The barcode identity checks out · 810139575771.
The outside identifier points to this product, so the other checks are less likely to be about a look-alike.
Exact product checked · GTIN 810139575771Nutricost · observed 2026-07-23
The useful read · Nutricost
Nutricost Prebiotic Fiber Unflavored (1 Pound) Gluten…
The barcode identity checks out · 810139575771.
Rebuilt from public sources on July 23, 2026 · evidence availability is not a safety or effectiveness verdict.
Research links are available for prebiotic fiber.
Use the linked research to check whether the ingredient and outcome you care about are actually connected. Ingredient evidence does not verify this product.
Shopper scorecard
The useful findings, in decision order.
Only product facts and comparisons earn a card. Pipeline gaps stay collapsed.
Who is behind it?
Checks outBarcode / GTIN record
The barcode identity checks out · 810139575771.
Open Food Facts resolves 810139575771 to "Prebiotic Fiber" (nutricost) — consistent with this listing.
Why it mattersThe outside identifier points to this product, so the other checks are less likely to be about a look-alike.
Open the source-linked findingWill it do what you want?
Public contextNIH / published research
Research links are available for prebiotic fiber.
Published sources describe how prebiotic fiber have been studied. This is ingredient context only; the record does not establish that this product delivers the studied dose or outcome. Sources: NIH ODS — Fiber overview (MVMS context), PubMed search: inulin prebiotic randomized tr…
Why it mattersUse the linked research to check whether the ingredient and outcome you care about are actually connected. Ingredient evidence does not verify this product.
Open the source-linked findingWhat remains open 2
- Not yet in NIH's public label registry.
- No dated review-history series is on file yet.
These are evidence gaps, not strikes against the product.
Relevant research · quick links
Read the ingredient evidence directly
These links provide the public research context used alongside the captured panel. They do not establish safety, effectiveness, or product quality.
Want the complete evidence trail?
The summary stops at product-specific facts. The full report preserves every source, calculation, limitation, and unresolved check for review or sharing.
Open the full evidence trailSources, edge cases, and every unresolved check
Confirmed evidence
What checked out01
These checks found support in the public record. They confirm specific facts, not the product as a whole.
Barcode confirmed in an outside database
Open Food Facts resolves 810139575771 to "Prebiotic Fiber" (nutricost) — consistent with this listing.
Documented concerns
What needs caution00
These are documented contradictions or claims that need more evidence. They are separate from missing data.
No contradictions or product-specific cautions were found at this check depth.
Unresolved public record
What is still missing05
We looked for these signals but could not settle them from public sources. A gap is not a strike.
Review-count history: not available
Marketplace rating not shown★ — rating count unavailable. No exact-listing count history was available, so no review-pattern claim is made.
Listed amounts fit the serving
Technical check only: the panel’s 5 actives sum to 8,000 mg, which fits inside the ≈8,000 mg serving. This means the numbers are physically possible — it does not mean the formula was validated or the contents confirmed.
Photo-read pack math is internally consistent
57 servings × 8 g = 456 g, matching the printed net weight 454 g (NET WT. 16.2 OZ (1 LB) (454 G)). This checks agreement within the photo read; it is not an independent contents test.
Research context is available for the listed ingredients
Published sources describe how prebiotic fiber have been studied. This is ingredient context only; the record does not establish that this product delivers the studied dose or outcome. Sources: NIH ODS — Fiber overview (MVMS context), PubMed search: inulin prebiotic randomized trial.
No label filed with NIH's public catalog
The NIH Dietary Supplement Label Database has no matching label yet. Ingestion lags the market — recorded as a gap, not a strike.
What to ask and check
What would settle the open questions
Why is this shown?
Everything we couldn’t verify is something a person can still ask about. Rather than leave gaps sitting as dead ends, we turn each one into a specific question — the exact document, citation, or number that would settle it — plus the things you can confirm yourself with the bottle in your hand.
Ask the brand or seller
1
Is this label filed with NIH’s Dietary Supplement Label Database (DSLD)?
Filing is voluntary, so absence proves nothing — but a filed label puts the full ingredient table on public record where anyone can read it.
Most brands and sellers publish a contact route. A clear answer adds evidence to the record; no answer leaves the question open.
Check for yourself — no one’s permission needed
1
Compare the panel on the bottle in your hand to the one shown in this record.
Ours was read from listing photos and can contain reading errors. The physical label is the source of truth — if they disagree, tell us and we’ll correct the record.
2
Scan the barcode on the package and confirm it reads 810139575771.
A mismatch between the barcode on the box and the one on the listing is worth pausing over — it can indicate a different variant, a repack, or a counterfeit.
3
Check the lot number and expiry on the bottle against any COA you’re given.
A certificate that doesn’t name your lot doesn’t describe what you’re holding.
These are the open questions on this specific record — not a warning about the product, and not a suggestion to buy or avoid it. Getting them answered is how you decide for yourself.
Record built July 23, 2026. Sources: source listing observed at check time · USPTO Trademark Search · Keepa exact-listing history · NIH / published research · certification and regulator records where available. LookCloser publishes evidence and gaps; it does not advise for or against any supplement. Evidence-based corrections welcome.