Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis Have you tried supplementing with L Carnitine before? This nutrient promotes whole body health and wellness, from healthy blood sugar balance to cardiovascular health to healthy weight maintenance and more. Learn more 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 Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications Acetyl L Carnitine for Heart, Diabetes & Kidney Health Kidney Coach