Wex Pharmaceuticals Inc. Requests Patent Re-Examination

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - Nov. 23, 2005) - WEX Pharmaceuticals Inc. (the “Company”) (TSX:WXI) today announced that it is requesting that its US Patent No. 6,407,088 “Method of Analgesia” be re-examined in light of prior art discovered during an extensive search conducted by the Company. The re-examination is intended to introduce such changes to the scope of the patent as may be necessary to ensure that it is valid and enforceable. The re-examination reflects the Company’s continuing determination to strengthen its patent portfolio.