Exhibit 99.1

                                  CERTIFICATION

         Pursuant to Section 906 of the Public Company Accounting Reform and
Investor Protection Act of 2002 (18 U.S.C. Section 1350, as adopted), Henry J.
Fuchs M.D., the Chief Executive Officer of IntraBiotics Pharmaceuticals, Inc.
(the "Company"), and Eric H. Bjerkholt, the Chief Financial Officer of the
Company, each hereby certifies that, to the best of his knowledge:

      1. The Company's amended Annual Report on Form 10-K/A for the year ended
      December 31, 2002, to which this Certification is attached as Exhibit 99.1
      (the "Annual Report"), fully complies with the requirements of Section
      13(a) or Section 15(d) of the Securities Exchange Act of 1934, as amended;
      and

      2. The information contained in the Annual Report fairly presents, in
      all material respects, the financial condition of the Company at the end
      of the period covered by the Annual Report and results of operations of
      the Company for the period covered by the Annual Report.

Dated: June 24, 2003

/s/ Henry J. Fuchs                                       /s/ Eric H. Bjerkholt
- -----------------------                                  -----------------------
Henry J. Fuchs M.D.                                      Eric H. Bjerkholt
Chief Executive Officer                                  Chief Financial Officer


Note: This certification "accompanies" the Form 10-K/A to which it relates, it
is not deemed filed with the SEC and is not to be incorporated by reference
into any filing of the company under the Securities Act of 1933, as amended, or
the Securities Exchange Act of 1934, as amended (whether made before or after
the date of the Form 10-K/A), irrespective of any general incorporation
language contained in such filing.