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 Nanoparticle mediated L carnitine delivery for improved male fertility ScienceDirect Acetyl L Carnitine Alpha Lipoic Acid Erectile Dysfunction L Carnitine and Male Fertility: Is Supplementation Beneficial? L Carnitine for Erectile Dysfunction: What the Evidence Shows and Practical Considerations