Vitamin K as MK7

Vitamin K2 (Menaquinone-7 / MK-7) – Highly absorbable vitamin used to support bones and blood clottingVitamin K2 in the form of menaquinone-7 (MK-7) is a highly bioavailable and long-acting form of vitamin K. In dietary supplements, it is used to contribute to the maintenance of normal, strong bones and to support normal blood clotting as part of a balanced lifestyle.Characteristics, Origin, and CompositionVitamin K consists of two main forms: vitamin K1 (found primarily in leafy greens) and vitamin K2 (often of bacterial origin). The specific form MK-7 is frequently derived through a natural fermentation process (such as using the bacterial culture Bacillus subtilis subsp. natto, based on the traditional Japanese food nattō). Among all K vitamins, MK-7 stands out because it reaches extrahepatic tissues (tissues outside the liver) exceptionally well and remains circulating in the bloodstream significantly longer. This makes it highly efficient at activating certain proteins, like osteocalcin, which are essential for binding calcium into the bone matrix.Use in Dietary SupplementsVitamin K2 (MK-7) is commonly used:In bone support formulas, almost always paired with vitamin D3 and calcium, as they work synergistically in the absorption and utilization of minerals in bone tissue.In cardiovascular complexes, due to K2’s role in guiding calcium distribution within the body.In general multivitamins designed for older adults or menopausal women, for whom maintaining bone density is particularly relevant.The dosage typically ranges from 45 to 200 micrograms (mcg) per day. Because it is a fat-soluble vitamin, it is often supplied in oil-based softgels, in liquid drops, or recommended to be taken with a meal containing some fat to ensure optimal absorption.Everyday Use and Well-BeingWhen used in appropriate amounts, vitamin K2 (MK-7) is an excellent and efficient supplement for maintaining a healthy skeleton. Vitamin supplements do not replace proper nutrition or medical treatment. However, because vitamin K is directly involved in blood clotting, extreme caution is required for individuals taking specific blood thinners (such as coumarin derivatives); they should always consult a doctor first, as vitamin K2 can interfere with the effectiveness of these medications.