Understanding the Benefits and Uses of Carnitine in Health and Fitness Fitness Health Acetyl L Carnitine vs L Carnitine: 4 Key Differences Momentous 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 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