Which of the following anti-tubercular drug is least hepatotoxic?: (A) Rifampicin, (B) Pyrazinamide, (C) Ethambutol, (D) INH
Answer is C. Ethambutol among the given options is the least hepatotoxic antitubercular drug. Ethambutol side-effect includes Dose dependent adverse effect Red green colour blindness (optic neuritis) which is initially reversible but later becomes irreversible. Therefore it is avoided in children < 6yr.