Vitamin D in Infancy: What Parents Should Know

Vitamin D has a distinct place in infant nutrition because it helps the body absorb calcium and supports normal bone development. The American Academy of Pediatrics (AAP) recommends 400 IU (10 mcg) of vitamin D each day for infants younger than 1 year.

Why feeding pattern matters

AAP guidance states that breastfed and partially breastfed infants should receive vitamin D supplementation. Infant formula contains vitamin D, so the amount of formula an infant drinks affects whether additional supplementation is needed. Families should discuss their infant’s feeding pattern with the child’s pediatrician when there is uncertainty.

Keep the routine simple

For families using vitamin D drops, follow the labeled serving directions carefully, use the measuring device supplied or specified for the product, and avoid unintentionally duplicating vitamin D from multiple supplements.

After the first birthday

The AAP recommendation increases to 600 IU (15 mcg) of vitamin D daily after age 1. Food, fortified beverages and supplements can all contribute to total intake.

Educational information only. A child’s pediatrician can provide guidance based on feeding history, health conditions, medications and other sources of vitamin D.