Trazodone
"I have had sleep issues because of major anxiety and depression for over 10  years. It affected both falling asleep and staying asleep through the night. I tried other medications and then was put on Trazodone by my psych doctor. I take 150 mgs about a half hour to an hour before I go to bed and do not have to eat anything with it. (Someone had posted that they were concerned about that issue. I believe that is suggested for people who are on it daily for depression, not insomnia).  Trazodone puts me to sleep minutes after I get into bed, and I sleep soundly until the alarm goes off."