insomnia
"I've been using Ambien for a of couple months now, only taking it a few times a week when I think I'm going to need a good nights sleep. My sleep issue was that I'd wake up at around 1:30am and not be able to fall back asleep. When I take an Ambien I fall asleep about 45 minutes after taking it, and don't wake up until my alarm comes on. I only use it when I know I'll have trouble sleeping (like Monday Mornings and I've never experienced any weird behaviors like others I've read about."