Well, it's possible, for sure. Prozac was the first anti-depressant that made me manic...severely. I had paranoia, delusions, hallucinations, the works. Once they took me off prozac, I went back to normal. Not trying to scare you, it's just my experience with this particular medication.

I'd talk with your pdoc about any significant mood changes...you don't want to risk letting that hypomania switching to full-blown mania!