Suicidal thoughts and paranoia. I didn't really understand that it was the medication talking as these side effects are infrequent, but all of it stopped when I stopped taking it. I thought the condition I was being treated for was causing me to feel that way, so I didn't take myself off and I didn't mention it to my doctor. But since the medicine wasn't really helping, the doctor took me off, tried something else, and then referred me to a specialist who figured out what was going on and fixed me up.