Unfortunately, I was among those who couldn' take prozac due to a medical condition. I was going through a tough time and well, the doc said, that the SSRIs were not for me. So I had to look towars the alternatives. Tried many of them, but eventually found St. John Wart to be the best. Took me out of the depression. But to be quite frank, it works for some and not for other.. Some find HTP-5 to be the best alternative where as others find relief in Omega 3 acids. There is a list of natural prozac alternatives that can be tried.
I would suggest that you consult a doctor before you start experimenting.