Doctor’s Best Natural Vitamin K2 MK-7 with MenaQ7 provides the natural form of Vitamin K for optimum bioavailability and delivery to your body. Vitamin K is well-known for its role in the synthesis of several blood-coagulation factors and is also important for formation of strong, healthy bones. MenaQ7 MK-7 is a unique, soy-free, bioavailable form of Vitamin K-2. It plays a critical role in arterial health through its ability to support proper calcium metabolism in blood vessels and arteries. MenaQ7 in this formula is purified from fermented chickpeas, which are naturally rich in Vitamin K2.