Tie By Vitamin E & Selenium Supplement for Horses PBS Animal Health Shop L Carnitine Injection The Vet Shed Animalife L Carnitine.mov L Carnitine 100mg ml 100ml 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 L Carnitine For Horses Animalife