Now with Outlast® Gastric Support Supplement! For Horses in Light to Moderate Work. Exceptional horse feeds like Purina® Omolene® aren’t built overnight! It took over 100 years of industry-leading research and innovation to build today’s Purina® Omolene® horse feed lineup. We start with naturally nutritious high-quality whole grains packed with antioxidants, phytonutrients and prebiotic fibers. When there’s greatness on the inside, it shows on the outside. Click here for guaranteed analysis and more information.