Acetyl L Carnitine (ALCAR) Supplement for Horses Mad Barn L Carnitine Plus Power Blendz MAD BARN Acteyl L Carnitine Performance & Energy Metabolism Horse Powder Supplement, 2.2 lb bag Chewy.com 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 Nerve Support Supplement Acetyl L Carnitine + Alpha Lipoic Acid Zana Nutrition Nupafeed L Carnitine Concentrate Oral Paste Horse Antioxidant