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K-2 with Nattokinase

4.7
★ ★ ★ ★ ★
(69 ratings)
Vitamin K 50 mcg
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Score66
A maintenance-dose MK-7 softgel with nattokinase, limited by missing enzyme activity and significant anticoagulation-fit concerns.
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Softgel
Quantity:30 Softgel(s) • (30 servings)
Goals:

Score 66

A maintenance-dose MK-7 softgel with nattokinase, limited by missing enzyme activity and significant anticoagulation-fit concerns.
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$16.19($0.53 per serving)
iHerb
$ 16.19
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Analysis

MK-7 supports calcium-handling proteins, while nattokinase is included for a separate circulation-oriented pathway. Softgel delivery suits the fat-soluble vitamin.

The K2 amount is modest, and nattokinase is listed only by weight without enzyme activity units. That prevents a reliable potency assessment of the enzyme component.

The product fits only adults who specifically want this pairing and have screened bleeding and medication risks. A standalone MK-7 product is easier to manage for basic vitamin K2 use.

Who is it for
  • Adults specifically seeking K2 with nattokinase
  • Users not taking medicines that affect clotting
  • People who prefer softgel delivery
Best for
  • Maintenance MK-7 intake
  • Combined calcium-handling and circulation support
  • Focused two-ingredient use

Pros

  • Preferred MK-7 subtype
  • Softgel suits vitamin K absorption
  • Compact formula

Cons

  • K2 amount is maintenance-level
  • Nattokinase activity units are missing
  • Only moderate value

Warnings

  • MK-7 can oppose warfarin and related vitamin K antagonist medicines
  • Nattokinase may increase bleeding risk with anticoagulant or antiplatelet medicines
  • Discuss perioperative use with the surgical team because nattokinase may affect clotting

Nutrient quality

67 High impact

Menaquinone-7 is well regarded, while nattokinase quality cannot be judged without activity units, and vitamin K2 is modest, and nattokinase potency is unknown despite a listed weight. Nattokinase may increase bleeding risk when combined with anticoagulant or antiplatelet medicines, while the focused formula avoids unrelated active extras.

Ingredient transparency

74 High impact

Both active weights are listed, but nattokinase enzyme activity is not disclosed. No proprietary blend hides active doses, while softgel materials and inactive ingredients are not provided.

Customer satisfaction

63 Moderate impact

The supplied aggregate satisfaction metric is strong, and the feedback volume offers some support but is less robust than heavily reviewed alternatives. No review excerpts were provided, so recurring complaints and purpose-specific experiences cannot be checked.

Value for money

56 Moderate impact

A focused pairing adds some value, but unknown nattokinase activity weakens the quality case. The serving is relatively costly for modest vitamin K2 and unverified enzyme potency, while the formula avoids low-value extras.

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Ingredients

IngredientAmount per serving
Vitamin K-2 (Menaquinone-7)
50 mcg
Nattokinase
100 mg
Adults 18–50
Report overview
B Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyC Value

Generic MK-7 supplies the preferred form, while the 50 mcg amount fits maintenance rather than the higher target range. Softgel delivery may aid fat-soluble absorption, but the carrier oil is not identified. The midrange serving cost gives only moderate value at a maintenance dose.

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