I've been trying 5-HTP per my FNP's suggestion, and I really not sure if it's helping that much. 5-HTP is a precursor of melatonin and serotonin. I'm taking it along with my Ambien. I actually wanted to try it more for my depression and it's helping a little with that. Interesting research here, seems it also helps with weight loss and migraines, check it out!
http://www.charlesgantmd.com/article...-precursor.pdf
Ambien works great for me for sleep. There's tricks to it tho, see my post up a ways from the TBI forum, in Sleep Apnea & Sleep Disorders forum. Mostly it's just that it needs some room in the gut to absorb quickly enough to work; so eat early.