Wellbutrin caused lack of appetite and i lost weight in the very beginning but stopped after about a year. Seroquel caused hair loss for me. I no longer take seroquel but due to weight gain and sleeping all the time. I could clog my shower drain in a week when i took seroquel. I dont have that much hair. Its fine and brittle thin from lithium. I am extremely sensitive to meds though. My experience is not the norm!