Mirtazapine
"Consider mirtzapine if you have intractable insomnia. I'm a recovering alcoholic and my sleep patterns got thoroughly screwed up during my drinking years. Mirtzapine 30 milligrams provides the most natural sleep I have ever had in my life. I sleep for eight hours and wake refreshed the way I did when I was teenager. It's so much better than benzos. Doctors may be reluctant to prescribe because of the chance of weight gain. I did gain weight because it gave me the munchies. But it levelled off at about a 7-pound gain. But it did level off!!! And you may feel completely zonked for the first two or three days. It's a good idea to start on the weekend. But again, the extreme drowsiness did disappear after a few days for me."