Question

Drug X is only available as a concentrated liquid. The following prescription is presented to the pharmacist. Rx Drug X 0.4 mL Flavoring Vehicle qs ad 10 mL Sig: Take 0.5 mL orally twice a day. The prescription asks the pharmacist to dispense 10 mL of a prescription containing 0.4 mL of Drug X and 9.6 mL of an inert flavoring vehicle. The child will take each dose using an oral syringe. You have a 10 ml graduate calibrated from 2 ml to 10 mL in 1-milliliter divisions to use for measurement. Please place your answers on the lines below. How many mL of Drug X should you use? What multiplier did you use? How many mL of Flavoring Vehicle should you use? What is the volume of the mixture that contains the required amount of Drug X?

Answer 1

By Aliquot method,

The graduate calibrated from minimum 2mL to maximum 10mL. So a total of 8mL.

0.4mL X 5 = 2mL.

2mL contains 0.4 mL of drug X.

For dilution preparation,

2mL X 4 = 8mL.

8mL -2mL = 6mL flavoring vehicle should be added.

Therefore, 1: 4 dilution method is used  (2mL of drug X, 6mL of flavoring vehicle)

2mL How many mL of drug X should you use?

5 what multiplier did you use?

6mL How many mL of flavoring vehicle should you use?

2mL what is the volume of mixture that contains the required amount of drug X?