Did you know L carnitine, a vital amino acid, is naturally produced by your body and found in various foods? While acetyl L carnitine (ALCAR) can be a beneficial supplement for some, most people get 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 tartrate (Levocarnitine tartrate) Analytica Chemie Levocarnitine Oral Solution USP (1g per 10mLmulti dose) Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis