Question

Using the contents of a 1,000,000-unit vial polymyxin B sulfate and sterile saline solution as a diluent, how would you obtain the antibiotic required to compound the following prescription? $\mathrm{R}$ Polymyxin B sulfate $\quad 200,000$ units $/ \mathrm{mL}$ Sodium chloride ad $\quad 30 \mathrm{~mL}$ Sig. Use as topical disinfectant.

   Using the contents of a 1,000,000-unit vial polymyxin B sulfate and sterile saline solution as a diluent, how would you obtain the antibiotic required to compound the following prescription?
$\mathrm{R}$
Polymyxin B sulfate $\quad 200,000$ units $/ \mathrm{mL}$
Sodium chloride ad $\quad 30 \mathrm{~mL}$
Sig. Use as topical disinfectant.

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Essential Math and Calculations for Pharmacy Technicians

Essential Math and Calculations for Pharmacy Technicians

Indra K. Reddy,… 1st Edition

Chapter 11, Problem 26

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Step 1

The prescription requires a concentration of 200,000 units/mL and a total volume of 30 mL. Therefore, the total amount of polymyxin B sulfate needed is: \[ 200,000 \, \text{units/mL} \times 30 \, \text{mL} = 6,000,000 \, \text{units} \] Show more…

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Using the contents of a 1,000,000-unit vial polymyxin B sulfate and sterile saline solution as a diluent, how would you obtain the antibiotic required to compound the following prescription? $\mathrm{R}$ Polymyxin B sulfate $\quad 200,000$ units $/ \mathrm{mL}$ Sodium chloride ad $\quad 30 \mathrm{~mL}$ Sig. Use as topical disinfectant.

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