I've been on it for a couple of years. I actually lost weight on it before having to go back on Zyprexa. Now I don't know if it really does anything because the Zyprexa works so well, but I stay on it because apparently I need 2 antipsychotics to remain stable. I missed a couple of doses of Geodon recently because I ran out, and I was a hot mess.....guess I'd better call my refills in sooner next time.