Cholecalciferol Granules contain the active ingredient cholecalciferol, which is a form of vitamin D3. It is often used as a dietary supplement to prevent or treat vitamin D deficiency, which can lead to various health problems, including rickets (in children), osteomalacia (softening of the bones), and osteoporosis (reduced bone density) in adults. Vitamin D is a fat-soluble vitamin that plays a crucial role in maintaining bone health, calcium absorption, and overall immune function. Cholecalciferol Granules can be a convenient and effective way to ensure adequate vitamin D intake and support overall bone health and immune function.