anxiety
"I have had an issue for many years where I could not shut my brain off when I went to sleep.  My doctors had tried Xanax, Valium, sleeping pills (over counter and prescription) and though some worked initially they did not completely work for me.  I was talking to a Psychiatrist friend of mine and they suggested that I try Trazodone. After researching it and seeing that it was an anti-depressant I was extremely skeptical and concerned about side effects. I started with 50mg at night and the first night I took it was the best nights sleep I had in a long time.  I am now on 100mg at night and always have great nights sleep. The only side effect I have is vivid dreams."