L Carnitine with Chromium Wycoff Wellness L Carnitine & Arterial Plaque 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 L Carnitine in Mitochondria Encyclopedia MDPI Linear association of 10 year changes in L carnitine levels with the Download Scientific Diagram