L Carnitine for Fat Loss Supplements in Review The Carnitine Shuttle Cytosol Mitochondrial Fatty Acid Transport Frontiers Fatty acid oxidation in immune function Role of carnitine in disease Nutrition & Metabolism Springer Nature Link L Carnitine functions as a cofactor for long chain fatty acids across Download Scientific Diagram 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