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 Pure Encapsulations Acetyl l Carnitine (250 mg) 60 Capsules Pine Street Clinic L Carnitine Linus Pauling Institute Oregon State University Source Naturals Acetyl L Carnitine & Alpha Lipoic Acid 650 mg 60 Tablets Vitacost Source Naturals Acetyl L Carnitine & Alpha Lipoic Acid