Examples · Oral dose — tablets
Worked example
Oral dose — tablets — practice problem 7
The prescriber orders 20 mg of furosemide PO. The pharmacy stocks furosemide in 10 mg tablets.
Ordered dose20 mg
On hand10 mg per tablet
How many tablets should the nurse give?
Answer: 2 tablets
Step-by-step solution
1. Identify what you have and what you want
Have: 10 mg per tablet · Want: 20 mg
2. Set up dimensional analysis so mg cancels
20 mg × ( 1 tablet ÷ 10 mg )
3. Cancel mg and solve
= ( 20 × 1 ) ÷ 10 tablet
= 2 tablets
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