First Clinical Trial of a Newly Developed, Low Menaquinone-7, Fermented Soybean Natto in Warfarin-Dependent Patients.

Bacillus subtilis fermented soybeans (natto) contain high vitamin K2 levels, mostly as menaquinone-7 (MK-7), and must be avoided by warfarin-dependent patients. This is the first report which demon...