Horse Gastric Ulcer Recurrence Prevention

Preventing gastric ulcer recurrence in horses requires sustained management changes that address root causes rather than relying on medication indefinitely.

Key Facts

EGUS recurrence rates within 90 days of treatment discontinuation reach 50-90% if management risk factors persist
The primary risk factors — fasting periods, high concentrate diets, exercise stress, and NSAID use — are all modifiable
Prophylactic omeprazole use at half-dose during high-risk periods (competition, transport) reduces recurrence incidence
Dietary changes including hay-only or high-forage diets have the strongest evidence base for long-term recurrence prevention
Aloe vera supplementation has some evidence for squamous ulcer prevention but weaker evidence than dietary modification
Horses on long-term NSAIDs for arthritis have significantly elevated EGUS risk requiring concurrent management

Welfare Considerations

Gastric ulcer recurrence represents repeated welfare harms — periods of gastric pain that affect every aspect of a horse's daily life. Prevention is superior to repeated treatment cycles both from a welfare perspective (avoiding recurrent pain) and a practical one (repeated treatment courses are expensive and require repeated endoscopy to confirm). Accepting permanent management changes — more forage time, reduced concentrate reliance, stress management — may require lifestyle adjustments for both horse and owner, but represents a genuine welfare improvement over indefinite symptom management.

What You Can Do

Implement permanent management changes following ulcer treatment rather than returning to pre-ulcer management
Ensure minimum 75% of daily caloric intake comes from forage to maintain continuous acid buffering
Feed a small amount of hay or haylage 30 minutes before any exercise to buffer acid during work
Reduce or eliminate long fasting periods by using slow-feeder hay nets for overnight provision
Discuss prophylactic omeprazole for high-risk periods (transport, competition) with your vet before events
Monitor for behavioral recurrence indicators between endoscopic checks and report any recurrence of previous signs