# Does My Baby Need Vitamin D, Iron or Other Supplements?

> Vitamin D drops, iron, fluoride and B12 for babies and toddlers, and which supplements to skip.

Stage: baby - Topic: Feeding - Page: https://www.askcladle.com/guides/baby/vitamin-d-iron-and-supplements-for-babies

Grounded in: AAP HealthyChildren guidance on vitamin D and iron, the AAP clinical report on iron deficiency in infants and young children, AAP and American Academy of Pediatric Dentistry fluoride guidance, and the Dietary Guidelines for Americans 2020-2025. Summarized in Cradle's own words; none of these sources endorse Cradle. General information, not medical advice.

Reviewed: 2026-11

## TLDR

- Breastfed and partly breastfed babies need 400 IU of vitamin D a day from the first days; formula-fed babies drinking under 32 oz do too.
- Iron stores run low around 4-6 months; use iron-fortified formula and offer iron-rich foods daily from about 6 months.
- Most babies don't need multivitamins or herbal products. Keep iron locked away; call Poison Control (1-800-222-1222) if swallowed.

## Vitamin D

Breast milk is the ideal food, but it's naturally low in vitamin D, and babies should stay out of
direct sun.
- Breastfed and partly breastfed babies: 400 IU of vitamin D a day, starting in the first days.
- Formula-fed babies: formula contains vitamin D. A baby drinking less than about 32 oz (1 liter)
  of formula a day needs a supplement too.
- From age 1, children need about 600 IU a day from milk, food (fortified foods, fish, eggs) or a
  supplement. Ask the pediatrician whether your toddler gets enough.
- Give drops on the nipple, in the cheek, or in a little milk. Drops come in different strengths;
  use only the dropper that came with the product and check the label each time.
- Another option: a breastfeeding parent can take a high-dose vitamin D supplement instead of
  giving the baby drops, but only with their clinician's guidance.

## Iron

Babies are born with iron stores that run low around 4-6 months.
- Formula-fed babies get iron from iron-fortified formula. Low-iron formulas are not recommended.
- From about 6 months, offer iron-rich foods daily: meat, poultry, fish, beans, lentils, tofu, egg
  and iron-fortified cereal. Pair plant iron with vitamin C foods to boost absorption.
- The AAP suggests some exclusively breastfed babies may need an iron supplement from about 4
  months until they eat iron-rich foods. Practice varies; ask at the 4-month visit.
- Preterm and low-birth-weight babies usually need iron drops.
- Around 12 months, doctors check for anemia. More than 24 oz (710 mL) of milk a day raises the risk
  of low iron in toddlers.

## Fluoride

- From 6 months, if your tap water isn't fluoridated or you use well water, ask about a fluoride
  supplement. Don't add one if your water already has fluoride.
- Fluoride varnish at checkups starts with the first tooth. See the toddler teeth guide.

## Plant-based and vegan families

Breastfed babies of a vegan parent need that parent to take vitamin B12, and some babies need B12
drops. Plant-based toddlers need planned sources of B12, iron, zinc, calcium, vitamin D, omega-3
fats and protein. A pediatric dietitian can help build a plan that fits your family's values.

## What babies usually don't need

- Multivitamins, if they're growing well and eating varied foods.
- Herbal products, teas and gripe water, which aren't regulated like medicine.
- Probiotics for healthy babies: evidence is mixed. Ask before trying.
- Protein powders or adult supplements of any kind.

## When to check in

- Ask the pediatrician about vitamin D at the first visit and about iron at 4-6 months.
- Mention pale skin, low energy, or a toddler who drinks lots of milk and eats little.
- Store all supplements, especially iron, locked and out of reach. If a child swallows some, call
  Poison Control at 1-800-222-1222, or 911 if they are very sleepy or vomiting.