If your veterinarian prescribes GASTROGARD for your horse’s ulcer treatment, you’ll find it easy to use. The cinnamon-flavored paste of GASTROGARD is well-accepted by horses. The convenient once-daily dosing can easily be incorporated into your horse’s normal routine. Plus, GASTROGARD is proven to heal ulcers even while your horse remains in training.

GASTROGARD is available through your veterinarian with a prescription. After a horse has been diagnosed with stomach ulcers by a veterinarian, treatment with GASTROGARD for 28 days is recommended. After treatment with GASTROGARD, ULCERGARD® (omeprazole) can be used during times of stress to prevent ulcers from returning.

  1. Before administering ULCERGARD, make sure the horse’s mouth contains no feed.
  2. Remove the cover from the tip of the syringe, and insert the syringe into the horse’s mouth at the interdental space.
  3. Depress the plunger until stopped by the knurled ring.
  4. The dose should be deposited on the back of the tongue or deep into the cheek pouch.
  5. Replace the syringe cap after use; remaining paste may be reused on following days until emptied.

Care should be taken to ensure that the horse consumes the complete dose. Treated animals should be observed briefly after administration to ensure that part of the dose is not lost or rejected. If any of the dose is lost, re-dosing is recommended.


We followed the veterinarian’s advice and started giving Bootz ULCERGARD® (omeprazole) a couple of days before shows and during shows. During the 2012 show season, we didn’t have any of the problems we’ve had in the past keeping his weight on and with his willingness to work. And the only difference is that we’ve been giving him ULCERGARD.

Sarah Harnish, Pequea, PA

Owner/Rider of Hobbys Best Yet (Bootz), American Paint Horse Association

Nicki seemed much more comfortable and willing to do his job following the treatment. We were just excited that the stomach ulcers wouldn’t keep him from living up to his potential. We really believe the use of ULCERGARD® (omeprazole) with our horse contributed to this incredible accomplishment.

Lori Bailey

Owner, Sea-Vu Noble Aire (Nicki) 2012 Reserve Grand National Champion, Road Hack Hunter Seat

I use ULCERGARD® (omeprazole) a few days before we leave for a show, and through the entire event. After all the work, time and effort that goes into getting these horses to their peak, I want to give them every advantage, and that includes preventing ulcers.

Ron Stratton, Bristol, TN

American Quarter Horse Association judge and Professional Horseman
IMPORTANT SAFETY INFORMATION: ULCERGARD can be used in horses that weigh at least 600 pounds. Safety in pregnant mares has not been determined.
CAUTION: Safety of GASTROGARD in pregnant or lactating mares has not been determined. For prescribing information click here.
*When administered for 8 or 28 days, ULCERGARD is proven to effectively prevent gastric ulcers in horses exposed to stressful conditions.
1 Animal Health Institute and American Veterinary Medical Association and American Veterinary Distributors Association. Veterinary Compounding Guidelines. 2005. Available at: Accessed February 20, 2010.
2 U.S. Department of Health and Human Services. Food and Drug Administration. FDA Basics. How does FDA oversee domestic and foreign drug manufacturing? Available at: Accessed February 29, 2012.
3 Stanley SD, Knych HK. Comparison of Pharmaceutical Equivalence for Commercially Available Preparations of Omeprazole. AAEP Proceedings. 2011;57:63.
4 Nieto JE, et al. Comparison of paste and suspension formulations of omeprazole in the healing of gastric ulcers in racehorses in active training. J Am Vet Med Assoc. 2002;8:1-5.
5 Data on file at Merial.
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