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 Acetyl L Carnitine VS L Carnitine: Which is Better? N Acetyl L lysine methyl amide Chem Impex Structures of analytes. (a) L lysine HCl and (b) L carnitine L tartrate Download Scientific Diagram