EXHIBIT 31.2


          CERTIFICATION OF VICE PRESIDENT, FINANCE AND CHIEF FINANCIAL
                OFFICER PURSUANT TO RULE 13A-14 OR 15D-14 OF THE
                      EXCHANGE ACT, AS ADOPTED PURSUANT TO
                  SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002


I, Mariano Rodriguez, certify that:

         1.       I have reviewed this annual report on Form 40-F of Neurochem
                  Inc.;

         2.       Based on my knowledge, this annual 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
                  annual report;

         3.       Based on my knowledge, the financial statements, and other
                  financial information included in this annual 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 annual 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 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)       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

                  c)       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 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.

Dated: March 31, 2005



/s/ Mariano Rodriguez
- ----------------------------------------------------
Mariano Rodriguez
Vice President, Finance and Chief Financial Officer