## Pharmaceutics Calculations Practice Set #6 with Answers

Question 1
The content of a vial of Penicillin G potassium weighs 800 mg and represents 1 million units. How many milligrams are needed to prepare 15 g of ointment that has to contain 15,000 units of penicillin G potassium per gram?
A. 180
B. 12
C. 135
D. 150

Question 2
Insulin glargine injection (U-100) is available in 10 ml vials. How many mL would a patient administer for (a) starting dose of 15 units and (b) maintenance dose of 5 units?
A. (a) 0.1 mL
(b) 0.04 mL
B. (a) 0.15 mL
(b) 0.05 mL
C. (a) 0.15 mL
(b) 0.5 mL
D. (a) 15 mL
(b) 5 mL

Question 3
How many complete days will a 3 ml HUMALOG (U-100) pen last a patient whose dose is 40 units bid?
A. 4
B. 5
C. 3
D. 2

Question 4
0.01 mL of mumps vaccine contains 500 TCID50 of the mumps virus. If the usual dose contains 20,000 TCID50, how many mL of vaccine should be administered?
A. 0.5
B. 5
C. 0.4
D. 3

Question 5
7.5 Lf units of diphtheria toxoid are present in 0.25 mL. How many flocculating units would be present in a 7.5 ml vial?
A. 112.5
B. 56
C. 225
D. 49

Question 6
The usual dosage range of a drug is 2.5 to 5 mg/kg of body weight. What would be the dosage range, in grams, for a person weighing 165 lb?
A. 187.5 – 375 g
B. 0.1875 – 0.375 g
C. 0.4125 – 0.825 g
D. 412.5 – 825 g