insomnia
"Tried the generic version after a few rotations of Ambien.  The only thing I disliked about Ambien was the weird loopiness I'd get.  Read over some journal entries I wrote on Ambien and it definitely freaked me out.  I didn't notice a weird metallic taste when I took Lunesta.  The sleepiness also didn't hit me as hard as with Ambien, but it definitely peaked after about an hour and I knew it was time for bed.  Woke up fine, no headache and no weird journaling. So all in all a good experience and will likely ask for this instead of Ambien in the future."