Pharmacology · single question
A duodenal (and gastric) peptic ulcer is most commonly associated with which organism?
Show answer and explanation
Correct answer: A. Helicobacter pylori
Helicobacter pylori is the principal infectious cause of peptic ulcer disease (both duodenal and gastric), along with NSAID use.Other options: E. coli, S. mutans, and Candida are not causes of peptic ulcer disease.Key exam takeaway: Peptic ulcers: think H. pylori and NSAIDs.