Purina Outlast Gastric Support Supplement
Purina Outlast is positioned as a best-in-class gastric support supplement that helps horses maintain stable blood sugar response by buffering gastric acidity and supporting forage-based, low-NSC feeding programs. Its strengths are broad clinical backing, wide distribution and competitive pricing, making it an easy-to-adopt, cost-effective complement to low glycemic performance feeds compared with more specialized or research-heavy products on this list. Because it targets gastric comfort rather than replacing concentrates, it pairs well with low-starch rations like Masterfeeds ProElite or Brooks Fibre O'Plus to reduce metabolic and behavioral spike risks.
Buffers stomach pH — vet-approved
Slow-release energy — endurance buddy
Buffers stomach pH — vet-approved
Slow-release energy — endurance buddy
Review Summary
"Most users report a noticeable reduction in gastric discomfort and improved appetite with regular use, though some see only modest benefit and a few comment on the cost."
Palatable blend — pony-pleaser wink
Pelleted gastric supplement formulated to support stomach mucosa and reduce gastric stress.
Palatable blend — pony-pleaser wink
Pelleted gastric supplement formulated to support stomach mucosa and reduce gastric stress.
Enhanced Physical Well-Being
Time-Saving Convenience
Purina Outlast is positioned as a best-in-class gastric support supplement that helps horses maintain stable blood sugar response by buffering gastric acidity and supporting forage-based, low-NSC feeding programs. Its strengths are broad clinical backing, wide distribution and competitive pricing, making it an easy-to-adopt, cost-effective complement to low glycemic performance feeds compared with more specialized or research-heavy products on this list. Because it targets gastric comfort rather than replacing concentrates, it pairs well with low-starch rations like Masterfeeds ProElite or Brooks Fibre O'Plus to reduce metabolic and behavioral spike risks.
Buffers stomach pH — vet-approved
Slow-release energy — endurance buddy
Palatable blend — pony-pleaser wink
Pelleted gastric supplement formulated to support stomach mucosa and reduce gastric stress.
Includes buffering ingredients and easily digestible fibre to help manage acidity during training.
Buffers stomach pH — vet-approved
Slow-release energy — endurance buddy
Palatable blend — pony-pleaser wink
Pelleted gastric supplement formulated to support stomach mucosa and reduce gastric stress.
Includes buffering ingredients and easily digestible fibre to help manage acidity during training.
$80-140 USD
Mad Barn Visceral+
Mad Barn Visceral+ is a research-driven, metabolically focused supplement designed to optimize the visceral microbiome and support insulin-resistant or easy-keeper performance horses on low glycemic programs. Technically advanced and formulated from lab-backed ingredients, it often carries a premium price but offers targeted microbiome and metabolic benefits that go beyond general gastric buffering or simple fiber-based feeds. Compared with broader-feed solutions such as Brooks Fibre O'Plus or Masterfeeds ProElite, Visceral+ is ideal when specific metabolic modulation and diagnostic-informed feeding are priorities.
Supports hindgut microbiome — lab-smart
Improves fermentation balance — marathon-ready
Supports hindgut microbiome — lab-smart
Improves fermentation balance — marathon-ready
Review Summary
"Customers commonly note clearer digestion, firmer stools and improved overall gut comfort after consistent use; reviewers praise ingredient transparency but some cite a slow onset and premium price."
Low-glycemic formula — sugar-shy superstar
Broad-spectrum gut support formula targeting hindgut function with prebiotic components.
Low-glycemic formula — sugar-shy superstar
Broad-spectrum gut support formula targeting hindgut function with prebiotic components.
Enhanced Physical Well-Being
Skill Development & Mastery
Mad Barn Visceral+ is a research-driven, metabolically focused supplement designed to optimize the visceral microbiome and support insulin-resistant or easy-keeper performance horses on low glycemic programs. Technically advanced and formulated from lab-backed ingredients, it often carries a premium price but offers targeted microbiome and metabolic benefits that go beyond general gastric buffering or simple fiber-based feeds. Compared with broader-feed solutions such as Brooks Fibre O'Plus or Masterfeeds ProElite, Visceral+ is ideal when specific metabolic modulation and diagnostic-informed feeding are priorities.
Supports hindgut microbiome — lab-smart
Improves fermentation balance — marathon-ready
Low-glycemic formula — sugar-shy superstar
Broad-spectrum gut support formula targeting hindgut function with prebiotic components.
Formulated by equine nutritionists to complement low-starch, low-glycemic rations for performance horses.
Supports hindgut microbiome — lab-smart
Improves fermentation balance — marathon-ready
Low-glycemic formula — sugar-shy superstar
Broad-spectrum gut support formula targeting hindgut function with prebiotic components.
Formulated by equine nutritionists to complement low-starch, low-glycemic rations for performance horses.
$100-180 USD
Brooks Fibre O'Plus
Brooks Fibre O'Plus is a high-fiber, low-NSC feed engineered to provide steady, slow-release energy for performance horses without starch-induced glycemic spikes, making it a practical and economical foundation for low glycemic feeding programs. Its technical advantage is a carefully balanced blend of soluble and insoluble fibers that support hindgut fermentation and temperament stability while costing less than many specialty supplements and microbiome-targeted products. In comparison to concentrated supplements like Purina Outlast or Buckeye EQ8, Brooks offers a straightforward, feed-based approach for handlers seeking affordability and predictable low glycemic performance.
High fermentable fiber — gut-happy crunch
Low starch profile — calm competitor
High fermentable fiber — gut-happy crunch
Low starch profile — calm competitor
Review Summary
"Owners appreciate the low-starch, high-fiber formulation for easy keepers and metabolic horses, reporting good weight maintenance and condition, while a minority mention dust or palatability issues for picky eaters."
Consistent texture — nibble-friendly quirk
High-fibre, low-starch product designed to increase digestible fibre without raising glycemic load.
Consistent texture — nibble-friendly quirk
High-fibre, low-starch product designed to increase digestible fibre without raising glycemic load.
Enhanced Physical Well-Being
Time-Saving Convenience
Brooks Fibre O'Plus is a high-fiber, low-NSC feed engineered to provide steady, slow-release energy for performance horses without starch-induced glycemic spikes, making it a practical and economical foundation for low glycemic feeding programs. Its technical advantage is a carefully balanced blend of soluble and insoluble fibers that support hindgut fermentation and temperament stability while costing less than many specialty supplements and microbiome-targeted products. In comparison to concentrated supplements like Purina Outlast or Buckeye EQ8, Brooks offers a straightforward, feed-based approach for handlers seeking affordability and predictable low glycemic performance.
High fermentable fiber — gut-happy crunch
Low starch profile — calm competitor
Consistent texture — nibble-friendly quirk
High-fibre, low-starch product designed to increase digestible fibre without raising glycemic load.
Suitable as a top-dress or partial feed replacement to stabilise post-prandial glucose and insulin.
High fermentable fiber — gut-happy crunch
Low starch profile — calm competitor
Consistent texture — nibble-friendly quirk
High-fibre, low-starch product designed to increase digestible fibre without raising glycemic load.
Suitable as a top-dress or partial feed replacement to stabilise post-prandial glucose and insulin.
$60-120 USD
Masterfeeds ProElite Low Starch Performance
Masterfeeds ProElite Low Starch Performance is a low-starch performance concentrate that replaces starch with fat and fiber to deliver sustained energy for competition without driving blood glucose spikes. It provides a complete vitamin and mineral package at a price point that is competitive in markets where Masterfeeds is distributed, offering a practical alternative to stacking multiple supplements while still achieving performance energy goals. Versus microbiome-centric products such as EQ8 or Visceral+, ProElite emphasizes nutrient completeness and predictable on-track performance over targeted gut modulation.
Low-starch energy — competitive spark
High-quality protein — muscle-building wink
Low-starch energy — competitive spark
High-quality protein — muscle-building wink
Review Summary
"Riders value the consistent, low-starch energy for performance horses and report steadier behavior and condition, but several users note higher cost and occasional supply/availability issues."
Balanced electrolytes — sweat-proof charm
Complete performance feed formulated to deliver controlled energy from fibre and fat rather than starch.
Balanced electrolytes — sweat-proof charm
Complete performance feed formulated to deliver controlled energy from fibre and fat rather than starch.
Enhanced Physical Well-Being
Skill Development & Mastery
Time-Saving Convenience
Masterfeeds ProElite Low Starch Performance is a low-starch performance concentrate that replaces starch with fat and fiber to deliver sustained energy for competition without driving blood glucose spikes. It provides a complete vitamin and mineral package at a price point that is competitive in markets where Masterfeeds is distributed, offering a practical alternative to stacking multiple supplements while still achieving performance energy goals. Versus microbiome-centric products such as EQ8 or Visceral+, ProElite emphasizes nutrient completeness and predictable on-track performance over targeted gut modulation.
Low-starch energy — competitive spark
High-quality protein — muscle-building wink
Balanced electrolytes — sweat-proof charm
Complete performance feed formulated to deliver controlled energy from fibre and fat rather than starch.
Low-starch/low-glycemic formulation aimed at maintaining steady blood glucose in athletic horses.
Low-starch energy — competitive spark
High-quality protein — muscle-building wink
Balanced electrolytes — sweat-proof charm
Complete performance feed formulated to deliver controlled energy from fibre and fat rather than starch.
Low-starch/low-glycemic formulation aimed at maintaining steady blood glucose in athletic horses.
$70-130 USD
Buckeye Nutrition EQ8 Gut Health
Buckeye Nutrition EQ8 Gut Health is a market-leading gut-targeted product combining multi-strain probiotics, prebiotics and digestive enzymes to optimize hindgut fermentation and support low glycemic energy production from fiber. Its technical differentiation is a comprehensive microbiome-focused formulation intended to improve fiber digestion efficiency and metabolic stability, which can justify a higher upfront cost for programs prioritizing long-term digestive resilience. Compared with simpler fiber feeds or generic gastric buffers, EQ8 is best for trainers seeking an advanced, science-backed approach to gut health within a low glycemic feeding strategy.
Clinically formulated gut support — science-sassy
Reduces gastric acidity — calm-as-a-cloud
Clinically formulated gut support — science-sassy
Reduces gastric acidity — calm-as-a-cloud
Review Summary
"Highly rated for improving digestive health—many users report better manure quality, fewer gastric episodes and overall gut comfort; a few reviewers mention the price and that results can take weeks."
Targets hindgut balance — microbiome maestro
Targeted gut-health supplement combining probiotics and prebiotic components to support microbiome balance.
Targets hindgut balance — microbiome maestro
Targeted gut-health supplement combining probiotics and prebiotic components to support microbiome balance.
Enhanced Physical Well-Being
Time-Saving Convenience
Buckeye Nutrition EQ8 Gut Health is a market-leading gut-targeted product combining multi-strain probiotics, prebiotics and digestive enzymes to optimize hindgut fermentation and support low glycemic energy production from fiber. Its technical differentiation is a comprehensive microbiome-focused formulation intended to improve fiber digestion efficiency and metabolic stability, which can justify a higher upfront cost for programs prioritizing long-term digestive resilience. Compared with simpler fiber feeds or generic gastric buffers, EQ8 is best for trainers seeking an advanced, science-backed approach to gut health within a low glycemic feeding strategy.
Clinically formulated gut support — science-sassy
Reduces gastric acidity — calm-as-a-cloud
Targets hindgut balance — microbiome maestro
Targeted gut-health supplement combining probiotics and prebiotic components to support microbiome balance.
Designed to be compatible with low-NSC feeding plans to limit glycemic spikes in performance horses.
Clinically formulated gut support — science-sassy
Reduces gastric acidity — calm-as-a-cloud
Targets hindgut balance — microbiome maestro
Targeted gut-health supplement combining probiotics and prebiotic components to support microbiome balance.
Designed to be compatible with low-NSC feeding plans to limit glycemic spikes in performance horses.
$90-170 USD