Chronic sore feet? Laminitis? Elevated insulin levels? Easy keeper staying large on little food? Discover veterinarian-developed, farrier-approved HEIRO and get your horse back to grass pasture faster. It’s a safe, certified, all-natural supplement horses love. Great value and guaranteed results! In 30, 40 (for first-time users) and 90 serving sizes. New Dog HEIRO also now available.