A nurse is reinforcing discharge teaching with a client who has a prescription for rifampin for the treatment of tuberculosis (TB). Which of the following instructions should the nurse include in the teaching?

A. "Take the medication on an empty stomach.": Rifampin is most effective when taken on an empty stomach to ensure better absorption. B. "Discontinue the medication if your saliva turns orange.": This is a common side effect of rifampin, and the medication should not be discontinued due to this harmless effect. C. "Return for another TB skin test in 3 months.": Follow-up skin tests are not necessary if the client is already undergoing treatment. The focus should be on medication adherence. D. "You will need to take this medication for 1 week.": Rifampin is typically taken for several months (usually 6-9 months) to fully treat TB, not just for one week.