Disorders of Fatty Acid Metabolism Concise Medical Knowledge History of L carnitine: Implications for renal disease Journal of Renal Nutrition 6.32 Fatty Acid Oxidation (Beta oxidation) Nutrition Flexbook 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. The Role of l Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation