Zoloft for me (Sertraline) years ago. Was on for a few years and came off cold-turkey when it didn't seem to help any more.

My life outside my head was crazy enough. My mind then matched it. I don't regret taking it, but it is a real trap of taking sanity from your own future and paying it back later. Advice I received was if my body could handle it, I should stay on it forever. I didn't like that idea, though. Among the negative side effects, the chemical sexual drive suppression caused its own problems. YMMV of course.