H2 Blockers · Pharmacology

What happens to gastric pH after a single dose of an H2 blocker?

  1. It decreases significantly
  2. It stays fixed at about pH 1.0
  3. It increases, becoming less acidic
  4. It fluctuates wildly between 1 and 14
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Correct answer: It increases, becoming less acidic

H2 blockers inhibit the production of hydrochloric acid. This results in a rise in the gastric pH, which helps relieve the pain of acid-related disorders and allows for mucosal healing.

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