
of any of the terms of this Article 11, King shall have the right to seek
specific performance and injunctive relief. The rights granted under this
paragraph are in addition to all other remedies and rights available at law or
in equity.

        11.9    PUBLIC ANNOUNCEMENTS. Any public announcements or similar
publicity with respect to this Agreement or the transaction contemplated herein,
including, without limitation, any promotional or similar literature prepared by
or on behalf of King, shall be at such time and in such manner and content as
the parties shall both agree in writing, provided that nothing herein shall
prevent either party from, upon notice to and an opportunity to review by the
other party, making such public announcements as such party's legal obligation
requires.



                                   ARTICLE 12
                                TERM; TERMINATION

        12.1    TERM OF THE AGREEMENT. The initial term of this Agreement shall
commence as of the Effective Date, and shall continue for a period of six (6)
months following the Product Call Commencement Date (or for a longer period of
time if mutually agreed upon by the parties in writing), unless earlier
terminated by either party pursuant to the provisions of this Article
12. Following the initial term, Ligand shall have the option to extend the term
of this Agreementfor one (1) additional one-month


                                       13


period during which period King shall deliver a minimum of [***] ***Certain
information on this page has been omitted and filed separately with the
Commission. Confidential treatment has been requested with respect to the
omitted portions. PDEs. Such option shall be exercisable by Ligand giving King
written notice at least 10 days prior to the expiration of the initial term of
this Agreement. Thereafter, the term of this Agreement may only be extended by
mutual written agreement of the parties.

        12.2    TERMINATION FOR BREACH. Either party shall have the right to
terminate this Agreement upon the material breach of any of the terms and
conditions of this Agreement by the other party if such breach is not cured
within thirty (30) days after the breaching party's receipt of written notice
from the other party specifying the nature of such breach.

        12.3     TERMINATION BY EITHER PARTY.  Either party shall have the right
to terminate this Agreement as follows:

                (A)     At any time, upon notice of not less than thirty (30)
days, PROVIDED that neither party may terminate this Agreement under this
Section 12.3(a) until the earlier of (i) the closing of the transactions
contemplated by the definitive agreement between King and Ligand executed
concurrently herewith for the purchase and sale of all rights to Avinza(R) in
the Territory (the "DEFINITIVE AGREEMENT"), or (ii) the expiration or earlier
termination (by its terms) of the Definitive Agreement, as applicable; or

                (B)     Immediately, upon notice, in the event that FDA
withdraws any required approvals necessary to conduct the Program.

        12.4    TERMINATION BY LIGAND. Ligand shall have the right to
immediately terminate this Agreement upon written notice to King as a
consequence of the occurrence of the violation of the Medicare and Medicaid
Anti-Kickback Statute (42 U.S.C ss.1320(a) - 7b(b)) by King or any of the
Representatives who render services under this Agreement.

        12.5     BANKRUPTCY;  INSOLVENCY.  Either party may terminate  this
Agreement upon the occurrence of either of the following:

                (A)     The entry of a decree or order for relief by a court of
competent jurisdiction in respect of the other party in an involuntary case
under the Federal Bankruptcy Code, as now constituted or hereafter amended, or
any other applicable federal or state insolvency or other similar law and the
continuance of any such decree or order unstayed and in effect for a period of
sixty (60) consecutive days; or

                (B)     The filing by the other party of a petition for relief
under the Federal Bankruptcy Code, as now constituted or hereafter amended, or
any other applicable federal or state insolvency or similar law.

        12.6    AUTOMATIC TERMINATION. This Agreement shall automatically
terminate without any further action of any party to this Agreement upon the
closing of the transactions contemplated by the Definitive Agreement.




***Certain information onthis page has been omitted and filed separately with
the Commisssion. Confidential Treatment has been requested with respect to the
omitted portions.


                                       14


        12.7     CONSEQUENCES OF TERMINATION.

                (A)     In the event that this Agreement is terminated pursuant
to Section 12.3 or Section 12.4 hereof, at Ligand's request, the parties shall
discuss in good faith the expeditious winding-down of the Program.

                (B)     The termination of this Agreement shall not affect
Ligand's obligation to pay any amount of the Program Fee properly due and
payable under the provisions of this Agreement through the effective date of
such termination (with payment of amounts due attributable to periods prior to
the effective date of such termination being made on the earlier of the
applicable dates established pursuant to Article 3 or on the effective date of
such termination).

                (C)     Ligand shall pay or reimburse King for all outstanding
costs and expenses properly due and payable under Article 3 (with payment of
amounts due attributable to periods prior to the effective date of such
termination being made on the earlier of the applicable dates established
pursuant to Article 3 or on the effective date of such termination).

                (D)     The termination of this Agreement shall not affect any
rights or obligations of the parties under this Agreement which by their terms
are intended to survivesuch termination.

                (E)      In the event that Ligand terminates this Agreement
pursuant to Section 12.3(a) or King shall terminate this Agreement pursuant to
Section 12.2, Ligand shall, in addition to the payments to be made pursuant to
Section 12.7(c), reimburse King for noncancelable ordinary, necessary and
reasonable expenses incurred and paid by King in connection with King's
performance of its obligations under this Agreement, or reasonably and
irrevocably committed to and yet unpaid by King as of the effective date of such
termination. By not later than thirty (30) days following the effective date of
the termination of this Agreement by Ligand pursuant to Section 12.3(a), King
shall provide to Ligand a written accounting of the above-described expenses,
together with reasonable documentation in support thereof
(the "EXPENSE STATEMENT"), and, unless suchamounts are disputed in good faith by
Ligand pursuant to Section 14.13 below, (1) Ligand's payment of any applicable
expense reimbursement due hereunder shallbe based thereon and (2) Ligand shall
pay all amounts contained in the Expense Statement within thirty (30) days of
its receipt of such Expense Statement from King.

                (F)     Upon termination of this Agreement for any reason, King
shall return to Ligand all Product Promotional Materials within thirty (30) days
following the termination, and, for the avoidance of doubt, unless otherwise
agreed between the parties as set forth in Section 12.7(a), the license granted
by Ligand to King pursuant to Section 2.1 hereof, including, but not limited to,
the right to use all Product IP, shall automatically immediately terminate.



                                   ARTICLE 13
                                 INDEMNIFICATION

        13.1    INDEMNIFICATION BY KING. King shall indemnify, defend and hold
Ligand and its Affiliates and their respective directors, officers, employees,
agents, successors and assigns harmless from and against any and all losses,
claims, suits, actions, damages, assessments, interest charges, penalties, costs
and expenses (including reasonable attorneys' fees) (hereinafter collectively,
the "INDEMNIFIED AMOUNTS"), arising out of (a) the breach by King of any of its
representations, warranties or covenants in this Agreement, (b) a negligent or
willful act or omission on the part of King or any of its directors, officers,
agents, employees or Representatives, or (c) any claims brought by or on behalf
of any member of the King Sales Force in connection with his or her employment
or retention by King or the


                                       15


performance of King's obligations under this Agreement, except, in each case, to
the extent such Indemnified Amounts are covered by Ligand's indemnification of
King pursuant to Section 13.2. The indemnification obligations of King shall
survive the expiration or termination of this Agreement.

        13.2    INDEMNIFICATION BY LIGAND. Ligand shall indemnify, defend and
hold King and its Affiliates and their respective directors, officers,
employees, agents, successors and assigns harmless from and against any and all
Indemnified Amounts, arising out of (a) the ordering, use or sale of the
Product, (b)manufacturing, distribution or design defect of the Products,
(c) the preparation and implementation of the marketing plans for conducting
Product Calls, (d) a strict liability claim arising out of Ligand's failure to
warn, (e)the Product Promotional Materials, (f) a negligent or willful act or
omission onthe part of Ligand or any of its directors, officers, agents or
employees, (g)any Ligand violation of the PDMA, (h) any violation of the
Medicare or Medicaid Anti-Kickback Statute (42 U.S.C. ss. 1320(a)-7b(b)) by
Ligand or any of its directors, officers, agents or employees, (i) any
unlawful actions taken by Ligand with respect to King employees, (j) the breach
by Ligand of any of its representations, warranties or obligations hereunder, or
(k) any violation or infringement upon any trademark, tradename, copyright,
patent or other rights held by any person or entity in the making, use, sale,
offering for sale or promotion of the Product in the Territory, except to the
extent such Indemnified Amounts arise from King's breach of its obligations
hereunder, or a negligent or wrongful act or omission of King. The
indemnification obligations of Ligand above shall survive the expiration or
termination of this Agreement.

        13.3    INDEMNIFICATION PROCEDURES. A party (the "INDEMNITEE") which
intends to claim indemnification under this Article 13 shall promptly notify the
other party (the "INDEMNITOR") in writing of any action, claim or liability in
respect of which the Indemnitee or any of its directors, officers, employees or
agents intend to claim such indemnification, PROVIDED that the failure to
provide timely notice to the Indemnitor shall not release the Indemnitor from
any liability to the Indemnitee to the extent the Indemnitor is not prejudiced
thereby. Upon delivery of written notice within fifteen (15) days after such
notification is delivered by the Indemnitee to the Indemnitor, the Indemnitee
shall permit, and shall cause its employees and agents to permit, the Indemnitor
to assume the defense of any such action or claim with qualified counsel at the
Indemnitor's sole cost and expense, PROVIDED, HOWEVER, that if there exists or
is reasonably likely to exist a conflict of interest that would make it
inappropriate in the judgment of the Indemnitee in its reasonable discretion for
the same counsel to represent both the Indemnitee and the Indemnitor, the
Indemnitee shall be able to obtain its own counsel at the expense of the
Indemnitor. If the Indemnitor does not deliver written notice to the Indemnitee
of its intent to assume control of such defense within such fifteen (15) day
period, the Indemnitee may assume such defense with qualified counsel if its
choice at the sole cost of the Indemnitor. If the Indemnitor assumes such
defense hereunder, the Indemnitee may participate in such defense through
counsel of its own selection at the Indemnittee's sole cost and expense. Neither
party shall settle any such claim or dispute without the other party's prior
written consent, which consent shall not be unreasonably withheld or delayed;
PROVIDED that the Indemnitee shall be deemed to have granted such consent if
such settlement does not impose any obligation or liability on the Indemnitee
which cannot be assumed and performed in full by the Indemnitor or such
settlement involves only the payment of money by the Indemnitor or its insurer.
The Indemnitor shall not be responsible for any attorneys' fees or other costs
incurred other than as provided in this Agreement. The Indemnitee, its employees
and agents, shall provide reasonable and good faith assistance to the Indemnitor
and its legal representatives in the investigation and defense of any action,
claim or liability covered by this indemnification.



                                       16


                                   ARTICLE 14
                            MISCELLANEOUS PROVISIONS

        14.1    FORCE MAJEURE. Failure of either party hereto to fulfill or
perform its obligations under this Agreement shall not subject such party to any
liability if such failure is caused or occasioned by, without limitation, acts
of God, acts of the public enemy, fire, explosion, flood, drought, war, riot,
sabotage, embargo, strikes or other labor disputes (which strikes or disputes
need not be settled), compliance with any order, regulation, or request of
government or by any other event or circumstance of like or different character
to the foregoing beyond the reasonable control and without the fault or
negligence of such party (a "FORCE MAJEURE Event"), provided such party uses
commercially reasonable efforts to remove such Force Majeure Event and commence
performance hereunder as soon as possible following the removal of such Force
Majeure Event and gives the other party prompt notice of the existence of such
Force Majeure Event.

        14.2    NOTICES. Unless otherwise specified herein, all notices required
or permitted to be given under this Agreement shall be in writing and shall be
delivered personally or sent by registered or certified mail, return receipt
requested, or by a nationally recognized overnight courier service, and shall be
deemed to have been given upon mailing. Any such notices shall be addressed to
the receiving party at such party's address set forth below, or at such other
address as may from time to time be furnished by similar notice by either party:

        IF TO LIGAND:      Ligand Pharmaceuticals Incorporated
                           10275 Science Center Drive
                           San Diego, CA 92121
                           Attention: General Counsel


        IF TO KING:       King Pharmaceuticals, Inc.
                          501 Fifth Street
                          Bristol, TN 37620
                          Attention: General Counsel


        14.3    ENTIRE AGREEMENT; MODIFICATION. This Agreement, including the
exhibits hereto, contains the entire Agreement between the parties with respect
to the subject matter hereof and supersedes all previous Agreements,
negotiations, commitments and writings between the parties hereto with respect
of the subject matter hereof, and may not be changed or modified in any manner
unless in writing and signed by a duly authorized officer or representative of
each of the parties hereto.

        14.4    SEVERABILITY. If any provision of this Agreement or any other
document delivered under this Agreement is prohibited or unenforceable in any
jurisdiction, it shall be ineffective in such jurisdiction only to the extent of
such prohibition or unenforceability, and such prohibition or unenforceability
shall not invalidate the balance of such provision to the extent it is not
prohibited or enforceable nor the remaining provisions hereof, nor render
unenforceable such provision in any other jurisdiction, unless the effect of
rendering such provision ineffective would be to substantially deviate from the
expectations and intent of the respective parties in entering into this
Agreement. In the event any provisions of this Agreement shall be held to be
invalid, illegal or unenforceable, the parties hereto shall use best efforts to
substitute a valid, legal and enforceable provision which, insofar as practical,
implements the purposes hereof.


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        14.5    NO WAIVER; CUMULATIVE REMEDIES. No failure or delay on the part
of either party in exercising any right, power or remedy hereunder shall operate
as a waiver thereof; nor shall any single or partial exercise of any such right,
power or remedy preclude any other or further exercise thereof or the exercise
of any other right, power or remedy hereunder. No waiver of any provision hereof
shall be effective unless the same shall be in writing and signed by the party
giving such waiver. The remedies herein provided are cumulative and not
exclusive of any remedies provided by law.

        14.6    PUBLIC ANNOUNCEMENTS. Any public announcements or similar
publicity with respect to this Agreement or the transaction contemplated herein,
including, without limitation, any promotional or similar literature prepared by
or on behalf of King, shall be at such time and in such manner and content as
the parties shall both agree in writing, provided that nothing herein shall
prevent either party from, upon notice to and an opportunity to review by the
other party, making such public announcements as such party's legal obligation
requires.

        14.7    HEADINGS. All article and section headings are for reference
purposes only and shall not in any way affect the meaning or interpretation of
this Agreement.

        14.8    SCHEDULES. All schedules referred to herein form an integral
part of this Agreement and are incorporated into this Agreement by such
reference.

        14.9     GOVERNING LAW. This Agreement  shall be governed,  construed
and interpreted in accordance with the laws of the State of New York, without
giving effect to choice of law rules.

        14.10   COUNTERPARTS. This Agreement and any amendment or supplement
 hereto may be executed in several counterparts, each of which shall be deemed
an original, and all of which taken together shall constitute one and the same
instrument.

        14.11   WAIVER. The waiver by any party of any breach of any covenant,
agreement,representation or warranty contained herein shall not be a waiver of
any other default concerning the same or any other covenant, agreement,
representation orwarranty contained herein. A party's waiver of a default or
breach on the part of King shall not constitute a waiver of any other default;
but shall constitutea waiver of only the particular breach or default then
involved.

        14.12   ASSIGNMENTS. Neither party shall be permitted to assign or
sub-license this Agreement or any of its rights or obligations under this
Agreement without the other party's prior written consent. Any such purported
assignment or sub-license in violation of this Agreement shall be null and void
AB INTITIO.

        14.13   DISPUTE RESOLUTION. If a dispute or controversy regarding any
matter under this Agreement arises between the parties which they are unable to
resolve, each of the parties shall (subject to any applicable cure period as set
forth in this Agreement) be entitled to submit to the other party written notice
of such dispute, which shall set forth in reasonable detail the nature of the
dispute. For a period of thirty (30) days after the date of the receiving
party's receipt of such dispute notice, the parties shall seek to resolve such
dispute by good faith negotiation. If at the end of such thirty (30) day period
the dispute remains unresolved, the parties may seek relief for such dispute
using any appropriate administrative or judicial mechanism which may be
available. The provisions of this Section 14.13 shall survive the termination of
this Agreement and shall not restrict in any way the parties' rights to seek
preliminary injunctive or other equitable relief from any court having
jurisdiction.

                        [NEXT PAGE IS THE SIGNATURE PAGE]

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         IN WITNESS WHEREOF, the parties, by their duly authorized
representatives, have executed this Contract Sales Force Agreement as of the
date first set forth above.



         KING PHARMACEUTICALS, INC.


         By: /S/ BRIAN A. MARKISON
            -----------------------------------------

         Name:    BRIAN A. MARKISON
              ---------------------------------------

         Title: PRESIDENT & CEO



         LIGAND PHARMACEUTICALS INCORPORATED


         By: /S/ HENRY F. BLISSENBACH
            --------------------------------------------------

         Name: HENRY F. BLISSENBACH
              ---------------------------------------

         Title: CHAIRMAN & CEO








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