L-Glycine is the simplest amino acid and serves as a building block for proteins and various biomolecules. It acts as an inhibitory neurotransmitter in the central nervous system and is involved in the synthesis of purines, porphyrins, and creatine. Glycine plays a crucial role in collagen synthesis and is important for maintaining healthy skin, joints, and connective tissue. It also helps regulate blood sugar levels and supports digestive health.