Source Naturals, L Carnitine, fumarate, 250mg, 60 ct Carnitine: the claims and why it may not work Pure Encapsulations Acetyl l Carnitine (250 mg) 60 Capsules Pine Street Clinic Dietary sources of choline, phosphatidylcholine, and L carnitine Download Scientific Diagram 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