Document:

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                                                                   EXHIBIT 10.14

                              EMPLOYMENT AGREEMENT

THIS AGREEMENT ("Agreement"), effective as of the 1st day of March, 2001 is made
and entered into by and between AtheroGenics, Inc., a Georgia corporation
(hereinafter called "the Employer"), and Russell M. Medford, M.D., a resident of
the State of Georgia, (hereinafter the "Executive").

                                   WITNESSETH:

WHEREAS, the Executive is qualified to serve, and has been serving, as President
and Chief Executive Officer of the Employer for a period in excess of 4 years in
a highly satisfactory manner; and

WHEREAS, the Employer and the Executive mutually desire that the Executive's
employment be continued; and

WHEREAS, the Executive and the Employer mutually desire to renegotiate the terms
of said employment and to enter into an employment contract which will supersede
any prior contracts.

NOW, THEREFORE, in consideration of the promises and the mutual covenants and
agreements herein contained, the parties hereto agree as follows:

1.   PERIOD OF EMPLOYMENT.

    In exchange for the Compensation, Benefits and Perquisites described in this
Agreement, and upon such other terms and conditions hereinafter set forth, the
Employer agrees to employ the Executive for the Period of Employment. For
purposes of this Agreement, the Period of Employment shall commence as of the
effective date of this Agreement and shall consist of a period of three (3)
years, unless it is terminated earlier as provided in this Agreement. It is the
intention of the parties that upon the second anniversary of the effective date
of the Agreement and each anniversary date thereafter, the Period of Employment
shall be automatically extended by twelve additional calendar months, unless six
(6) months prior to such date, the Employer shall deliver to the Executive or
the Executive shall deliver to the Employer, written notice that the Period of
Employment will end at the expiration of the then existing Period of Employment,
including any extensions, and will not be further extended except by agreement
of the Employer and the Executive.

2.   POSITION AND RESPONSIBILITIES.

    During the Period of Employment, the Executive agrees to serve as the
President and Chief Executive Officer of AtheroGenics, Inc. reporting directly
to the Board of Directors of the Employer (hereinafter "the Board"), and to
perform those functions and duties customarily assigned to individuals serving
in the position in which the Executive serves hereunder.

3.   COMPENSATION, BENEFITS AND PERQUISITES.

     (A) BASE SALARY

         In exchange for the performance of his duties and responsibilities
         hereunder and all other services rendered by the Executive in any
         capacity to the Employer, the Employer agrees to pay base salary ("Base
         Salary") to the Executive at a rate of not less than $275,000 per year.
         For any period thereafter during which this Agreement remains in
         effect, the Executive's Base Salary shall be reviewed based upon an
         annual performance appraisal and competitive market conditions and may
         be increased from time to time by the Employer to reflect the
         Executive's performance and the Employer's profitability. Once
         increased, the Base Salary may not be decreased. Base Salary shall be
         payable according to the customary payroll practices of the Employer.

     (B) INCENTIVE COMPENSATION

         In addition to Base Salary, the Executive shall be eligible to receive
         such annual incentive compensation ("Incentive Compensation") as shall
         be determined by the Board. The amount of such Incentive Compensation
         shall be based upon certain strategic and financial goals, which shall
         be determined by the Executive and the Board of Directors of the
         Employer. Such strategic and financial goals and target Incentive
         Compensation shall be set forth in the Employer's

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         annual budget prior to each year during the term of this Agreement. For
         the first year of this Agreement, the target annual Incentive
         Compensation shall be at least $104,500, or 38% of Base Salary. In
         subsequent years it is anticipated that the target annual Incentive
         Compensation shall be a similar or greater percentage of Base Salary.
         Incentive Compensation shall be payable no later than thirty (30) days
         following the expiration of each year of employment under this
         Agreement.

     (C) EQUITY COMPENSATION

         The Executive shall be eligible to participate in the Employer's Equity
         Ownership Plan and receive such awards of stock and/or options
         thereunder as shall be determined by the Board. The Board will annually
         grant the Executive stock or stock options the value of which will be
         equal to 60% or more of the Executive's then Base Salary. Option value,
         for purposes of the preceding sentence, shall be determined using the
         Black-Scholes option valuation methodology or a similar method.

     (D) BENEFITS AND PERQUISITES

         During the term of this Agreement, the Executive shall be entitled to
         participate, under the terms and conditions thereof, in all employee
         benefit plans or perquisite programs generally available to management
         personnel of the Employer which may be in effect from time to time
         during the term of this Agreement; provided, however, that nothing
         contained herein shall require the Employer to establish, or maintain,
         any such plan. These benefits are provided in accordance with the
         provisions of each individual plan and are listed and described on
         Schedule 1 attached hereto.

     (E) DISABILITY COVERAGE

         In addition to the employee benefit plan coverage provided under
         subsection (d) above, the Executive will be provided with additional
         long term Disability benefits in an amount such that the total annual
         long term Disability benefit payable under both this provision and any
         long-term incentive program or policy maintained by the Employer will
         be equal to 100% of the Executive's annualized Base Salary immediately
         prior to the Disability. The Disability benefit provided will be paid
         from the date of the Disability until the earlier of (i) the
         Executive's death; (ii) the Executive's attainment of age 65; or (iii)
         the date when the long-term disability policy benefits terminate
         pursuant to the terms of that policy.

    The Employer also agrees to provide such other benefits and perquisites
under Subparagraph 3(d) for the first two years that the Executive is receiving
payments under this Subparagraph 3(e), or until such time as the Executive is
eligible to participate in a subsequent employer's benefits program, whichever
is sooner. Thereafter, the Executive shall be permitted to participate in the
Employer's health benefit program at Executive's expense for such time as the
Executive is receiving disability payments.

         For purposes of this Agreement, the term "disability" ("Disability" or
         "Disabled") has the same meaning as provided in the long-term
         disability plan maintained by the Employer. In the event of a dispute,
         the determination of Disability or Disabled shall be made by the Board.
         In the event that the Executive shall dispute the determination of the
         Board of Directors as to the Disability of the Executive, the Executive
         may appeal the determination to a panel of three doctors, one to be
         selected by the Executive, one to be selected by the Board of Directors
         and one to be selected by the doctors chosen by the Executive and the
         Board of Directors. The decision of the panel of doctors shall be
         final. Any termination for Disability under this Agreement shall not
         affect the rights, if any, that the Executive may otherwise have under
         the long-term disability plan the Employer may have in effect at the
         date of such termination and in which the Executive is then
         participating.

     (F) REIMBURSEMENT OF BUSINESS EXPENSES

         The Employer will reimburse the Executive for all reasonable and
         necessary business expenses (including, but not limited to,
         professional and service organization dues, journal subscriptions and
         educational seminars, conferences, symposiums and other meetings) and
         related travel expenses, incurred or expended in connection with the
         performance of his duties and responsibilities as Executive under this
         Agreement.

     (G) FINANCIAL PLANNING ASSISTANCE

         The Employer will provide to the Executive a one-time allowance for
         financial and tax planning assistance a lump sum payment of $25,000.
         The Employer will pay the professional fees and expenses incurred by
         the Executive related to the negotiation and finalization of this
         Agreement, up to the sum of $10,000.00.

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     (H) SIGNING BONUS

         The Employer will provide to the Executive a one-time signing bonus of
         $20,000, payable in a lump sum no later than April 1, 2001.

4.   TERMINATION OF AGREEMENT.

     (A) INVOLUNTARY TERMINATION.

         Except as provided in Subparagraph 4(c), in the event: (i) the Employer
         provides notice to the Executive of its intent to terminate this
         Agreement on account of any Involuntary Termination, (ii) the Executive
         voluntarily terminates as a result of a Constructive Discharge or
         Change of Control, as defined in Subparagraph 4(e), or (iii) the
         Executive separates from service with the Employer, as provided in
         Subparagraph 4(d), as a result of a Disability, as defined in
         Subparagraph 3(e), then the Employer shall pay the Executive any Base
         Salary that was earned through the effective date of his termination
         but which remained unpaid as of that date.

         In addition, the Employer recognizes that the Executive would incur
         substantial damage to personal and professional reputation in the event
         of an Involuntary Termination. Consequently, should such Involuntary
         Termination occur during the Period of Employment, the Employer shall
         pay to the Executive, as liquidated damages, an amount (the "Severance
         Amount") equivalent to two times the sum of Executive's then current
         annualized Base Salary and the pro rata portion of his Incentive
         Compensation otherwise payable to him for the year in which the
         Involuntary Termination occurs. One half (1/2) of the Severance Amount
         shall be paid in a lump sum in cash within thirty (30) days of the date
         of termination of employment and the remaining one-half (1/2) of the
         Severance Amount shall be paid in installments over a two (2) year
         period in the same manner and at the same time that Base Salary would
         have been paid had this Agreement continued.

         The Employer also agrees to provide the welfare benefit plan benefits
         as are described in Subparagraph 3(d) and on Schedule 1 attached hereto
         until the first to occur of (i) the second (2nd) anniversary of the
         Involuntary Termination, or (ii) the date on which the Executive
         commences employment with a new employer and receives employee benefits
         substantially similar to those described on Schedule 1.

         The respective terms and provisions of any other employee benefit or
         perquisite program not specifically enumerated in Schedule 1 shall
         control in the case of an Involuntary Termination.

         Except as provided under this Subparagraph (a), as of the effective
         date of an Involuntary Termination, all other obligations under the
         Agreement shall cease.

         If the Executive's employment terminates due to an Involuntary
         Termination, all unvested stock options granted pursuant to the
         Employer's Equity Ownership Plan (or any successor plans) shall be
         immediately accelerated.

         (B)  VOLUNTARY RESIGNATION.

     Except in the case of a voluntary resignation which results from a
Constructive Discharge or a Change of Control, if the Executive voluntarily
resigns from the positions described in Paragraph 2 during the period in which
this Agreement is in effect, then the Employer shall pay the Executive any Base
Salary which has been earned through the effective date of his termination but
which remains unpaid as of that date. No Incentive Compensation will be paid to
the Executive following the date of a voluntary resignation. The respective
terms and provisions of any other employee benefit or perquisite program shall
control in the case of a voluntary resignation.

         Unless otherwise specifically stated in this Agreement, as of the
         effective date of a voluntary resignation, all obligations under the
         Agreement shall cease.

         The Executive must notify the Board in writing of his intent to
         voluntarily terminate employment at least seven (7) days prior to the
         effective date of such voluntary resignation.

         (C)  TERMINATION FOR CAUSE.

         Notwithstanding any other provision contained in this Agreement, the
         Employer has the right, at any time, to terminate for "cause", as
         defined in Subparagraph 4(e), the employment of the Executive under
         this Agreement. Upon the date of such Termination for Cause, the
         Employer shall cease making any and all payments of Base Salary,
         benefits and perquisites under Subparagraph 3(d) or any other benefit
         referred to in this Agreement, to which the Executive would

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         otherwise be entitled hereunder, except for Base Salary, benefits and
         perquisites under Subparagraph 3(d) or any other benefit which the
         Executive has earned and is entitled to through the date of such
         termination but which remains unpaid (which amounts shall be paid to
         the Executive as soon as practicable following the termination of the
         Executive's employment). No Incentive Compensation will be paid to the
         Executive following the date of a Termination for Cause. The respective
         terms and provisions of any other employee benefit or perquisite
         program shall control in the case of a Termination for Cause.

         Unless otherwise specifically stated in this Agreement, as of the
         effective date of a Termination for Cause, all obligations under the
         Agreement shall cease.

         (D)  DISABILITY.

    In the event the Executive becomes Disabled at any time during the term of
this Agreement, the Employer shall make payments to the Executive in amounts
equal solely to those specified in Subparagraph 3(e) and for the time period
specified in Subparagraph 3(e) reduced by any amounts received under any
disability policy obtained through or maintained by the Employer including any
coverage maintained under Subparagraph 3(e) of this Agreement. Such payments
shall be paid in the same manner and at the same time that Base Salary would
have been paid had this Agreement continued. Notwithstanding the foregoing, the
Executive shall be entitled to the pro rata portion of his Incentive
Compensation with respect to the year in which he became disabled. Such pro rata
portion shall be determined by multiplying (i) the total Incentive Compensation
that the Executive would have received in respect of the year of his Disability
by (ii) the quotient of the number of days in such year prior to his Disability,
divided by 365. Such pro rata Incentive Compensation will be payable at the same
time that the full Incentive Compensation would have been payable to the
Executive pursuant to Subparagraph 3(b) hereof.

         Except as provided under this Subparagraph and Subparagraph 3(e), as of
         the effective date of the Disability, all other obligations under the
         Agreement shall cease.

         (E)  CERTAIN DEFINITIONS.

         "CONSTRUCTIVE DISCHARGE" means the termination of the Executive's
         employment by the Executive on account of (i) any reduction in the
         Executive's then-current Base Salary or target annual Incentive
         Compensation without the consent of the Executive, (ii) any reduction
         in the level or scope of the job responsibility or status of the
         Executive occurring without the consent of the Executive or (iii) any
         relocation to any Employer location which is more than 50 miles from
         its current location and to which the Executive has not agreed.

         "CHANGE OF CONTROL" shall be deemed to have occurred if (i) a tender
         offer shall be made and consummated for the ownership of 50% or more of
         the outstanding voting securities of the Employer, (ii) the Employer
         shall be merged or consolidated with another corporation and as a
         result of such merger or consolidation less than 50% of the outstanding
         voting securities of the surviving or resulting corporation shall be
         owned in the aggregate by the former shareholders of the Employer,
         other than affiliates (within the meaning of the Securities Exchange
         Act of 1934) of any party to such merger or consolidation, (iii) the
         Employer shall sell all or substantially all of its assets to another
         corporation which corporation is not wholly owned by the Employer, or
         (iv) a person, within the meaning of Section 3(a)(9) or of Section
         13(d)(3) (as in effect on the date hereof) of the Securities Exchange
         Act of 1934, or other legal entity shall acquire 50% or more of the
         outstanding voting securities of the Employer (whether directly,
         indirectly, beneficially or of record). For purposes hereof, ownership
         of voting securities shall take into account and shall include
         ownership as determined by applying the provisions of Rule
         13d-3(d)(1)(i) (as in effect on the date hereof) pursuant to the
         Securities Exchange Act of 1934; or (v) individuals who, as of the date
         hereof, constitute the Board of Directors of the Employer (the
         "Incumbent Board") cease to constitute at least a majority of the Board
         as a result of an actual or threatened election contest with respect to
         the election or removal of directors or other actual or threatened
         solicitation of proxies or consents by or on behalf of a person other
         than the Incumbent Board.

         "INVOLUNTARY TERMINATION" means the Executive's (i) involuntary
         separation from service with the Employer, other than as a result of
         his death, Disability, voluntary resignation of employment unrelated to
         a Constructive Discharge or Change of Control, retirement or
         Termination for Cause, (ii) voluntary separation from service following
         a Constructive Discharge or Change of Control, or (iii) receipt of
         notice of the Employer's intent not to extend the Period of Employment
         as specified in Paragraph 1.

         "TERMINATION FOR CAUSE" means the termination of the Executive's
         employment as a result of conduct by the Executive amounting to (i)
         fraud against the Employer, (ii) willful misconduct, repeated refusal
         to follow the reasonable directions of the Board; (iii) knowing
         violation of law in the course of performance of the duties of
         Executive's employment with the

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         Employer, (iv) repeated and frequent absences from work without a
         reasonable excuse, (v) intoxication with alcohol or drugs while on the
         Employer's premises during regular business hours, or (vi) a conviction
         or plea of guilty or nolo contendere to a felony or a crime involving
         dishonesty. With respect to (ii) above, Termination for Cause shall not
         be permitted until after the Executive has been given written notice of
         his alleged actions described in clause (ii), listing in reasonable
         specificity such alleged actions, and after the Executive shall have
         failed to improve such performance within the time period (which shall
         have been a reasonable time period) specified in such notice.

5.   INDEMNIFICATION.

     The Employer will indemnify the Executive to the fullest extent permitted
by applicable laws and regulations in accordance with the Bylaws and Amended and
Restated Articles of Incorporation of the Employer. The Employer shall insure
and provide a defense to the Executive against all costs, charges and expenses
incurred in connection with any action, suit or proceeding to which he may be
made a party by reason of his good faith execution of his duties as described in
Paragraph 2. In the event that the Executive is found to be liable or culpable,
in any action, suit or proceeding involving sexual harassment, discrimination or
fraud, the Executive will be obliged to repay to the Employer any costs, charges
or expenses incurred by the Employer in connection therewith.

6.   CONSOLIDATION, MERGER OR SALE OF ASSETS.

     Nothing in this Agreement shall preclude the Employer from consolidating or
merging into or with, or transferring all or substantially all of its assets to
another organization which assumes this Agreement and all obligations and
undertakings of the Employer hereunder. Upon such a consolidation, merger or
sale of assets, the term "the Employer" as used will mean the other
organization, and this Agreement shall continue in full force and effect.

7.   ASSIGNMENT.

     The Employer, with the prior written approval of the Executive, shall have
the right to assign this Agreement to an affiliate or subsidiary corporation,
and all covenants and agreements hereunder shall inure to the benefit of and be
enforceable by or against its successors and assigns.

     This Agreement provides for the personal services of the Executive. The
Executive shall not have the right to assign or transfer any of the rights or
benefits hereunder, nor shall they be subject to voluntary or involuntary
alienation.

8.   AMENDMENT, MODIFICATION, TERMINATION OR WAIVER.

    The parties hereby irrevocably agree that no attempted amendment,
modification, restatement, termination, discharge or change (collectively,
"Amendment") of this Agreement shall be valid and effective, unless the parties
shall unanimously agree in writing to such Amendment. No waiver of any provision
of this Agreement shall be effective unless it is in writing and signed by the
party against whom it is asserted, and any such written waiver shall only be
applicable to the specific instance to which it relates and shall not be deemed
to be a continuing or future waiver.

9.   NON-COMPETITION.

     (A) NONCOMPETITION

         The parties acknowledge and agree that, because of Executive's access
         to the Trade Secrets and Confidential Information as well as his duties
         as President and Chief Executive Officer, efforts by Executive to
         engage in directly competitive activities would cause significant,
         irreparable harm to Employer. The parties further agree that the
         relevant competitive market for the Restricted Activities (defined
         below) is nationwide, and that Employer would be directly and severely
         harmed by competitive activities anywhere in the United States of
         America. Therefore, the parties agree that, during his employment and
         the applicable Restricted Period, except on behalf of the Employer,
         Executive shall not engage in the Restricted Activities within the
         United States of America. For purposes of this Paragraph, the
         "Restricted Activities" shall consist of engaging and performing in or
         directly or indirectly supervising others in the research, development,
         marketing or commercialization of pharmaceuticals or biopharmaceuticals
         used to treat or prevent atherosclerosis, restenosis, asthma, cystic
         fibrosis, rheumatoid arthritis, or solid organ transplant rejection.
         For purposes of this Paragraph, the "Restricted Period" shall be one
         (1) year after termination of employment.

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     (B) NONSOLICITATION OF CUSTOMERS

         During his employment and for one (1) year thereafter, Executive will
         not solicit or induce any customer or actively sought prospective
         customer of Employer, with whom Executive had material contact during
         the last 24 months of his employment, for the purpose of providing
         products or services relating to pharmaceuticals or biopharmaceuticals
         used to treat or prevent atherosclerosis, restenosis, asthma, cystic
         fibrosis, rheumatoid arthritis, or solid organ transplant rejection.

     (C) NONSOLICITATION OF EMPLOYEES

         During his employment and for one (1) year thereafter, Executive will
         not hire any employee of Employer, who was employed by Employer at any
         time during the three (3) month period prior to the date of Executive's
         termination, and will not solicit, encourage, or induce any such
         employee to leave the employ of Employer.

     (D) REASONABLENESS OF COVENANTS

         Executive acknowledges and agrees that the covenants in this section
         are reasonably limited and are necessary to protect the legitimate
         business interests of Employer. Executive further acknowledges and
         agrees that he is capable of finding adequate employment and making a
         living without violating these covenants.

     (E) REMEDIES

         Executive acknowledges and agrees that, in the event of a breach of the
         above covenants, the harm to Employer would be immediate, significant,
         and irreparable. Executive agrees that Employer shall be entitled to
         obtain an injunction to prevent actual or threatened violation of these
         covenants, and shall not be required to post a bond or other security
         in order to obtain preliminary or permanent injunctive relief.

     (F) BREACH BY EMPLOYER

         Notwithstanding the foregoing, in the event that the Employer breaches
         any provision in Paragraphs 3 or 4 hereof with respect to compensation
         or perquisites owed to the Executive prior to or after termination of
         his employment, the rights and remedies of Employer under this
         Paragraph shall be null and void until such breach is cured.

10.  INTELLECTUAL PROPERTY.

     (a) For purposes of this Agreement, the following definitions apply:

         (i)   "Trade Secret" means any scientific, technical or non-technical
         data or information of Employer, without regard to form, including but
         not limited to, formulas, techniques, processes, procedures,
         improvements, know-how, patterns, compilations, programs, computer
         software, devices, methods, techniques, drawings, processes, financial
         data, financial plans, product or website plans, market feasibility
         studies, designs and design concepts, documents and manuals related to
         product plans, designs and design concepts, or lists (whether in
         written form or otherwise) of actual or potential customers or
         suppliers, which (i) derive economic value, actual or potential, from
         not being generally known to and not being readily ascertainable by
         proper means by other persons who can obtain economic value from its
         disclosure or use and (ii) are the subject of efforts that are
         reasonable under the circumstances to maintain its secrecy. Trade
         Secrets also include any information described in this Subparagraph (a)
         which Employer obtains from another party and which Employer treats as
         proprietary or designates as trade secrets, whether or not owned or
         developed by Employer.

         (ii)  "Confidential Information" means any data or information, without
         regard to form, other than Trade Secrets, that is of value to Employer
         and is not generally known to competitors of Employer, including
         without limitation, lists of any information about Employer's
         employees, sales and marketing techniques and information, price lists,
         pricing policies, Employer's business methods, training and operations
         materials, and contracts, records and contractual relations with
         Employer's customers and suppliers. Confidential Information also
         includes any information described in this Subparagraph (b) which
         Employer obtains from another party and which Employer treats as
         proprietary or designates as confidential information, whether or not
         owned or developed by Employer.

         (iii) Failure to mark any of the Trade Secrets or Confidential
         Information as confidential shall not affect its status as Trade
         Secrets or Confidential Information under this Agreement.

     (b) Executive recognizes and acknowledges that Employer is engaged in the
         business of research, development, marketing and commercialization of
         pharmaceuticals and biopharmaceuticals used to treat or prevent
         specific medical conditions, which activities involve the use of
         skilled experts and the expenditure of substantial amounts of time and
         money. As a

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         result of such investments of skill, time and money, Employer has
         developed certain Confidential Information and Trade Secrets, which
         give Employer significant advantages over its competitors. Due to the
         nature of Executive's employment with Employer, Executive understands
         that he has had, and may have in the future, frequent direct and
         indirect contact with various suppliers, sources and customers of
         Employer and may be presented with, have access to, and/or participate
         in the development of both Confidential Information and Trade Secrets.
         These Trade Secrets and Confidential Information constitute valuable,
         special and unique assets of Employer and any disclosure thereof
         contrary to the terms of this Agreement would cause substantial loss of
         competitive advantage and other serious injury to Employer.

     (c) For the reasons recited in Subparagraph 10(b) above, Executive
         covenants and agrees that:

         (i)   During Executive's employment with Employer and after the
         termination thereof, whether such termination is at Executive's
         instance or Employer's, Executive will not, except as expressly
         authorized or directed by Employer, use, copy, or disclose, or permit
         any unauthorized person access to, any Trade Secrets belonging to
         Employer or any third party; and

         (ii)  During Executive's employment with Employer and for a period of
         two (2) years after termination, whether such termination is at
         Executive's instance or Employer's, Executive will not use, copy, or
         disclose, or permit any unauthorized person access to, any Confidential
         Information belonging to Employer or any third party.

         (iii) Upon request of Employer and in any event upon the termination of
         Executive's employment with Employer, Executive will deliver to
         Employer all memoranda, notes, records, tapes, documentation, disks,
         manuals, files or other documents, and all copies thereof, concerning
         or containing Confidential Information or Trade Secrets in his
         possession, whether made or compiled by Executive or furnished to
         Executive by Employer.

         (iv)  All inventions, discoveries, developments, designs, Trade
         Secrets, trademarks, copyrightable subject matter and other proprietary
         information or work product, whether or not patentable (collectively,
         "Inventions"), which Executive has made or conceived, or may make or
         conceive, either solely or jointly with others, while providing
         services to Employer or relating to any of Employer's actual or
         anticipated business known to Executive while employed by Employer, or
         suggested by or resulting from any task assigned to Executive or work
         performed by Executive for or on behalf of Employer, shall be the
         exclusive property of Employer. Executive will promptly disclose any
         and all such Inventions to Employer and will promptly execute and
         deliver, without requiring Employer to provide any further
         consideration therefor, such confirmatory assignments, instruments or
         documents as Employer deems necessary or desirable to vest title
         thereto in Employer.

     (d) Executive acknowledges that Employer does not wish to incorporate any
         unlicensed or unauthorized materials into its products or technology.
         Therefore, Executive agrees that Executive will not knowingly disclose
         to Employer, knowingly use in Employer's business, or knowingly cause
         Employer to use, any information or material which is confidential to
         any third party unless Employer has a written agreement with such third
         party or Employer otherwise has the right to receive and use such
         information. Executive will not knowingly incorporate into Executive's
         work any material, which is subject to the copyrights or patent of any
         third party unless Employer has a written agreement with such third
         party or otherwise has the right to receive and use such material.

11.  DISPUTE RESOLUTION.

     Any controversy or claim arising out of or relating to the interpretation
or application of this Agreement, or any breach hereof, shall be settled by
arbitration in the Fulton County, Georgia area in accordance with the rules of
the American Arbitration Association then in effect, and judgment upon the award
rendered by the arbitrator(s) shall be final and binding on the parties hereto
and may be entered in any court having jurisdiction thereof. Notwithstanding
this arbitration provision, an action by the Employer for injunctive relief to
enforce the restrictive covenants in paragraphs 9 and 10 above may be brought in
any court of competent jurisdiction.

     All arbitrations pursuant to this Agreement shall be determined by a single
arbitrator if the parties shall agree upon one, or by three arbitrators, one
appointed by each party and a third arbitrator appointed by the two arbitrators
selected by the parties. All arbitrators would be selected from a panel proposed
by the American Arbitration Association. If either party shall fail to appoint
an arbitrator within thirty (30) days after it is notified to do so, then the
arbitration shall be accomplished by the single arbitrator who was appointed by
the other party. Each party agrees to comply with any award made in any such
proceeding and to the entry of a judgment in any jurisdiction upon any award
rendered in such proceeding. The decision of the arbitrators shall be tendered
within sixty (60) days of final submission of the parties in writing or any
hearing before the arbitrators and shall include their individual votes.

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     The parties hereto expressly agree to this arbitration provision:

     Initials        Initials
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12.  ENTIRE AGREEMENT.

     This Agreement sets forth all the promises, covenants, agreements,
conditions and understandings between the parties hereto, and supersedes all
prior and contemporaneous agreements, understandings, inducements or conditions
expressed or implied, oral or written, except as herein contained. This
Agreement shall not operate to reduce any benefit or compensation inuring to the
Executive of a kind elsewhere provided, including previously granted stock
options, and not expressly provided in this Agreement.

13.  CHANGE IN TAXATION.

     If subsequent to the effective date of this Agreement, there occurs a
change in the tax laws, regulations or administrative interpretations which
would materially impact the taxation of the benefits hereunder, either party to
this Agreement may propose an amendment. Any such proposed amendment shall be
subject to Paragraph 8.

14.  PROVISIONS SEVERABLE.

     This Agreement is intended to be performed in accordance with, and only to
the extent permitted by, all applicable laws, ordinances, rules, and regulations
of the jurisdiction in which the parties do business. If any provision of this
Agreement, or the application thereof to any person or circumstance shall, for
any reason or to any extent, be invalid or unenforceable, the remainder of this
Agreement and the application of such provision to other persons or
circumstances shall not be affected thereby, but rather shall be enforced to the
greatest extent permitted by law.

15.  WITHHOLDING.

     The Employer shall have the right to withhold from any and all payments
required to be made to the Executive pursuant to this Agreement all federal,
state, local, and/or other taxes, which the Employer determines, are required to
be withheld in accordance with applicable statutes or regulations.

16.  GOVERNING LAW.

     This Agreement shall be construed in accordance with the laws of the State
of Georgia and the venue of any dispute or litigation shall be Fulton County.

                             * * * * * * * * * * * *

                                       8

<PAGE>   9

IN WITNESS WHEREOF, the parties hereto have executed this Agreement effective as
of the day and year first above written.

                                      ATHEROGENICS, INC.

                                  By:  /s/ MICHAEL A. HENOS
                                       ------------------------------

                                  Title: Chairman
                                         ----------------------------

                                  Date: March 8, 2001
                                        -----------------------------

                                  EXECUTIVE:

                                  /s/ RUSSELL M. MEDFORD
                                  -----------------------------------
                                  Russell M. Medford, M.D.

                                  Date: March 6, 2001
                                        -----------------------------

                                       9
<PAGE>   10

                                   SCHEDULE 1

               Listing and description of Benefits and Perquisites

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

                                  ATHEROGENICS
                                LIST OF BENEFITS
                       (description in Employee Handbook)

STOCK OPTIONS-based on performance

MEDICAL AND DENTAL COVERAGE

SECTION 125 FLEXIBLE SPENDING PLAN

401K PLAN

LONG-TERM DISABILITY INSURANCE

LIFE INSURANCE

VACATION

HOLIDAYS

PERSONAL DAYS

SICK LEAVE

DIRECT DEPOSIT

                                       10<PAGE>   1

EXHIBIT 10.15

                    NON-NEGOTIABLE PROMISSORY NOTE - AMENDED

$191,858.73                                                      January 1, 2001

     FOR VALUE RECEIVED, the undersigned, Inhibitex, Inc., a Delaware
corporation, with its principal offices at 8995 Westside Parkway, Alpharetta,
Georgia 30004 (the "Maker"), promises to pay to the order of AtheroGenics, Inc.,
a Georgia corporation (the "Holder"), the principal sum of One Hundred
Ninety-One Thousand Eight Hundred Fifty Eight and 73/100 ($191,858.73), together
with interest on so much thereof as is from time to time outstanding and unpaid,
from the date hereof until the principal sum is paid in full, at the rate of
seven percent (7%) per annum, with principal and accrued interest being due and
payable as follows.

1.   PAYMENTS. All payments due hereunder shall be made in lawful money of the
     United States of America at 8995 Westside Parkway, Alpharetta, Georgia
     30004, or at such other place as Holder may designate in writing to the
     undersigned. Commencing on the date of this Note, interest shall accrue and
     be computed on the daily outstanding balance on a 360-day year simple
     interest basis. Principal and interest shall be due and payable monthly, in
     advance, in accordance with the amortization schedule, attached hereto as
     Attachment A and incorporated herein by this reference, commencing on
     January 1, 2001 and continuing on the first day of each month thereafter
     and including December 1, 2005, at which time all outstanding principal and
     accrued but unpaid interest will be due and payable in full.

2.   EVENT OF DEFAULT. An event of default shall be deemed to occur if Maker
     fails to make or cause to be made any payments required to be made under
     this Note when the same shall be due and payable and such default is not
     cured within three (3) days after Maker receives written notice thereof
     from Holder.

3.   REMEDIES. Upon the occurrence of an event of default, at the option of the
     Holder, the entire principal amount due hereunder, together with all
     accrued interest and any other amounts due hereunder, shall immediately
     become due and payable.

4.   PREPAYMENT. This Note may be prepaid in full or in part prior to maturity,
     without penalty or fee.

                                      -1-

<PAGE>   2

5.   WAIVER. Maker hereby waives diligence, presentment, protest and demand,
     notice of protest, dishonor, notice of dishonor and nonpayment of this
     Note, and expressly agrees that, without in any way affecting the liability
     of Maker, Holder may extend any date or the time for payment of sums due
     hereunder.

6.   CHOICE OF LAW. This Note shall be governed by, and construed and enforced
     in accordance with the laws of the State of Georgia (without regard to its
     rules of conflicts of laws).

7.   COSTS OF COLLECTION. The Maker shall reimburse the Holder for all
     reasonable costs and expenses (including reasonable attorney's fees)
     actually incurred by the Holder in enforcing or collecting, or attempting
     to enforce or collect, the obligations evidenced by this Note, whether or
     not suit is instituted.

8.   SEVERABILITY. Wherever possible, each provision of this Note shall be
     interpreted in such manner as to be effective and valid, but if any
     provision hereof shall be prohibited by law or be otherwise invalid, such
     provision shall be ineffective to the extend of such prohibition or
     invalidity, without invalidating the remainder of such provision or the
     remaining provisions of this Note.

9.   ASSIGNMENT. This Note may not be transferred or assigned by Holder to any
     third party without the prior written permission of Maker.

10.  HEADINGS. The headings and titles used in this Note are intended solely for
     identification and not for any substantive purpose, and no heading or title
     shall in any way limit or extend the provisions hereof.

11.  LIMITATION OF INTEREST. Notwithstanding any provision herein to the
     contrary, the interest rate provided by this Note shall in no case exceed
     the rate allowable under any statute or law applicable to this transaction
     when appropriate consideration is given to borrowers or lenders of like
     character or classification. In the event the rate is determined to exceed
     the rate allowable under any statute or law applicable to this transaction,
     the interest rate shall be the maximum allowed by any such statute or law,
     and any amounts actually paid in excess thereof, shall be credited to
     principal.

     This Amended Non-Negotiable Promissory Note supersedes the note between
Inhibitex, Inc. and AtheroGenics, Inc. executed April 1, 1999. Upon execution of
this Note, there will be no further amounts due on the April 1, 1999 Note.

                                      -2-

<PAGE>   3

     IN WITNESS WHEREOF, this Note has been duly sealed, executed and delivered
     the day and year first above written.

                                       "MAKER"

                                       INHIBITEX, INC.,
                                       a Delaware corporation

                                       By:        /s/ RUSS PLUMB
                                           -------------------------------------
                                           Name:  Russ Plumb
                                           Title: Vice President & CFO

                                      -3-

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