The majority of people do not spend enough time outside for the body to produce enough Vitamin D naturally. It's estimated nearly 1 billion people around the world are deficient in Vitamin D. Supplementing your intake can be vital for bone strength, maintain a strong immune system, ensure optimal heart health, and more. While Vitamin D3 has a wealth of benefits it offers on its own, one should consider taking it with Vitamin K to harness the synergistic benefits these two key vitamins have to offer the body. This pair provides cardiovascular protection by elevating and activating Matrix GLA Protein (MGP), an inhibitor of circulatory calcification, respectively. You can now purchase this pair as a bundle.