Antitubercular Drugs · Pharmacology

Latent Tuberculosis Infection (LTBI) is most commonly treated with which single-drug regimen?

  1. Rifampin for 12 months
  2. Ethambutol for 3 to 6 months
  3. Isoniazid for 6 to 9 months
  4. Pyrazinamide for 6 months
Show answer and explanation

Correct answer: Isoniazid for 6 to 9 months

Isoniazid monotherapy for 6 to 9 months is the traditional standard for latent tuberculosis infection and prevents progression to active disease. Shorter rifamycin-based regimens are now also widely used, but ethambutol and pyrazinamide are not given as single-drug treatment for latent infection.

Difficulty: Medium Question 20 of 20

Practice all 20 Antitubercular Drugs questions

Keep practicing

More Antitubercular Drugs questions