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This study assessed the safety and effectiveness of vonoprazan for prevention of duodenal and gastric ulcer recurrence in patients on long-term nonsteroidal anti-inflammatory drugs (NSAIDs) in routine clinical practice. This 12-month, prospective, observational study (145 sites, Japan, September 2016–April 2020) analyzed patients with a history of gastric or duodenal ulcer who started once-daily vonoprazan and were receiving NSAIDs for pain. The primary outcome was the incidence of adverse drug reactions (ADRs). Most patients (86.7% [1099/1268]) received vonoprazan for at least 6 months. Most patients (98.6% [1250/1268]) received the 10-mg dose of vonoprazan, 38.3% (486/1268) received cyclooxygenase-2 inhibitors, and 61.7% (782/1268) received other NSAIDs. The overall incidence of ADRs was 0.71% (9/1268). Most commonly reported ADRs were gastrointestinal (0.32%), nervous system (0.16%), and hepatobiliary system (0.16%) disorders. The overall incidence of gastric or duodenal ulcer recurrence was 1.04% (95% CI 0.56–1.78). No new safety concerns were reported for vonoprazan for prevention of secondary ulcer or bleeding in patients receiving long-term NSAIDs. Vonoprazan was effective for preventing NSAID-related peptic ulcer recurrence in this real-world study. ClinicalTrials.gov: NCT03214198; Japan Pharmaceutical Information Center Clinical Trials Information: JapicCTI-163436.

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Long-term safety and effectiveness of vonoprazan for prevention of gastric and duodenal ulcer recurrence in patients on nonsteroidal anti-inflammatory drugs in Japan: a 12-month post-marketing surveillance study