gentle tools for your parenting journey

Children's Medicine Dosage

A weight-based dose range estimate for children's or infant's acetaminophen, ibuprofen or famotidine.

This tool gives a general estimate only and is not medical advice. Always check the dose against the product label and confirm with your pediatrician or pharmacist — especially for infants, and always before combining with other medicines.
Estimated single dose
dosing interval
max in 24 hours

Common questions

What is famotidine used for in infants?

Famotidine (brand name Pepcid) is an acid reducer sometimes prescribed for infant reflux or GERD, reducing how much stomach acid is produced. Unlike children's Tylenol or Motrin, it's typically prescribed and dosed individually by a pediatrician rather than chosen freely by a parent off the shelf.

How is children's Tylenol or Motrin dosage calculated by weight?

Both are commonly dosed by a set number of milligrams per kilogram of body weight per dose — roughly 10–15 mg/kg for acetaminophen and 5–10 mg/kg for ibuprofen, given at set intervals. Enter your child's weight and the product's concentration above to see the estimated dose in mg and mL.

Can I give Tylenol and Motrin at the same time?

Some pediatricians do recommend alternating or combining acetaminophen and ibuprofen for stubborn fevers, but the timing and amounts matter to avoid accidentally exceeding either medication's daily maximum. Confirm a specific combined schedule with your pediatrician rather than improvising one.

Is this calculator a substitute for my pediatrician?

No — it's a general reference based on published weight-based dosing ranges, not a personalized medical recommendation. Always check the dose against your specific product's label, confirm with your pediatrician or pharmacist, and never exceed the maximum daily amount.