Background: The effects of vitamin D on the skeletal system, biological metabolism, and immune system function are well shown. Cholecalciferol (vitamin D2) ergocalciferol (vitamin) 2 major types D. Vitamin D3 deficiency is worldwide intoxication induced by it very rare. Conclusion: involved in calcium hemostasis. acute hypercalcemia blood pressure were established. Hypercalcemia can elevate pre...