Supplementation for more than a week with L carnitine has the potential to increase carnitine in horses' muscles. This increase could improve the transportation of fatty acids into mitochondria to be used for Horse Antioxidant & Metabolic Boost Acetyl L Carnitine Foxden Equine Nupafeed Usa L Carnitine Daily Liquid for Horses 3 Liter IRON SUPPLEMENT PLUS L CARNITINE FOR ANEMIC HORSES Iron Horse Vitofarma L Carnitine Concentrate Oral Paste Horse Antioxidant Nupafeed USA Equimins L Carnitine Liquid