Main functions:
① Enhance bone hardness, improve bone density, and prevent rickets in children and rickets in adults.
②. Maintain the normal physiological pulse of cardiac cells.
③ Help blood coagulation, reduce bleeding, soothe the nerves and improve sleep.
(4) Participate in muscle contraction and increase the toughness of soft tissue.
⑤. Repair bone tissue, keep the toughness of bone and the coordination of human movement.
6. Maintain blood calcium concentration and prevent hypertension.