@vgkime so MK7 has a longer half life (I think that’s the correct term). So therefore it will stay in body longer than MK4 and what you don’t need will be stored in your liver. There in lies my problem with taking large dosages of fat soluble vitamins. You don’t excreate the excess. How do you know when your levels are adequate? There is no blood test for Vitamin K (or A either I believe). I can so overthink something. 😂