“Qunol Calcium Magnesium Zinc 3-in-1 Tablet, Immune System Support,”
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 00898440001851Qunol · checked Jul 31, 2026 · on sale since Jul 21, 2023USPTO returned 2 exact supplement-class owner records · inspect the identity trail
Quick read · Qunol
Qunol Calcium Magnesium Zinc 3-in-1 Tablet
Checked against public sources on July 31, 2026 · LookCloser does not sell or recommend supplements.
270tablets · 90 servings
Does the marketing hold up?
Reviews went from 213 to 228 between January 30 and July 30, 2026 — 68% of them arrived in a single month. A count that moves steadily is ordinary. A sudden burst is what deserves a closer look.
Is the dose real?Panel read — dose not verified4 ingredients listed; no advertised amount we could confirm against them
What a serving costs$0.22per 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
The label itself
What the Supplement Facts panel says
| Vitamin D3 (as Cholecalciferol) | 15 mcg |
|---|---|
| Calcium (as Calcium Carbonate) | 1000 mg |
| Magnesium (as Magnesium Oxide) | 400 mg |
| Zinc (as Zinc Oxide) | 15 mg |
Printed on the package: Gluten Free · Non-GMO · No Artificial Colors · Vegetarian
We read 4 lines from the package photograph. It is our transcript of the label, not the manufacturer’s panel, and it may be incomplete.
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.
Needs explanationCan you trust the review pattern?
Reviews went from 213 to 228 between January 30 and July 30, 2026 — 68% of them arrived in a single month.
A count that moves steadily is ordinary. A sudden burst is what deserves a closer look.
Evidence and sources
The dated series runs from 213 written reviews on January 30, 2026 to 228 on July 30, 2026. Up to 155 written reviews were added within a single ~30-day window — 68% of the total. Sudden bursts are the usual fingerprint of incentivized or bought reviews; a steady climb is not.
Locked evidence record →Open the full source-linked findingPublic 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 findingCheckedIs the label honest?
Every ingredient shows its amount · 4 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 findingCheckedWho is behind it?
The barcode identity checks out · 898440001851.
The barcode matches, so we are checking the right product rather than a look-alike.
Evidence and sources
UPCitemdb resolves 898440001851 to "Qunol Magnesium 3 in 1 Tablets with Calcium Magnesium & Zinc for Immune Support" (Qunol) — consistent with this listing.
Locked evidence record →Open the full source-linked findingWhat remains open 2
- No FDA recall matched this brand in the current search.
- We have not found a public label filing for this exact product.
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
We could not match an amount on this product to a studied range for the same ingredient, so these links are ingredient background rather than a measurement of this product.
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 400 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.
The panel lists 15 mg of zinc per serving. Studies we found used 8 mg–40 mg a day, so this sits inside that range.
0studied 8 mg–40 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
Amazon
Exact UPC/GTIN match$19.99
$0.22 per labeled serving
matching UPC/GTIN · checked Aug 1, 2026
View on Amazon ↗iHerb
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 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 ↗Only one exact price was available at build time; prices change by date, seller, and promotion.
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 August 02, 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.