TABLE 1.

Antituberculosis drugs

Group	Description	Drugs
1	First-line oral agents	Isoniazid, rifampicin, ethambutol, pyrazinamide, rifabutin
2	Injectable agents	Kanamycin, amikacin, capreomycin, streptomycin*
3	Fluoroquinolones	Moxifloxacin, levofloxacin, gatifloxacin, ofloxacin
4	Oral bacteriostatic second-line agents	Ethionamide, protionamide, cycloserine, para-aminosalicylic acid
5	Agents with unclear efficacy	Clofazimine, linezolid, amoxicillin-clavulanic acid, thiacetazone, clarithromycin, imipenem

^*Streptomycin is not considered to be a ‘second-line injectable drug’. Adapted from references 7 and 8