Hi Dee Vitamin D3 50,000 Iu Capsules 8'S Is A High-Potency Vitamin D Supplement Designed To Support Bone Health, Calcium Absorption, And Immune System Function. It Provides A Concentrated Dose Of Cholecalciferol (Vitamin D3), Ideal For Addressing Severe Deficiencies. Active Ingredient: Cholecalciferol (Vitamin D3) 50,000 Iu: A Fat-Soluble Vitamin Essential For Maintaining Strong Bones, Regulating Calcium And Phosphorus Levels, And Supporting Immune Function.