Source of Life Garden Vitamin K2 Caps with Organic Gold Standard Nutrients is the first vitamin K2 supplement made to exacting organic standards. Each easy-to-swallow capsule provides 120 mcg of vitamin K2, the most bioavailable form of this critical bone-health nutrient, as menaquinone-7 from organic natto. Natto is traditionally a fermented soy food, however Source of Life Garden K2 is soy-free because the fermenting organism, Bacillus natto, is grown on non-soy legumes, such as chickpeas and fava beans.