Young’s Rule, Age-Based Pediatric Dose Calculator
Use this Youngs Rule Formula to calculate pediatric drug doses for 1yr – 12yr of age childern! (Young’s Rule Calculator).
Young’s Rule
Youngs Rule is an equation used to calculate pediatric medication dosage based on the patient’s age and the known recommended adult dose.
The definition of Young’s Rule is the age of the patient, divided by the age added to twelve, all multiplied by the recommended adult dose.
Youngs Formula is used to calculate pediatric drug dose of 1yr – 12yr of age child.
Young’s Rule Formula
Formula: Youngs Rule is expressed as the child’s age in years divided by child’s age in years + 12, multiplied by the adult drug dose, to equal the pediatric drug dose.
Child’s Rule = [Age / (Age + 12)] x Adult Dose
Steps to Calculate Pediatric Drug Dose Using Young’s Rule
Step 1: Identify the Age of the Child
Determine the age of the child in years.
Step 2: Obtain the Adult Dose of the Medication
Find out the recommended adult dose of the medication in question.
Step 3: Apply Young’s Formula
Use the Youngs formula to calculate the pediatric dose:
Pediatric Dose = (Age of the Child / (Age of the Child + 12)) × Adult Dose
Step 4: Perform the Calculation
Substitute the age of the child and the adult dose into the formula and perform the calculation step-by-step.
Example Calculation
Example:
Let’s say you need to calculate the dose for a 6-year-old child and the adult dose of the medication is 200 mg.
Age of the Child: 6 years
Adult Dose: 200 mg
Apply Young’s Rule Formula:
Pediatric Dose = (6 / (6 + 12)) × 200
Pediatric Dose = (6 / 18) × 200
Perform the Calculation:
Pediatric Dose = (1 / 3) × 200 = 200 / 3 = 66.67 mg
So, the pediatric dose for a 6-year-old child would be approximately 66.67 mg.
Calculation Examples 2
A seven year old pediatric patient is admitted to hospital. If the adult dose is 100mg and the child weighs forty kilogram, what dose should the child is administered by using young’s formula?
Answer:
Child dosage= [7/(7+12)] x 100mg =7/19 x 100mg
Child dosage =37mg of medicine
Calculation Examples 3
The pediatric dose for a 9-year old child who weighs 63lbs needs to be determined. You learn that the adult dose for the same drug is 200mg. Using Youngs rule, what dose should the child be given?
Answer:
Child’s dose = [9/(9+12)] x 200mg =9/21 x 200mg
Child’s dose =86mg of medicine
General Tips
- Check that your answer makes sense clinically.
- Triple check your work.
- Ask a colleague or pharmacist to check your work.
- Know general therapeutic drug doses for commonly administered medications.
How to Use Young’s Rule Calculator?
Age-Based Pediatric Drug Dose Calculator:
- Enter age in years.
- Enter adult drug dose
- Click on “Calculate” button.
- The calculator displays the child’s drug dose below.
Check our resources if you are interested in different measurements related to Child’s Drug Dose:
To calculate your Body Surface Area (BSA) click here.
- Utilize the Pediatric BSA Dose Calculator.
- Clarks Rule; To calculate child Drug Dose based on body weight
- Child Drug Dose Calculators based on age using:
