I have been taking citalopram. I took it for about a couple of weeks and then I went off it cold turkey for about 2 weeks. Then on Monday I got more. I took it and now I feel tired or have a lack of energy. I've already had a sleep today. I might have a nap. I do stay up late but I did sleep. Citalopram is helpful but will this tiredness go away? Or may I have to sleep earlier? My sleeping pattern is messed up