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Super K

Life Extension
4.7
★ ★ ★ ★ ★
(12609 ratings)
Vitamin K 2600 mcg
Product Image
Score96

A high-potency, full-spectrum Vitamin K blend in a bioavailable softgel for heart and bone health.

How scoring works
Quantity:90 Softgel(s) • (90 servings)
Goals:
Cardiovascular Support
General Health
Bone Health
Heart Health
Anti-Aging

Score 96

A high-potency, full-spectrum Vitamin K blend in a bioavailable softgel for heart and bone health.

How scoring works

Also available as

1 option
K:45mcg • 90 Softgel(s) servings K:45mcg • 90 Softgel(s) • 90 servings $13.50 ($0.15 per serving)
$16.86($0.18 per serving)
iHerb
$ 22.50
Pure Formulas
$ 24.00
Walmart
$ 22.50
Amazon
$ 44.52
Vitacost
$ 24.00
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Analysis

This high-potency supplement delivers 2600 mcg of total Vitamin K from three different sources. It includes Vitamin K1, Vitamin K2 MK-4, and Vitamin K2 MK-7 to support both blood health and mineral management. The softgel format uses oil to help ensure these fat-soluble vitamins are well absorbed by your system.

By using multiple subtypes, this formula covers a wider range of health pathways than many single-ingredient products. It supports arterial flexibility and helps keep your bones strong by directing calcium to the right places. It is a solid choice for anyone looking for thorough vitamin K support.

Pros

  • Full-spectrum K1, MK-4, and MK-7
  • Softgel aids fat-soluble absorption
  • Very high total vitamin K dose
  • Includes Vitamin C for stability
  • Excellent price for the potency

Cons

  • Very high dose may not be needed for everyone
  • MK-4 requires consistent daily use
  • Contains only 90 softgels

Warnings

  • Strongly advised to consult a doctor if on blood thinners
  • Do not exceed the suggested serving size
  • Store in a cool, dry place

Nutrient quality

97 Highest impact

Inclusion of multiple Vitamin K subtypes ensures that diverse biological pathways for mineral management are addressed. Softgel delivery and the presence of fat-soluble cofactors support optimal systemic absorption.

Ingredient transparency

92 Highest impact

Labeling is very clear regarding the forms of Vitamin K included, although the specific milligram breakdown between subtypes is not always as explicit as some single-ingredient products. Usage instructions are simple and easy for consumers to implement.

Customer satisfaction

97 Highest impact

An exceptionally large review count and a very high average rating indicate widespread consumer trust and satisfaction. User feedback strongly supports the perceived quality and effectiveness of the product.

Value for money

99 Highest impact

The price per serving is exceptionally competitive, making this one of the best values in the Vitamin K category. High-potency full-spectrum coverage at a low cost provides significant consumer benefit.

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Goals

Cardiovascular Support
Impact
Highest effect
A+ Goal FitA+ Strength of SupportC CoverageA+ Formula Quality

A potent Vitamin K complex addresses the critical pathway of arterial calcification. This blend of K1 and K2 forms supports vascular elasticity and long-term cardiovascular health by directing minerals to the proper tissues.

Utilizing Menaquinone-7 ensures that the nutrient remains active in the circulatory system for a sustained period. The softgel delivery format provides an essential lipid matrix for optimal absorption of these fat-soluble vitamins.

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General Health
Impact
Highest effect
A Goal FitA Strength of SupportB- CoverageA+ Formula Quality

Vitamin K1 and multiple Vitamin K2 subtypes (MK-4 and MK-7) provide a full-spectrum approach to cardiovascular and bone health support. Ingredients like Ascorbyl Palmitate add supportive antioxidant stability to the fat-soluble vitamins.

This high-potency formula appears well-aligned with requirements for long-term arterial resilience and mineral distribution. The use of a lipid-based softgel ensures that all Vitamin K forms are efficiently absorbed and biologically utilized for foundational wellness.

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Bone Health
Impact
Highest effect
A Goal FitA+ Strength of SupportC+ CoverageA+ Formula Quality

This high-potency Vitamin K complex provides 2600mcg to support the proper distribution of calcium and skeletal mineralization. Softgel delivery with a lipid base ensures maximum systemic absorption for these fat-soluble vitamins.

The inclusion of Vitamin C as ascorbyl palmitate provides auxiliary support for the collagen matrix that provides bone with its structural resilience. High-quality transport regulation helps activate the proteins required to bind minerals to the skeletal tissue.

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Heart Health
Impact
Highest effect
A Goal FitA Strength of SupportC+ CoverageA+ Formula Quality

Vitamin K2 and Vitamin K1 provide focused support for vascular flexibility and arterial structure. This full-spectrum complex appears well aligned with maintenance of healthy cardiovascular tissue.

Providing 2600mcg of total Vitamin K in a lipid-based softgel offers superior bioavailability and heart health support. The formula is highly specialized for directing calcium away from the arteries and toward the bones.

View goal →
Anti-Aging
Impact
Highest effect
A Goal FitA Strength of SupportC CoverageA+ Formula Quality

This full-spectrum Vitamin K formula delivers a high therapeutic dose of 2600mcg to support both skeletal and cardiovascular health. Vitamin K2 as MK-7 is critical for preventing arterial calcification, a hallmark marker of physiological aging.

Delivered in a lipid-based softgel, this formulation maximizes the absorption of these fat-soluble vitamins. It is a highly effective and meaningfully dosed strategy for maintaining vascular flexibility and long-term bone density.

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Ingredients

IngredientAmount per serving
Vitamin C (Ascorbyl Palmitate)
 10 mg
Vitamin K
2600 mcg
Gluten Free Adults 18–50
Report overview
Vitamin K · 2600 mcg OverallScore86
A+ Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyA+ Value
Super K is a top-tier Vitamin K supplement offering a full-spectrum blend in a bioavailable softgel. It provides exceptional clinical value for individuals targeting bone and arterial health.
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