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Verified by IngredientMD/NOW Foods/Psyllium Husk Caps 500mg
VERIFIED BYingredientMD

Psyllium Husk Caps 500mg.

Strong for its nicheNOW Foods, verified Oct 2026Formula verified. Independently reviewed.Independent review. Not commissioned by NOW Foods.

Psyllium Husk is the lead active here, studied most for healthy glucose metabolism. 10 human studies on Psyllium Husk back this formula, each one cited. Who it fits: for everyone, adults.

Full label disclosure
1Active ingredientWell studiedResearch base10Human studies
Psyllium Husk Caps 500mgVerified by IngredientMD
NOW FoodsIngredientMD
The verdict
Strong for its niche
For everyone, adults.
How we verify

The brand submits the formula. We read the supplement facts panel and weigh dose, form and synergy against the clinical evidence. Labs test. IngredientMD verifies. The fee pays for review time, never for the outcome.

The formula
Psyllium Husk: Healthy glucose metabolismKey driver

How we read this product

Source: Supplement facts
Supplement Facts panel for Psyllium Husk Caps 500mg
  1. 01
    We read the label.

    The panel on the left is the one we evaluated, line by line.

  2. 02
    Every active, separately.

    All 1 actives checked against the clinical evidence: dose, form, and what the research actually shows.

  3. 03
    Then the formula as a whole.

    Doses, ratios, and how the ingredients work together. That assessment is the verdict above: "Strong for its niche".

  4. 04
    Earned, not bought.

    The verdict is public and identical whether or not a brand pays. A formula that does not clear the bar gets nothing.

Read by the engine against 2.1 million data points from clinical trials, PubMed and more than a hundred vetted sources. No individual reviewer is named or implied.

The receipts

Well studied
Research base
10
Human studies
1500 mg
Psyllium Husk

Cross-checked against 13 documented interactions for these actives.

Read the evidencePsyllium Husk, the evidence →

Inside the formula

Psyllium Husk
10 studies
Healthy glucose metabolism
Key driver
What this formula earned

Every one of these is a fact the engine could ground.

Each line below was derived from this formula's own record at the time of verification. Nothing here was written by the brand, and nothing can be added that the evidence does not carry.

  • Studied in people10 human studies on Psyllium Husk back this formula, each one cited.
  • A mechanism that is settledHow Psyllium Husk works is settled pharmacology.
  • Recent work on the recordThe most recent study on this record was published in 2021.
  • Why this formatIt is a capsule, so the amount per serving is fixed and travels without measuring.
  • The exact form, describedThe form on the label is Psyllium husk. The record says what that form is and what it suits.
  • Full label disclosureEvery ingredient on this label carries its own declared amount.
  • Where it comes from and how it is madePsyllium Husk is made by botanical.
  • Positions this formula already qualifies forThis formula already qualifies for positions beyond the one it is sold into, on the evidence it carries.
  • A position nobody is holding yetSome of those positions are ones almost nobody is selling to yet.
What the trials show

What the trials show about timing.

Time-to-effect windows the engine read from the trial record. Each is a window a named study measured, cited and dated, never written by the brand.

  • Psyllium Huskby the third and fourth week of daily useBuilds with daily use

    In a partially randomised comparative-effectiveness trial in 79 adults with chronic constipation, 12 g per day of psyllium raised the weekly rate of complete spontaneous bowel movements significantly when treatment weeks three and four were compared with baseline, and straining improved. The primary responder endpoint did not separate psyllium from the two comparators. A separate four-week randomised trial in 172 constipated adults found 3.5 g per day of psyllium raised bowel movement frequency by 2.9 movements, which was not different from the 3.7 seen on placebo.

    Chey et al., 2021PMID 34074830
    Cheng et al., 2019PMID 31117218
    Promising
  • Psyllium Huskabout seven days of daily useBuilds with daily use

    In two randomised, placebo-controlled, double-blinded trials, seven days of psyllium against maltodextrin in 8 healthy volunteers and 16 constipated patients raised stool water content and shifted faecal microbiota composition, with the larger shift in the constipated group and increases in three butyrate-producing genera correlating with the rise in faecal water. Stool water and microbiota were the measurements. Symptoms were not the endpoint.

    Early

Windows measured in the cited trials. Context for how the active behaves over time, not a statement about any individual and not a claim about this product.

General timing

How each ingredient usually behaves over time.

One ingredient, from its own page.

How each ingredient usually behaves over time, from its own page on IngredientMD. General timing for the ingredient, not a measurement of this product.

Chemical form

The same ingredient, carried differently.

What each form is, and where it fits in a formula. Measured findings carry the study that reported them.

  • Psyllium husk

    Intact husk flakes separated from the seed by mechanical milling and sieving, high in intact arabinoxylan structure.

    Fits
    Stirred drinks where a coarse texture is acceptable and maximum water-holding per gram is wanted.
    Trade-off
    Gritty texture and it thickens quickly in liquid, so it has to be drunk without delay.

Descriptions of the form itself, read from the cited studies. Not a comparison between products and not a statement about any individual.

Format

Capsule

It is a capsule, so the amount per serving is fixed and travels without measuring.

Best forMost standard doses, and anywhere a short, clean label is the point.

Questions shoppers ask

Is Psyllium Husk Caps 500mg independently verified?
Yes. IngredientMD reviewed this formula independently and verified it in Oct 2026. The verdict is earned, not bought: brands can't edit or purchase it.
What's in Psyllium Husk Caps 500mg?
Psyllium Husk Caps 500mg is built on Psyllium Husk. Each ingredient links to its own evidence page on IngredientMD.
Were ingredient interactions checked?
Yes. The combination was screened against 13 documented interactions for these actives in IngredientMD's interaction database.
Who is IngredientMD?
IngredientMD is an independent supplement-science platform. We analyze ingredients and formulas against clinical research, and we verify products only when they clear our bar. Labs run the tests. We review the results.
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These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This record is not medical advice. Always consult your healthcare provider before starting any supplement regimen.

Independent review by IngredientMD, not commissioned by NOW FoodsWork at NOW Foods? This verification is yours to claim →