What is the role of carnitine (L carnitine) in the management of heart failure? 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: the claims and why it may not work 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 Have you tried supplementing with L Carnitine before? This nutrient promotes whole body health and wellness, from healthy blood sugar balance to cardiovascular health to healthy weight maintenance and more. Learn more