Browse/Essential Vitamin
Essential Vitamin

Vitamin K2 (MK-7)

01 / OVERVIEW

What this compound does

WHAT IT DOES

Vitamin K2 helps your body use calcium effectively, which is important for strong bones and healthy blood vessels. It works by activating certain proteins that keep calcium in the bones where it belongs and out of the arteries, helping to prevent heart problems. This vitamin can be particularly beneficial for maintaining bone health as you age.

KEY BENEFITS
Supports strong bones
Promotes heart health
May improve dental health
Aids in calcium absorption
BEST FOR
  • • Older adults looking to maintain bone density
  • • Individuals concerned about cardiovascular health
  • • People with low dietary intake of vitamin K
WHAT TO EXPECT

Users may start to notice benefits in bone and cardiovascular health after several weeks of consistent use. Improvements in overall well-being may also be experienced over time.

WHO SHOULD AVOID THIS
  • • Individuals on blood-thinning medications
  • • People with certain liver diseases
  • • Those with a known allergy to vitamin K
MYTHS & FACTS
Myth: Vitamin K2 is only important for blood clotting.
Fact: While it is essential for blood clotting, vitamin K2 also plays a significant role in bone health and cardiovascular function.
Myth: All forms of vitamin K are the same.
Fact: Vitamin K2 (MK-7) is more effective than K1 for certain health benefits, particularly in bone and heart health.
At a glance
Typical dose
90-180 mcg/day
Evidence
—
Studies indexed1
How it's made

Production details below.

Options to buy

Affiliate links — we may earn a commission at no extra cost to you.

03 / DOSAGE

How much, when

MAINTENANCE

90-180 mcg/day

daily

TIMING

Vitamin K2 (MK-7) — Morning dose

Take with food (meal) for fat-soluble absorption

02 / EVIDENCE

Peer-reviewed studies

  • PMID: 25694037

    Bone/vascular pathways

    Supports vitamin K-dependent proteins in calcium handling.

    B
  • PMID 25694037 · 2015RCT

    Menaquinone-7 supplementation improves arterial stiffness in healthy postmenopausal women. A double-blind randomised clinical trial

    B
  • PMID 37451735 · 2023RCT

    Effects of vitamins K2 and D3 supplementation in patients with severe coronary artery calcification: a study protocol for a randomised controlled trial

    B
  • PMID 32344816 · 2020Narrative Review

    The Relationship between Vitamin K and Osteoarthritis: A Review of Current Evidence

    B
04 / INTERACTIONS

Medicine interactions

  • Warfarin· blood_thinner

    Vitamin K2 can counteract the effects of blood thinners like warfarin.

    → Monitor INR levels closely and consult a healthcare provider.

    HIGH

  • Antibiotics· antibiotic

    Some antibiotics may reduce vitamin K2 levels in the body.

    → Consider supplementation during antibiotic treatment.

    MODERATE

  • Statins· statin

    Statins may affect vitamin K metabolism.

    → Consult a healthcare provider for personalized advice.

    LOW

This page is a reference summary, not a prescription. Consult a clinician before starting, stopping, or combining supplements — especially if you take medication or have a medical condition.