L Carnitine in Capsules Amazon.com: NOW Foods Supplements, L Carnitine 500mg, Purest Form, Amino Acid, Fitness Support*, 180 Veg Capsules : Health & Household 6 Healthy Foods High in L Carnitine L Carnitine 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