Ethambutol Home>Pharmacy>Drugs_and_Medications>E>Ethambutol     Web Pages Ethambutol Basic information about this antimycobacterial. Ethambutol Used in combination with other drugs for prevention and treatment of MAC and drug resistant tuberculosis (TB).(Myambutol) DrugDigest: Ethambutol ( Myambutol ) Information on dosage, usage, side effects, interactions, and drug comparisons, including generics when available. Myambutol Full prescribing information from RxList.