"i was prescribed risperidone for bipolar. it had the bonus side effect that it cured my lifelong non-stop painful bleeding fingernail biting. it also reduced my anxiety otherwise in the day and at night; i don&#039;t get overly excited about little things (good or bad), and i sleep 10 hours without waking every hour as before. i wish i could sleep less though. i am slow, naturally, to get things done, so losing 2-4 hours of awake time makes me noticeably less productive."