L-Proline USP Kosher is a non-essential amino acid with a cyclic structure, important for protein synthesis and collagen formation. It is widely used in pharmaceuticals, nutraceuticals, and food formulations to support joint, skin, and connective tissue health. The USP grade ensures high purity, while kosher certification makes it suitable for dietary compliance in food and supplement applications. L-Proline also contributes to wound healing and metabolic functions in the body.