Myths vs Facts

Vitamin K · 010

“Vitamin K1 is for blood clotting. Vitamin K2 is for calcium.“

K1 also supports osteocalcin activation in bones, while K2 also plays a role in blood clotting.

It’s not that simple. Vitamin K1 also helps activate osteocalcin in bones [1], while vitamin K2 also plays a role in blood clotting. [5]

Source data

[1] Schurgers LJ et al. Vitamin K-containing dietary supplements: comparison of synthetic vitamin K1 and natto-derived menaquinone-7. Blood. 15 April 2007.

https://www.sciencedirect.com/science/article/pii/S0006497120417008?via%3Dihub

[5] Theuwissen E et al. Effect of low-dose supplements of menaquinone-7 (vitamin K2) on the stability of oral anticoagulant treatment: dose-response relationship in healthy volunteers. Thrombosis and Haemostasis. 11 June 2013.

https://www.jthjournal.org/article/S1538-7836(22)17678-6/fulltext

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