The efficacy of Effexor XR was based on two 8-week, placebo-controlled, fixed-dose studies (75 to 225 mg per day) in adult outpatients meeting DSM-IV criteria for GAD. Study 1 showed that ...

Effexor XR (venlafaxine ... Your healthcare provider may recommend a gradual increase in dose, with a maximum dose of 225 mg per day. Dosing for generalized anxiety disorder follows the same ...