Proton Pump Inhibitors · Pharmacology

Which of the following PPIs is the S-enantiomer of Omeprazole and typically exhibits slower hepatic clearance?

  1. Lansoprazole
  2. Pantoprazole
  3. Esomeprazole
  4. Rabeprazole
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Correct answer: Esomeprazole

Esomeprazole is the pure S-isomer of omeprazole. Because it is metabolized more slowly by the liver, it provides higher serum concentrations and more prolonged acid inhibition compared to the racemic mixture.

Difficulty: Medium Question 5 of 20

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