Pharmacokinetics: 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 · Pharmacokinetics

Sample item

What is the purpose of a loading dose?

ARapidly achieve target plasma concentrationBPrevent all adverse effectsCEliminate need for maintenance doseDReduce drug absorption

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

The answer and the reasoning

A. Rapidly achieve target plasma concentration

A loading dose is calculated from volume of distribution and desired concentration to reach therapeutic levels quickly before maintenance dosing.

Option by option

A. Rapidly achieve target plasma concentration (correct)
Correct: loading dose fills the apparent distribution volume.
B. Prevent all adverse effects
Adverse effects can still occur.
C. Eliminate need for maintenance dose
Maintenance dosing maintains the achieved level.
D. Reduce drug absorption
It does not intentionally reduce absorption.

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.

Questions about this Pharmacology question

What is the answer to this Pharmacology question?

The best answer is A, Rapidly achieve target plasma concentration. A loading dose is calculated from volume of distribution and desired concentration to reach therapeutic levels quickly before maintenance dosing.

Why is "Prevent all adverse effects" not the answer?

Adverse effects can still occur.

Why is "Eliminate need for maintenance dose" not the answer?

Maintenance dosing maintains the achieved level.

Why is "Reduce drug absorption" not the answer?

It does not intentionally reduce absorption.

What concept does this question test?

It tests Pharmacokinetics in Pharmacology. The correct option holds because: Correct: loading dose fills the apparent distribution volume.

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 Pharmacokinetics?

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.