# Fried's rule

Fried's Formula

How do you use Fried's rule? I see Young's and Clark's on this site, but not the formula for fried's. Please let me know more about this dosage calculation.

### Comments for Fried's rule

 Fried's Rule Formula by: Jerry Fried's Rule is available to use to calculate an infant dosage for patients under 24 months when a proper dosage has not been already determined. It most likely would never be asked about on the PTCB exam, and that's why there's no tutorial for it on the website. I added a picture above to show the formula. But, it's basically just like Clark's rule, but use months instead of weight. Months ------- X Adult Dosage 150

 why 150 IB by: Anonymous can someone please explain to me why we divided by 150 ??

 Fried's Rule by: Anonymous Because Liter represents volume and liquid equals to 1000 milliliter.

 Reason for 150 by: Anonymous A child of 12.5 years old is for many considered an adult for dosage purposes. Twelve and a half years equals 150 months old

 why 150 used to divide by: Anonymous 150 is used since that is determined to be the weight of an "average" adult and adult doses are based on a 150lb patient