Dfill Drops contains Vitamin D3 (Cholecalciferol) - 400 IU. Cholecalciferol is a form of fat soluble vitamin D used to prevent and treat vitamin D deficiencies. It is also known as calciol. It helps in the absorption of phosphorous and calcium from food and supplements and aids in the proper development and growth of the body. It helps in proper functioning of minerals and fights against calcium deficiency to keep the bones and teeth strong. Dfill Drops helps to prevent and treat vitamin D deficiencies in children. It helps in the development and strengthening of bones in children, and also aids in the overall growth of children.