insomnia
"I've been on Ambien for 2 years now and I wouldn't have it any other way.  I've been an insomniac all my life and Ambien is a miracle cure.  My husband and kids absolutely hate it because they say I'm a totally different person when I'm on it. I never have recollection of anything and I don't think it's fair that they blame me for something I don't even know I'm doing.  All I know is the sleep is excellent and if you're considering this medicine it's good to have someone nearby who's a light sleeper."