full reportFull record · 693749015338 · back to the summary
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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.
The listing-image panel publishes an amount for each of its 1 listed row. That supports ingredient-by-ingredient review; it does not verify the contents.
| Panel row | Amount | %DV | What to notice |
|---|---|---|---|
| Magnesium (as Magnesium Glycinate) | 120 mg | — |
FDA rules (21 CFR 101.36) require the amount of each dietary ingredient per serving unless hidden in a listed “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 listed amounts are independently verified and how they compare with relevant research.
vision:google/gemini-flash-1.5 Amounts are shown as listed panel data, not independently lab-tested contents.
Every check we ran
Confirmed evidence
These checks found support in the public record. They confirm specific facts, not the product as a whole.
USPTO lists Thorne Research, Inc. (['CORPORATION', 'CORPORATION']) in ['IDAHO, USA', 'SOUTH CAROLINA, USA'] for the exact brand wordmark. This identifies the USPTO mark owner or applicant; it does not by itself prove who manufactures or sells this product.
Open Food Facts resolves 693749015338 to "Magnesium Glycinate" (Thorne) — consistent with this listing.
Written reviews grew from 226 to 519 across 2026-02-14 – 2026-07-23 with no single manufactured spike (largest 30-day gain ~72).
Documented concerns
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
We looked for these signals but could not settle them from public sources. A gap is not a strike.
The observed listing claims third-party testing without naming a lab or certifier. No product-bound report is saved, so the claim cannot be verified as stated. Under NSF/ANSI 173, NSF lists Thorne® products, including Thorne® L-Glutamine Powder, but the saved registry result does not cover this exact SKU. IFOS, USP, and Informed-Sport were not checked in this record.
The current image extraction saved 1 ingredient name(s) but no usable amounts. This is a LookCloser processing gap, not evidence that the brand withheld the numbers; dose arithmetic is withheld until the panel is re-read.
Published sources describe how magnesium 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 — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation.
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® Magnesium Glycinate”. Certification covers contents and contaminants — not effectiveness.
This record does not currently hold an matched to this exact product public label filing for the exact product. That is a LookCloser coverage gap, not evidence that no filing exists.
The paid catalog links this exact item to a parent listing. Review counts on public product pages may be shared across sizes, flavors, or other variants, so the count history is listing context — not evidence that reviewers received or tested this exact variant.
Exact-listing history records written-review counts from 210 on 2026-01-31 to 519 on 2026-07-23 (net +309). Count movements can reflect sales, listing variants, collection resets, or moderation; this history does not establish whether reviews are authentic.
What to ask and check
Ask the brand or seller
Can you send the certificate of analysis (COA) for the lot number on my bottle?
A real COA names the testing laboratory, the test date, the lot it covers, and what was measured. “Third-party tested” with no document behind it is a marketing sentence.
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
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.
Scan the barcode on the package and confirm it reads 693749015338.
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.
Look the product up yourself in NSF’s certified-products registry.
Search “Thorne®” at info.nsf.org — certification covers contents and contaminants, not effectiveness.
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.
What the listing promises — claim by claim
| Claim | Status | What we found |
|---|---|---|
| Quality-testing claim “…Third-Party 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, saved 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 “THORNE - Magnesium Glycinate - Supports Restful Sleep, Muscle Relaxation, Heart Heal…” | 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
| Ingredient | Where this label sits | Reading |
|---|---|---|
| Magnesium (as Magnesium Glycinate) | shaded = doses used in studies (200 mg–420 mg) · bar = this label | 120 mg — below 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.
Documented cautions
Statements from published sources about these ingredients — not advice about this product, and not a complete safety review. Anyone taking medication should talk to a pharmacist or clinician.
Verifiability profile — 3 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 | 693749015338 — via source listing UPC |
| Brand | THORNE |
| Source listing identifier | B0F5XYHRPV |
| Retailer listing title | THORNE - Magnesium Glycinate - Supports Restful Sleep, Muscle Relaxati… show full titleTHORNE - Magnesium Glycinate - Supports Restful Sleep, Muscle Relaxation, Heart Health & Metabolism* - Chelated Magnesium Capsules - Third-Party Certified - Gluten, Dairy & Soy-Free - 90 Servings |
| USPTO brand owner | Thorne Research, Inc. · ['CORPORATION', 'CORPORATION'] · ['IDAHO, USA', 'SOUTH CAROLINA, USA'] |
| Owner filed address | 25820 Highway 2 West, Sandpoint, IDAHO 83864, UNITED STATES |
From the label (photo-read)
| Serving size | One Capsule |
| Servings per container | 90 |
| Pack statement | 90 CAPSULES |
| Badges printed on pack | Third-Party Contents Certified, NSF |
Supplement Facts panel (photo-read):
| Ingredient | Amount per serving | Reading confidence |
|---|---|---|
| Magnesium (as Magnesium Glycinate) | 120 mg | High clearly legible in the photo |
Claims printed on the packaging:
“Chelated for High Absorption” · “DIETARY SUPPLEMENT” · “An optimally absorbed chelated form of magnesium that promotes restful sleep, stress management, and muscle relaxation*” · “Promotes relaxation before bedtime to support restful sleep” · “Supports a calm response to everyday stress and emotional well-being” · “Helps relax smooth and skeletal muscle” · “Supports the health of the heart and blood vessels, brain, bones, muscles, and lungs” · “These statements have not been evaluated by the Food and Drug Administration.”
Read by a vision model from 8 listing photos — verbatim extraction; OCR errors possible. Spot a mistake? It will be corrected on review.
Where it sells
| Seller | Price |
|---|---|
| Retailer listing ↗ | $26.00 checked Jul 24, 2026 — varies by variant/session; price history pending |
Official brand domain: www.thorne.com. This storefront does not expose a complete public catalog count.
Reference links for identification only — LookCloser has no affiliate relationships and earns nothing from any link on this page.
Ingredient science — NIH references
Magnesium — NIH ODS · MedlinePlus · PubMed (11,814) · UL 350 mg (SUPPLEMENTAL magnesium only (not from food))
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 listed amount and the reference are shown for your own judgment. LookCloser gives no medical advice.
Related research & consistency
magnesium — NIH ODS — Magnesium fact sheet · PubMed search: magnesium glycinate supplementation · WebMD: magnesium · ClinicalTrials.gov — 3,206 registered studies
ℹ Use pattern in research: daily oral use; chelated forms (glycinate) are studied for absorption — note labels may state compound mass rather than elemental magnesium, which differs ~7-fold.
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 693749015338 · built July 24, 2026 · lookcloser.ai · corrections@lookcloser.ai