It is possible to take omeprazole for gastric ulcer. Omeprazole is a proton pump inhibitor, the main function of which is to inhibit the activity of proton and block the step of gastric acid secretion. When the secretion of gastric acid is reduced, the erosion of the gastric mucosa can be avoided, thus facilitating the treatment of gastric ulcer disease. The drug also inhibits the stimulation of the vagus nerve by histamine and pentagastrin, and the acid-suppressing effect lasts for a longer period of time, and after treatment with the drug, the amount of gastric acid secretion can be significantly reduced and the pH value of gastric acid can be rapidly increased. While using omeprazole drug treatment, if it can be combined with mucosal protection drugs, it can increase the therapeutic effect of the drug and promote the healing of gastric ulcer, common drugs are colloidal bismuth pectin, bismuth potassium citrate, etc. A part of people suffering from gastric ulcer is caused by H. pylori infection, while using omeprazole, it should also be combined with antibiotic drugs such as amoxicillin and clarithromycin to kill H. pylori and prevent recurrent gastric ulcer.