insomnia
"This drug will knock you out for sure, but it has some really crazy side effects that I didn't think would actually happen to me, mainly doing stuff that I don't remember at all -- one night I made an extremely hefty online purchase and had no recollection of it. I also "drunk text" on Ambien, or otherwise say things verbally to people that I don't remember. This has happened a number of times and actually caused a lot of problems in my last relationship. I've woken up literally covered in food. It also worsened my depression. Not a great experience."