L Carnitine Benefits for Male Erectile Dysfunction 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 Arginate 500 mg Combination of Carnitine & L Arginine Benefits L Carnitine Benefits for Male Erectile Dysfunction