Ulcers are highly prevalent in horses. Studies have shown that horses involved in typical pleasure activities can have surprisingly high rates of gastric ulceration, between 40% and 70% depending on studies have also shown gastric ulceration can occur in as little as 3 days under certain circumstances.
The behavioral and clinical signs of gastric ulceration are varied. To name only a few, they include:
- Changes in eating and drinking behavior
- Weight loss
- Change in attitude (for the worse)
- Recurrent colic
- Dull hair coat
- Less-than-optimal performance
- Foals may also grind their teeth or lay on their backs
Some of the most common stress factors that can lead to stomach ulcers are:
- Competition
- Travel
- Training
- Trailering
- Limited turnout or grazing
- Weekend shows or events’
- Lay-up due to sickness or injury
- Changes in routine





