Full record · 693749118022 · back to the summary
THORNE - Biotin - Vitamin B7 Supplement for Healthy Hair, Nails, Skin & Metabolism
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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 1 declared row. That supports ingredient-by-ingredient review; it does not verify the contents.
| Panel row | Amount | %DV | What to notice |
|---|---|---|---|
| Biotin | 8 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.
UPC independently corroborated
UPCitemdb resolves 693749118022 to "THORNE - Biotin - Vitamin B7 Supplement for Healthy Hair Nails Skin & Metaboli" (Thorne) — consistent with this listing.
No data yet: Label math could not be verified
The retained listing evidence does not establish net weight, per-serving dose, servings per container, so the dose claim cannot yet be checked against serving arithmetic. This is a neutral evidence gap, not a pass or strike.
No data yet: Testing claimed — documentation not found
The observed listing claims third-party testing without naming a lab or certifier. No product-bound report is retained, so the claim cannot be verified as stated. Under NSF/ANSI 173, NSF lists Thorne® products, including Thorne® L-Glutamine Powder, but the retained registry result does not cover this exact SKU. IFOS, USP, and Informed-Sport were not checked in this record.
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.
Public label filing not retained
This record does not currently hold an identity-bound public label filing for the exact product. That is a LookCloser coverage gap, not evidence that no filing exists.
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® Vitamin K”. 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: the observed listing, retained brand product page, the NSF/ANSI 173 certified-products registry, any linked COA or test report; IFOS, USP, Informed-Sport were not queried | No named laboratory or lot-specific certificate was found for this exact product. No exact brand product page was available for a document check. Under NSF/ANSI 173, NSF lists Thorne® products, including Thorne® L-Glutamine Powder, but not this exact SKU. IFOS, USP, and Informed-Sport were not checked in this record. This is a public-evidence limit, not a finding that testing did not occur. |
| Benefit claim “…for Healthy Hair, Nails, Skin & Metabolism - Supports Nerve Health* - Third-Party Certified - Glut…” | Not assessed We looked for: whether the ingredient doses on the label match the doses used in published research | Ingredient-level evidence for this formula isn’t in our knowledge base yet. Recorded as not assessed — not as a negative. |
“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.
Verifiability profile — 2 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
| UPC (barcode) — also our record ID | 693749118022 — via source listing UPC |
| Brand | THORNE |
| Source listing identifier | B0797CG5R8 |
| Retailer listing title | THORNE - Biotin - Vitamin B7 Supplement for Healthy Hair, Nails, Skin … show full titleTHORNE - Biotin - Vitamin B7 Supplement for Healthy Hair, Nails, Skin & Metabolism - Supports Nerve Health* - Third-Party Certified - Gluten, Dairy & Soy-Free - 60 Capsules |
From the label (photo-read)
| Serving size | One Capsule |
| Servings per container | 60 |
| Pack statement | 60 CAPSULES |
| Badges printed on pack | Third-Party Certified |
Supplement Facts panel (photo-read):
| Ingredient | Amount per serving | Reading confidence |
|---|---|---|
| Biotin | 8 mg | High clearly legible in the photo |
Claims printed on the packaging:
“promotes fingernail strength, hair and skin health, and supports healthy metabolism.” · “cleanest manufacturing” · “most comprehensive testing” · “purest, highest-quality ingredients” · “Supports the health of nails, hair, skin, and benefits metabolic processes*” · “An essential cofactor for numerous enzymes in the body involved in the metabolism of fats, carbs, and amino acids” · “*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose,” · “Take 1 capsule one to two times daily.”
Read by a vision model from 8 listing photos — verbatim extraction; OCR errors possible. Spot a mistake? It will be corrected on review.
Ingredient science
No knowledge-base entry yet for this formula's active ingredients — entries are added as the KB grows. Absence of a science card is a coverage gap, not a judgment.
Ingredient science — NIH references
Biotin — NIH ODS · MedlinePlus · PubMed (1,606) · no UL; high doses interfere with lab tests
Reference data from the NIH Office of Dietary Supplements, IOM Dietary Reference Intakes, and PubMed. A Tolerable Upper Intake Level is a documented reference figure, not a safety verdict — both the declared amount and the reference are shown for your own judgment. LookCloser gives no medical advice.
Record 693749118022 · built July 23, 2026 · lookcloser.ai · corrections@lookcloser.ai