I have a long history with psychiatric drugs. Most of them didn't do a thing, but whenI took Zyprexa I gained about 20 lb. It turns out the atypical antipsychotics not only cause wt. gain, they also cause diabetes. I also took Dexedrine at low doses before I got CFS. It didn't do a thing and I didn't have any problem stopping. My son falls asleep when he takes stimulants. Go figure.