I've taken 400 mgs. Trazadone for years for sleep. Just lately I've been taking 300mgs. and sometimes 200mgs. It knocks me out for a good 8 hrs. with no hangover. Sleeping pills like Lunesta and Ambien didn't work for me. I'd sleep for 3 or 4 hours and I was up. P-doc tells me the most important factor in maintaining stabilization of BP is sleep. So it works for me and I'll keep taking it.