What is L carnitine & What does it do to your body XXL Acetyl L Carnitine (ALCAR) Supplement for Horses Mad Barn The Importance of the Fatty Acid Transporter L Carnitine in Non Alcoholic Fatty Liver Disease (NAFLD) L Carnitine is a naturally occurring compound that helps your body turn fat into energy by transporting fatty acids into the mitochondriayour body's powerhouses. More energy means stronger performance, better fat burning, and L Carnitine