Anxiety
"I was put on 50mg trazodone almost 4 weeks ago, for anxiety with the resultant insomnia.  Within a few days, I felt much calmer and not worrying and getting worked up about simple things. It was day 10 before it really kicked in to help me sleep, I will sleep for maybe 2-3 nights in a row, then have a wakeful night, although I still feel rested after a few hrs sleep. All things considered, they are helping me a lot."