Collagen Forte supplies significant amounts of vitamin C and L-lysine to support collagen synthesis. Vitamin C has numerous biological functions. Foremost, it is essential for the synthesis of collagen and glycosaminoglycans, which are the building materials of all connective tissues, such as skin, blood vessels, tendons, joint cartilage and bone. Vitamin C is the required coenzyme for two groups of enzymes that catalyze the crosslinking of collagen. L-Lysine is an essential amino acid and is required by the body for collagen cross-linking. Collagen cross-linking is important for resiliency and elasticity of the collagen and elastin present in all connective tissues and blood vessel walls in the body. L-Proline and L-threonine are additional essential amino acids provided in the Collagen Forte formulation.