Vitamin D drops for breastfed babies

Do breastfed babies need vitamin D drops?

Yes. The American Academy of Pediatrics recommends 400 IU of vitamin D a day for breastfed and partially breastfed babies, starting soon after birth — ask your pediatrician which product and how much.¹² The CDC and the 2025–2030 Dietary Guidelines give the same advice.³⁴

In practice, that means a daily vitamin D supplement from the first weeks, for as long as your baby is breastfed or getting only part of their milk from formula. Your pediatrician will tell you which product to use and how to give it.

Why breast milk needs a vitamin D boost

Breast milk is the recommended food for the first 6 months, and it contains a natural balance of most vitamins. Vitamin D is the exception: the CDC notes that breast milk usually doesn’t provide all the vitamin D a baby needs.¹³ The NIH lists breastfed babies among the groups most at risk of low vitamin D.⁵ USDA reference data put mature breast milk at about 3 IU per 100 g — roughly 20 IU in 24 oz, against a daily target of 400 — though real levels vary.¹²

Vitamin D helps children build strong bones and prevents rickets, a softening of the bones that can affect growing children.³ The AAP raised its recommendation to 400 IU a day for all infants in 2008, after cases of rickets from low vitamin D and limited sun exposure were still being reported in the United States.²

Breast milk is still the ideal first food. Vitamin D drops simply fill the one gap it has.

Do formula-fed babies need vitamin D?

Usually not, once they’re drinking enough. Infant formula is fortified with vitamin D, and the CDC says babies who get only formula don’t need a supplement if they drink 32 oz or more a day.³ The 2025–2030 Dietary Guidelines use the same threshold: breastfed babies, and babies drinking less than 32 oz of formula a day, should get a daily 400 IU supplement.⁴

If your formula-fed baby drinks less than that, they need the supplement too.³⁴ An older AAP parent page uses a lower cut-off of 27 oz.¹ We follow the CDC and the current Dietary Guidelines at 32 oz, but the practical answer is the same either way: if your baby drinks less than about a quart of formula a day, ask your pediatrician about drops.

If you combine breast milk and formula, your baby should have the supplement.³

Why sunlight isn’t the answer

Skin makes vitamin D in sunlight, but that’s not a safe way to cover a baby’s needs. The AAP advises keeping babies younger than 6 months out of direct sunlight, using shade, a stroller canopy and covering clothing instead.⁶ Its 2008 report explains why sun isn’t relied on: a safe amount of sun for making enough vitamin D isn’t easy to judge for any one child, and more sun exposure may raise the risk of skin cancer.²

That’s why the recommendation is a daily supplement rather than time outdoors.¹

Vitamin D drops with iron: who decides?

Iron is a separate decision, and it belongs to your pediatrician. In June 2026 the AAP updated its iron guidance: prevention now includes iron supplementation for exclusively breastfed babies by 6 months of age, and early iron for babies born preterm.⁷⁸ The CDC says standard iron-fortified formula meets formula-fed babies’ iron needs for the first year.¹¹ The Dietary Guidelines put it simply: some infants require iron supplementation, so talk with your health care professional.⁴

Combined vitamin D and iron drops exist, but whether your baby needs iron at all, which product to use and how much are questions for your pediatrician — don’t switch products or add iron on your own. Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6.⁹ For food sources of iron, see iron-rich foods for babies.

Giving drops safely

• Use only what your pediatrician recommends. Vitamin D toxicity is almost always the result of too much from supplements, and there’s an upper limit on daily intake for every age.⁵
• Use the dropper or dispenser that comes with the product, and keep the bottle out of reach.
• Don’t double up. Check with your pediatrician before adding a multivitamin or a second product that also contains vitamin D.

Vitamin D from food after 6 months

Once your baby starts solids at about 6 months, some foods add vitamin D: fish like salmon or light canned tuna, eggs, and vitamin D-fortified yogurt and cereals.³ Avoid fish high in mercury, such as shark, swordfish, king mackerel and bigeye tuna.¹⁰ Cow’s milk is a good vitamin D source later, but not as a drink before 12 months.³

At 12 months, the recommended intake rises to 600 IU a day.¹³ Ask your pediatrician at the 1-year checkup whether your toddler still needs a supplement, especially if they’re still breastfeeding. For what comes next, see how much milk a toddler should drink.

Questions to ask at your baby’s checkup

Bring these to your next visit — your pediatrician can answer them for your baby specifically:

• Which vitamin D product should we use, and how much?
• My baby gets some formula — do they still need drops, and until when?
• Does my baby need iron as well, and if so, should it be a separate product or a combined one?
• Should we keep giving vitamin D after the first birthday?

When to talk to your pediatrician

Once your baby turns 1, the question shifts from drops to food — see whether toddlers need vitamins.

Common questions