What can you say about psyllium husk in your ads and on your site?

The library supports 3 wordings for psyllium husk; the strongest is “Promotes regular bowel movements by adding bulk and water to the stool” (moderate, 2.5-30 g husk a day). Avoid wording that names or implies a disease, a drug or a treatment, such as “Relieves or treats constipation, without ‘occasional’, or anything about chronic constipation”.

Also called: Psyllium, Psyllium seed husk, Blond psyllium, Indian psyllium, Plantago ovata

Reviewed 14 October 2026

Not legal advice. This guide shows the wording that published evidence supports at a daily dose, from the sources linked below; it is not a ruling on any claim. Your own product, its form and dose, and your own evidence still need to match the wording you use.

Supported wordings

What you can say.

Moderate evidenceWording 1

Claims Facts

“Promotes regular bowel movements by adding bulk and water to the stool.”

Daily dose	2.5-30 g husk a day
Support	Health Canada lists this use with doses drawn from European, WHO and FDA references; no other listed source covers it.
Dose details	Adults and adolescents 13-17: 2.5-30 g husk a day, no more than 8 g per dose (seed: 2.5-40 g, no more than 13 g per dose). Children 6-12: 1.25-15 g husk a day, no more than 4 g per dose. Drink at least 250 ml of liquid with each dose. Effects show 12-24 hours after the first dose and may take 2-3 days.
Form	Dry or powdered psyllium husk (or seed at the seed doses), mixed with liquid
Source	Health Canada monograph: Psyllium

Moderate evidenceWording 2

Claims Facts

“Helps relieve occasional constipation.”

Daily dose	2.5-30 g husk a day
Support	Health Canada lists constipation relief at these doses; FDA’s 2000 rule counts the ‘occasional’ form as structure-and-function wording.
Dose details	Same doses and directions as above. Labeling should make clear the product is not meant for chronic constipation.
Form	Dry or powdered psyllium husk (or seed at the seed doses), mixed with liquid
Source	Health Canada monograph: Psyllium

Moderate evidenceWording 3

Claims Facts

“Provides gentle relief from irregularity.”

Daily dose	2.5-30 g husk a day
Support	Health Canada lists it; no other listed source covers it.
Dose details	Same doses and directions as above. Health Canada words this use as gentle relief of ‘constipation and/or irregularity’; this entry keeps only the irregularity wording (see notes).
Form	Dry or powdered psyllium husk (or seed at the seed doses), mixed with liquid
Source	Health Canada monograph: Psyllium

How strong the evidence is

Strong evidence: At least two listed sources support it independently at a comparable dose and form, and none disagrees.
Moderate evidence: One listed source supports it as an evidence-based use at that dose, and no listed source disagrees.
Limited evidence: The only support is traditional use, the sources disagree, or the source itself calls the evidence weak.

Wordings to avoid

What to leave out.

Claims Facts

Ingredient: Psyllium husk

Wording to avoid	Reason
“Relieves or treats constipation, without ‘occasional’, or anything about chronic constipation”FDA’s 2000 rule clears only the ‘occasional constipation’ form; chronic constipation may be a symptom of serious disease.	Treatment
“Lowers cholesterol, or reduces heart disease risk, outside FDA’s authorized wording and conditions”Names a disease. The supported route is FDA’s authorized soluble-fiber claim, with its wording and conditions (see fda_health_claims).	Disease
“Controls blood sugar in diabetes”Names a disease. FDA lists a qualified claim on psyllium and type 2 diabetes risk, but its wording was not read (see fda_health_claims).	Disease
“Relieves IBS or hemorrhoids”Names diseases.	Disease

Disease: names or implies a disease. Drug: names a drug or presents the product as one. Treatment: promises to treat, cure or prevent a condition.

Sources

Where this comes from.

All ingredient guides

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