"been on effexor xr for approximately 12 years! i regret taking it. am on 225mg per day, doctor wants me to taper down to 150 per day! it&#039;s a damn nightmare i&#039;m on day 2 of being on 150 mg and the withdrawal symptoms are horrible. i feel dizzy nauseous feels like my head is hot feel very tense, very moody, and  short fuse. i could go on."