Dosage Calculation – Examples
Questions and Answers| 100% Pass
A nurse is providing instruction to a client who has a new prescription for cimetidine 150
mg PO every 12 hr. Available is 300 mg/5 mL. How many tsp should the nurse instruct
the client to take per dose? (Round answer to nearest tenth). - Answer✔️✔️-x tsp = 1
tsp/5mL X 5mL/300mg X 150mg/1
= 0.5 tsp
A provider prescribes magnesium hydroxide 2.4 g PO daily. Available is 400mg/5mL.
How many mL should the nurse administer? (Round answer to nearest whole number) -
Answer✔️✔️-x mL = 5mL/400mg X 1,000mg/1g X 2.4g/1
= 30 mL
A nurse is reviewing instructions with a client who has a new order prescription for
furosemide 75 mg PO daily. Available is 10mg/mL. The nurse should instruct the client
to take how many tsp daily? (Round answer to nearest tenth) - Answer✔️✔️-X tsp =
1tsp/5mL X 1mL/10mg X 75mg/1
= 1.5 tsp
A provider prescribes sodium polystyrene sulfonate 4 oz PO every 6 hr. Available is 60
mL/unit dose. How many unit doses should the nurse administer every 6 hrs? (Round
answer to nearest whole number) - Answer✔️✔️-x unit doses = 1 unit dose/60 mL X
30mL/1oz X 4oz/1
= 2 unit doses
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