Ethambutol (EMB)π
Isoniazid (INH)π
Rifampicin (RIF)π
Pyrazinamide (PZA)π
Fixed-dose combination:
2-drug: Rifampicin 150mg/ Isoniazid 75mg Tabletπ
4-drug: Rifampicin 150mg/ Isoniazid 75mg/ Ethambutol HCl 275mg Tablet / Pyrazinamide 400mgπ