What is Calcium? Calcium is the most abundant mineral in the human body, which contains approximately 1.2 Kg, 99% of which is stored in bones and teeth, with the remaining 1% present in the blood and other bodily tissues. Calcium cannot be absorbed from the digestive system without vitamin D, which is made in the skin in response to sunlight. Vitamin K promotes the uptake of calcium into bone tissue. Many adults receive just half the amount of calcium they require from the diet each day. Calcium supplements are available in a variety of chemical forms, most commonly calcium carbonate, calcium citrate, calcium gluconate and calcium phosphate. The elemental calcium provided varies with chemical form, e.g. calcium carbonate provides 40% elemental calcium, whereas calcium gluconate provides only 9% elemental calcium. What does Calcium do? Calcium is responsible for maintaining healthy bones and teeth. Calcium is important for the maintenance of a healthy heartbeat, the transmission of nervous impulses and the contraction of skeletal muscles. Calcium also promotes healthy blood clotting, healthy blood pressure, and wound healing. In addition, each tablet contains vitamin D3, which can promotes calcium absorption from the small intestine, and vitamin K which can help stimulates the formation of bone tissue. Calcium is needed for the maintenance of normal bones and teeth. Contains added K1 and K2 vitamin and vitamin D3, which contributes to normal absorption of calcium.