* Super Value! * Vitamin K2 as MK-7 * Derived from Natto * Promotes Bone and Cardiovascular Health * Dietary Supplement Jarrow Formulas MK-7 is made via fermentation by Bacillus subtilus natto. MK-7 (Menaquinone-7) is an enhanced bioactive form of vitamin K2 from Natto that is ten times better absorbed than K1 from spinach. MK-7 is responsible for the carboxylation of specific bone proteins needed for building bone. Also, MK-7 promotes cardiovascular health by helping to maintain arterial elasticity.