BioGanix Vitamin K2 MK7 (MenaQ7) for Maximum Bioavailability - Supports a Healthy Heart, Strong Bones and Teeth, Aids Proper Calcium Utilization - 150mcg Single Serving Vitamin K2 as Menaquinone-7 (MK-7) is a more biologically active form than MK-4, studies show it lasts longer in the bloodstream for increased absorption by the body. This is easy to take and doesn't have an aftertaste. I really like this company, they offer a 100% money back guarantee if not satisfied. This is great for your heart, your arteries, and your teeth because it helps calcium go to the right places it's needed instead of clogging up your arteries. My husband has diabetes so I decided to get this to help him and I. Heart disease runs in both of our families and my Mother passed Jan. 3, 015 from congestive heart failure. I've done a lot of research on Vitamin K and it really helps out with the heart, blood, and the calcium in your body. By the way, please don't take too much Vitamin K, that can cause kidney problems, especially if you're on dialysis, liver problems, and could make clotting problems worse. Everything in moderation! If you're diabetic or have heart problems, I recommend the BioGanix Vitamin K2. This is a different form that gives you the most benefits of Vitamin K. You can get it here https://www.amazon.com/BioGanix-Vitamin-MenaQ7-Maximum-Bioavailability/dp/B075MSHFVW