There are always the “latest and greatest” horse supplements on the market, but don’t let trendy overshadow proven. Purina® Outlast® supplement is tried and true: • Works in 2 minutes to neutralize acid that leads to gastric discomfort • 520 hours of research • 95,492 field-tested feedings • 400 customer reviews with an average 4.9/5 product rating #FeedGreatness to outlast the competition. | Purina Horse Feed