Venlafaxine
"I am a 21 year old female. I was on Prozac for ten years (40 mg at the end) before switching to Effexor (37.5 mg at first, 262.5 mg now) because I was having issues with anxiety. I was ok for a while then I became extremely depressed and suicidal. My doctor increased my dose and although it did take away the misery and suicidal thoughts, I wouldn't describe myself as happy. I feel constantly tired, sleeping up to 16 hours a day. I can't work and social situations exhaust me. It took me a while to realize Effexor might be responsible for some of these symptoms. I am talking to a psychiatrist about changing my medication but I'm very worried about the infamous withdrawl from Effexor."