Dosage calculations worksheet with answers

Free printable Dosage calculations worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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Name: ____________________   Date: ____________

1.Easy
? × 500 mg

A patient is prescribed 1000 mg of a drug 2 times a day for 14 days. The tablets contain 500 mg each. How many tablets N are needed for the whole course?

1000 mg2× per day14 days500 mg/tablet
N = tablets
2.Easy
? × 25 mg

A patient is prescribed 25 mg of a drug 4 times a day for 14 days. The tablets contain 25 mg each. How many tablets N are needed for the whole course?

25 mg4× per day14 days25 mg/tablet
N = tablets
3.Medium
024681010 mL

A child weighing 8 kg is prescribed 7.5 mg/kg of a drug. The stock solution contains 10 mg/mL. Draw up the dose: what volume V do you give?

8 kg7.5 mg/kg10 mg/mL
V = mL
4.Medium
0.5%5 mLm = ? mg

How many milligrams of drug m are in 5 mL of a 0.5% (w/v) solution?

0.5% w/v5 mL
m = mg
5.Hard
200 mg/5 mLV = ? mL

A child weighing 18 kg is prescribed 10 mg/kg per dose of an oral suspension that contains 200 mg in 5 mL. What volume V do you give?

18 kg10 mg/kg200 mg/5 mL
V = mL
6.Hard
25k units500 mL? mL/h800 units/h

An infusion contains 25000 units of a drug in 500 mL. The prescription is 800 units per hour. At what rate R do you set the pump, in mL/h?

25000 units/500 mL800 units/h
R = mL/h

Answer key

  1. 1. N = 56 tablets
  2. 2. N = 56 tablets
  3. 3. V = 6 mL
  4. 4. m = 25 mg
  5. 5. V = 4.5 mL
  6. 6. R = 16 mL/h

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