Fluoxetine
"It has changed my life. I have been taking 20 to 40 mg for about 2 years. I was feeling so good for so long, that I thought I'd be fine without it and stopped taking it..... Within 2 months, I had fallen back into a horrible depression. I then started taking the medication again, feeling much better, no crying, within a week. And feeling great again within a month or 2. I have felt some of the side effects, insomnia being the worst, but not bad compared to how much better I feel."