Gastric Ulcer Support for Horses: Top 5 Options in Canada for 2025 — Veterinarian-Reviewed Guide to Relief, Prevention and Long-Term Gut Health
Published on Thursday, August 21, 2025
Formulations aimed at preventing and soothing equine gastric ulcers through buffering agents, mucosal protectants, and targeted ingredients like pectin-lecithin complexes are increasingly popular in Canada. Trending products combine acid buffering with microbiome-friendly additives and management-focused guidance for long-term gastric health. Canadian horse owners and professionals tend to choose products that balance clinical evidence, ease of administration (paste, pellet, or feed-through), proven active ingredients, and availability through farm stores, feed suppliers, or veterinary channels. Preferences also reflect practical concerns: horses in performance or high-stress environments often need stronger medical intervention, while leisure and pasture-kept horses typically benefit from preventive daily supplements and management changes such as increased forage and reduced acidity triggers.
Top Picks Summary
Purina Outlast Gastric Support Supplement
Purina Outlast earns a best-in-class position for gastric ulcer support in horses by delivering a continuous, palatable feed-through supplement that helps stabilize gastric pH and coat the stomach lining. It is often chosen for its broad availability and cost-effective, day-to-day management compared with single-use pharmaceuticals like UlcerGard, while offering a simpler, lower-cost alternative to premium, customized programs such as Mad Barn's Visceral+.
Succeed Digestive Conditioning Program
Succeed is a market-leading conditioning program that emphasizes a systematic, evidence-based protocol to strengthen mucosal health and digestive resilience rather than relying solely on ingredients. It provides a measurable, programmatic advantage—often used by performance barns and trainers—making it more of a clinical conditioning investment than a daily low-cost supplement, and it is typically used in concert with short-term pharmaceuticals like UlcerGard for acute cases.
$250-350 CAD
Equishure Hindgut Buffer
Equishure Hindgut Buffer is recognized for addressing hindgut acidity and fermentation balance—a complementary, cost-efficient strategy to gastric-focused products—making it valuable for long-term management and as an adjunct to acid-suppressant therapies. Its niche technical advantage is stabilizing the hindgut environment (reducing risk of secondary hindgut acidosis) where products like UlcerGard do not act, and it typically offers a lower daily cost compared with premium, diagnostics-driven programs.
$60-120 CAD
What the Research Says About Equine Gastric Ulcer Support
Veterinary research supports a layered approach to gastric ulcer care: medical acid suppression for active lesions, protective and mucosal-supporting ingredients to complement healing, and nutritional or management interventions for long-term prevention. The following plain-language summaries reflect common, evidence-informed findings from equine clinical trials and university studies.
Omeprazole-based treatments (the active in products like UlcerGard) reliably reduce gastric acidity and have been shown in clinical trials to promote healing of squamous gastric ulcers within a 2 to 4 week treatment window when used as directed.
Pectin-lecithin complexes and similar mucosal protectants can form a protective surface layer and, when used with buffering strategies, help reduce irritation; several studies show improved gastric comfort and reduced lesion scores when these agents are part of a broader program.
Dietary buffering agents and increased forage reduce periods of low pH in the stomach; research consistently finds management changes (more frequent feeding, higher forage, fewer high-starch meals) are as important as any supplement for prevention.
Probiotics and microbiome-friendly additives can support hindgut health and may help mitigate secondary digestive upset associated with ulcer treatments; evidence is growing but varies by strain and formulation.
Hindgut buffers (products like Equishure) address fermentation and acidosis in the large intestine, which is complementary to gastric-focused treatments and can reduce rebound digestive problems after acid-suppression therapy.
Comprehensive programs that combine medical treatment, protective supplements, and management adjustments (for example, the Succeed Digestive Conditioning Program or tailored regimens with Purina Outlast or Mad Barn Visceral+) show better long-term outcomes than single-mode interventions alone.
Frequently Asked Questions
What is the best gastric ulcer support for horses in Canada in 2026?
As of April 2026, Purina Outlast Gastric Support Supplement is the top choice for gastric ulcer support for horses in Canada. Purina Outlast earns a best-in-class position for gastric ulcer support in horses by delivering a continuous, palatable feed-through supplement that helps stabilize gastric pH and coat the stomach lining. It is often chosen for its broad availability and cost-effective, day-to-day management compared with single-use pharmaceuticals like UlcerGard, while offering a simpler, lower-cost alternative to premium, customized programs such as Mad Barn's Visceral+.
What are the key features of Purina Outlast Gastric Support Supplement?
Purina Outlast Gastric Support Supplement features: Designed as a daily feed-through supplement to help stabilize gastric pH during regular training and travel., Formulated to be palatable and easy to top-dress onto grain or feed for consistent use., From a major equine-nutrition brand with product support and feeding guidelines for performance horses..
What are the benefits of Purina Outlast Gastric Support Supplement?
The main benefits include: Lining support — time-tested, Daily pH balance — oat-sweet, Stable routine aid — easy-scoop.
How does Purina Outlast Gastric Support Supplement compare to Mad Barn Visceral+ Gastric Support?
Based on April 2026 data, Mad Barn Visceral+ Gastric Support has a higher rating (4.6/5 vs 4.3/5). However, Purina Outlast Gastric Support Supplement offers competitive value with Designed as a daily feed-through supplement to help stabilize gastric pH during regular training and travel., making it a better choice for those who prioritize these features.
Conclusion
In Canada in 2025, a pragmatic, evidence-informed mix of products and management remains the best route to reduce ulcer risk and support healing. The five options highlighted on this page — Purina Outlast Gastric Support Supplement, Mad Barn Visceral+ Gastric Support, Succeed Digestive Conditioning Program, UlcerGard Oral Paste, and Equishure Hindgut Buffer — each play distinct roles: UlcerGard Oral Paste is the preferred option for veterinarian-guided medical treatment of active ulcers, while Purina Outlast, Mad Barn Visceral+, Succeed, and Equishure are strong choices for prevention, conditioning, and hindgut support. I hope you found what you were looking for; if you want to narrow choices by administration style, price, or veterinary recommendations, use the search to refine or expand your results.