I have been taking Effexor for nearly 3 years now. I take 75mg 3 times daily. Recently i switched my prescriptions to mail order, and my doctor erroneously worte my script for Effexor XR 75mg 3 times a day. I was unknowingly taking this dosage for nearly a month before it was clear what had happened. It suddenly made sense why I was having th e side affects i was having. My question is, what is a comparible dose of Effexor as compared to Effexor XR??