Acetyl L Carnitine Acetyl L Carnitine, 500 mg, 200 Quick Release Capsules NutraKey Health Acetyl L Carnitine 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 Codeage Liposomal Acetyl L Carnitine 500mg Supplement, 3 Month Supply, Liposomal ALC, Non GMO 90 ct : Target