If you're putting in the work but the scale isn't moving, your body might just need a little help tapping into its fat stores. That's where L Carnitine comes in. It's not a Understanding the Benefits and Uses of Carnitine in Health and Fitness Fitness Health 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 L carnitine is an amino acid that is produced in your body that helps the body turn fat into energy. Carnitine is found in nearly all cells of the body and researchers have l carnitine: Nutrition, pathology, and health benefits ScienceDirect The role of carnitine in normal and altered fatty acid metabolism ScienceDirect