"i started taking prozac for sad, seasonal affective disorder, and it worked really well for that. well a few years ago my hubby left and i tried to increase to 40 mg but the higher dose did not work well with me, so went back to the 20mg until about 3 months . thought i was ready to wean off, first time i did not wean right and felt awful. next time i weaned very slowly, which was much better, unfortunately i began to have signs  of depression again. called my md to get a different one even though, prozac had worked well before. he recommended zoloft but after reading the awful side effects from reviewers, i change my mind and have restarted prozac. the only side effect i get with prozac is decreased sex drive, 20 mg works for me!"