“to swallow, third party tested & made in NSF-GMP Certified facility in the”
Evidence →A testing body is named on the listing, but we found no lot-specific certificate of analysis.
Exact product checked · barcode not publishedSandhu's · checked Sep 1, 2026 · on sale since Aug 23, 2024🇺🇸 USPTO wordmark owner · Sandhu Products, Inc. · CALIFORNIA, USA
Quick read · Sandhu's
Zinc Quercetin Supplements 360 Vegetarian Capsules for Men &…
Checked against public sources on September 1, 2026 · LookCloser does not sell or recommend supplements.
Does the marketing hold up?
🇺🇸 Brand owner: Sandhu Products, Inc. · corporation, CALIFORNIA, USA. This tells you who is behind the brand and where the trademark record points. It does not by itself identify the manufacturer.
Is the dose real?Can’t check — no panel filed
What a serving costsNo price found for this exact barcode
Is it tested?Claimed — not yet checked
Who’s behind it?🇺🇸Sandhu Products, Inc.corporation · CALIFORNIA, USA
Is it the real thing?No barcode publishedso it can’t be matched against certification, recall or other retailer 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.
2◖ 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 confirmed2
“to swallow, third party tested & made in NSF-GMP Certified facility in the”
Evidence →“GMP-certified” describes factory processes, not what is in the bottle. The claim does not name a certifier or public register that a shopper can check.
Ingredient research can support context, but it is not a trial of this exact product.
Quick read · 1 useful finding
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
CheckedCan you trust the review pattern?
Reviews rose from 2 to 4 between March 2 and August 23, 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 2 to 4 between March 2 and August 23, 2026. The largest rise inside any single 30-day window was about 1, so the count moved in steps rather than in one burst.
Locked evidence record →Open the full source-linked findingWhat remains open 1
- No FDA recall matched this brand in the current search.
These are evidence gaps, not strikes against the product.
Who owns the brand wordmark?
🇺🇸
Sandhu Products, Inc.Corporation · exact supplement-class mark for SANDHU'S
Filed address
4580 Contractors Place, Livermore, California 94551, 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 ↗
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.
Buying options
Where you can check or buy it
Open related seller leads before buying, then confirm the flavor, count, and serving size. Their prices are visible, but LookCloser does not claim savings until the pages share a UPC/GTIN.
Amazon
Submitted listing$59.99
Exact page checked on 2026-09-01.
View on Amazon ↗Brand website
Official product-page candidate · UPC absent$30.00
Useful official shopping lead; excluded from exact price comparisons.
Zinc Quercetin · 1. The page matches the same named product, but omits the identifier needed to bind the exact sellable unit.
Check brand website ↗iHerb
Not confirmedNo price confirmed
No matching product page was confirmed in the current record. Search results cannot be attached as this product until the UPC/GTIN matches.
Search iHerb ↗Target
Not confirmedNo price confirmed
No matching product page was confirmed in the current record. Search results cannot be attached as this product until the UPC/GTIN matches.
Search Target ↗Walmart
Not confirmedNo price confirmed
No matching product page was confirmed in the current record. Search results cannot be attached as this product until the UPC/GTIN matches.
Search Walmart ↗Related brand page publishes 5.0/5 across 479 reviews
The related page's review pool may differ from the observed listing. Because the page does not publish a matching UPC/GTIN, LookCloser does not attribute that review aggregate to this exact sellable unit.
Prices and stock are point-in-time observations. Related pages are never used as product evidence. No affiliate links; LookCloser earns nothing from these sellers.
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.