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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The usual dose of a phase III drug for adult over 25 y of age is 17 to 67 mg/kg of body weight. What would be the usual range for a adult weighting 175 lb?


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lb equals 1400 mg - 5300 mg kg


  • Simple DA method for 17 mg drug
`(17 \quad mg)/(1\quad kg) × 175 \quad lb × (0.454\quad kg)/(1\quad lb)` = 1350.65 mg


  • Simple DA method for 67 mg drug
`(67 \quad mg)/(1\quad kg) × 175 \quad lb × (0.454\quad kg)/(1\quad lb)` = 5323.15 mg


Therefore, range is from 1350.65 mg to 5323.15 mg actually, literatures round these numbers and express as 1400 mg to 5300 mg