Show your horses (and their bellies!) some love with Purina^® Outlast^® Horse Treats. These treats contain the Outlast^® Gastric Support Supplement that helps support optimal gastric pH. Purina^® Outlast^® Gastric Support Supplement has been researched at the Purina Animal Nutrition Center and is a perfect complement to any horse?s diet. Your horse will love this great-tasting treat, and you will feel great knowing that you are helping to support their gastric health.