Pharmacodynamics: practice question

A Pharmacology question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Pharmacology · Pharmacodynamics

Sample item

What is the therapeutic index intended to reflect?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

B. Relative safety margin

The therapeutic index compares toxic and effective dose ranges, providing a rough indication of a drug's safety margin under defined conditions.

Option by option

  • A. Rate of absorption

    Absorption rate is a pharmacokinetic parameter.

  • B. Relative safety margin (correct)

    Correct: therapeutic index estimates separation of toxic and effective doses.

  • C. Time to first dose

    Time to first dose is an administration detail.

  • D. Drug taste

    Taste does not define a drug safety margin.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

More Pharmacology questions

Questions about this Pharmacology question

What is the answer to this Pharmacology question?

The best answer is B, Relative safety margin. The therapeutic index compares toxic and effective dose ranges, providing a rough indication of a drug's safety margin under defined conditions.

Why is "Rate of absorption" not the answer?

Absorption rate is a pharmacokinetic parameter.

Why is "Time to first dose" not the answer?

Time to first dose is an administration detail.

Why is "Drug taste" not the answer?

Taste does not define a drug safety margin.

What concept does this question test?

It tests Pharmacodynamics in Pharmacology. The correct option holds because: Correct: therapeutic index estimates separation of toxic and effective doses.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Pharmacodynamics?

Learn drugs as classes, then the exception in each class that an examiner would pick. Then use the flashcards and the other Pharmacology questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.