This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Dineshbhali Shah suffering from AIDS is on Zidovudine, lamivudine and Indnavir therapy. He develops pulmonary tuberculosis for which treatment is to be staed. Which of the following should be avoided in him? \nSelect and explain. \nA. Rifampicin, B. INH, C. Ethambutol, D. Pyrazinamide', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Rifampicin Rifampicin induces metabolism of ritonavir, indinavir and saquinavir, thus it should not be used with these drugs. Rifabutin can be used.", 'role': 'assistant'}]