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Vitamin K2

Also called: Menaquinone (MK-7, MK-4)

Helps direct calcium into bones and teeth rather than arteries. Often paired with vitamin D3.

Supplements can interact with medications and aren't right for everyone, especially during pregnancy or breastfeeding, or with a chronic condition. Ask your provider before you start.

Studied for

  • Bone health
  • Pairing with higher-dose vitamin D
  • Heart and artery health

Found naturally in

  • Natto (fermented soybeans)
  • Hard and aged cheeses
  • Egg yolks
What variations of vitamin K2 exist?Our top pick, what to skip, and how to read the label

Label red flags

  • Says 'vitamin K2' without naming MK-7 or MK-4

Check with a provider

  • Taking warfarin or another vitamin K antagonist. Avoid K2 unless your prescriber approves.
  • A clotting disorder

Supplements that contain it

2 products in Dr. Lesher's dispensary list vitamin k2 on the label.

Check with your provider before taking any of these, especially if you're pregnant or take medications.

Parts of the body it affects

Explore what each area does and the conditions that can affect it.

Illustration of a healthy joint with cartilage and joint lining

Joints

Joints let your bones move smoothly. Swelling and morning stiffness, rather than ache alone, can point to inflammation.

Illustrations: Servier Medical Art, CC BY 4.0

Dr. Lesher, ND

Ready to find the root cause?

Dr. Lesher is a Naturopathic Doctor who focuses on autoimmune and chronic conditions in women. Since 2020, she's helped hundreds of patients stop managing symptoms and start healing.

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