I don't know if anyone has heard of or tried Alteril, but it's a good combo L-Triptophan, melatonin, and valerian root, it worked very well for me and still does when I have trouble sleeping. Thought I'd share in case anyone was looking for sleep helpers. :) A good friend of mine bought me a box and I was SO thankful he did! If anyone tries it do let me know how it goes, I stand by the stuff. Works great IMO. Most drug stores carry it, Wal Mart, Target, Rite Aid, CVS. Hope this helps someone who needs sleep, I know how awful it can be. Possibly the hardest part for me personally!