Lysine: Sources, Metabolism, Physiological Importance, and Use as a Supplement Source Naturals L Proline L Lysine, 275 mg 120 Tablets Smith's Food and Drug metabolism and energy L LYSINE 1000mg 2Bot 200 Tabs weight loss supplements eBay L Carnitine: Benefits, Side Effects, And Dosage, Per Dietitians Levocarnitine, commonly known as L Carnitine, is a naturally occurring compound that the body produces from the amino acids lysine and methionine. It plays a critical role in energy production by transporting fatty