EXHIBIT 5 CHARTERED ACCOUNTANTS [RAYMOND CHABOT GRANT THORNTON LOGO] GENERAL PARTNERSHIP Member Firm of Grant Thornton International CONSENT OF INDEPENDENT PUBLIC ACCOUNTANT As independent public accountants to Axcan Pharma Inc., we hereby consent to the incorporation by reference in Registration Statement (Form S-8 No. 333-97879) pertaining to the Axcan Pharma Stock Option Plan as Amended and Restated on January 9, 2002 and in the related Prospectus and in Registration Statement (Form S-8 No. 333-75200) pertaining to the Axcan Pharma Inc. Stock Option Plan as Amended and Restated on December 19, 2000 and in the related prospectus of our report dated November 12, 2002 with respect to the consolidated financial statements of Axcan Pharma Inc. and subsidiaries included in the Form 40-F for the year ended September 30, 2002. /s/ Raymond Chabot Grant Thornton - ------------------------------------- RAYMOND CHABOT GRANT THORNTON Chartered accountants General Partnership Montreal, Quebec January 27, 2003 Suite 1900 National Bank Tower 600 de La Gauchetiere Street West Montreal, Quebec H3B 4L8 Telephone: (514) 878-2691