It should be esomeprazole magnesium enteric-coated tablets. The main ingredient of esomeprazole magnesium enteric-coated tablets is omeprazole magnesium, which is a kind of medicine to inhibit the secretion of gastric acid. Omeprazole magnesium is a proton pump inhibitor, which can specifically inhibit the hydrogenase on the cells of the gastric wall, thus blocking the secretion of gastric acid and reducing the damage and irritation of gastric mucosa by gastric acid. The drug can be used in the treatment of gastroesophageal reflux disease, in combination with antimicrobial drugs for the treatment of Helicobacter pylori infection, gastric ulcers and other diseases. The drug should be swallowed with water, not chewed or crushed. For those who have difficulty swallowing, the tablets can be dissolved in carbonate-free water and swallowed; for patients who cannot swallow, the tablets are dissolved in carbonate-free water and administered through a gastric tube. Common adverse reactions to the drug include headache, diarrhea, nausea, and abdominal pain.