Is it worth giving my child a multivitamin?
For most healthy kids eating a varied diet, a daily multivitamin isn't necessary. The main exceptions are vitamin D (and sometimes iron) for infants, and case-by-case needs for picky eaters or restricted diets.
Pediatric guidelines focus on specific nutrients like vitamin D and iron rather than routine all-in-one multivitamins for healthy children.
Good
Based on a national pediatric guideline body (AAP/HealthyChildren.org) plus CDC surveillance data and one nutrient-gap analysis; no large RCTs test routine multivitamin use in healthy children specifically.
What the evidence says
The American Academy of Pediatrics is fairly clear on this one: healthy children eating a normal, balanced diet don't need vitamin supplements beyond the recommended daily amounts. Megadoses of some vitamins can even cause side effects like nausea or headaches.
There are specific exceptions, though. Breastfed babies need vitamin D drops, and sometimes iron, because breast milk alone doesn't provide enough. Kids on restrictive diets (like vegan diets), picky eaters, or those with certain medical conditions may also benefit from targeted supplements, ideally chosen with your pediatrician's input.
Interestingly, research looking at what's actually in children's multivitamins found many products are heavy on nutrients kids already get plenty of from food, while sometimes falling short on ones like vitamin D, and some exceed safe upper limits for things like folic acid. So a generic multivitamin may not target your child's real gaps.
Bottom line: if your child eats a reasonably varied diet, food first is the better strategy. If you're worried about a specific nutrient gap or your child is a very selective eater, that's worth a conversation with your pediatrician rather than reaching for a bottle on your own.
Sources
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Guideline
Where We Stand: Vitamin Supplements for Children
HealthyChildren.org (AAP), 2024
AAP: healthy kids on balanced diets don't need extra vitamins beyond RDA.
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Guideline
A Vitamin a Day
HealthyChildren.org (AAP), 2024
AAP: most children don't need vitamin supplements at all.
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Guideline
Where We Stand: Vitamin D & Iron Supplements for Babies
HealthyChildren.org (AAP), 2022
AAP: breastfed infants need vitamin D and, after 4 months, iron.
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Guideline
Dietary Supplements for Toddlers
HealthyChildren.org (AAP), 2024
AAP: restrictive diets like vegan may need targeted supplements.
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Guideline
Dietary Supplement Use in Children and Adolescents Aged 2–19 Years
CDC (MMWR), 2020
CDC: few supplements are recommended for kids, only in specific situations.
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Randomised trial
Do Multivitamin/Mineral Dietary Supplements for Young Children Fill Critical Nutrient Gaps?
PubMed, 2021
Analysis: many child multivitamins miss key gaps, exceed limits on others.
✓Reviewed by CH, MD, FRCPC
Reviewed by a specialist physician certified by the Royal College of Physicians and Surgeons of Canada, who has read this answer against the sources listed above and confirmed it reflects them. That is not medical advice about your child. How we review
Answer checked July 24, 2026