Case 2: Antiretrovirals and Tuberculosis Therapy

You answered:

	Ethambutol will lower efavirenz levels by at least 50%.

This answer is incorrect. An interaction between ethambutol and efavirenz is not expected.

Choose another answer:

	Isoniazid will markedly decrease darunavir and ritonavir levels.
	Rifampin will increase efavirenz levels by at least 50%.
	Rifampin will significantly lower darunavir and ritonavir levels.