“Quercetin 1,000 mg per serving”
Evidence →The label promises 1,000 mg per serving. The panel says 1,000 mg. They match.
Exact product checked · GTIN 00850005551256NatureBell · checked Jul 22, 2026 · on sale since Nov 10, 2017🇺🇸 USPTO wordmark owner · Nature Bell, Inc. · CALIFORNIA, USA
Quick read · NatureBell
NatureBell Quercetin 1,000mg
Checked against public sources between July 22 and July 24, 2026 · LookCloser does not sell or recommend supplements.
240capsules · 120 servings
Does the marketing hold up?
Testing claimed — documentation not found. The observed listing and a related brand product page both claim third-party testing. Neither names the laboratory or links a product- or lot-specific report. …
Is the dose real?✓Listing and panel agreeboth say 1,000 mg of Quercetin
What a serving costs$0.23per serving, at the checked price
Is it tested?Claimed — no lab or certificate found
Who’s behind it?🇺🇸Nature Bell, Inc.corporation · CALIFORNIA, USA
Is it the real thing?✓Barcode matches outside records
Trouble on record?Recall check not run yeta gap in our records, not a finding about the product
“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✓ checked out2? couldn’t verifyno contradictions · no recalls
The label itself
What the Supplement Facts panel says
| Quercetin (as Quercetin Dihydrate) | 1,000 mg |
|---|
Printed on the package: Non-GMO · Gluten-Free · Soy-Free · Dairy-Free · Tree Nut-Free · Made in the USA · Vitamin Angels
We read 1 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
1 promise checks out. 2 could not be fully confirmed from public sources.
✓Matches the label1
?Couldn’t verify independently2
“NatureBell Quercetin 1,000mg - 240 Capsules - Ultra Strength Supplement for Healthy Immune Support* - Quercetin Dihydrate from Sophora Japonica -…”
Evidence →No named laboratory or lot-specific certificate was found for this exact product. A related brand page repeats a testing claim but names no issuer; its UPC is not published. NSF, 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.
“in the”
Evidence →“Made in USA” can describe only final bottling. Ingredient-sourcing records were not located for this product.
We looked and found no public proof. That does not count against the product.
Marketing language, not scored
Powerful Antioxidant & Immune Support
Quick read · 3 useful findings
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
CheckedIs the label honest?
Listing claim matches the Supplement Facts panel
The label promise and the Supplement Facts amount agree.
Evidence and sources
The listing claims 1 g; the photo-read Supplement Facts panel shows Quercetin (as Quercetin Dihydrate) at 1 g per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.
Locked evidence record →Open the full source-linked findingCheckedIs 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 findingCheckedWho is behind it?
The barcode identity checks out · 850005551256.
The barcode matches, so we are checking the right product rather than a look-alike.
Evidence and sources
UPCitemdb resolves 850005551256 to "NatureBell Quercetin 1000mg Per Serving 240 Capsules Super Immune Vitamins and" (Nature Bell) — consistent with this listing.
Locked evidence record →Open the full source-linked findingWhat remains open 1
- 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?
🇺🇸
Nature Bell, Inc.Corporation · exact supplement-class mark for NATUREBELL
Filed address
4951 Holt Blvd, Suite C, Montclair, California 91763, UNITED STATES
USPTO identifies the public owner or applicant behind this brand wordmark. This does not by itself identify the product manufacturer or prove where the product was made. Open USPTO source ↗
Where it sells
Price check for this exact product
Amazon
Exact UPC/GTIN match$27.99
$0.23 per labeled serving
matching UPC/GTIN · checked Sep 2, 2026
View on Amazon ↗Brand website
Official product-page candidate · UPC absent$32.95
Official shopping lead; excluded from exact price comparisons.
Quercetin 1000mg Per Serving | 240 Capsules · Default Title. Confirm the package UPC/GTIN before buying.
Check brand website ↗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.
The brand-page price is shown as a shopping lead only. It is excluded from the exact-product price difference because the page does not publish this record's matching UPC/GTIN.
The observed listing and related brand page repeat 1,000 mg, 240 capsules. 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 September 03, 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.