Full record · lc-1385e318 · back to the summary
THORNE - FiberMend - Prebiotic Fiber Powder to Help Maintain Regularity and Balanced GI …
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How to read this report
What this is. We compare what a listing claims against what public records show — label arithmetic, barcode registries, NIH’s label catalog, FDA enforcement data, certification registries, and published research. Every statement below traces to one of those.
What the states mean. Confirmed = an outside source agrees. Contradicted = an outside source disagrees. Caution = something needs explaining. No data = we looked and found nothing — a gap, not a strike.
What it is not. A clean record is not an endorsement and never proof a product works. A thin record is not an accusation. We publish evidence and gaps; the conclusion is yours. Nothing here is medical advice.
Something wrong? Every figure is meant to be checkable — sources are named and linked. Send a correction and we’ll fix the record.
What the label discloses
The listing-image panel publishes an amount for each of its 10 declared rows. That supports ingredient-by-ingredient review; it does not verify the contents.
| Panel row | Amount | %DV | What to notice |
|---|---|---|---|
| Calories | 45 | — | |
| Total Fat | 1 g | — | |
| Total Carbohydrate | 9 g | — | |
| Dietary Fiber | 7 g | — | |
| Soluble Fiber | 6 g | — | |
| Partially Hydrolyzed Guar Gum | 8 g | — | |
| Rice Bran | 2.5 g | — | |
| Arabinogalactan (from Larch) (Larix spp.) | 300 mg | — | |
| Pectin (from Apple) | 150 mg | — | |
| Green Tea Phytosome | 50 mg | — |
FDA rules (21 CFR 101.36) require the amount of each dietary ingredient per serving unless hidden in a declared “proprietary blend” (legal, but a transparency yellow flag). A label stating no amount at all is non-compliant — a checkable red flag. This panel states amounts; the open question is whether those declared amounts are independently verified and how they compare with relevant research.
vision:google/gemini-flash-1.5 Amounts are shown as declared panel data, not independently lab-tested contents.
Every check we ran
Each ingredient’s amount is disclosed
The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.
No data yet: Panel arithmetic needs confirmation
The listing-image panel produced 17,000 mg across 6 actives for an ≈11,000 mg serving. That cannot be reconciled; the physical label or another exact filed document must settle it.
No data yet: Testing claimed — documentation not found
The listing claims third-party testing without naming any lab or certifier, so the claim can't be verified as stated.
No data yet: 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.
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.
Photo-read pack math is internally consistent
30 servings × 11 g = 330 g, matching the printed net weight 330 g (NET WT 11.6 OZ (330 G)). This checks agreement within the photo read; it is not an independent contents test.
Brand holds NSF/ANSI 173 certification (brand-level)
Thorne® appears in NSF’s certified-products registry with 10 certified product(s), but we couldn’t confirm this exact listing is among them. Closest listed product: “Thorne® L-Glutamine Powder”. Certification covers contents and contaminants — not effectiveness.
What the listing promises — claim by claim
Why is this shown?
| Claim | Status | What we found |
|---|---|---|
| Quality-testing claim “…ty Contents Certified: This product has been third-party tested and certified to verify what's in the packag…” | Claimed, not verifiable We looked for: a named laboratory, a certificate of analysis, or a certification-registry entry | No named laboratory, no certificate of analysis, and no certification-registry entry matching this product was located. |
| Benefit claim “…6 Oz Prebiotic: Fiber formula Healthy Bowel: Promotes regularity* Well-Tolerated: No bloating, cra…” | Partly supported We looked for: whether the ingredient doses on the label match the doses used in published research | Published research exists for ingredients in this formula — see Related research below. Whether this product’s doses match those studies could not be confirmed. |
“No evidence located” does not mean a claim is false — it means the seller has not put evidence proportionate to the claim on the public record, and we could not find any. Absence of proof is not proof of absence.
This label vs. the doses studied
Why is this shown?
| Ingredient | Where this label sits | Reading |
|---|---|---|
| Dietary Fiber | shaded = doses used in studies (3 g–10 g) · bar = this label | 7 g — within the studied range |
Matching a studied dose does not mean the product works, and missing it does not mean it fails — it shows whether the label and the research are talking about the same amounts. Not a recommendation to take any amount.
Verifiability profile — 1 of 6 public signals
What this listing gives the public to check. Publishing these signals doesn't prove quality — but withholding them means claims can only be taken on faith.
Identity
| LookCloser record ID | lc-1385e318 (internal — no barcode published, which limits cross-checking) |
| Brand | THORNE |
| Source listing identifier | B00BGJ7EBC |
| Retailer listing title | THORNE - FiberMend - Prebiotic Fiber Powder to Help Maintain Regularit… show full titleTHORNE - FiberMend - Prebiotic Fiber Powder to Help Maintain Regularity and Balanced GI Flora* - 11.6 Oz |
From the label (photo-read)
| Serving size | One Scoop (11 g) |
| Servings per container | 30 |
| Net weight | NET WT 11.6 OZ (330 G) |
| Badges printed on pack | Third-Party Certified |
Supplement Facts panel (photo-read):
| Ingredient | Amount per serving | Reading confidence |
|---|---|---|
| Calories | 45 | High clearly legible in the photo |
| Total Fat | 1 g | High clearly legible in the photo |
| Total Carbohydrate | 9 g | High clearly legible in the photo |
| Dietary Fiber | 7 g | High clearly legible in the photo |
| Soluble Fiber | 6 g | High clearly legible in the photo |
| Partially Hydrolyzed Guar Gum | 8 g | High clearly legible in the photo |
| Rice Bran | 2.5 g | High clearly legible in the photo |
| Arabinogalactan (from Larch) (Larix spp.) | 300 mg | High clearly legible in the photo |
| Pectin (from Apple) | 150 mg | High clearly legible in the photo |
| Green Tea Phytosome | 50 mg | High clearly legible in the photo |
Claims printed on the packaging:
“DIETARY SUPPLEMENT” · “Keep your gut healthy and in balance with a soluble prebiotic fiber that helps maintain healthy metabolism, promotes reg” · “cleanest manufacturing” · “most comprehensive testing” · “purest, highest-quality ingredients” · “Stimulates the growth of beneficial bacteria in the Gl tract*” · “Enhances satiety* (to keep you feeling fuller, longer)” · “Promotes regularity and optimal digestive function*”
Read by a vision model from 8 listing photos — verbatim extraction; OCR errors possible. Spot a mistake? It will be corrected on review.
Related research & consistency
prebiotic fiber (inulin-type) — NIH ODS — Fiber overview (MVMS context) · PubMed search: inulin prebiotic randomized trial · WebMD search: inulin · ClinicalTrials.gov — 22 registered studies
ℹ Use pattern in research: daily use; effects build over weeks as gut flora shift.
These notes state where label numbers and marketing framing sit relative to published research — documentation for your own judgment, not medical advice. LookCloser does not advise for or against taking any supplement.
Record lc-1385e318 · built July 23, 2026 · lookcloser.ai · corrections@lookcloser.ai