Question

A 10 lb. cat needs 31⁄2 tablets that each contain 6 mg of a drug. what's the equivalent dose in mg/kg?

Answer 1

Mass of cat = 10 lb

1 lb = 0.454 kg

So mass of cat is 4.54 kg

Number of tablets given to cat

$N = 3\frac{1}{2}$

Each tablet has 6 mg of drug

Total drug given to cat

$Drug = 3\frac{1}{2} * 6mg$

$Drug = 21 mg$

Now dose given to cat in mg/kg form

$Dose = \frac{mass of drug in mg}{mass of cat in kg}$

$Dose = \frac{21mg}{4.54kg}$

$Dose = 4.63mg/kg$