What Is CoQ10 and L Carnitine, and How Can It Change Your Life? iThrive Essentials Understanding the Benefits and Uses of Carnitine in Health and Fitness Fitness Health L Carnitine Linus Pauling Institute Oregon State University 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 for erectile dysfunction L Carnitine for Male Enhancement: What the Evidence Actually Shows