Ibuprofen Dosing for a 9-kg Child
For a 9-kg child, administer 90 mg of ibuprofen per dose, given every 6-8 hours, with a maximum of 3-4 doses in 24 hours. 1
Standard Dosing Calculation
The American Academy of Pediatrics recommends 10 mg/kg per dose of ibuprofen for children, which equals 90 mg per dose for your 9-kg child. 1, 2
This dose should be administered every 6-8 hours, allowing for 3-4 doses maximum in a 24-hour period. 1, 3
The maximum total daily dose should not exceed 30-40 mg/kg per day (270-360 mg total daily for a 9-kg child). 2, 4
Age and Weight Considerations
Ibuprofen is generally not recommended for infants under 6 months of age. 1
For infants 3-6 months old weighing above 5-6 kg, short-term ibuprofen use is considered safe when special attention is given to hydration, using a dose range of 5-10 mg/kg. 4
Since your child weighs 9 kg, they likely fall into the appropriate age category for standard 10 mg/kg dosing. 1
Practical Administration
Oral administration is preferred over rectal routes, as rectal absorption is erratic and less reliable, especially in young children. 4
The medication can be given without regard to meals, though administration with food may improve gastrointestinal tolerability. 2
Carefully record all dose times to avoid accidentally exceeding the maximum recommended daily dose. 5
Important Safety Warnings
Ensure adequate hydration when administering ibuprofen, particularly in young infants. 4
Do not exceed 3-4 doses in 24 hours (maximum 360 mg total daily for a 9-kg child). 2, 3
Studies show that parents frequently misdose antipyretics, with caregivers who base dosing on weight being significantly less likely to give inaccurate doses. 6
If fever or pain persists beyond 48 hours or worsens, seek medical evaluation, as fever may have more serious prognostic implications. 5