The Department of Health recommend that all infants and children under 5 years should take daily vitamin D in the form of drops 1 (unless infants are receiving infant formula as this is fortified with vitamin D). Vitamin D deficiency impairs the absorption of dietary calcium and phosphorus, which can give rise to bone problems such as rickets in children, and bone pain and tenderness as a result of osteomalacia in adults.
- Royal College of Paediatrics and Child Health. Guide for Vitamin D in Childhood. October 2013.