What is Vitacost L-Lysine & Proline Complex Vitacost L-Lysine & L-Proline Complex combines the amino acids L-lysine and L-proline with ascorbic acid, green tea, quercetin and a citrus bioflavonoid complex.L-lysine is an essential amino acid, meaning it must be obtained through diet. L-lysine is necessary for the formation of collagen, connective and bone tissue.* Its found in large quantities in muscle tissue. L-proline is a nonessential amino acid, meaning it can be manufactured in the body from other amino acids, L-glutamate and L-ornithine. Its present throughout body tissues, with the highest concentration in collagen.* Ascorbic acid is an antioxidant that protects low density lipoproteins (LDL) from oxidation, contributes to healthy collagen and connective tissue formation, and promotes arterial flexibility and healthy endothelial function.* These functions work together to offer benefits to the circulatory and cardiovascular systems.* Ascorbic acid also works in conjunction with lysine- and proline-based enzymes in many of the above related functions.*Green tea, quercetin and the citrus bioflavonoid complex are antioxidants that can play a role in supporting the cardiovascular system, promoting healthy DNA function and duplication, and supporting the integrity of the vascular system.* How does Vitacost L-Lysine & Proline Complex support heath Supports cardiovascular health.*Promotes the formation of collagen and connective tissue.*Supports healthy DNA formation.*Promotes healthy gene expression.* Supports blood vessel health.*Promotes healthy endothelial tissue function.*Protects LDL cholesterol from oxidation.*Why choose Vitacost L-Lysine & L-Proline Complex Unique multi-nutrient formula. Great value!About VitacostAll Vitacost products are laboratory tested to meet FDA standards for identity, purity and composition. All products are tested for heavy metals, microbiology and contaminants. Vitacost ...