How GASTROGARD® (omeprazole) works
A horse’s stomach is relatively small and cannot handle large amounts of feed —
so it must eat frequent, small portions of feed. It produces acid throughout the
When roughage intake is interrupted acidity increases, which can lead to ulceration,
or eating away at the stomach’s protective lining. By reducing appetite, this starts
a vicious cycle of pain and suffering for your horse.2
GASTROGARD breaks the cycle at the acid pump
Unlike antacids and other products being marketed without FDA approval for treating
equine stomach ulcers, GASTROGARD stops stomach acid production at its source —
by inhibiting the acid pump.3
This allows GASTROGARD to provide superior treatment and healing of equine stomach
ulcers4 — because its mode of action blocks acid secretion, regardless
of the stimulus.5
Important safety information:
CAUTION: Safety of GASTROGARD in pregnant or lactating mares has not been determined.
For prescription information for GASTROGARD,
®GASTROGARD is a registered trademark of the AstraZeneca Group of Companies.
1Kitchen DL, Merritt AM, Burrow JA. Histamine-induced gastric acid secretion
in horses. AJVR 1998;59(10):1303-1306.
2Murray MJ. Disorders of the stomach. In: Smith BP, ed. Large Animal
Internal Medicine. St. Louis; CV Mosby, 1990;710-717.
3Equine Gastric Ulcer Council. Recommendations for the diagnosis and
treatment of Equine Gasgric Ulcer Syndrome (EGUS). Equine Vet Educ 1999;11:262-272.
4Freedom of Information (FOI) Summary for GASTROGARD Oral Paste for Horses.
5Nieto, JE, et al. Comparison of omeprazole and cimetidine in healing
of gastric ulcers and prevention of recurrence in horses. Equine Vet Educ
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Photography by David R. Stoecklein