To prevent rickets and vitamin D deficiency in healthy infants and children, 200 international units (IU) of vitamin D is needed daily.
Who needs this? All breastfed infants unless they are weaned to at least be drinking 500 mL per day of vitamin –D fortified formula or milk. All nonbreastfed infants who are ingesting less than 500 ml per day of vitamin D fortified formula or milk.
Children and adolescents who do not get regular sunlight exposure, do not ingest at least 500 mL ( 2 1/2 cups) per day of vitamin D-fortified milk, or do not take a daily multivitamin supplement containing at least 200 IU of vitamin D.