The first line of drugs for treatment of tuberculosis are?

Correct option is A

Sol. First-line anti-TB drugs include Isoniazid (INH), Rifampicin, Pyrazinamide, Ethambutol, and Streptomycin, as per WHO and NTEP guidelines. They are effective against drug-sensitive TB and are less toxic than second-line drugs.
Explanation of each option:
· (a) INH, Rifampicin, Pyrazinamide, Ethambutol, Streptomycin – Correct standard first-line regimen.
· (b) PAS and Amikacin – These are second-line drugs, used in MDR-TB cases, not in first-line.
· (c) Kanamycin – Injectable second-line drug; not used routinely in new TB patients.
· (d) PAS and Kanamycin – Both are for resistant TB cases, not first-line standard regimen.