Calcium can help build strong bones and help the heart, muscles, and nerves to function properly. This mineral is one of the important elements in the human body.
In the human body, 99 percent of calcium  exists in bones and teeth in the form of bone salt (called bone calcium), and 1 percent exists in blood, extracellular fluid, muscle, and other tissues in the form of bound or free ions. Bone calcium and blood calcium maintain a dynamic balance.
Calcium preparations are not only an important nutritional and health care product, but also used for rickets in children and osteoporosis in the elderly….