Pharmaceutics III - PHAR 4634

Homework #7

Answers

1. With Km = 5 mg/L and Vm = 14 mg/kg/day (wt = 78 kg) and the required average Cp = 15 mg/L the formula

DoseRate = 819.0 mg/day

2. With two dose rates and plasma concentration values.

Given Data
Dose Rate1 7 mg/kg/day
Cp1 8 mg/L
Dose Rate2 10 mg/kg/day
Cp2 24 mg/L

After solving simultaneous equations the parameters are:

Calculated Parameter Values
Km 6.55 mg/L
Vmax 12.73 mg/kg/day

With these parameters we can calculate the required dose rate:

Cpreqd 16 mg/L
Dose Ratereqd 9.03 mg/kg/day
Dose Ratereqd 786 mg/day