ACETYL L CARNITINE 250 MG 60 CAPS PURE ENCAPSULATION The Role of Carnitine in Myocardial Dysfunction 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: Benefits, Side Effects, Uses, Dosage and Research L Carnitine: Benefits, Uses, Side Effects, and More From the Literature Circulation