L Carnitine: Benefits, Side Effects, FAQ, Sources, and Dosage Equimins L Carnitine Liquid Horse Health Liquid Vitamin Iron Mineral Supplement for Horses RED HORSE Vitofarma 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 Horse Energizer from Ceva Meta Librium Horse Metabolic and Behavior Calming Supplement 5 lbs