To calculate the child’s dose using Fried’s Rule, multiply the adult dose by the child’s age, then divide by the child’s age plus 12.
The Fried’s Rule Calculator is designed for estimating pediatric medication doses based on age. Fried’s Rule provides a straightforward way to adjust an adult dosage for children. It is primarily applied in cases where a child’s precise medication dosage needs to be calculated quickly and effectively.
This approach is particularly useful in pediatric medicine, helping healthcare providers and caregivers ensure safe and age-appropriate dosing.
Formula
Dc = (Da ∗ a) / (a + 12)
Variable | Description |
---|---|
Dc | Child’s dose |
Da | Adult dose |
a | Child’s age (in years) |
Solved Calculations
Example 1:
Step | Calculation |
---|---|
Adult Dose (Da) | 200 mg |
Child’s Age (a) | 4 years |
Child’s Dose Calculation | |
Result | 50 mg |
Answer: For an adult dose of 200 mg and a 4-year-old child, the appropriate dose is 50 mg.
Example 2:
Step | Calculation |
---|---|
Adult Dose (Da) | 300 mg |
Child’s Age (a) | 6 years |
Child’s Dose Calculation | |
Result | 100 mg |
Answer: For an adult dose of 300 mg and a 6-year-old child, the appropriate dose is 100 mg.
What is a Fried’s Rule Calculator?