Coral Calcium combined with Magnesium and Vitamin D3 is a convenient way to get three of the best bone health supplements together in one easy supplement. Coral calcium is popular because it not only contains calcium but also naturally-occurring trace minerals like boron and strontium which are important for bone health. Calcium works together with mineral nutrients such as magnesium to create bonds that form our bone matrix. This unique structure allows bones to be incredible strong yet also somewhat flexible and resilient. Vitamin D3 also plays an important role in bone health in that it may support a healthy alignment between the two minerals since it can help move excess calcium into bones. Recognizing the essential role of calcium in bone health, the FDA has even approved the use of calcium supplements in the prevention of osteoporosis. According to the FDA, bone growth, density and strength are greatly dependent on a plentiful supply of calcium within the body, and our diets do not typically provide enough. Mason Natural supplements are produced in a GMP certified facility and laboratory tested for purity.