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Life Extension Mega Vitamin K2 45000mcg – Capsules
Product analysis · Life Extension

Life Extension Mega Vitamin K2 45000mcg – Capsules

MK-4 · Capsule

Why this score?
Testing & evidence
4/20
Ingredient/formulation quality
20/25
Value
15/20
Dose transparency
15/15
Manufacturer transparency
9/10
Label/ingredient transparency
9/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing transparency: 4/20
$24.03Amazon
CapsuleFormat
45,000 mcgDaily dose
30 capsulesPack size
$0.80Price/day
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We may earn a commission from qualifying purchases. This never affects our scores.

The score, explained

Our scoring methodology
Testing & evidence20/100
4 points contributed · weighting 20
Ingredient/formulation quality80.7/100
20 points contributed · weighting 25
Value73/100
15 points contributed · weighting 20
Dose transparency97/100
15 points contributed · weighting 15
Manufacturer transparency85/100
9 points contributed · weighting 10
Label/ingredient transparency87.5/100
9 points contributed · weighting 10

The score compares product data, not medical effectiveness or individual suitability. Prime and affiliate commission contribute no points.

Testing & evidence

No public evidence located

Evidence status
No public evidence located
Manufacturer statement
Life Extension’s own FAQ says: “Does the label accurately list what’s in the bottle? Yes… the ingredients are verified using advanced analytical methods like high performance liquid chromatography and mass spectrometry to ensure every product accurately meets label claims.” It also says Life Extension is “GMP registered with NSF International,” but I did not find an NSF registry page confirming this specific product.
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-27 14:36:03

Dose & value

Vitamin K form
MK-4Capsule
Daily dose
45,000 mcg
Serving size
1 capsule
Pack size
30 capsules
Servings per day
1
Price per day
$0.80
Price last checked
2026-09-26 16:50:31

Daily cost uses the recorded label serving; a larger dose earns no value advantage. The label serving is not a recommendation for your personal intake.

Vitamin K2 formulation details

Comparison form
MK-4
Named K2 raw material
Not disclosed
All-trans claim as labelled
Not disclosed
Vitamin D3 per serving (mcg)
Not disclosed
Vitamin K1 per serving (mcg)
Not disclosed
Standardisation / purity as labelled
Not disclosed
K2 per serving as labelled
45000 mcg per serving
Serving as labelled
1 capsule
Daily amount (mcg, single direction only)
45000
Other active ingredients
None declared
Pack size as labelled
30 capsules
Recommended serving / frequency
Take one capsule daily with food
Allergen statement
Not disclosed
Vegan / vegetarian label status
Not disclosed

Ingredients & suitability

Excipients
Not disclosed — check the current label
Allergens
Not disclosed
Carrier / source
Not disclosed — check the current label
Other active ingredients
None declared

Manufacturer transparency

Brand
Life Extension
Legal company
Quality Supplements and Vitamins, Inc. (d/b/a Life Extension)
Manufacturing model
Not conclusively disclosed (mixed in-house/third-party)
Manufacturing location
United States (New Jersey facility referenced)

View the full brand profile →

What the record makes clear

  • Active amount is disclosed.
  • Daily cost can be calculated from the recorded serving.

What to keep in mind

  • Verify the current label and the batch covered by any testing report.
  • A product score cannot determine whether you need a supplement.

Explore the alternatives

Compare alternative

Carlyle Vitamin K2 100mcg – Softgels

Why this score?
Testing & evidence
9/20
Ingredient/formulation quality
20/25
Value
20/20
Dose transparency
15/15
Manufacturer transparency
7/10
Label/ingredient transparency
9/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Testing claimed
Manufacturer statement
Carlyle’s own manufacturing page says: “We conduct testing in our microbial lab, examining for purity, potency, and composition, to validate the identity of each of our ingredients.”
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-27 14:44:36
$0.06per day
$8.69per pack
View AnalysisBuy Nowon Amazon
Compare alternative

Nutricost Vitamin K2 100mcg – Softgels

Why this score?
Testing & evidence
9/20
Ingredient/formulation quality
20/25
Value
18/20
Dose transparency
15/15
Manufacturer transparency
9/10
Label/ingredient transparency
9/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Testing claimed
Manufacturer statement
Nutricost product page states: “Third-Party Tested †” and “Nutricost products are tested by an independent, accredited lab to help verify that what’s on the label is what’s in the bottle.”
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-27 15:00:47
$0.07per day
$17.95per pack
View AnalysisBuy Nowon Amazon
Compare alternative

Nutricost Vitamin D3 + K2 100mcg – Softgels

Why this score?
Testing & evidence
9/20
Ingredient/formulation quality
20/25
Value
17/20
Dose transparency
15/15
Manufacturer transparency
9/10
Label/ingredient transparency
9/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Testing claimed
Manufacturer statement
Manufacturer product page says: "Third-party tested" and "2 active ingredients tested for quality" (JUN 2026).
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-27 15:05:29
$0.12per day
$14.95per pack
View AnalysisBuy Nowon Amazon