Vitamin K is an essential vitamin needed for cardiovascular, bone and liver health. Vitamin K2 is more effective than vitamin K1, the form found in plants, for these specific health effects. There are two effective and popular forms of Vitamin K2: namely MK-4 and MK-7. While MK-4 is the active form of vitamin K2 used by the body and has been used clinically in Japan for decades with good results, MK-7 has also been shown to provide good results at low doses in a sustained-release manner. AOR’s Vitamin K2 provides a 50/50 blend of MK-4 and MK-7 to ensure the best of both worlds.