The Role of l Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation The Importance of the Fatty Acid Transporter L Carnitine in Non Alcoholic Fatty Liver Disease (NAFLD) L carnitine is primarily synthesized in the liver from the amino acids lysine and methionine through a series of four enzymatic reactions, with the liver and kidneys converting the precursor butyrobetaine into active Carnitine Acetyltransferase an overview ScienceDirect Topics Carnitines as Mitochondrial Modulators of Oocyte and Embryo Bioenergetics Frontiers Fatty acid oxidation in immune function