L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe Prolab L Carnitine 500mg Boost Metabolism & Burn Fat for Fuel Keto Weight Loss Prolab Nutrition Nutrient Tip Tuesday: Meet the Fat Burning Powerhouse: L Carnitine This essential nutrient acts as a shuttle, transporting fatty acids directly into your mitochondria to be burned for ATP (energy). Essentially, it helps your PSN Acetyl L Carnitine Powder Pure Source Nutrition Ingredient Spotlight: L Carnitine Source: Biosynthesised in the body from the amino acids Lysine and Methionine, L Carnitine is a conditionally essential nutrient involved in energy metabolism and fat transport. Key Benefits