There is an over the counter cheap medication called "Melatonin." I get a bottle from Walmart, it's about $6.00 for a 3 month supply. It's effect is like eating turkey. It has pretty much the same ingrediants, it is not an addictive drug. I have been taking it nightly for about a year.

You take one pill (I take a half) 20 minutes before you go to sleep.