Stomach bloating and indigestion can be caused by chronic gastritis, gastric ulcer, acute gastroenteritis, etc. taking omeprazole is useful. 1. Omeprazole is useful for stomach bloating and indigestion caused by chronic gastritis. Chronic gastritis is mainly caused by Helicobacter pylori infection, omeprazole can inhibit the secretion of gastric acid and eradicate the role of Helicobacter pylori, so it is useful. 2. Gastric ulcer caused by gastric distension, indigestion is mainly caused by Helicobacter pylori infection and drug-induced gastric acid secretion, gastric mucosal barrier damage caused by omeprazole can inhibit gastric acid secretion to relieve the symptoms, so take omeprazole is useful. 3. Acute gastroenteritis caused by gastric distension, dyspepsia is mainly caused by bacterial, viral infection caused by gastrointestinal mucosal damage, omeprazole can inhibit acid, protect the gastric mucosa, so take omeprazole is useful. If there is a need for medication, you should go to the hospital for a clear diagnosis and use the medication after it is prescribed by a doctor, and you should not use the medication blindly on your own, so as not to cause adverse effects on the body.