What Vitamins Should Kids Take Daily? | Age Guide & RDA

For the full breakdown, see our best Children’s Vitamin guide.

A parent pacing the pharmacy aisle, puzzled by rows of cartoon-labeled bottles, has one honest question: does my child actually need these? For the majority of healthy US children eating a well-balanced diet, the answer from both the American Academy of Pediatrics and the USDA’s Dietary Guidelines is clear — skip the multivitamin. The single exception that applies almost universally is vitamin D, and even that one has rules depending on age, feeding method, and diet. Here is exactly what experts recommend, broken down by age and situation.

The One Vitamin Every Kid Probably Needs

Vitamin D is the only supplement the AAP recommends for nearly all children, simply because food sources are limited and sun exposure is unreliable. For infants under one year, give 400 IU (10 mcg) daily — breastfed babies need liquid vitamin D drops from birth because breast milk contains very little. Formula-fed infants drinking over 32 ounces (roughly one liter) of fortified formula daily do not need additional vitamin D. For all children over age one, the daily target rises to 600 IU (15 mcg). A standard over-the-counter drop or chewable that hits this number is usually sufficient.

When a Multivitamin Actually Makes Sense

Certain situations genuinely warrant a broader supplement. Breastfed infants need vitamin D from birth, as noted. Children with restricted diets — picky eaters who avoid whole food groups, vegan households, or kids on elimination diets for allergies — may benefit from a daily multivitamin providing 100% of the Daily Value for most vitamins and minerals. Adolescent girls who have begun menstruating sometimes need extra iron — roughly 15 mg daily if dietary intake falls short. Premature infants typically receive a prescribed multivitamin with iron from the NICU before discharge. For everyone else, a well-rounded plate beats a pill.

Key Nutrients by Age: What the Daily Targets Look Like

Knowing the numbers helps you spot genuine gaps. Calcium needs jump sharply during puberty — ages 9 through 18 require 1,300 mg daily, and intake during these years is most critical for building peak bone mass. Toddlers ages 1 to 3 need 700 mg; children ages 4 to 8 need 1,000 mg. Iron requirements differ by age and sex: general childhood needs run 7 to 10 mg daily, teen boys need about 11 mg, and menstruating teen girls need roughly 15 mg. Vitamin E, vitamin C, and B12 all have age-specific targets that a balanced diet normally meets. For a quick reference, the Linus Pauling Institute’s children’s nutrition guide breaks these down by life stage.

Three Safety Rules That Matter Most

First, never exceed the RDA. Fat-soluble vitamins A and D and the mineral iron can accumulate to toxic levels if over-supplemented — more is absolutely not better. Second, avoid unnecessary additives: gummy vitamins often pack added sugar and artificial dyes that undercut the health benefit. When in doubt, a pediatrician can check actual deficiency with a simple blood test — no guessing required.