i, too, have been diagnosed as bi polar and have trouble sleeping. i try not taking sleeping pills bacause, as you say, you become tollerant. ambian didn't work for me at all. i am also in chronic debilitating pain, so one night i took a few lortab and darvocet. my doc was not amused. but i slept and didn't have any pain. now, however, i use temazepam 30 mg if i just can't sleep and start panicing about
it. better than the narcodic drugs
hopethis helps. my gp rxed the temazepam. maybe yours can do it for you.