depression
"This helped me a lot when I started taking it about six months ago. I had to switch over from Celexa because of the recent problems Celexa has caused.

Just recently, however, Zoloft has completely stopped working for me. I feel like I haven't felt in years: a deep sense of sadness that has nothing to do with my current circumstances. All brains are slightly different, though, so I don't mean to imply that this won't work for others."