All of the following are bactericidal drugs except-: (A) Ethambutol, (B) Isoniazid, (C) Rifampicin, (D) Pyrazinamide
Answer is A. Ans. is 'a' i.e., Ethambutol o All first-line drugs are tuberculocidal except ethambutol which is tuberculostatic. Tuberculocidal - Rifampin, INH, streptomycin, pyrazinamide. Tuberculostatic - Ethambutol, PAS, cycloserine, thioacetazone.