Pharmacokinetics · Pharmacology

In zero-order elimination kinetics, which of the following statements is true?

  1. A constant fraction of the drug is eliminated per unit time
  2. The elimination rate is proportional to the plasma concentration
  3. The half-life of the drug is constant regardless of dose
  4. A constant amount of drug is eliminated per unit time
Show answer and explanation

Correct answer: A constant amount of drug is eliminated per unit time

Zero-order kinetics occurs when the elimination mechanisms (like enzymes) are saturated, resulting in a constant amount of drug being cleared per hour. Examples include high doses of aspirin, ethanol, and phenytoin.

Difficulty: Medium Question 4 of 20

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