The drug is manufactured by Wyerth-Ayerst Laboratories, a division of American Home Products Corporation and was licensed in it's various forms between December 1993 and October 1997.
The following links are to sites containing detailed information about Venlafaxine:
EffexorXR.Com - Wyerth's glossy internet advert
Mosby's RX List - comprehensive information about Venlafaxine.
Psychiatry Online - Focus on Venlafaxine