Narrow therapeutic index – Pharmacology MCQ

Which of the following drugs have a narrow therapeutic index?

A. Lithium

B. Diazepam

C. Penicillin

D. Desipramine


Correct answer : A. Lithium


Other drugs with narrow therapeutic index:

  • Digoxin
  • Gentamicin
  • Amphotericin B
  • Levothyroxine
  • Prazosin
  • Theophylline
  • Quinidine
  • Warfarin
  • Valproic acid


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