At Purina, we’ve spent more than 100 years developing superior nutrition for horses. After numerous scientific formulations, trials and refinements for our new line of supplements, we’ve found ways to give horses the boost they need to be their best. No more trying to find a supplement that works. No more frustration and expense for ones that under-deliver. Purina® Horse Supplements have high levels of high-quality ingredients and are researched to work — period.