Quetiapine
"I read all posts regarding Seroquel which, for the large majority, seems to provide good measure for treatment of insomnia. I will admit that after reading the posts, I am envious. Seroquel was prescribed for me because for the last 4 months 

I have only been able to sleep 2 hours/night. The 2 hours are divided in 2 separate incriminates. I take 400 mg. (highest dose allowed) before bedtime. Most unfortunately, Seroquel has provided me NO benefit. Will talk to my physician to see if there is something else that will help not only to induce sleep, but to be able to wake up hours after sleeping, rather than 1 hour twice nightly."