Examples · Oral dose — tablets
Worked example
Oral dose — tablets — practice problem 12
The prescriber orders 150 mg of warfarin PO. The pharmacy stocks warfarin in 100 mg tablets.
Ordered dose150 mg
On hand100 mg per tablet
How many tablets should the nurse give?
Answer: 1.5 tablets
Step-by-step solution
1. Identify what you have and what you want
Have: 100 mg per tablet · Want: 150 mg
2. Set up dimensional analysis so mg cancels
150 mg × ( 1 tablet ÷ 100 mg )
3. Cancel mg and solve
= ( 150 × 1 ) ÷ 100 tablet
= 1.5 tablets
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