"i was prescribed lunesta a few years ago and took it for about 2 months, hated it and got off of it. last night i was desperate to sleep, and i couldn&#039;t remember why i hated it, so i took another one. first of all, this was 17 hrs ago and my mouth still tastes like i sucked the coating off a bunch of ibuprofen. it makes it really hard to drink water because it exaggerates the taste.  secondly, it makes me feel hungover and oppressively tired all day. third, it let&#039;s me sleep only 6 or 7 hours despite feeling like i could sleep all day when i wake up. is it the worst? no. it does work to that extent but the side effects are, if not medically serious, pretty annoying and uncomfortable."