I used to take seroquel xr 600. Life was smooth, work was going fine. But doctor told me to reduce medicine, I reduced but i was fine till 200 mg, Later doctor started to say seroquel is not good take another and the new one made me hard to work i left work, hard to do anything. But everything was smooth before. If doctor has told me this is a life time medicine you have to take it 400 mg forever i wont be missing anything. But everywhere doctor says to change the mediicne. Patients hopes that he is getting well and happy when reducing medicine but later realises that changing medcine only makes suffer. Can anybody tell me why doctor changes medicine?