GlycineTHORNE Glycine provides 1g of the amino acid glycine per two capsule serving in vegetarian capsules. Glycine is an amino acid that plays multiple roles throughout the body. This pure amino acid formula is free from unnecessary additives. Glycine is one of three amino acids needed to produce creatine, which supplies energy to muscle and nerve cells. It is found in high concentrations in muscles, skin, and other connective tissues, with approximately 30