Vitamin D is essential for efficient utilisation of calcium and phosphorous in the body which are vital for the production of strong bones and healthy nervous and immune systems.Ostelin Vitamin D Liquid for Kids is suitable as a prevention/treatment for vitamin D deficiency in those at increased risk. At increased risk are those mothers and children with darker skin, those who avoid sunlight or wear concealing clothing.Vitamin D is important for both lactating women and nursing infants. Infants who are breast-fed may require vitamin D supplementation to maintain adequate vitamin D levels. Vitamin D is needed for optimal bone mineralisation in children especially during times when sunlight exposure is limited.Ostelin contains Vitamin D3 which is the form that is produced naturally in the body. It contains no added sugar and no artificial colours or preservatives.