EXHIBIT 99.2

                    CERTIFICATION BY CHIEF FINANCIAL OFFICER

In connection with the periodic report of Connetics Corporation (the "Company")
on Form 10-Q for the period ended September 30, 2002 as filed with the
Securities and Exchange Commission (the "Report"), I, John L. Higgins, Chief
Financial Officer, Executive Vice President, Finance and Corporate Development
of the Company, hereby certify as of the date hereof, solely for purposes of
Title 18, Chapter 63, Section 1350 of the United States Code, that to the best
of my knowledge:

     (1)  the Report fully complies with the requirements of Section 13(a) or
          15(d), as applicable, of the Securities Exchange Act of 1934, and

     (2)  the information contained in the Report fairly presents, in all
          material respects, the financial condition and results of operations
          of the Company at the dates and for the periods indicated.

Date: November 13, 2002

/s/ John L. Higgins
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John L. Higgins
Executive Vice President, Finance and Corporate Development
Chief Financial Officer