L Carnitine vs L Arginine: Understanding Their Differences and Benefit Fitness Health L Carnitine: What it's used for, benefits and how to take it correctly Justloading Meet L Carnitine a naturally occurring amino acid that plays a key role in helping the body convert fat into usable energy. It works by transporting fatty acids into your cells to How Much L Carnitine Per Day: Expert Guide The Science of Good Health