What could be the reason that i am gain weight with wellbutrin (bupropion) at an alarming rate. i have gained over 35 pounds 90 days?

Unusual....: Usually wellbutrin (bupropion) does not cause much weight gain, if at all, and instead it often makes it easier to eat less than usual. Are you taking another med or using some drug that might increase your appetite at the same time? Or has your routine changed so that you're getting less exercise? See your md, get checked for any problem that might cause retention of fluid. That puzzles me!