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Outlast® supplement contains a unique blend of ingredients that are designed to support gastric balance, giving you and your horse the confidence to perform.
Purina's Ph.D. Equine Nutritionists have spent hundreds of hours (and counting) researching Outlast® supplement at our state-of-the-art nutrition research farm in Missouri.
As part of our rigorous testing process, hundreds of performance horses around the country participated in our nutrition research.
Our research shows horses enjoy Outlast® supplement top-dressed or fed as a snack before a stressful event.
Finally, while we know your horse’s comfort has no price, Outlast® supplement provides an affordable tool to support your horse’s gastric health.
| Horse Body Weight (lbs.) | Supplement (grams by weight) | Number of Cups* per Meal or Snack |
| 3.0500 to 750 | 100 | 0.75 |
| 750 to 1,000 | 150 | 1.00 |
| 1,000 to 1,250 | 200 | 1.25 |
| 1,250 to 1,500 | 250 | 1.50 |
| 1,500 to 1,750 | 300 | 1.75 |
| 1,750 to 2,000 | 350 | 2.00 |
Ships within 48 hours · Estimated delivery Sep 17 - Sep 22
US$40
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