Drug Distribution · Pharmacology

Which of the following factors would decrease the distribution of a drug to a specific organ?

  1. Increased regional blood flow
  2. High lipid solubility of the drug
  3. Decreased capillary permeability
  4. Lower degree of ionization at physiological pH
Show answer and explanation

Correct answer: Decreased capillary permeability

Capillary permeability is essential for drugs to exit the blood and enter tissues. Organs with tight junctions (like the brain) have lower permeability compared to the liver or spleen, where large pores allow easier distribution.

Difficulty: Medium Question 6 of 20

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