Examples · Oral dose - liquid
Worked example
Oral dose - liquid - practice problem 12
The prescriber orders 650 mg of acetaminophen oral suspension. The bottle is labeled 500 mg per 15 mL.
Ordered dose650 mg
Concentration500 mg per 15 mL
How many milliliters should the nurse give?
Answer: 19.5 mL
Step-by-step solution
1. Identify what you have and what you want
Have: 500 mg per 15 mL · Want: 650 mg
2. Set up dimensional analysis so mg cancels
650 mg × ( 15 mL ÷ 500 mg )
3. Cancel mg and solve
= ( 650 × 15 ) ÷ 500 mL
= 19.5 mL
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