Wyeth Pharmaceuticals, a division of Wyeth announced that it has been served with a subpoena from the US Office of Personnel Management; Office of the Inspector General, requesting documents related to Effexor (venlafaxine HCl), a prescription medication approved for the treatment of major depressive disorder.

Wyeth was asked to produce documents related principally to educating or consulting with physicians, as well as marketing or promotion of Effexor to physicians or pharmacists from January 1, 1997, to September 30, 2003. Other manufacturers of psychopharmacologic products have also received subpoenas. Wyeth intends to cooperate in responding to the subpoena.