Pharmacy calculations worksheet with answers

Practice exercise (made-up values, not clinical guidance). A solution of epinephrine has a ratio strength of 1:10 000. How many milligrams m are in 5 mL?

Practice exercise (made-up values, not clinical guidance). How many g of sodium bicarbonate are in 10 mL of 8.4% w/v solution? Find m.

Practice exercise (made-up values, not clinical guidance). A vial contains oxacillin 2000 mg as a powder. The practice label says to add 11.5 mL of sterile water; the powder adds 1 mL to the volume. What is the concentration C in mg/mL after reconstitution?

Practice exercise (made-up values, not clinical guidance). A vial contains oxacillin 2000 mg as a powder. The practice label says to add 11.5 mL of sterile water; the powder adds 1 mL to the volume. The prescribed dose is 1000 mg. What volume V do you draw up? Round to one decimal place.

Practice exercise (made-up values, not clinical guidance). You have 60 g of 2.5% hydrocortisone ointment. How many grams m of 0.5% hydrocortisone ointment must you add to make a 1% ointment? Round to the nearest whole gram.

A vial holds 1000 mg of powder. You add 4.6 mL of diluent, and the powder adds 0.4 mL of volume. The prescription is 420 mg. Draw up the dose: what volume V do you give?