Examples · Weight-based dose (mg/kg)
Worked example
Weight-based dose (mg/kg) — practice problem 7
A patient weighs 50 kg. The prescriber orders clindamycin 2 mg/kg/day divided into 3 equal doses.
Weight50 kg
Ordered2 mg/kg/day
Frequency3 doses/day
How many mg is each dose?
Answer: 33.33 mg per dose
Step-by-step solution
1. Multiply weight by the ordered mg/kg/day
50 kg × ( 2 mg ÷ 1 kg )
= 100 mg/day
2. Divide the daily dose into 3 equal doses
100 mg/day ÷ 3 doses
= 33.33 mg per dose
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