“from Chelated Magnesium Glycinate SUPPORTS NERVE, BONE & MUSCLE HEALTH - Magnesium”
Evidence →Published research exists for ingredients in this formula. Whether this product’s doses match those studies could not be confirmed.
Exact product checked · GTIN 00850052593421Qunol · checked Jul 26, 2026 · on sale since Nov 22, 2024USPTO returned 2 exact supplement-class owner records · inspect the identity trail
Quick read · Qunol
Qunol Magnesium Glycinate, 300mg
Checked against public sources on July 26, 2026 · LookCloser does not sell or recommend supplements.
150tablets · 75 servings
Does the marketing hold up?
Registered owner records: Quten Research Institute, LLC · Quten IP Holdings, LLC. The public ownership record is ambiguous. We show the exact candidates instead of choosing one by name similarity.
Is the dose real?✓Listing and panel agreeboth say 300 mg of Magnesium
What a serving costs$0.40per serving, at the checked price
Is it tested?No testing claim made
Who’s behind it?USPTO lists 2 owner recordssame brand name, more than one registrant — we don’t choose between them
Is it the real thing?✓Barcode matches outside records
Trouble on record?✓No recalls found
“Couldn’t verify” means we looked and found no public proof — not a mark against the product. Most supplement claims cannot be independently verified by anyone, so grey is the normal state of this industry.
1◖ partly confirmedno contradictions · no recalls
Marketing claims, checked
The checks, one by one
The public sources did not settle the marketing promises on this label.
◐Partly confirmed1
Ingredient research can support context, but it is not a trial of this exact product.
Quick read · 4 useful findings
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Public contextWho is behind it?
Registered owner records: Quten Research Institute, LLC · Quten IP Holdings, LLC
The public ownership record is ambiguous. We show the exact candidates instead of choosing one by name similarity.
Evidence and sources
USPTO returned multiple live supplement-class records for the exact brand wordmark: Quten Research Institute, LLC, Quten IP Holdings, LLC. These records answer who owns registrations for the brand; the separate product-to-owner or manufacturer link remains open.
Locked evidence record →Open the full source-linked findingChecks outIs the label honest?
Every ingredient shows its amount · 1 ingredients listed.
Every ingredient shows its real amount — nothing is hidden in a proprietary blend.
Evidence and sources
The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.
Locked evidence record →Open the full source-linked findingChecks outWho is behind it?
The barcode identity checks out · 850052593421.
The barcode matches, so we are checking the right product rather than a look-alike.
Evidence and sources
The brand's store lists this exact barcode as “Magnesium Glycinate, 300mg” (variant: 150ct) — identity confirmed across retailer listings.
Locked evidence record →Open the full source-linked findingChecks outCan you trust the review pattern?
Reviews rose from 84 to 130 between February 17 and July 22, 2026 — no sudden jump.
A count that moves steadily is ordinary. A sudden burst is what deserves a closer look.
Evidence and sources
Written reviews rose from 84 to 130 between February 17 and July 22, 2026. The largest rise inside any single 30-day window was about 11, so the count moved in steps rather than in one burst.
Locked evidence record →Open the full source-linked findingWhat remains open 3
- We have not found a public label filing for this exact product.
- No FDA recall matched this brand in the current search.
- Barcode checksum is valid; no independent product record was found.
These are evidence gaps, not strikes against the product.
Who owns the brand wordmark?
The brand has 2 exact supplement-class records
These are the USPTO records behind the brand name. We show them all rather than choosing one by similarity.
🇺🇸Quten Research Institute, LLC
Delaware, USA · Registration 7724060
10 Bloomfield Ave., Building B, Pine Brook, New Jersey 07058, UNITED STATES
Goods covered by this record
IC 005: Nutritional supplements.
🇺🇸Quten IP Holdings, LLC
NEVADA, USA; DELAWARE, USA · Registration 4690885
39 Plymouth Street, Fairfield, NEW JERSEY 07004, UNITED STATES
Goods covered by this record
IC 005: Dietary supplements.
This answers who owns registrations for the brand wordmark. It does not by itself prove which entity made, imported, or sold this specific product. Open USPTO source ↗
Research behind the findings
Dose and research context
The label amount is shown beside the range used in the linked ingredient studies.
Dose vs research
Magnesium
STUDIED RANGE0525 mg
300 mg per serving — within the 200–420 mg/day used in the linked studies.
Linked ingredient research · label amount, not a recommendation
Background reading
What the research says about these amounts
Not a score. Studies disagree with each other and change over time, so this sits beside the evidence rather than counting toward it — it is here so you can read the sources yourself.
The panel lists 300 mg of magnesium per serving. Studies we found used 200 mg–420 mg a day, so this sits inside that range.
0studied 200 mg–420 mg
Study ranges differ between trials and change as research changes. This is background reading, not a pass, a failure, or a recommendation.
Where it sells
Price check for this exact product
Brand website
Exact UPC/GTIN match$29.99
$0.40 per labeled serving
matching UPC/GTIN · checked Jul 26, 2026
View on Brand website ↗Amazon
Exact UPC/GTIN match$29.99
$0.40 per labeled serving
matching UPC/GTIN · checked Jul 26, 2026
View on Amazon ↗iHerb
Exact UPC/GTIN match$31.66
$0.42 per labeled serving
matching UPC/GTIN · checked Jul 26, 2026
View on iHerb ↗Target
Not confirmedNo exact listing saved
We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search Target ↗Walmart
Not confirmedNo exact listing saved
We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search Walmart ↗Same UPC/GTIN observed across 3 sellers. Brand website was lowest at $29.99; iHerb was highest at $31.66 — a $1.67 range at check time.
The observed listing and exact brand page repeat 300 mg. That confirms cross-page consistency of the published claim, not the product contents.
Reference prices only · no affiliate links · every compared seller must publish the matching UPC/GTIN.
Want to inspect the evidence?
The full report shows every source, the exact unresolved question, and the documentation that would settle it.
Record built July 26, 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.