Question

The nurse has received an order for penicillin v potassium (Penicillin-VK®) suspension 0.75 g. The drug is available as 250 mg/5 mL. How many milliliters should be given?

Answer 1

5mgx3=15 mg.

Step-by-step explanation:

.75g=750 mg. 250/5x3=750

Answer 2

15 ml should be given.

Step-by-step explanation:

As per the DRUG DOSAGE CALCULATION, the formula is given as,

`D * Q/H = x`

where

D represents ordered dosage = 0.75 g

Q represents Quantity of unit= --per 5 ml

H represents Strength of the Dosage = 250 mg /v

x represents Unknown Dosage= ?

First we have to convert g to mg , that is

1 g = 100 mg

0.75 g =
`0.75 * 100 mg` = 75 mg

So applying these values in the above formula, we will get,

`750 mg * 5 ml /250 mg` = 15 ml

So the answer is 15 ml.