Dietary supplement consisting of only one chain, which is L-glycine. L-glycine is an organic chemical compound from the group of endogenous amino acids. Despite being structurally the smallest amino acid (it has only one hydrogen atom in the side chain), it plays a very important role in the functioning of our body. It is a protein amino acid that creates protein structures (e.g. collagen), but also acts as a neurotransmitter in the central nervous system. Glycine is involved in the production of DNA, phospholipids, and collagen and also has a significant effect on the release of ATP (adenosine triphosphate), which contains high-energy bonds necessary for all life processes.