I'm 19 and just came off Effexor about a week ago. I had been on it for a year. I started off taking 37.5 mg a day, then up to 75 mg, and then back down to 37.5 for a while. Then in the final 2-3 weeks of taking Effexor, it was only 37.5 mg every other day. I have been having extreme mood swings...