LookCloser.aipublic supplement evidence
Exact product checked · GTIN 00737870233435Life Extension · checked Jul 21, 2026 · on sale since May 6, 2019🇺🇸 USPTO wordmark owner · Life Extension Foundation, Inc. · FLORIDA, USA
Quick read · Life Extension

Life Extension Super K

Checked against public sources between July 21 and July 24, 2026 · LookCloser does not sell or recommend supplements.

90softgels
90servings per container

Does the marketing hold up?

Every ingredient shows its amount · 4 ingredients listed. Every ingredient shows its real amount — nothing is hidden in a proprietary blend.

Is the dose real?Panel read — dose not verified4 ingredients listed; no advertised amount we could confirm against them
What a serving costs$0.27per serving, at the checked price
Is it tested?ConsumerLab seal printed on the labelwe read it off the package photo
Who’s behind it?🇺🇸Life Extension Foundation, Inc.corporation · FLORIDA, USA
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? couldn’t verifyno contradictions · no recalls
The label itself

What the Supplement Facts panel says

Serving size Serving Size 1 Softgel · 90 servings per container

Vitamin C (as ascorbyl palmitate)10 mg
Vitamin K (as phytonadione)2000 mcg
Vitamin K2 (as menaquinone-4)1000 mcg
Vitamin K2 (as MenaQ7® trans menaquinone-7)180 mcg

Printed on the package: NON GMO LE CERTIFIED · GLUTEN FREE · NON GMO · LE CERTIFIED · ConsumerLab.com

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.

?Couldn’t verify independently1

“majority of our products are non-GMO, gluten-free and manufactured in the USA with globally sourced ingredients, and a Certificate of Analysis is…”

“Made in USA” can describe only final bottling. Ingredient-sourcing records were not located for this product.

Evidence →

We looked and found no public proof. That does not count against the product.

Quick read · 1 useful finding

What is worth knowing.

Headlines first. Open evidence only when you want the source trail.

CheckedIs 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 finding
What 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.

Who owns the brand wordmark?
🇺🇸
Life Extension Foundation, Inc.Corporation · exact supplement-class mark for LIFE EXTENSION
Registration3789340
Registered2010-05-18
AssignmentsYes

Filed address
3600 West Commercial Blvd., Ft. Lauderdale, FLORIDA 33309, 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
$24.00

$0.27 per labeled serving

matching UPC/GTIN · checked Sep 2, 2026

View on Amazon ↗

iHerb

Exact UPC/GTIN match
$24.00

4.8/5 · 5,604 ratings

$0.27 per labeled serving

matching UPC/GTIN · checked Jul 24, 2026

View on iHerb ↗

Target

Not confirmed
No 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 confirmed
No 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 ↗

Same UPC/GTIN observed across 2 sellers at the same price at check time.

Reference prices only · no affiliate links · every compared seller must publish the matching UPC/GTIN.

Want the complete evidence trail?

The summary stops at product-specific facts. The full report preserves every source, calculation, limitation, and unresolved check for review or sharing.

Read / share full evidence →

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.