“Certified”
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.
Exact product checked · barcode not publishedBiosyntra · checked Jul 22, 2026 · on sale since May 16, 2025
Quick read · Biosyntra
Biosyntra Pure Quercetin 500mg
Checked against public sources on July 22, 2026 · LookCloser does not sell or recommend supplements.
120capsules · 60 servings
Does the marketing hold up?
Testing claimed — documentation not found. 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. …
Is the dose real?Panel read — dose not verified1 ingredient listed; no advertised amount we could confirm against them
What a serving costsNo price found for this exact barcode
Is it tested?Claimed — no lab or certificate found
Who’s behind it?No exact match in USPTO
Is it the real thing?No barcode publishedso it can’t be matched against certification, recall or other retailer 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◖ partly confirmed2? couldn’t verifyno contradictions · no recalls
The label itself
What the Supplement Facts panel says
| ercetin | 500 mg |
|---|
Printed on the package: Non-GMO · GMP Certified Facility · GMO FREE · Non-GMO & Gluten-Free · Hypoallergenic Formula · 100% NATURAL · GMP CERTIFIED PRACTICE · CRUELTY FREE
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
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.
?Couldn’t verify independently2
“Tested”
Evidence →No named laboratory or lot-specific certificate was found for this exact product. No exact brand product page was available for a document check. 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 · Clean & Pure Ingredients
Quick read · 2 useful findings
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Public contextIs the label honest?
The headline amount is not tied to a panel row for the same ingredient
You are being sold on an ingredient the verified panel does not separately declare. The brand should explain the mismatch.
Evidence and sources
The listing presents 500 mg for quercetin, but vision:google/gemini-2.5-flash does not contain a same-name quantified row. The saved image read may be incomplete, so this is a specific question to resolve rather than a contradiction.
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 findingWhat remains open 2
- No dated review-history series is on file yet.
- Brand ownership is not settled in this record.
These are evidence gaps, not strikes against the 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$9.99
Lowest New observed via Keepa on 2026-08-29.
View on Amazon ↗Brand website
Official storefrontNo price confirmed
Open the brand storefront to search manually.
No defensible same-product page was saved from the brand catalog.
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 ↗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.