Hello, My GP recently changed me from Citalopram to Sertraline because she thinks it deals with anxiety better than the original ones. I've been on them a week but not feeling so great now. I actually feel much more anxious, really tired and a bit bleugh (iykwim). I asked the GP and pharmacist if I'd get any problems and they said that they were, basically, made of the same things just in a different way. Has anyone else experienced this? If I don't start picking up in a day or two I'm going back to the doc because I feel like I've regressed a month in terms of where I was in my recovery.