**Exhibit
      99.6**




CERTIFICATION
        PURSUANT TO 17 CFR 240.13A-14
 PROMULGATED
        UNDER SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
  I,
        Steve
        Gannon, Senior Vice President and Chief Financial Officer of Axcan Pharma
        Inc.
        certify that:
   1.
                I
                    have reviewed this annual report on Form 40-F of Axcan Pharma
                    Inc.;
 2.
              Based
                  on my knowledge, this report does not contain any untrue statement
                  of a
                  material fact or omit to state a material fact necessary to make
                  the
                  statements made, in light of the circumstances under which such
                  statements
                  were made, not misleading with respect to the period covered by
                  this
                  report;
  3.
              Based
                  on my knowledge, the financial statements, and other financial
                  information
                  included in this report, fairly present in all material respects
                  the
                  financial condition, results of operations and cash flows of the
                  issuer as
                  of, and for, the periods presented in this
                  report;
  4.
              The
                  issuer’s other certifying officer and I are responsible for establishing
                  and maintaining disclosure controls and procedures (as defined
                  in Exchange
                  Act Rules 13a-15(e) and 15d-15(e)) for the issuer and we
                  have:
  (a) Designed
          such disclosure controls and procedures, or caused such disclosure controls
          and
          procedures to be designed under our supervision, to ensure that material
          information relating to the issuer, including its consolidated subsidiaries,
          is
          made known to us by others within those entities, particularly during the
          period
          in which this report is being prepared;
 (b)    
            Designed such internal control over financial reporting, or caused such
            internal
            control over financial reporting to be designed under our supervision,
            to
            provide reasonable assurance regarding the reliability of financial reporting
            and the preparation of financial statements for external purposes in
            accordance
            with generally accepted accounting principles;
  (c) Evaluated
          the effectiveness of the issuer’s disclosure controls and procedures and
          presented in this report our conclusions about the effectiveness of the
          disclosure controls and procedures, as of the end of the period covered
          by this
          report based on such evaluation; and
  (d)  Disclosed
          in this report any change in the issuer’s internal control over financial
          reporting that occurred during the period covered by the annual report
          that has
          materially affected, or is reasonably likely to materially affect, the
          issuer’s
          internal control over financial reporting; and
 5.
              The
                  issuer’s other certifying officer and I have disclosed, based on our most
                  recent evaluation of internal control over financial reporting,
                  to the
                  issuer’s auditors and the audit committee of the issuer’s board of
                  directors (or persons performing the equivalent
                  functions):
  (a)  All
        significant deficiencies and material weaknesses in the design or operation
        of
        internal control over financial reporting which are reasonably likely to
        adversely affect the issuer’s ability to record, process, summarize and report
        financial information; and
  (b)  Any
        fraud, whether or not material, that involves management or other employees
        who
        have a significant role in the issuer’s internal control over financial
        reporting.
   Date:  December
        29, 2006
 /s/Steve
        Gannon
 Steve
        Gannon
 Senior
        Vice President and Chief Financial Officer