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 Your trusted partner in animal Health CARTINE L carintine CARTINE supports energy production in the muscles by aiding in the transport of fatty acids into mitochondria for energy production, enhancing endurance, reducing Acetyl L Carnitine (ALCAR) Supplement for Horses Mad Barn Meta Librium Horse Metabolic and Behavior Calming Supplement 5 lbs Nupafeed L Carnitine Concentrate Oral Paste Horse Antioxidant