L Carnitine Common Equine Supplement Ingredients Explained AskAnimalweb L Carnitine For Horses Animalife L Carnitine.mov IRON HORSE L Carnitine 90 kaps. L Carnitine is amino acid supplement that enhances energy production in performance horses. It works through 6 ways: Muscle level of L Carnitine influence the exercise capacity of a horse. L Acetyl L Carnitine (ALCAR) Supplement for Horses Mad Barn