schizophrenia
"I am not sure how many months I have been on this medication, but while I have been on it I have managed to gain almost 10 pounds. I do not feel like I over-eat either. The weight just seems to pile on.  I feel incredibly sleepy during the day.  So much so that on most days I take a long nap.  I have very little energy. My stomach seems to bloat out more. Otherwise I seem to be doing just fine, both mentally and physically.  So if you don't mind being fat, lazy, and lifeless; but not crazy; this might just be the drug for you!"