No named laboratory or lot-specific certificate was found for this exact product. The exact brand page repeats a testing claim but names no issuer. 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.

Bronson Vitamin K2 MK-7 100 MCG
Checked against public sources between July 21 and September 3, 2026 · LookCloser does not sell or recommend supplements.
Does the marketing hold up?
Package and trademark records name different responsible entities. The package says manufactured by: Bronson Laboratories, 70 Commerce Drive Hauppauge, NY 11788 USA. USPTO names Bronson Nutritionals, LLC as the exact wordmark owner. …
“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.
What the Supplement Facts panel says
| Vitamin K2 | 100 mcg |
|---|
Printed on the package: GMO-FREE · GLUTEN-FREE · SOY-FREE · GMO FREE · GLUTEN FREE · SOY FREE · LAB TESTED · HIGH QUALITY INGREDIENTS
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.
The checks, one by one
The public sources did not settle the marketing promises on this label.
?Couldn’t verify independently1
We looked and found no public proof. That does not count against the product.
Marketing language, not scored
Premium Vitamin K2 MK-7 · AT THE BEST VALUE · provides 100 MCG of premium K2 as MK-7 per vegetarian tablet · We strive to support your good health and well-being through high quality supplements at the best value
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
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 findingThe barcode identity checks out · 716563311902.
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 “Vitamin K2 MK-7 100 MCG” (variant: 120 Count) — identity confirmed across retailer listings.
Locked evidence record →Open the full source-linked findingWhat remains open 3
- No FDA recall matched this brand in the current search.
- We have not found a public label filing for this exact product.
- Barcode checksum is valid; no independent product record was found.
These are evidence gaps, not strikes against the product.
Filed address
70 Commerce Drive, Hauppauge, NEW YORK 11788, 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 ↗
Price check for this exact product
Brand website
Exact UPC/GTIN match$0.08 per labeled serving
matching UPC/GTIN · checked Jul 21, 2026
View on Brand website ↗Amazon
Exact UPC/GTIN match$0.08 per labeled serving
matching UPC/GTIN · checked Sep 2, 2026
View on Amazon ↗iHerb
Not confirmedWe 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 confirmedWe 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 confirmedWe 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 2 sellers at the same price at check time.
The observed listing and exact brand page repeat 100 mcg. 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.