L Carnitine Uses & Benefits Explained: A Complete Guide The Science of Good Health Levocarnitine, commonly known as L Carnitine, is a naturally occurring compound that the body produces from the amino acids lysine and methionine. It plays a critical role in energy production by transporting fatty L Carnitine 1500 mg with Vitamin B Promote Physical Performance MaxionNutrition L CARNITINE PLUS ( L CARNITINE L TARTARATE 1000 MG + ZINC GLUCONATE 50 MG ) 20 FILM COATD TABLETS L Carnitine: The Energy Booster Your Body Loves Turn fat into fuel and power up your recovery with one of our favorite performance vitamins. Boosts metabolism & fat burning Herbiotics L Carnitine (400 Mg) 30 Capsules