Gastric ulcers are one of the most common health issues in horses. Research shows that 60 to 90 percent of sport horses are affected to some degree. Yet they are often recognised late because symptoms can be subtle.
What are gastric ulcers in horses?
Gastric ulcers in horses fall under EGUS (Equine Gastric Ulcer Syndrome). The horse's stomach has two regions: an upper squamous (non-glandular) part and a lower glandular part. Squamous ulcers are most common and occur when stomach acid contacts the unprotected upper lining. Glandular ulcers are associated with stress and NSAID use and tend to be more persistent.
Symptoms of gastric ulcers
Common signs include decreased appetite, weight loss, dull coat, behavioural changes such as girthiness, cribbing, yawning, and flank-watching. Performance decline is frequently observed in sport horses but often misattributed to training issues.
Causes of gastric ulcers
The horse's stomach produces acid continuously. Key risk factors include long periods without roughage, high-grain diets, stress (transport, competition, stabling changes), NSAID use, and intense exercise on an empty stomach.
Diagnosis
Gastroscopy is the gold standard. Ulcers are graded from 0 (intact mucosa) to 4 (extensive, deep, possibly bleeding ulcers). Symptom severity does not always correlate with ulcer grade.
Treatment and prevention
Management is key: unlimited roughage access, alfalfa for its buffering calcium content, stress reduction, and pH support. Horse Tonic PH is specifically formulated to support gastric pH with calcium carbonate, sodium bicarbonate and lithothamnion. Always offer hay before exercise to create a fibre mat that prevents acid splash.
The role of nutrition and supplements
Prevention starts with nutrition. For sport horses under extra strain, pH buffering is a key factor. PH provides daily protection at just EUR 0.30 per day. After gastric issues, Lacta Ease supports gut flora recovery.
If you recognise these symptoms, consult your vet for a gastroscopy and start preventive measures immediately.