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
? × 50 mg

A patient is prescribed 50 mg of a drug 4 times a day for 5 days. The tablets contain 50 mg each. How many tablets N are needed for the whole course?

50 mg4× per day5 days50 mg/tablet
N = tablets
2.Easy
50 mg/1 mLV = ? mL

The prescription is 25 mg. The stock solution contains 50 mg in 1 mL. What volume V do you draw up?

25 mg50 mg/1 mL
V = mL
3.Medium
85 kgBSA = 1.73 m²250 mg/m²D = ? mg

A patient weighing 85 kg has a body surface area of 1.73 m². The prescription is 250 mg/m². Find the dose D in mg.

85 kgBSA = 1.73 m²250 mg/m²
D = mg
4.Medium
024681010 mL

A child weighing 38 kg is prescribed 5 mg/kg of a drug. The stock solution contains 50 mg/mL. Draw up the dose: what volume V do you give?

38 kg5 mg/kg50 mg/mL
V = mL
5.Hard
200 mg/5 mLV = ? mL

A patient weighs 57.2 lb. The prescription is 15 mg/kg as a single dose, and the stock contains 200 mg in 5 mL. Using 1 kg = 2.2 lb, what volume V do you give? Round to one decimal place.

57.2 lb15 mg/kg200 mg/5 mL1 kg = 2.2 lb
V = mL
6.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 620 micrograms. The ampoule contains 2 mg/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

620 mcg2 mg/mL
V = mL

Answer key

  1. 1. N = 20 tablets
  2. 2. V = 0.5 mL
  3. 3. D = 432.5 mg
  4. 4. V = 3.8 mL
  5. 5. V = 9.8 mL
  6. 6. V = 0.31 mL

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