Benefits of Acetyl L Carnitine Simply Supplements Usefulness of Carnitine Supplementation for the Complications of Liver Cirrhosis Comprehensive review of the expanding roles of the carnitine pool in metabolic physiology: beyond fatty acid oxidation Journal of Translational Medicine Springer Nature Link Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis From brain to muscle, L Carnitine plays a key role in energy metabolism, endurance, and recovery by supporting efficient fat to energy conversion.