Overview Study Evaluating Effexor XR for Major Depression. Status: Completed Trial end date: 1969-12-31 Target enrollment: Participant gender: Summary Study Evaluating Effexor XR for Major Depression. Phase: Phase 3 Details Lead Sponsor: Wyeth is now a wholly owned subsidiary of PfizerTreatments: LevomilnacipranMilnacipranVenlafaxine Hydrochloride