I N C E P T I O N A I

Top 6 Digestive and Probiotic Supplements for Horses in Canada (2025): Veterinarian-Recommended Options to Stabilize Hindgut, Reduce Gas and Support Ulcer and Recovery Care

Prebiotics, probiotics, digestive enzymes and gastric support formulas designed to stabilize hindgut flora, reduce gas and support ulcer-prone horses make up a fast-growing category for Canadian horse owners in 2025. These products appeal because they target common, performance-limiting issues such as colic risk from hindgut imbalance, gas and bloating, reduced feed efficiency during transitions, and gastric ulcers tied to stress or training. Consumers in Canada are increasingly looking for science-backed formulations, veterinarian endorsements, clear dosing for different sizes and situations, and options available through local retailers and online suppliers. The category includes specialized formulas for transitional feeding, recovery after antibiotic treatment, daily maintenance for performance and broodmares, and targeted gastric buffers and alginate-based supports for ulcer-prone horses. Practical benefits that drive purchases include faster recovery, steadier temperament, improved feed utilization, and the confidence of products that are formulated or verified by equine professionals.

Top Picks Summary

  1. Mad Barn Optimum Probiotic Paste
  2. Bio-Mos by Alltech
  3. Tribute Equine Nutrition Essential K GC Plus
  4. Martin's ProBios Equine Enzymes
  5. Mad Barn Visceral+ Gastric Support
  6. Vetoquinol Zylkene Equine
1
BEST PROBIOTIC PASTES FOR HORSES

Mad Barn Optimum Probiotic Paste

Mad Barn
🏠 Local Product

Mad Barn Optimum Probiotic Paste differentiates itself through transparency and precision: multi-strain, high-count formulas with clearly listed strains and CFU targets aimed at performance and metabolic support. Compared with legacy brands it appeals to evidence-oriented owners and stables, and its direct-to-consumer and subscription pricing models can deliver better long-term value for ongoing supplementation despite a similar per-dose cost to other premium pastes.

4.2
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  • Multi-strain boost

  • Daily gut balance

  • Multi-strain boost

  • Daily gut balance

Review Summary

82%

"Owners praise Mad Barn Optimum Probiotic Paste for improving manure consistency and overall gut balance, noting good palatability and clear short-term benefits; a few report less effect in chronic or severe issues."

  • Trailer-ready tummy

  • Multi-strain probiotic and prebiotic blend formulated to support hindgut microbial balance.

  • Trailer-ready tummy

  • Multi-strain probiotic and prebiotic blend formulated to support hindgut microbial balance.

Increased Safety & Security

Time-Saving Convenience

Mad Barn Optimum Probiotic Paste differentiates itself through transparency and precision: multi-strain, high-count formulas with clearly listed strains and CFU targets aimed at performance and metabolic support. Compared with legacy brands it appeals to evidence-oriented owners and stables, and its direct-to-consumer and subscription pricing models can deliver better long-term value for ongoing supplementation despite a similar per-dose cost to other premium pastes.

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From 91.99$
2
BEST PROBIOTIC POWDERS FOR HORSES

Bio-Mos by Alltech

Bio-Mos by Alltech

Bio-Mos by Alltech is a globally recognized, research-backed mannan-oligosaccharide prebiotic that is often used alongside probiotic powders to enhance gut stability rather than as a live-culture product itself. As a market leader in prebiotic supplementation, Bio-Mos provides economies of scale and extensive trial data that make it financially and technically attractive for producers and performance yards, and it is commonly paired with live probiotics like Mad Barn or Omega Alpha to create a complementary gut-management program.

4.5
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  • Blocks pathogens

  • Feed efficiency

  • Blocks pathogens

  • Feed efficiency

Review Summary

88%

"Bio-Mos by Alltech is widely respected for supporting gut integrity and reducing scours, with many users citing measurable benefits in foals and performance horses; some consider it pricey and expect gradual, not immediate, changes. It’s a market-leading prebiotic often used alongside probiotics."

  • Yeast-powered charm

  • Derived from yeast cell walls (mannan-oligosaccharides) to support gut integrity and pathogen control.

  • Yeast-powered charm

  • Derived from yeast cell walls (mannan-oligosaccharides) to support gut integrity and pathogen control.

Increased Safety & Security

Time-Saving Convenience

Bio-Mos by Alltech is a globally recognized, research-backed mannan-oligosaccharide prebiotic that is often used alongside probiotic powders to enhance gut stability rather than as a live-culture product itself. As a market leader in prebiotic supplementation, Bio-Mos provides economies of scale and extensive trial data that make it financially and technically attractive for producers and performance yards, and it is commonly paired with live probiotics like Mad Barn or Omega Alpha to create a complementary gut-management program.

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$120-220 CAD

3
BEST PREBIOTIC PELLETS FOR HORSES

Tribute Equine Nutrition Essential K GC Plus

Tribute Equine Nutrition Essential K GC Plus

Tribute Essential K GC Plus is a specialist, nutritionist-developed option that targets gastric and hindgut balance with a curated mix of prebiotic ingredients, making it attractive for performance or clinical support plans. It is technically more tailored than generic pellets and often carries a premium price, but that higher cost reflects focused formulation and clinician-oriented design compared with broader-market products like Purina or budget fiber mixes such as Brooks.

4.3
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  • Gastric lining support — vet-loved

  • Low-starch balance — workout-safe

  • Gastric lining support — vet-loved

  • Low-starch balance — workout-safe

Review Summary

85%

"Customers generally see more stable hindgut function, improved coat and energy levels over time and find it palatable; a few users report slower improvement in chronic digestive issues."

  • Easy-mix pellets — toss-and-go

  • Provides prebiotic fibers alongside essential vitamins and minerals to support overall gut integrity.

  • Easy-mix pellets — toss-and-go

  • Provides prebiotic fibers alongside essential vitamins and minerals to support overall gut integrity.

Increased Safety & Security

Time-Saving Convenience

Tribute Essential K GC Plus is a specialist, nutritionist-developed option that targets gastric and hindgut balance with a curated mix of prebiotic ingredients, making it attractive for performance or clinical support plans. It is technically more tailored than generic pellets and often carries a premium price, but that higher cost reflects focused formulation and clinician-oriented design compared with broader-market products like Purina or budget fiber mixes such as Brooks.

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$80-150 CAD

4
BEST DIGESTIVE ENZYME SUPPLEMENTS FOR HORSES

Martin's ProBios Equine Enzymes

Martin's ProBios Equine Enzymes

Martin's ProBios Equine Enzymes combines shelf-stable live cultures with digestive enzymes in a portable, economical format that is popular for travel and competition stress management. Its practical advantage over bulk or herbal competitors is a strong probiotic-enzyme balance at a typically lower cost-per-dose, though it may lack some of the targeted gastric actives found in higher-priced therapeutic blends.

4.5
Show More Digestive Enzyme Supplements for Horses
  • Enzyme-probiotic synergy

  • Feed-stable formula

  • Enzyme-probiotic synergy

  • Feed-stable formula

Review Summary

90%

"Highly rated by long-term users for quick improvement in manure quality, appetite and overall gut health; consistency of results and easy dosing are commonly mentioned positives."

  • Barn-friendly aroma

  • Combines live probiotic cultures with digestive enzymes to promote a balanced hindgut microbiome and improved fiber digestion.

  • Barn-friendly aroma

  • Combines live probiotic cultures with digestive enzymes to promote a balanced hindgut microbiome and improved fiber digestion.

Increased Safety & Security

Time-Saving Convenience

Martin's ProBios Equine Enzymes combines shelf-stable live cultures with digestive enzymes in a portable, economical format that is popular for travel and competition stress management. Its practical advantage over bulk or herbal competitors is a strong probiotic-enzyme balance at a typically lower cost-per-dose, though it may lack some of the targeted gastric actives found in higher-priced therapeutic blends.

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$60-95 CAD

5
BEST GASTRIC ULCER SUPPORT FOR HORSES

Mad Barn Visceral+ Gastric Support

Mad Barn Visceral+ Gastric Support
🏠 Local Product

Mad Barn Visceral+ stands out as a market leader for its research-driven, multi-ingredient approach aimed at both gastric and microbiome health, backed by personalized feeding guidance and lab-based diagnostics. Though typically positioned at a higher price point than commodity supplements like Purina Outlast, its technical advantage is a targeted, science-focused formulation and individualized recommendations that can outperform one-size-fits-all options for horses with complex digestive profiles.

4.6
Show More Gastric Ulcer Support for Horses
  • Mucosal care — probiotic zing

  • Absorption boost — lab-smarts

  • Mucosal care — probiotic zing

  • Absorption boost — lab-smarts

Review Summary

90%

"Customers frequently report noticeable improvement in gastric comfort and appetite and appreciate the ingredient transparency; a few cite the price and occasional variable response between horses."

  • Feed-safe blend — unflavored wink

  • Concentrated formula aimed at supporting gastric mucosal health and overall digestive tract balance.

  • Feed-safe blend — unflavored wink

  • Concentrated formula aimed at supporting gastric mucosal health and overall digestive tract balance.

Increased Safety & Security

Time-Saving Convenience

Mad Barn Visceral+ stands out as a market leader for its research-driven, multi-ingredient approach aimed at both gastric and microbiome health, backed by personalized feeding guidance and lab-based diagnostics. Though typically positioned at a higher price point than commodity supplements like Purina Outlast, its technical advantage is a targeted, science-focused formulation and individualized recommendations that can outperform one-size-fits-all options for horses with complex digestive profiles.

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$80-140 CAD

6

Vetoquinol Zylkene Equine delivers a natural, non-sedating calming ingredient (alpha-casozepine) to reduce stress-related gastric upset during transport, training transitions or antibiotic recovery. It is recognized here for addressing the behavioral and stress component of digestive disturbance rather than directly repopulating gut flora, making it a technically complementary option to probiotic and buffering products on this list and often a cost-effective adjunct for horses whose issues are stress-driven. Used alongside microbiome-focused supplements, Zylkene helps minimize the stress triggers that can impede recovery.

3.9
Show More Transition and Antibiotic Recovery Digestive Support for Horses
  • Natural calming aid

  • Stress-reduction support

  • Natural calming aid

  • Stress-reduction support

Review Summary

74%

"Owners report modest but reliable calming effects during stressful events, with mixed results on long-term behavior; palatability and individual response vary. It's often recommended by vets for short-term stress management."

  • Calm-inducing — zen vibes

  • Contains a natural casein-derived peptide (alpha-casozepine) to reduce stress-related behaviours that can exacerbate digestive upset.

  • Calm-inducing — zen vibes

  • Contains a natural casein-derived peptide (alpha-casozepine) to reduce stress-related behaviours that can exacerbate digestive upset.

Increased Safety & Security

Time-Saving Convenience

Vetoquinol Zylkene Equine delivers a natural, non-sedating calming ingredient (alpha-casozepine) to reduce stress-related gastric upset during transport, training transitions or antibiotic recovery. It is recognized here for addressing the behavioral and stress component of digestive disturbance rather than directly repopulating gut flora, making it a technically complementary option to probiotic and buffering products on this list and often a cost-effective adjunct for horses whose issues are stress-driven. Used alongside microbiome-focused supplements, Zylkene helps minimize the stress triggers that can impede recovery.

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From 45.37$

What the Research Says About Equine Digestive Support

A growing body of veterinary research supports targeted use of prebiotics, probiotics, digestive enzymes and gastric support in horses. Studies and clinical reports indicate these interventions can help re-establish a healthy hindgut microbiota after dietary changes or antibiotics, improve fiber and starch digestion in some cases, and reduce clinical signs associated with digestive upset. Gastric support products that buffer stomach acid or form protective layers can reduce ulcer severity when used as part of a management plan. Importantly, outcomes depend on product selection, correct dosing, and combining supplements with good feeding and management practices recommended by a veterinarian.

Probiotics: Clinical trials and field studies show select live microbial strains can help restore normal hindgut populations after antibiotic use and reduce episodes of loose feces during dietary transitions.

Prebiotics: Non-digestible fibers such as inulin or fructooligosaccharides feed beneficial microbes and support more stable fermentation patterns in the hindgut.

Digestive enzymes: Supplemental enzymes can aid starch and fiber breakdown in horses with compromised digestion or during high-concentrate feeding, improving feed efficiency.

Gastric support: Buffering agents, alginate-based protectants and pH modulators have been shown to reduce ulcer scores in controlled studies when used with dietary and management changes.

Timing and combination matter: Research highlights better outcomes when probiotics and prebiotics are started early in a transition or concurrently with antibiotic therapy rather than waiting until symptoms escalate.

Safety and regulation: Studies emphasize strain-specific effects and the need for quality manufacturing; working with a veterinarian helps match products to the horse's clinical needs and avoid unnecessary overlap or interactions.

Whether you are managing a performance horse, bringing a pasture boarder through a feed change, or helping a horse recover from antibiotics, the top 6 digestive and probiotic supplements for horses in Canada for 2025 cover the main needs: hindgut stability, gas reduction, ulcer support and transition care. We hope this guide helped you identify the right direction. Use the search or filters to refine by purpose, veterinarian recommendations, ingredient type, or price to find the exact product that suits your horse and region in Canada.