Lipo-PM by applied nutriceuticals- it won't help you fall asleep, but it will keep you asleep without any grogginess the next morning, help you burn fat at night, and make the quality of your sleep incredibly restful. I've been on tons of prescription sleeping medications, and this beats them all out.
Also try their product HGHUp- if you want something more comprehensive. It increases test levels as well, and when you take half of your dose before bed you'll have the best sleep you've ever had.
it's amazing stuff!