Can I give my baby Tylenol when teeth are coming in?
Yes. Canadian and international pediatric guidelines say an occasional dose of acetaminophen is a safe way to ease teething pain in babies, as long as you dose by weight and follow label limits.
Guidelines also agree that true teething should not cause fever, diarrhea, or prolonged crying, so those symptoms need a doctor's look rather than more acetaminophen.
Good
This is based on consistent recommendations from Canadian (CPS, SickKids, Health Canada) and American (AAP) pediatric guidelines, not from a randomized trial testing acetaminophen specifically for teething pain.
What the evidence says
Yes, you can give your baby acetaminophen, the medicine in Tylenol, when their teeth are coming in. Canadian children's hospitals and the Canadian Paediatric Society say acetaminophen or ibuprofen can be used to treat a baby's teething pain, alongside simple things like a cold washcloth or a firm rubber teething ring to chew on.
The most important thing is giving the right amount. Health Canada bases the correct dose on your baby's weight, and infant acetaminophen usually comes in a concentration of 80 mg per 1 mL. Giving too much, or giving it along with another product that also contains acetaminophen, can seriously harm your baby's liver, so always measure carefully with the dosing syringe provided and check with your pharmacist if you're unsure.
A good rule to remember: teething itself does not cause fever, diarrhea, or nonstop crying. If your baby has these symptoms, something else may be going on, and it's time to call your doctor rather than just giving more medicine.
A few things to avoid: numbing gels with benzocaine or lidocaine rubbed on the gums, and homeopathic teething tablets. Health and safety agencies warn these can cause rare but serious harm, including a blood condition called methemoglobinemia that affects how blood carries oxygen. Teething necklaces are also discouraged because of choking and strangling risks.
If your baby is younger than 6 months, or you're unsure about dosing, it's best to check with your doctor or pharmacist first before giving any medicine.
Sources
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Guideline
Teething
AboutKidsHealth (SickKids, Canada)
Canadian guidance: acetaminophen or ibuprofen can ease teething pain.
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Guideline
Using over-the-counter drugs to treat cold symptoms
Caring for Kids, Canadian Paediatric Society
CPS guidance on safe acetaminophen and ibuprofen use in children.
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Guideline
Acetaminophen and children
Health Canada
Canadian dosing concentrations and overdose/liver damage warning.
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Guideline
Teething Pain Relief: How to Soothe Your Baby's Discomfort
HealthyChildren.org (AAP)
AAP guidance; warns against benzocaine, lidocaine, homeopathic remedies.
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Guideline
Teething
MedlinePlus (NIH)
Notes teething does not cause fever or diarrhea.
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Guideline
Acetaminophen Dosing Tables for Fever and Pain in Children
HealthyChildren.org (AAP)
Weight-based dosing chart and safety limits.
✓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 September 2, 2026