Keep your aging athlete active with Purina Ultium Senior, a High-Fat and High-Fiber Horse Formula carefully designed for fueling the unique needs of senior equine athletes. This energy-dense formula is designed to help seniors get the most out of their feed while fueling performance. Its patented formula supports gastric health and comfort with Outlast technology and Amplify High-Fat Nugget to promote ideal body condition. This senior horse feed also contains ActivAge to support immune function and metabolism. This calorie-dense, concentrated formula is low in starch & sugar but a taste your horses will still enjoy. Fuels Performance - Powerful energy-dense formula with cool-burning energy from fats and fermentable fibers to help senior horses get the most out of their feed Supports Healthy Aging - With patented ActivAge prebiotic technology for mobility, metabolism & immune support, added antioxidants and added fat for a healthy-looking hair coat and skin Supports Gastric Comfort - With a proprietary blend of calcium and magnesium sourced from seaweed in OUTLAST gastric support technology Taste Horses Enjoy - For proper nutrient intake Highly Digestible - With added fiber from sources like beet pulp and alfalfa to support hindgut health Low Starch & Sugar - Carefully designed formula appropriate for horses sensitive to soluble carbohydrates