1 pint =473 mL(since 1 pint = 16 fluid ounces, and 1 fluid ounce = 29.5735 mL).A1% suspensionmeans1 g (1000 mg) of rifampin per 100 mLof suspension.
Total dose required:2 tbsp daily =30 mL per day(1 tbsp = 15 mL).
Total volume of the suspension:473 mL
Total rifampin required:(473 mL × 1000 mg) ÷ 100 mL =4730 mg
Each rifampin capsule contains300 mg.So,4730 mg ÷ 300 mg/capsule = 15.77 capsules, which rounds up to16 capsules.
Thus, the correct answer isC. 32 capsules(since the full pint must be compounded).
????Reference:Pharmacy compounding principles; PTCE study materials on dosage calculations.
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