Hypoallergenic. Glycine is a non-essential amino acid that has one of the simplest structures of all the amino acids. Glycine is found in proteins of all life forms and is important in the synthesis of proteins as well as adenosine triphosphate (ATP).
"I purchased this product based on what it is known to be effective for and though it is early (I haven't been using it for a long time yet), I believe it is beginning to show its effectiveness and I very much like knowing that it is an essential amino acid and helps my body absorb protein and the health benefit(s) it provides. A side benefit is that it is recommended as beneficial for men's prostate health - good for my husband to use as well!"