Antitubercular Drugs · Pharmacology

Which antitubercular drug is most associated with hepatotoxicity, a risk markedly increased by chronic alcohol consumption?

  1. Ethambutol
  2. Amikacin
  3. Cycloserine
  4. Isoniazid
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Correct answer: Isoniazid

Isoniazid-induced hepatitis is the most frequent major toxic effect of the drug. The risk rises with age and is markedly higher in patients who drink alcohol daily or who already have liver disease, so liver enzymes are monitored during therapy.

Difficulty: Medium Question 11 of 20

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