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General Pharmacology

Therapeutic Index Practice Questions

20 free Therapeutic Index practice questions for the Pharmacology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.

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All Therapeutic Index questions

20 questions
  1. Q1. The therapeutic index (TI) of a drug is best defined as:
  2. Q2. A drug with a high therapeutic index is generally considered to be:
  3. Q3. Which of the following drugs is known to have a narrow therapeutic index?
  4. Q4. If the ED50 of a drug is 10 mg and the LD50 is 100 mg, the therapeutic index is:
  5. Q5. The therapeutic window of a drug refers to:
  6. Q6. Which factor does NOT directly influence the therapeutic index of a drug?
  7. Q7. A narrow therapeutic index implies that:
  8. Q8. Which statistical measures are typically used to calculate therapeutic index in animal studies?
  9. Q9. Warfarin requires regular INR monitoring primarily because it:
  10. Q10. A drug with a therapeutic index of 2 would be considered:
  11. Q11. Which term better reflects clinical safety in humans compared to the traditional therapeutic index?
  12. Q12. An increase in drug interactions that elevate plasma concentration would most significantly affect drugs with:
  13. Q13. Which of the following is LEAST likely to require therapeutic drug monitoring?
  14. Q14. The certain safety factor is calculated as:
  15. Q15. Which scenario would decrease the effective therapeutic index of a drug in a patient?
  16. Q16. In clinical practice, the therapeutic index is most relevant for drugs that:
  17. Q17. Which parameter indicates the median dose producing toxicity in 50% of subjects?
  18. Q18. A drug’s therapeutic index does NOT account for:
  19. Q19. Which change would widen the therapeutic index of a drug?
  20. Q20. In which phase of drug development is therapeutic index primarily determined?