Two grams of glycine and 100 milligrams of GABA taken every third or fourth night can enhance sleep onset and depth.

“So every third or fourth night, I will take two grams of glycine and a hundred milligrams of GABA in addition to the standard sleep stack that I talked about before.”

“But the reason I only add glycine and GABA every third or fourth night is that if I take it too often, I find that the entire sleep stack doesn't work quite as effectively.”