The purpose of this study is to confirm the safety profile / factors which impact safety and efficacy of Nexium capsules in daily clinical usage for the patients who have been prescribed Nexium for "gastric ulcer", "duodenal ulcer", "anastomotic ulcer", "reflux oesophagitis", "non-erosive reflux disease", or "Zollinger-Ellison syndrome"

Nexium capsules Clinical Experience Investigation

Inclusion Criteria: - Patients treated with Nexium for the first time due to gastric ulcer, duodenal ulcer, anastomotic ulcer, reflux oesophagitis, non-erosive reflux disease, Zollinger-Ellison syndrome. Exclusion Criteria: - None

Patients treated with Nexium for the first time due to gastric ulcer, duodenal ulcer, anastomotic ulcer, reflux oesophagitis, non-erosive reflux disease, Zollinger-Ellison syndrome.