I take trazadone too. It's a life saver. I only take it occasionally. It seems to correct my sleep schedule for at least several weeks after taking it for a few nights.

Also, it's an extremely cheap medication. My doc told me that so few doctors prescribe it because of that. The drug reps push the newer meds to make more money. And the drug companies fund studies showing side effects of trazadone. It's a shame because he said he notices a lot more hangover and mental degradation in people on ambien and the like.