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Dose range by body weight

6. Patient-based Dose 6.2) Body Weight 6.2.1) Body weight General

6.2.1.1) Drug dose based on body weight Easy 1


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What would be the usual range for a adult weighting 104 lb if the usual dose of a phase III drug for adult between 25 y to 85 y of age is 5 to 55 mg/kg of body weight?


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lb equals 240 mg - 2600 mg kg


  • Simple DA method for 5 mg drug
`(5 \quad mg)/(1\quad kg) × 104 \quad lb × (0.454\quad kg)/(1\quad lb)` = 236.08 mg


  • Simple DA method for 55 mg drug
`(55 \quad mg)/(1\quad kg) × 104 \quad lb × (0.454\quad kg)/(1\quad lb)` = 2596.88 mg


Therefore, range is from 236.08 mg to 2596.88 mg actually, literatures round these numbers and express as 240 mg to 2600 mg


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