Pharmacokinetics · Pharmacology

Acidification of urine would most likely accelerate the excretion of which type of drug?

  1. Weakly acidic drugs
  2. Weakly basic drugs
  3. Neutral drugs
  4. Highly lipophilic drugs
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Correct answer: Weakly basic drugs

Weak bases become ionized (protonated) in acidic urine, making them more water-soluble and less likely to be reabsorbed back into the blood. This 'ion trapping' increases their renal excretion.

Difficulty: Medium Question 13 of 20

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