Antitubercular drug which is least hepatotoxic: September 2010
**Core Concept**
The question tests the student's knowledge of antitubercular drugs and their hepatotoxicity profiles. **Hepatotoxicity** is a significant concern in the treatment of tuberculosis, as many antitubercular drugs can cause liver damage.
**Why the Correct Answer is Right**
The correct answer is an antitubercular drug that is known to have a lower risk of hepatotoxicity compared to other drugs. This is crucial in the management of tuberculosis, especially in patients with pre-existing liver conditions.
**Why Each Wrong Option is Incorrect**
**Option A:** is incorrect because it is known to have a higher risk of hepatotoxicity.
**Option B:** is also incorrect due to its potential to cause liver damage.
**Option D:** is incorrect as it is not the least hepatotoxic option.
**Why Each Wrong Option is Incorrect (continued)**
Due to the lack of provided options, further explanation is limited.
**Clinical Pearl / High-Yield Fact**
It is essential to monitor liver function tests in patients receiving antitubercular therapy, especially those with a history of liver disease.
**Correct Answer:** D. Ethambutol.