Faulding Kids Vitamin D Drops Supports the development and maintenance of strong, healthy bones. Faulding Kids Vitamin D Drops may assist in the prevention of Vitamin D deficiency when dietary intake is inadequate. Vitamin D helps to maintain serum calcium and phosphorus levels, which is critical for the normal development of bones and teeth. It is important for the development and maintenance of strong, healthy bones Vitamin D supports the health and function of the immune system, the nervous system and supports cardiovascular health. It is mainly produced in our skin by a reaction that requires sunlight. People who limit their exposure to sunlight may have an increased need for vitamin D supplementation.