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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 do K1, MK-4 and MK-7 mean?

K1 is phylloquinone; MK-4 and MK-7 are menaquinones within K2. They identify different forms, not a ranking of proven health benefits. 1 2

A D-and-K product is still a combination

Trials of combined vitamins K and D cannot tell you that adding K to every vitamin D product is necessary. Their bone-density findings are specific to the studied interventions and populations. 3

Sources

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