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Purina Outlast Gastric Support Supplement

Looking for a horse feed that provides gastric support? Purina Outlast Gastric Support Supplement is formulated to support gastric health and proper pH. It is estimated that up to 90 percent of active horses experience gastric discomfort, a­ffecting health, attitude and performance. Common activities including stall confinement, exercise, transportation, weaning and few environments such as events and shows are known to cause stress and gastric discomfort. Purina® Outlast™ Gastric Support Supplement was developed by our Ph.D. Equine Nutritionists to support a healthy gastric environment.
Find out more about this product and the other new Purina horse products by checking their website here.


Features & Benefits

Designed to Support Gastric Balance
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.
Field-tested and Horse-approved
As part of our rigorous testing process, hundreds of performance horses around the country participated in our nutrition research.
Outlast™ supplement contains a unique blend of ingredients that are designed to support gastric balance, giving you and your horse the confidence to perform.
Flexible Feeding
Our research shows horses enjoy Outlast™ supplement top-dressed or fed as a snack before a stressful event.
Incredible Value
Finally, while we know your horse’s comfort has no price, Outlast™ supplement provides an a­ffordable tool to support your horse’s gastric health.


Sun-cured alfalfa, wheat middlings, seaweed-derived calcium, cane molasses, magnesium oxide, citric acid.


Feeding Directions: This product is designed to be top-dressed on your horse’s regular feed ration and/or fed as a “snack” within one hour prior to engaging in a potentially stressful event such as exercise, traveling, confinement, etc. • The feeding rate for both the top-dress and the “snack” is 20 g per 100 - 125 lb. body weight. For example a 1,000 – 1,250 lb. horse would receive 200 g of the supplement per feeding. This feeding rate is equivalent to 1.25 cups (10-oz with a dry-good measuring cup). See chart for specific recommendations. • Typical feeding rate is 3-4 times per day—top-dressed with each meal and a snack 30-60 minutes prior to a stressful event. Do not feed more than 6 times per day at the recommended rates for your horse’s weight. • Meals of Ultium® Gastric Care Horse Formula or Race Ready® GT Race Horse Formula include Outlast™ Gastric Support Supplement, so each meal will count as one Outlast™ supplement top-dress/snack.
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