L Carnitine Benefits for Fat Burning and How to Use ICONFIT 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 L Carnitine L carnitine containing Food Groups Healthy Products Containing Stock Vector (Royalty Free) 2219112733 Shutterstock Amazon.com: Now Foods L Carnitine 500 mg 180 Capsules : Health & Household