L-Lysine is an essential amino acid necessary for growth, development, tissue maintenance, and repair.  It is crucial for the formation of collagen, a major part of the body's connective tissues.  It is an essential amino acid which means the body cannot manufacture it so it must be obtained through the diet or by supplementation.  

L-Lysine is necessary for the production of all proteins in the body. The human body needs it for healthy functioning and helps body tissue grow and recover from damage.

Benefits include promoting collagen growth, supporting the immune system, building muscle and assisting in recovering from intense workouts.