Source Naturals L-Lysine 500 mg 100 Tab

L-lysine free form l-lysine is an essential amino acid which acts as a precursor for several other amino acids, including l-citrulline (needed in the body for normal protein metabolism) and l-carnitine (needed for fat metabolism). L-lysine is crucial for the formation of collagen, a major part of the body's connective tissues. L-lysine also contributes to energy production when converted to acetyl coenzyme a, one of the principal fuels for the krebs cycle. sorbitol, stearic acid, modified cellulose gum and magnesium stearate.ingredients: l-lysine (as l-lysine hcl) -500 mgother ingredients: 1 tablet 1 to 2 times daily..