For parents · AAP and NIH

Vitamin D and Iron for Babies and Kids: Who Needs Them?

Tap your child’s age and what they drink. You will see if your child needs vitamin D, iron, or both.

For parents and caregivers · Nothing you enter leaves this page.

About this tool

This tool tells parents whether their baby or child needs vitamin D drops, iron, or both. Tap your child’s age, whether they drink breast milk, formula or cow’s milk, and whether they were born early.

The American Academy of Pediatrics recommends 400 IU of vitamin D a day for breastfed and partly breastfed babies, starting in the first days of life, and for formula-fed babies who drink less than 32 oz (1 liter) of formula a day. Babies who drink only or mostly breast milk need iron drops from 4 months until they eat iron-rich foods, and babies born early often need iron sooner.

The tool also lists iron-rich foods, explains why too much cow’s milk can cause low iron, and reminds parents to lock up iron and vitamins, which can poison young children.

Common questions

Does my breastfed baby need vitamin D?

Yes. Breastfed and partly breastfed babies need 400 IU of vitamin D every day, starting in the first few days of life. Breast milk has very little vitamin D.

When do breastfed babies need iron?

Babies born on time who drink only or mostly breast milk need iron drops starting at 4 months, 1 mg per kg of weight a day, until they eat iron-rich foods like iron-fortified cereal or meat every day. Your doctor will tell you the exact dose.

Can too much milk cause low iron?

Yes. Toddlers who drink a lot of cow’s milk often eat fewer iron-rich foods. For ages 1 to 2, keep milk to no more than 2 to 3 cups (16–24 oz) a day, and offer foods with iron.

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