Steven, a 40-year-old man, is being treated for tuberculosis. During his recent checkup, the physician noticed that the durations of action of the drugs administered, including Rifadin, have decreased. Which of the following should be done in such a case?
A. Rifadin should not be taken on a regular basis.
B. The dosage of Rifadin should be decreased.
C. The dosage of Rifadin should be increased.
D. The bioavailability of Rifadin should be neutralized.
Answer: C
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