I think a lot of people are against it because it's a benzo, but the ONLY thing that has worked for me is klonopin (1 mg). It send me right to sleep. The only thing is that I need tons of sleep on it, but then I'm used to it because I used to take Seroquel (25mg) to sleep and it made me need an enormous amount of sleep to function. The Seroquel stopped working, I tried 3 other meds, and then my pdoc reluctantly prescribed klonopin (I already take 1mg in the morning, I suffer from a great deal of anxiety) and it's done the trick.

The only side effect I've had, aside from needing so much sleep, is being somewhat off balance and running into things a bit.

Good luck!