L Carnitine helps shuttle fatty acids into the mitochondria (the power plants of your cells) where they can be burned for energy. It's often used in fat metabolism and energy support formulas. L Carnitine is Underrated. New Meta Review Reminds Us Why. Carnitine: Genetic Variants Affecting Mitochondrial Energy and Health Lipolysis Fatty Acid Oxidation and Ketone Bodies The Medical Biochemistry Page Acylcarnitine: Structure, Metabolism, Functions, and Advanced Analysis Techniques MetwareBio