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Next Generation Doctor-Formulated Vitamin D Complex Now with 1100 mcg of Vitamin K2 The Vitamin D Revolution Vitamin D's influence on key biological functions vital to one's health and well-being mandates that vitamin D supplementation can no longer be ignored by individuals striving to achieve and maintain a greater state of health.* Formulated by John Cannell MD†, Purity’s new Vitamin D Complex is a blend of Vitamin D with several targeted nutrients which complement many of the vitamin D’s desirable health benefits.* Working in combination with Vitamin D, Vitamin K2 helps keep calcium in the right places, like the bones.* Vitamin D with Extra Vitamin K2 One of the 13 essential vitamins, vitamin K is required for synthesis of proteins that cause blood to clot properly. Vitamin K-dependent proteins have other important functions beyond this survival mechanism, however. Chief among these functions is regulation of calcium storage in bone. At the same time, vitamin K helps prevent excessive calcium build-up in arteries. Simply put, Vitamin K helps keep bones strong and arteries flexible. Vitamin K occurs in two major forms, designated as K1 and K2. Vitamin K1 or “phylloquinone, is commonly found in food and supplements. K1 is used in the liver as a blood-clotting factor. Vitamin K2 is a group of compounds known collectively and “menaquinones.” Two of these, MK-4 and MK-7, are directly involved in calcium regulation, making them vitally important for bone and cardiovascular health. For this reason Dr. Cannell’s Vitamin D with Vitamin K includes MK-4 and MK-7. Both are safe at doses many times higher than the RDI of 80 mcg.