1. Pediatric doses
if there is no recommended dose for kids in the package then…..
kids pharmacodynamics is different.
2 choices to do the math--will not be exactly same
Youngs rule----
kid age/(kid age+12)x adult dose=kid dose
Clarks rule---
(kid weight lbs/150) x adult dose=kid dose

2. Pediatric doses
kid weighs 40lbs and 5yo. adult dose of drug Z is 250mg.
youngs rule---
(5/17) x 250mg=73.5mg drug Z
clarks rule--
(40/150)x 250mg=66.7mg drug Z
kids weighs 11.4kg and 2yo. adult dose is 125mg.
11.4kgx2.2=25.08lbs
young---2/(2+12)x125mg=18mg
clarks--(25/150)x125mg=21mg

3. Pediatric doses Cowlings rule: Age next bday/24 * adult dose=kid dose
Infants have Frieds rule---
Months/150 * adult dose= infant dose
BSA for toddlers and infants—west nomogram
Kid dose=BSA in m2 for kid/(1.7 is adult BSA) x adult dose