Proton Pump Inhibitors · Pharmacology

Which PPI has the most rapid conversion to its active form across a wider range of pH levels, potentially offering a faster onset of action?

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

Rabeprazole is converted to its active sulfenamide form more rapidly than other PPIs over a broader pH range. This pharmacokinetic property may lead to a slightly faster onset of acid inhibition.

Difficulty: Medium Question 12 of 20

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