About this item The Perfect Pair: Vitamins K2 & D3 were simply meant to be together. Most people know the benefits of Vitamin D, but many don’t realize that Vitamin D NEEDS Vitamin K2 to maximize it’s benefits. Strong Bones: This formula not only promotes the proper absorption of calcium with D3, but the correct distribution to your bones where you need it most. Superior Quality Capsules: Laboratory tested, NON-GMO, GLUTEN FREE, & SOY FREE.