Pharm.D. Doctor of Pharmacy Pharmaceutical Calculations and Compounding

Question 1

A patient requires a 500 mg dose of amoxicillin. The available suspension is 250 mg/5 mL. How many mL should be dispensed per dose?

Accepted Answer

10 mL

Answer

Using the formula: (500 mg ÷ 250 mg) × 5 mL = 10 mL per dose.

Question 2

A prescription reads: acetaminophen 650 mg PO q6h PRN pain. What is the maximum daily dose?

Accepted Answer

2,600 mg

Answer

Dosing q6h means 4 doses per day; 650 mg × 4 = 2,600 mg per day.

Question 3

What does the Roman numeral 'XL' represent in a traditional prescription?

Accepted Answer

40

Answer

In Roman numerals, XL represents 40 (50 minus 10), used in prescriptions to indicate quantity.

Question 4

How many grams of NaCl are needed to prepare 500 mL of a 0.9% w/v NaCl solution?

Accepted Answer

4.5 g

Answer

0.9% w/v = 0.9 g per 100 mL; for 500 mL: 0.9 × 5 = 4.5 g of NaCl.

Question 5

A patient weighs 154 lbs. A drug is dosed at 5 mg/kg. What is the total dose in mg?

Accepted Answer

350 mg

Answer

154 lbs ÷ 2.2 = 70 kg; 70 kg × 5 mg/kg = 350 mg.

Pharm.D. Doctor of Pharmacy Practice Test