Jarrow Formulas MK-7 90 mcg is a bioactive vitamin K2 supplement in the form of menaquinone-7 softgels. This product is naturally made via fermentation by Bacillus subtilis subsp. natto and is better absorbed than K1 from spinach. MK-7 has a longer half-life and higher activity than K1, supporting the carboxylation of specific proteins needed to build bones and support cardiovascular health. Each softgel contains 90 mcg of vitamin K2, and the product is gluten-free.