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 The Carnitine Defense: An All Natural Nutraceutical Formula to Prevent Heart Disease, Control Diabetes and Help You Stay Healthy DeFelice M.D., Stephen L.: 9781579541330 AbeBooks Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis Acetyl L Carnitine for Heart, Diabetes & Kidney Health Kidney Coach