30ml Cholecalciferol 400IU Drops are a dietary supplement that contains 30ml of liquid solution per bottle. It is formulated with cholecalciferol, which is a type of vitamin D3, an essential nutrient that plays a crucial role in maintaining healthy bones and teeth, as well as supporting the immune system. 30ml Cholecalciferol 400IU Drops allow for easy and precise dosing, making it suitable for infants, children, and adults alike. These are designed to be taken orally, and the liquid form allows for fast absorption by the body.