With Outlast Gastric Support Supplement Complete feed with built-in forage for breeding and competition horses It took over 100 years of industry-leading research and innovation to build today's Purina Omolene horse feed lineup. We started with naturally nutritious high-quality whole grains packed with antioxidants, phytonutrients and prebiotic fibers. From there, countless nutrition studies and feeding trials at the Purina Animal Nutrition Center led to scientific breakthroughs that keep our formulas on the cutting-edge of equine nutrition and performance. Because only innovations proven to have the highest level of performance and safety earn their place in Purina Omolene horse feeds, you can feed with full confidence. Whether you need to fuel intense competitive performance, support your horse's gastric health or nourish the growth of the next generation of equine athletes, Omolene feeds are built to help solve your toughest nutritional challenges. When there's greatness on the inside, it shows on the outside.