EX-24

                                                                      Exhibit 24

                                POWER OF ATTORNEY

      Know all by these presents, each of the undersigned hereby constitutes and
appoints Darren Levine, signing singly, the undersigned's true and lawful
attorney-in-fact to:

(1) execute for and on behalf of the undersigned (i) Forms 3, 4 and 5 (and all
amendments thereto) in accordance with Section 16(a) of the Securities Exchange
Act of 1934 (the "Exchange Act") and the rules thereunder and (ii) reports on
Schedule 13G (and all amendments thereto) in accordance with Section 13 of the
Exchange Act and the rules thereunder, in each case with respect to the
beneficial ownership of securities by the undersigned;

(2) do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Form 4 or 5 of
Schedule 13G, complete and execute any amendment or amendments thereto, and file
such form with the United States Securities and Exchange Commission and any
stock exchange or similar authority; and

(3) take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be of benefit to,
in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney-in-fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such form and shall
contain such terms and conditions as such attorney-in-fact may approve in such
attorney-in-fact's discretion.

      The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this power of attorney and the rights and powers herein
granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, are not assuming any
of the undersigned's responsibilities to comply with Section 13 or Section 16 of
the Exchange Act.

      This Power of Attorney shall remain in full force and effect until revoked
by the undersigned in a signed writing delivered to the foregoing
attorneys-in-fact.



IN WITNESS WHEREOF, each the undersigned has caused this Power of Attorney to be
executed as of this 24th day of January, 2007.


DEERFIELD CAPITAL, L.P.

By:  J.E. Flynn Capital LLC,
     General Partner

By:  /s/ James E. Flynn
     ----------------------------------------
     James E. Flynn, Managing Member


DEERFIELD PARTNERS, L.P.

By:  Deerfield Capital, L.P.

By:  J.E. Flynn Capital LLC,
     General Partner

By:  /s/ James E. Flynn
     ----------------------------------------
     James E. Flynn, Managing Member


DEERFIELD SPECIAL SITUATIONS FUND, L.P.

By:  Deerfield Capital, L.P.

By:  J.E. Flynn Capital LLC,
     General Partner

By:  /s/ James E. Flynn
     ----------------------------------------
     James E. Flynn, Managing Member


DEERFIELD MANAGEMENT COMPANY

By:  Flynn Management LLC
     General Partner

By:  /s/ James E. Flynn
     ----------------------------------------
     James E. Flynn, Managing Member


DEERFIELD INTERNATIONAL LIMITED

By:  Deerfield Management Company

By:  Flynn Management LLC,
     General Partner

By:  /s/ James E. Flynn
     ----------------------------------------
     James E. Flynn, Managing Member


DEERFIELD SPECIAL SITUATIONS FUND INTERNATIONAL LIMITED

By:  Deerfield Management Company

By:  Flynn Management LLC,
     General Partner

By:  /s/ James E. Flynn
     ----------------------------------------
     James E. Flynn, Managing Member


JAMES E. FLYNN

/s/ James E. Flynn
- ----------------------------------------

EX-99

                             Joint Filer Information

Names:                          Deerfield Capital L.P., Deerfield Special
                                Situations Fund, L.P., Deerfield Management
                                Company, L.P., Deerfield Special Situations Fund
                                International Limited

Address:                        Deerfield Capital, L.P., Deerfield Special
                                Situations Fund, L.P., Deerfield Management
                                Company, L.P:
                                780 Third Avenue, 37th Floor
                                New York, NY 10017

                                Deerfield Special Situations Fund International
                                Limited:
                                c/o Bisys Management
                                Bison Court, Columbus Centre, P.O. Box 3460
                                Road Town, Tortola
                                British Virgin Islands

Designated Filer:               James E. Flynn

Issuer and Ticker Symbol:       NITROMED, INC. (NTMD)

Date of Earliest Transaction Reported: May 7, 2008

The undersigned, Deerfield Capital, L.P., Deerfield Special Situations Fund,
L.P., Deerfield Management Company, L.P., and Deerfield Special Situations Fund
International Limited are jointly filing the attached Statement of Changes In
Beneficial Ownership on Form 4 with James E. Flynn with respect to the
beneficial ownership of securities of Nitromed, Inc.

Signatures:


DEERFIELD CAPITAL, L.P.

By: J.E. Flynn Capital LLC, General Partner

By: /s/ Darren Levine
    -----------------------------------------
    Darren Levine, Authorized Signatory


DEERFIELD SPECIAL SITUATIONS FUND, L.P.

By: Deerfield Capital, L.P.

By: J.E. Flynn Capital LLC, General Partner

By: /s/ Darren Levine
    ----------------------------------------
    Darren Levine, Authorized Signatory


DEERFIELD MANAGEMENT COMPANY, L.P.

By: Flynn Management LLC, General Partner

By: /s/ Darren Levine
    ----------------------------------------
    Darren Levine, Authorized Signatory


DEERFIELD SPECIAL SITUATIONS FUND INTERNATIONAL LIMITED

By: Deerfield Management Company

By: Flynn Management LLC, General Partner

By: /s/ Darren Levine
    ----------------------------------------
    Darren Levine, Authorized Signatory