anxiety
"I was put on 150 mg daily of Effexor after having a mental breakdown brought on by stress and severe insomnia. I did not find the medication helped at all other then to cause weight gain. Worst of all, I experienced horrific withdrawal symptoms coming off it. I started to wean off it in May, reducing the dose to 75mg/day. I halved it to 37.5mg a month ago and my Dr said I would be good to stop it after two weeks. Within 24 hours of taking my last pill I experienced dizziness, nausea, insomnia, and brain zaps. I could barely function. Turns out the 'half-life' of Effexor is one of the shortest out there. I had to take a short 2 week course of 10 mg Prozac (much longer short life) to come off Effexor. Horrible!!"