Hello Type O,Well, I took Celexa for about 9 months I think. I may have been ten or eleven, but it was less than a year. My side effects were diarrhea--not much fun if you are IBS-D, of course, but these went away after two or three weeks. I believe I was also a bit tired initially, but I did get used to it, and after awhile I NO LONGER HAD ANY MORE SIDE EFFECTS. I did get used to it. But everyone is different.I did not, at any time, have any really negative effects. They also say it can take 7 days to four weeks to work...For me it was seven days exactly.I hope this helps you. Try and continue it if you can, because I think that once you get past the side effects (if possible) you might really like it. Plus, I took only 20mg, and some people take 40...Check to see which one you are taking.Best Wishes,RobAlan