insomnia
"I've been on Ambien for years; no problems.  I'm 6 months out from having gastric bypass surgery.  Two months ago, I started waking up in the night - restless, agitated, heart pounding, feeling like I couldn't get a deep breath of air so I could relax, racing thoughts..., horrible!  Then started doing strange things in sleep (eating, no recollections of having done certain things).  Quit taking Ambien per doc's recommendation but now I can only sleep 2-3 hours a night.  Have tried herbal supplements with no luck.  Think I'm going to try Ambien again. Maybe 5mg at bedtime, and another 5mg when I wake up accompanied with a Xanax.  Hope it works!"