Watson Pharmaceuticals, Inc. (NYSE: WPI), a leading specialty pharmaceutical company, announced that it received a Complete Response Letter from the U.S. Food and Drug Administration (FDA) on its New Drug Application (NDA) for TRELSTAR(R) 22.5 mg (triptorelin pamoate for injectable suspension), a 24-week formulation of TRELSTAR(R) for the palliative treatment of advanced prostate cancer. The TRELSTAR(R) NDA was prepared in cooperation with Debiopharm Group, a Swiss-based global biopharmaceutical group of companies.