Labopharm 40-F/A 2008 FY Annual report (Canada) (amended)

Exhibit 99.8

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Labopharm Inc. (the “Company”) on Form 40-F/A for the fiscal year ended December 31, 2008 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Mark D’Souza, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) 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.

Dated: April 15, 2009

By:	/s/    Mark D’Souza
Name:	Mark D’Souza
Title:	Chief Financial Officer