Can fasting while taking omeprazole (a proton‑pump inhibitor) cause peptic ulcer disease in a young patient who drinks occasionally and vapes? | Rounds Can fasting while taking omeprazole (a proton‑pump inhibitor) cause peptic ulcer disease in a young patient who drinks occasionally and vapes? | Rounds
Loading...

Can fasting while taking omeprazole (a proton‑pump inhibitor) cause peptic ulcer disease in a young patient who drinks occasionally and vapes?

Medical Advisory Board
All articles are reviewed for accuracy by our Medical Advisory Board.

Educational purpose only · Not a substitute for professional judgment or the full text of guidelines and labels.

Article Review Status
Submitted
Under Review
Approved

Last updated: July 14, 2026 · View editorial policy

Peptic ulcer disease development with fasting during proton-pump inhibitor therapy

Fasting is not established as a cause of new peptic ulcer disease, and proton-pump inhibitors treat ulcer disease by suppressing gastric acid. [1], [2] In a randomized prospective study of patients with endoscopically confirmed duodenal ulcer treated with lansoprazole, fasting during Ramadan did not worsen symptoms or ulcer healing outcomes. [2]

Proton-pump inhibitors and ulcer disease causation

Proton-pump inhibitors are prescribed for peptic ulcer disease because acid suppression supports ulcer healing. [1] No evidence supports that therapeutic PPI use during fasting provokes peptic ulcer disease. [1], [2]

Established ulcer disease risk drivers in younger patients

Peptic ulcer disease is most strongly associated with Helicobacter pylori infection and nonsteroidal anti-inflammatory drug exposure. [3] Alcohol use and cigarette smoking increase ulcer risk in patients with untreated H. pylori infection. [1] Fasting does not replace H. pylori or NSAID exposure as an ulcer etiology. [1], [3]

Evidence specifically addressing fasting during PPI treatment

In the Ramadan study, duodenal ulcer patients received lansoprazole for 4 weeks and were randomized to fast or not fast during the month, with follow-up endoscopy at the end of the month. [2] Healing rates were 88.8% in the fasting group and 90% in the non-fasting group. [2] No ulcer complications were reported in either group. [2]

Clinical implications for vaping and occasional alcohol use

Occasional alcohol use can increase ulcer risk in the presence of untreated H. pylori infection. [1] The contribution of vaping to peptic ulcer disease risk is not established in the cited sources and cannot be concluded from available guideline-supported statements. [1], [3]

When to evaluate for peptic ulcer disease

Evaluation for H. pylori infection is indicated when peptic ulcer disease is suspected because H. pylori is a major causal factor. [3] Clinical assessment should also include exposure review for NSAIDs or other ulcer-inducing medications because NSAID exposure is a major driver of ulcer disease. [3]

Treatment urgency signals requiring prompt medical care

Urgent evaluation is indicated for suspected ulcer complications such as gastrointestinal bleeding or perforation. [1]

Targets for prevention during PPI therapy

Continuation of prescribed PPI therapy during the period of ulcer healing is recommended by clinical ulcer management practice. [1] H. pylori eradication is recommended for H. pylori–infected patients with peptic ulcer disease because it reduces ulcer-related outcomes. [3] Avoidance of ulcer-promoting exposures such as smoking and alcohol in the presence of untreated H. pylori infection is recommended. [1]

Related Questions