What makes Health4All Vitamin K2 MK7 supplement so special? HIGH STRENGTH FORMULATION Each tablet delivers 200mcg of Vitamin K2 MK7 - optimal strength to keep high level of this essential nutrient. HIGH BIOAVAILABILITY Best absorbable natural forms: K2 Menaquinone-7 from natto fermentation deliver superior bioavailability. PHARMACEUTICAL GRADE We use only the highest quality pharmaceutical grade material which has been extensively tested for strength and purity. RAPID ABSORPTION Vitamin K2 MK7 tablets are non-coated, immediate release product. This ensures optimal absorption. Recommended for: Is vitamin K2 natural? Yes. Our K2 MK7 comes from bacterial fermentation on natto. Is K2 trans- or cis- isomers? Since we use natural vitamin K2 from natto fermentation, it is all-trans biologically active form.