Stomach ulcers or Equine Gastric Ulcer Syndrome (EGUS) is a common condition that affects many disciplines and breeds of horses. In racehorses, studies have shown that more than 90% of horses in training may have gastric ulcers while a study of dressage and hunters showed that more than 60% were affected. Ulcers are common among all groups of horses that train or show.

Symptoms of gastric ulcers are often difficult to detect, although they may have a serious effect on performance and horse comfort. Many horses will show only one symptom. Some example symptoms in adult horses include: attitude changes, dullness, poor or reduced performance, poor condition, decreased appetite, and colic.

EGUS can be difficult to recognize since the symptoms may often be vague. The only accurate way to diagnose and determine the severity of ulcers is by gastroscopy. Gastroscopy is a relatively non-invasive procedure that involves

passing a 3-meter video endoscope into the stomach to check for ulcers.



  • Schedule a gastroscopy appointment with our reception team
  • Fast the horse for a minimum of 16 hours prior to the gastroscopy (this means no feed, no hay, no treats).  Some horses may need to be stalled without shavings to prevent them from eating bedding.   The horse can have access to water up until you load on the trailer.
  • The gastroscopy procedure is performed.
  • After the procedure, the appropriate treatment plan for any ulcers seen will be decided by the veterinarian. If the horse needs to stay overnight due to pickup time conflict, he/she may do so but the patient is also able to go home right after the appointment.

The good news is that gastric ulcers can be successfully treated. Treatment involves the use of anti-ulcer medications as well as changes in management factors and feeding. There are also prevention protocols that can be designed for horses that participate in high-risk activities.

If you suspect your horse might be suffering from gastric ulcers, let the experienced gastroscopy team at Carolina Equine Hospital make a clear diagnosis. We have the experience, equipment, and specialized knowledge to help you understand what’s happening with the health of your animal. Contact us today to make an appointment.


Find us on the map