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Types of Natto / Vitamin K2 (for Arteries): Forms & Bioavailability

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Forms Comparison

FormBioavailabilityBest For
MK-7 (Menaquinone-7) CapsulesHighBest form for arteries — longest half-life (~72 hours), ensures consistent MGP activation with once-daily dosing
MK-4 (Menaquinone-4) CapsulesLow (short half-life)Bone-focused — requires 3x daily dosing (half-life ~6 hours); less practical for arterial health
Nattokinase Capsules (2000 FU)ModerateBlood flow support — standardized fibrinolytic enzyme units; separate from vitamin K2 content

MK-7 (Menaquinone-7) Capsules

Bioavailability: High. Best for: Best form for arteries — longest half-life (~72 hours), ensures consistent MGP activation with once-daily dosing.

MK-4 (Menaquinone-4) Capsules

Bioavailability: Low (short half-life). Best for: Bone-focused — requires 3x daily dosing (half-life ~6 hours); less practical for arterial health.

Nattokinase Capsules (2000 FU)

Bioavailability: Moderate. Best for: Blood flow support — standardized fibrinolytic enzyme units; separate from vitamin K2 content.

Full Natto / Vitamin K2 (for Arteries) Guide

References

  1. (). Menaquinone-7 supplementation improves arterial stiffness in healthy postmenopausal women. A double-blind randomised clinical trial. Thrombosis and Haemostasis. DOI
  2. (). Dietary intake of menaquinone is associated with a reduced risk of coronary heart disease: the Rotterdam Study. Journal of Nutrition. DOI
  3. (). A single-dose of oral nattokinase potentiates thrombolysis and anti-coagulation profiles. Scientific Reports. DOI