The Oralx Micro B-1 Paste Horse Supplement supports healthy vitamin B1 levels in horses. If your horse eats a lower-quality hay or is stressed because of illness or rigorous training， his vitamin B1 levels—and his health—can suffer. This supplement helps to replenish those levels， supporting normal weight gain， a healthy nervous system and a healthier， happier horse. The oral dosing syringe makes it easy to administer this supplement as needed.