Amazon.com: Source Naturals Acetyl L Carnitine & Alpha Lipoic Acid, for Cellular Vitality*, 650mg 60 Tablets : Health & Household Source Naturals, L Carnitine, fumarate, 250mg, 60 ct 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 Injectable L Carnitine: What It Is, How It Works, and Who Should Use It Mesotherapy Cocktails, Exosomes Regenerative Skin Boosters Dietary sources of choline, phosphatidylcholine, and L carnitine Download Scientific Diagram