"i&#039;ve been taking risperidone for ten years now and have never had any side effects apart from a bit of drowsiness when the dose is too high. i take lithium as well and keep that the same at 1000 mg, and use the risperidone in varying doses from 1.5 to 4 mg - in telephone consultation with my doctor - to control slight highs. i have not been hospitalised at all while on the drug and have led an active life."