L Carnitine Injection Levocarnitine IV 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 Carnitine L Carnitine 1500 mg with Vitamin B Promote Physical Performance MaxionNutrition L Carnitine Linus Pauling Institute Oregon State University Liquid L Carnitine Core Nutritionals