After years and years of being diagnosed with depression and trying every antidepressant known, my psychiatrist is leaning more toward Bipolar or Cyclothymic Disorder. I just started Lamictal and like it so far. I saw my ups in that my antidepressant was working, but during my last down cycle, my psychiatrist doubled my Prozac dose and sent me straight into my first full blown manic phase. OMG-it was the weirdest thing ever!! I actually kinda enjoyed it at first, because I felt so good, but eventually the good turned into irritability and anger. The Lamictal is calming things down.
Hope it works for you, too!!