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Vitamin

Vitamin K2

Vitamin K2 is a family of fat-soluble menaquinones, made by bacteria and found in fermented foods such as natto and cheese. With K1, it is a main natural form of vitamin K.

Also listed as Vitamin K-2, Vitamin K, Phylloquinone, Menaquinone

Bone & JointEssential HealthCardiovascularOrgan Function

What does a food portion provide?

These NIH table values use the listed portions. 1

Raw spinach

145 µg1 cupK1. 1

Boiled broccoli

110 µg½ cupK1. 1

Natto

850 µg3 ozMainly MK-7, a K2 form. 1

How much is enough?

DGE estimates adequate daily intakes of 70 µg for men and 60 µg for women aged 19 to under 51; from age 51, the figures are 80 and 65 µg. These are total dietary intakes, not supplement doses. 2

Sources

  1. Vitamin K: Fact Sheet for Health Professionals NIH Office of Dietary Supplements