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Vitamin K-2 100 mcg

NOW
4.8
(15468 ratings)
Vitamin K 100 mcg
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Score88

An economical bulk supply of Vitamin K2 MK-4 and alfalfa for consistent bone and heart health.

How scoring works
Quantity:250 Capsule(s)(250 servings)
Goals:
General Health

Score 88

An economical bulk supply of Vitamin K2 MK-4 and alfalfa for consistent bone and heart health.

How scoring works
$18.19($0.07 per serving)
Vitacost
$ 22.85
Daily Vita
$ 20.30
iHerb
$ 21.42
Walmart
$ 18.95
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Analysis

This high-count bottle provides the MK-4 form of Vitamin K2 paired with alfalfa powder for extra plant nutrients. It is an excellent choice for individuals who want a long-term supply of this essential vitamin at a low cost. MK-4 helps with the distribution of calcium, supporting bone density and vascular flexibility.

Because it is a large bottle, it is convenient for a consistent daily routine without having to reorder often. The capsules are simple and provide foundational support for your cardiovascular and skeletal systems. It works best when taken with food to help the fat-soluble K2 get into your system.

Pros

  • Great value with 250 capsules
  • Bioactive MK-4 subtype
  • Natural alfalfa base
  • Supports healthy mineral levels
  • Inexpensive daily support

Cons

  • MK-4 form requires more consistent use
  • Not as long-lasting as MK-7
  • Capsule format lacks its own fat base

Warnings

  • Consult your doctor if you take anticoagulants
  • Take with a meal for better results
  • Store in a cool, dry place

Nutrient quality

67 High impact

MK-4 is bioactive but delivered at a maintenance dose that may be insufficient for targeted therapeutic needs. The lack of a built-in lipid base suggests optimal absorption is reached when taken with dietary fats.

Ingredient transparency

97 Highest impact

Ingredient forms and amounts are clearly specified, ensuring consumers understand the difference between MK-4 and other subtypes. All serving and usage information is presented in a straightforward and easy-to-follow manner.

Customer satisfaction

92 Highest impact

High review counts and consistently strong ratings indicate a very high level of trust for this bulk-sized supplement. Users appreciate the reliability and the cost-effective nature of the 250-capsule format.

Value for money

96 Highest impact

Exceptional cost efficiency is provided by the bulk format, making it one of the most affordable ways to supplement Vitamin K2. The low price per serving justifies the maintenance-level dosage for many consumers.

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Goals

Impact
High effect
B Goal FitC Strength of SupportC CoverageA- Formula Quality

Vitamin K2 as MK-4 combined with alfalfa powder supports foundational skeletal and cardiovascular resilience. This essential vitamin plays a key role in maintaining calcium balance and systemic health for daily vitality.

Providing a consistent maintenance amount of Vitamin K2 appears well-aligned with long-term wellness goals. While MK-4 is less long-acting than MK-7, this formulation meaningfully contributes to systemic resilience and filling nutritional gaps.

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Impact
Moderate effect
B- Goal FitC- Strength of SupportD- CoverageC Formula Quality

This bulk-sized offering provides Vitamin K2 in the MK-4 form alongside alfalfa powder. While K2 assists in mineral deposition, the 100 mcg dosage for the MK-4 isomer is considerably below levels shown to be effective in clinical research for bone health.

Support for bone density is limited by the absence of foundational minerals like calcium or signaling cofactors like Vitamin D3. The inclusion of alfalfa provides trace elements but does not meaningfully impact skeletal structure or remodeling at this quantity.

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Impact
Moderate effect
C+ Goal FitC- Strength of SupportF CoverageB- Formula Quality

Vitamin K2 in the MK-4 form contributes to maintaining healthy blood vessels by regulating calcium distribution. This mechanism is supportive of arterial flexibility and long-term cardiovascular structural integrity.

Compared to the MK-7 subtype, MK-4 is less bioavailable and requires higher dosing for sustained circulatory benefits. The 100 mcg dose in this capsule may be insufficient for achieving therapeutic targets related to preventing vascular calcification.

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Impact
Moderate effect
C Goal FitC- Strength of SupportD CoverageB- Formula Quality

NOW Vitamin K-2 (bulk size) features the MK-4 form of Menaquinone paired with a supportive alfalfa base. While beneficial for bone metabolism, MK-4 lacks the biological persistence required for optimal vascular protection as one ages.

The large quantity provides good value for a maintenance routine focused on skeletal integrity. However, it fails to provide the multi-system support needed to effectively address cellular and metabolic aging drivers.

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Impact
Moderate effect
C+ Goal FitC- Strength of SupportF CoverageC+ Formula Quality

This Bulk supplement contains 100mcg of Vitamin K2 in the MK-4 form to support arterial health. While MK-4 is a bioactive form of Vitamin K2, it has a much shorter half-life in the body compared to the MK-7 subtype.

Providing MK-4 may contribute to managing calcium distribution and protecting blood vessels. However, its lower biological longevity and the dry capsule format may limit its clinical effectiveness for long-term cardiovascular support.

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Ingredients

IngredientAmount per serving
Vitamin K2 (Menaquinone-4)
100 mcg
Alfalfa powder
250 mg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Vegetarian
Report overview
F Active Ingredient Quality & BioavailabilityD- Dose, Safety & Label TransparencyF Value
This bulk-sized supplement uses the MK-4 form of Vitamin K2, which requires much higher doses than MK-7 to maintain clinical effectiveness. It is an extremely cheap option but lacks the biological longevity of more advanced K2 forms.
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