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Top 5 Fiber Powder Supplements for Dogs in Canada — 2025 Vet-Reviewed Guide to Better Digestion, Stool Control, and Weight Management

Published on Thursday, August 21, 2025

Fiber powders are versatile, measured supplements that mix into food or water to adjust a dog's fiber intake precisely for constipation, diarrhea, or weight management. They combine soluble and insoluble blends to offer customizable dosing and easy administration, which appeals to Canadian pet owners who value control, predictability, and minimal waste. In Canada the category is popular because it suits ageing dogs with slower digestion, multi-dog households that need consistent dosing, and owners seeking non-prescription options to manage stool quality and anal gland issues. Consumers here also prefer formulas that are veterinarian-friendly, made with recognizable ingredients, easy to store in colder climates, and available through reliable Canadian retailers or cross-border suppliers with clear shipping and regulatory information.

Quick Menu

1. Best Anal-Gland Fiber

2. Best Broad-Spectrum Digestive

3. Best Stool-Firming Fiber

4. Best Value Enzymes + Probiotic

5. Best Coat & Fiber Support

1
BEST ANAL-GLAND FIBER

Glandex Anal Gland Fiber Supplement Powder

Glandex

Glandex is positioned as the specialist fiber powder for anal gland and stool-firming support, using psyllium and targeted botanicals to help produce firmer, healthier stools. It holds its spot as a market leader for owners whose primary concern is anal gland expression because its formulation is narrowly focused and clinically oriented, though that specialization typically commands a premium compared with more general digestive powders on this list.

4.4
★★★★☆

  • Firmer stools

  • Scoot reducer

  • Firmer stools

  • Scoot reducer

Review Summary

87%

"Users report Glandex reliably helps reduce scooting and anal gland issues when used consistently, with many noticing firmer stools within a few weeks. A minority mention it can be messy to mix and is on the pricier side."

  • Anal-gland whisper

  • Fiber-focused powder designed to help firm stools and support natural anal gland expression

  • Anal-gland whisper

  • Fiber-focused powder designed to help firm stools and support natural anal gland expression

Time-Saving Convenience

Increased Safety & Security

Glandex is positioned as the specialist fiber powder for anal gland and stool-firming support, using psyllium and targeted botanicals to help produce firmer, healthier stools. It holds its spot as a market leader for owners whose primary concern is anal gland expression because its formulation is narrowly focused and clinically oriented, though that specialization typically commands a premium compared with more general digestive powders on this list.

  • Firmer stools

  • Scoot reducer

  • Anal-gland whisper

  • Fiber-focused powder designed to help firm stools and support natural anal gland expression

  • Mixes easily into meals for daily use

  • Firmer stools

  • Scoot reducer

  • Anal-gland whisper

  • Fiber-focused powder designed to help firm stools and support natural anal gland expression

  • Mixes easily into meals for daily use

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$20-35 CAD

2
BEST BROAD-SPECTRUM DIGESTIVE

Wholistic Pet Organics Digest-All Plus

Wholistic Pet Organics Digest-All Plus

Digest-All Plus is a broad-spectrum digestive powder combining fiber, probiotics and enzymes to support overall gut health; its technical advantage is the multi-modal approach that addresses both digestion and stool quality. This product competes well on value for comprehensive maintenance—offering an all-in-one option that can be more cost-effective long-term than buying a separate anal-gland-specific formula like Glandex.

4.2
★★★★☆

  • Gentle fiber blend

  • Probiotic lift

  • Gentle fiber blend

  • Probiotic lift

Review Summary

83%

"Wholistic Pet Digest-All Plus is praised for improving digestion and reducing gas for many dogs, and reviewers like the natural ingredient profile. Some buyers note it is expensive and results can take several weeks to appear."

  • Tummy tango

  • Multi-action formula combining digestive enzymes, probiotics and dietary fiber to support overall gut health

  • Tummy tango

  • Multi-action formula combining digestive enzymes, probiotics and dietary fiber to support overall gut health

Time-Saving Convenience

Digest-All Plus is a broad-spectrum digestive powder combining fiber, probiotics and enzymes to support overall gut health; its technical advantage is the multi-modal approach that addresses both digestion and stool quality. This product competes well on value for comprehensive maintenance—offering an all-in-one option that can be more cost-effective long-term than buying a separate anal-gland-specific formula like Glandex.

  • Gentle fiber blend

  • Probiotic lift

  • Tummy tango

  • Multi-action formula combining digestive enzymes, probiotics and dietary fiber to support overall gut health

  • Aimed at reducing gas, loose stools and improving nutrient absorption

  • Gentle fiber blend

  • Probiotic lift

  • Tummy tango

  • Multi-action formula combining digestive enzymes, probiotics and dietary fiber to support overall gut health

  • Aimed at reducing gas, loose stools and improving nutrient absorption

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$30-45 CAD

3
BEST STOOL-FIRMING FIBER

Bernie's Perfect Poop Digestion Support

Bernie's Perfect Poop Digestion Support

Bernie's Perfect Poop focuses on natural ingredients (pumpkin, fiber and probiotics) to produce reliable stool consistency and digestive comfort, marketed with subscription and value-pack options that lower ongoing cost. It earns its place by balancing ingredient transparency and affordability, making it a strong mid-market choice for owners who want dependable fiber support without the higher price of specialized clinical blends.

4.3
★★★★☆

  • Perfect poop

  • Enzyme boost

  • Perfect poop

  • Enzyme boost

Review Summary

85%

"Bernie's Perfect Poop is frequently credited with producing more consistent, firmer stools and easing occasional digestive upsets; many owners report visible improvement after regular use. A few users say it didn’t help their pet or that the taste can be off-putting for picky eaters."

  • Tail-wagging wink

  • Formulated to improve stool quality and regularity using natural fiber sources

  • Tail-wagging wink

  • Formulated to improve stool quality and regularity using natural fiber sources

Time-Saving Convenience

Increased Safety & Security

Bernie's Perfect Poop focuses on natural ingredients (pumpkin, fiber and probiotics) to produce reliable stool consistency and digestive comfort, marketed with subscription and value-pack options that lower ongoing cost. It earns its place by balancing ingredient transparency and affordability, making it a strong mid-market choice for owners who want dependable fiber support without the higher price of specialized clinical blends.

  • Perfect poop

  • Enzyme boost

  • Tail-wagging wink

  • Formulated to improve stool quality and regularity using natural fiber sources

  • Includes gut-supporting ingredients to promote healthy digestion

  • Perfect poop

  • Enzyme boost

  • Tail-wagging wink

  • Formulated to improve stool quality and regularity using natural fiber sources

  • Includes gut-supporting ingredients to promote healthy digestion

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$20-35 CAD

4
BEST VALUE ENZYMES + PROBIOTIC

Naturvet Digestive Enzymes Plus Probiotic Powder

NaturVet

Naturvet offers a widely distributed, budget-friendly powder that emphasizes digestive enzymes alongside probiotics to aid nutrient breakdown as well as stool quality. Its technical strength is the enzyme-rich profile useful for pets with food-digestion issues, and as a mass-market brand it often undercuts boutique formulas on price while still delivering measurable digestive support compared to purer fiber-only options.

4
★★★★☆

  • Gas reducer

  • Enzyme + probiotic

  • Gas reducer

  • Enzyme + probiotic

Review Summary

78%

"Naturvet Digestive Enzymes Plus Probiotic Powder gets favorable marks for reducing GI upset and improving stool quality for a majority of dogs, and it’s noted as an affordable option. Some reviewers see limited benefit for chronic issues and report mixed results."

  • Road-trip winner

  • Combines digestive enzymes with probiotics to aid digestion and support healthy stool formation

  • Road-trip winner

  • Combines digestive enzymes with probiotics to aid digestion and support healthy stool formation

Time-Saving Convenience

Naturvet offers a widely distributed, budget-friendly powder that emphasizes digestive enzymes alongside probiotics to aid nutrient breakdown as well as stool quality. Its technical strength is the enzyme-rich profile useful for pets with food-digestion issues, and as a mass-market brand it often undercuts boutique formulas on price while still delivering measurable digestive support compared to purer fiber-only options.

  • Gas reducer

  • Enzyme + probiotic

  • Road-trip winner

  • Combines digestive enzymes with probiotics to aid digestion and support healthy stool formation

  • Powder form that blends into food for easy administration

  • Gas reducer

  • Enzyme + probiotic

  • Road-trip winner

  • Combines digestive enzymes with probiotics to aid digestion and support healthy stool formation

  • Powder form that blends into food for easy administration

Order Now
-31%34.31$
Suggested Price: 49.49$
5
BEST COAT & FIBER SUPPORT

Vet's Best Healthy Coat Shed & Itch Relief Powder

Vet's Best Healthy Coat Shed & Itch Relief Powder

Vet's Best Healthy Coat powder is a multi-purpose formula that targets skin and coat health while supplying light fiber support to improve stool quality through the gut–skin axis. It stands out for owners seeking dual benefits (reduced shedding/itching plus some fiber), offering a budget-friendly, multi-use alternative to single-purpose fiber powders—though it is generally less concentrated in fiber than dedicated stool-firming products like Glandex.

3.8
★★★☆☆

  • Itch relief

  • Shedding control

  • Itch relief

  • Shedding control

Review Summary

75%

"Vet's Best Healthy Coat Shed & Itch Relief Powder is liked by many owners for helping reduce shedding and mild itchiness while improving coat condition. However, a notable share report little effect on severe allergies and some dogs dislike the taste or texture."

  • Fur-fashion boost

  • Targets skin and coat health while including fiber-rich ingredients to assist digestion

  • Fur-fashion boost

  • Targets skin and coat health while including fiber-rich ingredients to assist digestion

Increased Safety & Security

Vet's Best Healthy Coat powder is a multi-purpose formula that targets skin and coat health while supplying light fiber support to improve stool quality through the gut–skin axis. It stands out for owners seeking dual benefits (reduced shedding/itching plus some fiber), offering a budget-friendly, multi-use alternative to single-purpose fiber powders—though it is generally less concentrated in fiber than dedicated stool-firming products like Glandex.

  • Itch relief

  • Shedding control

  • Fur-fashion boost

  • Targets skin and coat health while including fiber-rich ingredients to assist digestion

  • Helps reduce shedding and soothe itchiness with nutrient support

  • Itch relief

  • Shedding control

  • Fur-fashion boost

  • Targets skin and coat health while including fiber-rich ingredients to assist digestion

  • Helps reduce shedding and soothe itchiness with nutrient support

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$15-30 CAD

What the Research Says About Fiber and Digestive Support

Scientific studies and veterinary reviews show that dietary fiber can improve stool quality, ease constipation, and support healthy gut function when used appropriately. Research distinguishes soluble fiber (which softens stool and feeds beneficial bacteria) from insoluble fiber (which adds bulk and speeds transit). Clinical trials and veterinary case series support psyllium and certain prebiotic fibers for regulating stool consistency, while combinations of enzymes and probiotics can reduce episodes of loose stool in dogs with functional digestive upset. Evidence also indicates that increased dietary fiber contributes to satiety, which can help with weight management when paired with calorie control. As with any supplement, benefit depends on correct dosing for the dog's size, condition, and concurrent diet, and should be overseen by a veterinarian.

Psyllium-based soluble fiber has been shown in veterinary studies to improve stool consistency in dogs with chronic constipation and some diarrheal conditions.

Moderate-use insoluble fibers (like beet pulp) can add bulk and normalize transit time, reducing both constipation and loose stools in different contexts.

Prebiotic fibers feed beneficial gut bacteria; multiple trials suggest prebiotics can shift microbiome composition toward health-associated strains and support stool quality.

Probiotic and enzyme combinations may shorten the duration and severity of acute digestive upsets compared with no supplementation, according to randomized and controlled trials in companion animals.

Fiber increases gastric fill and promotes a sense of fullness; clinical trials in dogs show fiber can be an effective component of multi-modal weight-management plans.

Safety notes from veterinary literature emphasize gradual introduction, correct dosing by weight, attention to hydration, and veterinary consultation for dogs with constipation due to obstruction, certain metabolic diseases, or on specific medications.

In Canada, fiber powders give pet owners a flexible, measurable way to manage bowel regularity and digestive comfort. The five products profiled on this page — Glandex Anal Gland Fiber Supplement Powder, Wholistic Pet Organics Digest-All Plus, Bernie's Perfect Poop Digestion Support, Naturvet Digestive Enzymes Plus Probiotic Powder, and Vet's Best Healthy Coat Shed & Itch Relief Powder — each target overlapping digestive needs with different ingredient mixes and use cases. For most owners seeking broad, all-purpose digestive support that balances fiber, enzymes, and probiotics, Wholistic Pet Organics Digest-All Plus stands out as the best single choice on this list due to its balanced formulation and veterinarian-friendly profile. If you were looking for anal gland-focused fiber, consider Glandex; for targeted stool quality and odor control, Bernie's is a good match; Naturvet is a reliable enzyme-plus-probiotic option; and Vet's Best can help dogs with skin-related shedding issues where digestion plays a supporting role. We hope you found what you were looking for; refine or expand your search using the site search to compare ingredients, dosing, price, or to find veterinarian-vetted reviews and Canadian retailers.

Discover More
  • Soluble Fiber Supplements for Dogs
  • Insoluble Fiber Supplements for Dogs
  • Natural Food-Based Fiber Supplements for Dogs
  • Fiber Chews for Dogs
  • Fiber Capsules and Tablets for Dogs

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