#1 L-Lysine 1000mg 180 Tablets By Best Naturals (Clinically Proven -- Essential Amino Acid -- Double Strength) - Manufactured in a USA Based GMP Cert

L-Lysine is an essential free-form amino acid which acts as a precursor for other amino acids, including 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.