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Can i give ibuprofen to my 5 month old?

No, Canadian and international guidelines say not to give ibuprofen to a 5-month-old without first checking with a doctor or nurse practitioner. Ibuprofen is only considered routine and approved once a baby turns 6 months old.

Acetaminophen (Tylenol) is the usual over-the-counter choice for babies under 6 months with fever or pain.

Strength of evidence

Strong

Multiple Canadian clinical guidelines (Caring for Kids, HealthLink BC) agree with US guidelines (AAP, FDA) that ibuprofen is not approved or well-tested below 6 months, making this a consistent, high-quality recommendation.

What the evidence says

Ibuprofen (brands like Advil or Motrin) is not recommended for babies younger than 6 months unless a doctor or nurse practitioner has specifically told you to use it. Health experts in Canada and the US agree on this age cutoff.

The reason is simple: there isn't enough safety testing in babies this young. Ibuprofen can be harder on the kidneys and stomach, and young babies who are dehydrated (from fever, vomiting, or not drinking enough) may be at higher risk of side effects.

For a 5 month old with fever or pain, acetaminophen, known as Tylenol, is the medicine Canadian guidelines suggest instead. It has a longer safety record in young infants. Always dose it based on your baby's weight, using the syringe or dropper that comes with the medicine.

Some research suggests ibuprofen may actually work a bit better at lowering fever than acetaminophen in older babies and toddlers, and one study found it can be used safely from 3 months in some cases under medical guidance. But this is not the same as saying it's fine to give on your own at 5 months without checking first.

If your baby has a fever, is very fussy, isn't feeding well, or you're just unsure what to do, it's always fine to call your doctor, pediatrician, or a health line for advice before giving any medicine.

Sources

✓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 August 19, 2026

Educational information only. Not medical advice, not a diagnosis, and no doctor-patient relationship is created by using this. Founded Parent has not examined your child and does not know their history, so this may not apply to you. In an emergency, call your local emergency number. What Founded Parent cannot do

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