How we evaluated these products
We reviewed fibre supplements available on Amazon.ca based on four criteria:
Evidence. Does peer-reviewed research support the fibre type for the claimed benefit? We prioritised fibres backed by systematic reviews and meta-analyses.
Dosing transparency. Does the product clearly state the fibre content per serving, and does that serving align with doses used in clinical research?
Ingredient purity. We favoured products with minimal additives. A fibre supplement should contain fibre, not sweeteners, fillers, or proprietary blends.
Value. We calculated cost per effective daily dose in CAD, not cost per gram. A cheap powder that requires 20g to hit the research threshold is not cheaper than a premium product that works at 12g.
We include affiliate links to Amazon.ca. These earn us a small commission at no extra cost to you. Our editorial choices are independent of these links. Full disclosure at /disclosure.
What is the Canadian fibre gap?
Health Canada recommends 25g of fibre per day for women and 38g for men.1 The Canadian Community Health Survey consistently finds average intake well below these targets: approximately 14g for women and 18g for men.
This is broadly consistent with the European fibre gap, though Canada’s recommended intake for men is higher than the EFSA recommendation of 25g.
For Canadians taking GLP-1 medications, the gap is compounding. Wegovy (semaglutide) was approved by Health Canada for chronic weight management. Mounjaro (tirzepatide) is also approved. Most provinces do not cover these medications under public drug plans, meaning patients pay out of pocket. But the physiological effects are the same: reduced appetite, lower food volume, and GLP-1-related constipation in 5-24% of users.
Canadian regulatory note: Fibre supplements sold in Canada are classified as Natural Health Products (NHPs) and require a Natural Product Number (NPN). Health Canada regulates claims more strictly than some markets. The terms “source of fibre” (2g+), “high source of fibre” (4g+), and “very high source of fibre” (6g+) have specific regulatory definitions.
What are the main fibre types in Canadian supplements?
Psyllium husk (ispaghula) is a gel-forming soluble fibre that absorbs water and adds bulk to stool. The most widely recommended fibre by Canadian pharmacists and dietitians. Strong evidence for regularity and LDL cholesterol reduction.2
Chicory inulin is a soluble prebiotic fibre fermented by gut bacteria. The only fibre with a proprietary EFSA Article 13.5 health claim for bowel function at 12g/day.3 High-FODMAP. Start slowly.
PHGG (partially hydrolysed guar gum) is a low-viscosity soluble fibre. Dissolves completely, tasteless, minimal gas. The gentlest option for sensitive digestion or GLP-1 users with nausea.4
Acacia fibre is a slowly fermented soluble fibre. Lower gas production than inulin. Promising research on microbiome support.
For a detailed comparison of the two most popular types, see our chicory inulin vs. psyllium husk guide.
What are the 6 best fibre supplements available in Canada?
1. Metamucil 4-in-1 Psyllium Fibre (Sugar-Free Orange, 114 Servings)
Fibre type: Psyllium husk Fibre per serving: 3.4g fibre (2.4g soluble fibre) per dose Price: ~CAD $30-38 for 114 servings Cost per day at 2 servings: ~CAD $0.53-0.67
The most trusted fibre brand in Canadian pharmacies. Metamucil is widely available at Shoppers Drug Mart, Costco, and Amazon.ca. The sugar-free orange version contains aspartame. A Premium Blend with stevia is also available. Multiple sizes: 48, 72, 114, and 180 servings.
Metamucil is the fibre supplement most Canadian family doctors are familiar with. If your healthcare provider recommends “a fibre supplement,” this is likely what they have in mind.
2. Webber Naturals The Right Fibre4 (150g)
Fibre type: PHGG (Sunfiber, partially hydrolysed guar gum) Fibre per serving: 5g fibre per 5g serving Price: ~CAD $27 for 150g (30 servings) Cost per day: ~CAD $0.90
Webber Naturals is one of Canada’s most recognized supplement brands, headquartered in British Columbia. Their Fibre4 product uses Sunfiber (PHGG), a low-FODMAP certified soluble fibre that dissolves completely and is tasteless. Available at Walmart, Costco, and Amazon.ca. Also available as tablets (150 count) and a 250g Costco size.
PHGG is the gentlest fibre type for people with sensitive digestion, IBS, or GLP-1 users with nausea. It produces significantly less gas than inulin or psyllium. If you are starting a GLP-1 medication and want a Canadian-made fibre supplement, this is an excellent first choice.
3. Genuine Health Fermented Gut Superfoods+ (229g)
Fibre type: Prebiotic fibre blend (acacia gum, oat fibre, apple fibre) Fibre per serving: 6g fibre per serving Price: ~CAD $54 for 229g (21 servings) Cost per day: ~CAD $2.57
A Canadian brand based in Toronto. Genuine Health’s fermented gut superfoods+ combines prebiotic fibres from acacia gum, oat fibre, and apple fibre with fermented whole foods. USDA Organic, vegan, gluten-free. The fermentation process is designed to enhance bioavailability and reduce digestive discomfort from raw prebiotic fibres.
The premium price reflects the Canadian-made formulation and the fermentation process. If you want a locally produced prebiotic blend with a broader ingredient profile, this is a Canadian option. If you want the most fibre per dollar, single-ingredient powders are more cost-effective.
4. NOW Foods Psyllium Husk Powder (340g)
Fibre type: Psyllium husk Fibre per serving: 6g soluble fibre per tablespoon (7g serving) Price: ~CAD $19 for 340g Cost per day at 1 tablespoon: ~CAD $0.56
NOW Foods products are widely available on Amazon.ca. This is pure psyllium husk powder, Non-GMO Project Verified, with no additives. Also available in organic (B00PUX5DP4) and capsule formats (B003FG88QO). Best value per gram of fibre on this list.
Take with at least 250ml of water. Psyllium thickens rapidly, so mix quickly and drink immediately.
5. Organika Belli-Bliss Complete Fibre (450g)
Fibre type: Multi-source fibre blend (4 fibre sources) Fibre per serving: 13g fibre per serving Price: ~CAD $35-40 for 450g Cost per day: ~CAD $1.17-1.33
Organika is a Canadian supplement company based in Richmond, BC. Their Belli-Bliss Complete Fibre is their dedicated fibre product, combining 4 fibre sources to provide 13g per serving. Available in Lemon Lime, Raspberry, and Unflavoured. Also available in a 700g Costco size.
At 13g per serving, this is the highest fibre density of any product on this list. A single serving closes most of the daily fibre gap for the average Canadian. The multi-source approach provides diverse fibre types, though the blend format means you cannot isolate individual fibres if side effects occur.
6. CELEX Inulin Powder (800g, Made in Canada)
Fibre type: Chicory inulin Fibre per serving: ~5g per 5g serving Price: ~CAD $27-33 for 800g (160 servings) Cost per day at 12g dose: ~CAD $0.40-0.49
A Canadian-made chicory root inulin powder. Non-GMO, gluten-free, vegan. At 800g per bag, this offers good value for Canadians who want a pure inulin supplement without importing from the US or Europe.
At 12g/day (roughly 2.5 servings), chicory inulin reaches the dose needed for the EFSA health claim for bowel function.3 Start at 4g/day and ramp up over 2 weeks. Chicory inulin is high-FODMAP and will cause gas and bloating if you increase too quickly.
How do these products compare?
| Product | Fibre type | Fibre/serving | Cost/day (CAD) | Best for |
|---|---|---|---|---|
| Metamucil SF Orange | Psyllium husk | 3.4g (2.4g soluble) | ~$0.53 | Brand trust, pharmacy standard |
| Webber Naturals Fibre4 | PHGG (Sunfiber) | 5g | ~$0.90 | Canadian brand, gentle, low-FODMAP |
| Genuine Health | Prebiotic blend | 6g | ~$2.57 | Canadian-made prebiotic blend |
| NOW Foods Psyllium | Psyllium husk | 6g | ~$0.56 | Best value per gram |
| Organika Belli-Bliss | Multi-source blend | 13g | ~$1.17 | Highest fibre per serving |
| CELEX Inulin 800g | Chicory inulin | 5g | ~$0.40 | Prebiotic support, Canadian-made |
How to choose the right fibre supplement in Canada
If you want the safest, most studied option: Start with psyllium husk. Metamucil or NOW Foods Psyllium Husk Powder. This is what Canadian dietitians recommend first.
If you are on a GLP-1 medication: Start with Webber Naturals Fibre4 (PHGG/Sunfiber). It is the gentlest option for nausea-prone GLP-1 users, low-FODMAP certified, and Canadian-made. Avoid high-dose inulin in the first weeks.
If you are on a budget: NOW Foods Psyllium Husk Powder (~CAD $19) or CELEX Inulin offer the lowest cost per effective dose.
If you want a Canadian-made product: Webber Naturals, Genuine Health, Organika, and CELEX are all Canadian companies.
Which fibre should you choose?
If your main concern is constipation relief, start with psyllium husk powder. It has the most clinical evidence for improving stool frequency and consistency. Take with at least 250ml of water per serving. Browse psyllium husk powder on Amazon.ca
If you are starting a GLP-1 medication (Ozempic, Wegovy, Mounjaro), consider PHGG (partially hydrolysed guar gum) or Sunfiber first. PHGG is the gentlest fibre for GLP-1 users because it produces minimal gas, dissolves completely, and is low-FODMAP certified. Avoid jumping straight to high-dose inulin in the first weeks. Browse PHGG / Sunfiber on Amazon.ca
If you want prebiotic and microbiome support, look for chicory inulin powder. At 12g/day it carries the only proprietary EU health claim for bowel function. Start at 4g/day and ramp up over 2 weeks to avoid gas and bloating. Browse chicory inulin powder on Amazon.ca
If you have IBS or FODMAP sensitivity, start with PHGG or acacia fibre. Both are slow-fermenting, low-FODMAP, and produce significantly less gas than inulin or psyllium. Browse acacia fibre on Amazon.ca
If you already know your tolerance and want broader microbiome coverage, look for a fibre blend that combines two or more soluble fibres. Trade-off: if side effects occur, you cannot isolate which fibre is responsible. Browse prebiotic fibre blends on Amazon.ca
Frequently asked questions
What is the best fibre supplement in Canada?
It depends on your goal. Metamucil (psyllium husk) is the most widely recommended by Canadian healthcare professionals for regularity. Chicory inulin has the strongest prebiotic evidence. PHGG is the gentlest option for sensitive digestion. For most Canadians, a quality psyllium product like Metamucil is a solid starting point.
Can you take fibre with Ozempic in Canada?
Yes. Take fibre supplements at least 1 hour before or 2 hours after your GLP-1 injection. For oral semaglutide (Rybelsus), the 30-minute fasting period means fibre must be taken at a separate meal. Wegovy and Mounjaro are both approved by Health Canada.
How much fibre do Canadians need per day?
Health Canada recommends 25g per day for women and 38g for men. Most Canadian adults consume 14-18g from food. A supplement providing 10-15g per day can close most of the gap.
Is chicory inulin available in Canada?
Yes. Several chicory inulin products are available on Amazon.ca. Bulk inulin powder is widely available from brands like NOW Foods and others. Look for products listing chicory root inulin as the sole ingredient.
Are fibre supplements covered by provincial health plans?
Generally no. Fibre supplements are classified as natural health products (NHPs) in Canada and are not covered by most provincial drug plans. Some private insurance plans may cover NHPs with a valid NPN (Natural Product Number).
Looking for fibre supplements in another market? See our guides for the US, UK, Australia, Netherlands, or Nordics.
* Affiliate link. See our disclosure for details.
This article is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before starting, stopping, or changing any medication or supplement regimen.
Last reviewed: April 7, 2026. Prices and availability are approximate and may change.
Footnotes
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Health Canada (2010). Dietary Reference Intakes Tables: Recommended Dietary Allowances for Fibre. ↩
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Wei ZH, Wang H, Chen XY, et al. (2009). Time- and dose-dependent effect of psyllium on serum lipids. European Journal of Clinical Nutrition, 63(7):821-827. ↩
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EFSA Panel on Dietetic Products, Nutrition and Allergies (2015). Scientific Opinion on the substantiation of a health claim related to “native chicory inulin” and maintenance of normal defecation by increasing stool frequency. EFSA Journal, 13(1):3951. ↩ ↩2
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Giannini EG, Mansi C, Dulbecco P, Savarino V (2006). Role of partially hydrolyzed guar gum in the treatment of irritable bowel syndrome. Nutrition, 22(3):334-342. ↩