pristiq for effexor

Update: Wyeth drops out of European sales of Prstiq after studies show its inefectiveness Cleared for marketing as an antidepressant in the U.S., Pristiq is based on the active ingredient in Wyeth’s now-off-patent blockbuster Effexor. Some doctors and researchers question whether the drug is much different from–or better than–other antidepressants already on the market. Pristiq …