Examples · Weight-based dose (mg/kg)
Worked example
Weight-based dose (mg/kg) - practice problem 7
A patient weighs 25 kg. The prescriber orders clindamycin 20 mg/kg/day divided into 4 equal doses.
Weight25 kg
Ordered20 mg/kg/day
Safe max40 mg/kg/day
Frequency4 doses/day
How many mg is each dose?
Answer: 125 mg per dose
Step-by-step solution
1. Multiply weight by the ordered mg/kg/day
25 kg × ( 20 mg ÷ 1 kg )
= 500 mg/day
2. Divide the daily dose into 4 equal doses
500 mg/day ÷ 4 doses
= 125 mg per dose
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