Pure Encapsulations Acetyl l Carnitine (250 mg) 60 Capsules Pine Street Clinic L Carnitine food supplement molecule Stock Image Science Source Images 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 Source Naturals Acetyl L Carnitine, 500 mg, Tablets 30 count