<prompt> All of the following are examples of bactericidal drugs except -INHRifampicinEthambutolPyrazinamide  <response>: Ans. is c 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. 