Arrrh! I went to go buy power to sleep pm by irwin naturals but the store around me did not have it so I got Night Rest with 500mg of GABA as an alternative today. Will post how it works.
Well it’s day 2 of using Night Rest and I’m taking it back. It gives me a headache to the point where it wakes me up a night and my sleep was not restful at all.
Z-12 by Biotest seems to be the best sleep supplement I have found. Much better than ZMA which keeps me awake. Z-12 contains GABA, 5-HTP, and Theanine (as lyle mentioned). I would love to try each of those ingredients on their own to figure out if it is one of them having the effect on my sleep or if you need all of them to work synergistically to have an effect. Perhaps I will order a small amount of each of them in powder form from purebulk.com and report back.