A nurse assesses a client receiving rifampin therapy for active TB. Which statement indicates the client understands the medication?

A. Rifampin can cause orange-red discoloration of urine, sweat, saliva, and tears, not green. While this effect is harmless, it should be explained to clients to prevent unnecessary concern. Saying “green urine” indicates a misunderstanding of the expected side effects. Clients should be taught that urine, sweat, and other bodily fluids may appear reddish-orange and that this is a normal reaction to rifampin. B. Rifampin does not typically increase appetite. Any claims about appetite changes are unrelated to the drug’s therapeutic effect or known side effects. This reflects a misunderstanding of what to expect during therapy. C. Drooling or excessive salivation is not associated with rifampin. Stating this as an expected effect indicates misinformation or misunderstanding regarding the medication’s side effect profile. D. Standard treatment for active tuberculosis requires prolonged therapy, usually six months or longer, depending on the drug regimen. Rifampin is a key component of combination therapy to prevent drug resistance and ensure eradication of Mycobacterium tuberculosis. Understanding the duration and importance of adherence demonstrates the client’s comprehension of therapy goals. Completion of the full course is crucial to prevent relapse, reduce transmission risk, and avoid development of multidrug-resistant TB.