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Vitamin K1 (phylloquinone): benefits, dietary sources and requirements

11/09/2026

Vitamin K1 is best known for its role in blood clotting, but it also helps maintain healthy bones. Discover the benefits of vitamin K1, the foods richest in it and the recommended daily intakes.

✦ Key takeaways Key points from this article
  • ✓Vitamin K1 (phylloquinone) is the main form of vitamin K obtained from food.
  • ✓It contributes to normal blood clotting and the maintenance of normal bones.
  • ✓Green leafy vegetables are the best sources of vitamin K1.
  • ✓Its absorption is enhanced when consumed with a small amount of fat.
  • ✓People being treated with an anti-vitamin K anticoagulant must maintain a regular intake of vitamin K and should not alter this without medical advice.

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