insomnia
"I have been taking Ambien for about 6 months, and it does the job very well. I generally take half of my 5mg pill a few nights/week. I have to take it and go directly to bed, or I have zero memory of what happens between taking it and falling asleep. The reason that I rate it so low is that I've started to notice that I have hours of the next day (after taking it the night before) that I have absolutely no memory of. I've sideswiped the guardrails in my car on the way to work and had no idea that I had done so until my husband asked what happened to the car. I had a very faint 'did I dream that or did it really happen' recollection of it. I take it fairly early in the evening. "