I don't think it's uncommon to have more rebound symptoms when you withdraw from meds. And it's KIND OF caused by the meds, but only sort of indirectly as I understand it. If you're having bipolar symptoms though, you probably have bipolar, so I'm not sure what you're getting at by asking what the meds would do to someone who doesn't have bipolar. Probably just take away some of their emotional range, make them a little "flatter" and make them really sleepy. Same thing they do to us more or less. I'm sure they could have negative side effects too.