Hi, I just joined this site yesterday. I'm 18 and I've suffered from depression and anxiety for years. I've been on a handful of meds like Paxil, Prozac, and Zoloft. I'm now taking 75 mg of Effexor a day. I just wondered if anyone here who has taken it noticed that it seemed to cause like highs and lows that they didn't have before. I mean, it just seems that throughout the day now I have these low lows and then I'll get this giddy, high feeling. I know that sounds manic, but it only started happening when I started taking the effexor. Just wondered if this has happened to anyone else.