http://www.alteril.com/WhatIsAlteril.htm
My son likes this stuff, can take about 40 mins to an hour to kick in but it seems to work well for him, he usually sleeps around 10 hours. I take Ambien and 200 mg 5-HTP, works great for me, at least 6 hours and then I can usually drift off again for a couple more hours. You just have to try different things to see what works for you.