L Carnitine functions as a cofactor for long chain fatty acids across Download Scientific Diagram The Importance of the Fatty Acid Transporter L Carnitine in Non Alcoholic Fatty Liver Disease (NAFLD) Carnitine transport and fatty acid oxidation ScienceDirect 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 Structural basis of sodium ion dependent carnitine transport by OCTN2 Nature Communications L Carnitine for Fat Loss Supplements in Review