Dietary Supplement Bone Support Foundational Gluten Free Basic Bone Nutrients features calcium, magnesium, vitamin D, and vitamin K combined in one product. Half of adults who are 50 and older are at risk for breaking a bone because they have low bone density. The unique formula in Thorne's Basic Bone Nutrients combines four highly-researched nutrients that are essential for bone health. The calcium and magnesium ingredients are optimally absorbed forms that result in a higher concentration of these minerals per capsule. Thorne's vitamin D ingredient (as vitamin D3) is free from the preservatives and lactose diluents that are used in the vitamin D products in many other brands. And Thorne uses the most well-researched form of vitamin K2 available – MK-7 as MenaQ7. A primary advantage of including both vitamin K and magnesium is they help keep calcium in the bones rather than in the blood vessels and other soft tissues. Vitamin K pairs up with vitamin D, similar to the way in which magnesium pairs up with calcium. Whenever vitamin D and calcium are purchased by a consumer or prescribed by a practitioner, then vitamin K and magnesium should likewise be included in the daily protocol. Thorne has chosen to use DiCalcium Malate and DiMagnesium Malate for Basic Bone Nutrients because these forms of calcium and magnesium exhibit the synergistic effect of optimal absorption and optimal concentration. This is because two molecules of calcium or magnesium are bound to one molecule of malate. The vitamin K2 in Basic Bone Nutirients – MenaQ7 – is soy-free and has been clinically studied and found to be effective for supporting bone health at uses as low as 45 mcg daily.