Balanced Nutrition to Support Overall Health - Formulated by Purina Ph.D. Equine Nutritionists using only high-quality ingredients, Ultium® Gastric Care horse feed is designed to meet the daily protein, vitamin, and mineral needs of equine athletes.|Energy to Support High-Performing Horses - Ultium® Gastric Care horse feed is nutritionally balanced and has the calories needed to support body condition and performance in smaller meals.| Highly Digestible Fiber Sources Support Optimal Hindgut Environment - Formulated with beet pulp, alfalfa and soy hulls to provide prebiotic fibers to the hindgut, which support beneficial microbes and gastrointestinal health.|Immune Support for Horses Affected by the Stress of Competition - Ultium® Gastric Care horse feed contains a specialized yeast extract to help support immune systems of horses affected by stress. Throughout the rigors of competition, you can have confidence your horse has the support needed for peak performance.|Purina® Amplify® Supplement Added to Support Body Condition - Multiple sources of fatty acids from flaxseed, stabilized rice bran, and vegetable oils help maintain body condition, healthy hair and skin.|Purina® Outlast® Supplement Added to Support Proper Gastric pH - Outlast® supplement contains a unique blend of ingredients that are designed to support gastric balance, giving you and your horse the confidence to perform. Our Ph.D. Equine Nutritionists have spent hundreds of hours (and counting) researching Outlast® supplement at our state-of-the-art Purina Animal Nutrition Center in Missouri. Hundreds of performance horses around the country participated in our nutrition research field tests and their owners loved the results.