L Carnitine Male Enhancement: What the Evidence Actually Shows L Carnitine Benefits for Male Erectile Dysfunction: What the Evidence Shows 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 L Carnitine Linus Pauling Institute Oregon State University