Which pharmacokinetic process removes a constant amount of drug per unit time, regardless of its plasma concentration?
Correct answer: A. Zero-order elimination
- A. Zero-order elimination
- B. First-order elimination
- C. Passive diffusion
- D. Renal filtration
Explanation
Zero-order elimination removes a fixed amount of drug per unit time. First-order elimination removes a constant fraction of the drug, so its rate changes with concentration.
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Covers how drugs act in animals, including pharmacokinetics, pharmacodynamics, routes of administration, dosage forms, adverse effects and drug interactions. Major groups include antimicrobials, antiparasitics, analgesics, anaesthetics, anti-inflammatory drugs, hormones and cardiovascular medicines, with attention to withdrawal periods and species differences.
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