Examples · Oral dose - tablets
Worked example
Oral dose - tablets - practice problem 5
The prescriber orders 50 mg of atenolol PO. The pharmacy stocks atenolol in 100 mg tablets.
Ordered dose50 mg
On hand100 mg per tablet
How many tablets should the nurse give?
Answer: 0.5 tablets
Step-by-step solution
1. Identify what you have and what you want
Have: 100 mg per tablet · Want: 50 mg
2. Set up dimensional analysis so mg cancels
50 mg × ( 1 tablet ÷ 100 mg )
3. Cancel mg and solve
= ( 50 × 1 ) ÷ 100 tablet
= 0.5 tablets
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