L Carnitine & Arterial Plaque Role of L carnitine in Cardiovascular Health: Literature Review Cureus 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 metabolism in hypertensive heart failure Hypertension Research L Carnitine with Chromium Wycoff Wellness The Role of L Carnitine in Kidney Disease and Related Metabolic Dysfunctions