Follow the dosing instructions on the package or from your doctor
Use the correct dose based on age and weight
Give ibuprofen and acetaminophen at different times, not together, if alternating
Keep track of the exact time each medicine is given
Common alternating schedule:
Give acetaminophen
Wait 3 hours
Give ibuprofen
Wait 3 hours
Give acetaminophen
Continue alternating every 3 hours if needed
Do not give acetaminophen more often than every 4 to 6 hours
Do not give ibuprofen more often than every 6 to 8 hours
Do not exceed the maximum daily dose for either medicine
Use only one medicine if it controls the fever or pain
Ask a doctor or pharmacist before alternating for a child under 2 years old
Ask a doctor before using ibuprofen if there is vomiting, dehydration, kidney disease, stomach ulcers, or bleeding problems
Seek medical advice if fever lasts more than 3 days or pain worsens