There are two forms of vitamin K, K1 and K2. Vitamin K1 can be found in plant foods such as leaf greens while vitamin K2 exists in animal foods and fermented foods. Vitamin K2 MK-4 and MK-7 benefit differently after being absorbed into the body.  Promote blood coagulation to stop bleeding; Promote heart health by preventing calcium build-up in the arteries; Help deliver calcium into bone; Support strong bones and teeth; Improve insulin sensitivity; Support cognitive health; Improve symptoms of varicose veins.