Vitamin K2 (MK-7)

Also known as: menaquinone-7, MK-7, K2

BBuilding Evidence72107 studies referenced

Latest evidence update: 2026-12-13

Musculoskeletal health Cardiovascular health

Common dosage

100-200mcg daily

Description

Directs calcium to bones and teeth, away from arteries. Essential companion to vitamin D3 supplementation.

Safety & interactions

Contraindicated with warfarin. Safe for most people at recommended doses.

Check interactions with other supplements→

Expected outcomes

Outcome estimates are derived from published research and represent population-level associations, not guaranteed individual results. Consult a healthcare professional before making decisions based on these estimates.

Supports these goalsvia evidence graph

Metabolic HealthC1 study row
metabolic flexibility

Goals matched from this supplement's aggregated claim evidence using the same logic that drives the quiz picker.

What the research shows

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Fermented milk may help your body absorb vitamin K2 and other fat-soluble vitamins more effectively when taken together

moderate evidence1 study:Journal of nutritional science and vitaminology (2026)

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Vitamin K2 supplementation may support muscle recovery after intense resistance exercise

emerging evidence1 study:Medicine and science in sports and exercise (2026)

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Order Vitamin K2 (MK-7)

Recommended: 100-200mcg daily

Broader research on Vitamin K

Vitamin K2 (MK-7) is a form of Vitamin K. The studies above are specifically about Vitamin K2 (MK-7); broader vitamin k research differs in dose and bioavailability and lives on the parent page.

See all Vitamin Kresearch →

Protocols featuring Vitamin K2 (MK-7)

Cardiovascular Health ProtocolAAdequate Evidence

Questions about Vitamin K2 (MK-7)

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Referenced studies (107)

ProtocolEngine provides general health information based on published research. This is not medical advice. Consult a healthcare professional before starting any supplement or health protocol.