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 Acetyl L Carnitine vs L Carnitine: 4 Key Differences Momentous Supplements don't replace the workbut they can support it L Carnitine helps your body turn fat into usable energy, so you can push harder and recover better. Consistency first. Supplements second. Results 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 L Carnitine Linus Pauling Institute Oregon State University Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis