Proton Pump Inhibitors (PPIs)-An Evidence-Based Review of Indications, Efficacy, Harms, and Deprescribing
Abstract
Proton pump inhibitors (PPIs) are among the most prescribed drugs worldwide owing to their proven efficacy in symptom control and mucosal healing for acid-related disorders including gastroesophageal reflux disease (GORD), peptic ulcer disease, Helicobacter pylori eradication, functional dyspepsia, and gastroprotection in high-risk patients. However, long-term use beyond approved indications is increasingly common and has raised safety concerns. Observational studies link chronic PPI use to a myriad of adverse outcomes such as enteric infections (e.g., Clostridioides difficile), nutrient deficiencies (magnesium, vitamin B12), osteoporotic fractures, chronic kidney disease, dementia, and gastric and colorectal cancer. While causality is not always established, these associations warrant cautious risk-benefit assessment in patients receiving prolonged therapy. Current guidelines advocate periodic review of ongoing PPI use and emphasise deprescribing where appropriate. Strategies include dose reduction, on-demand or intermittent use, and switching to H2-receptor antagonists, particularly in patients with non-erosive reflux disease or functional dyspepsia. Tools from the National Institute for Health and Clinical Excellence, American College of Gastroenterology, and the Canadian Deprescribing Network assist clinicians in identifying candidates for tapering or discontinuation. This narrative review focuses on the concept of "PPI stewardship" by providing an evidence-based…
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