L Carnitine CAM Cancer Source Naturals Acetyl L Carnitine & Alpha Lipoic Acid 650 mg 60 Tablets Vitacost 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 L Carnitine Linus Pauling Institute Oregon State University L Carnitine Swanson Vitamins