The course of anti-Helicobacter pylori treatment is usually 2 weeks, or about 14 days. H. pylori is a pathogenic bacterium in the stomach that can lead to chronic gastritis, peptic ulcers and, in severe cases, gastric cancer. For patients with H. pylori infection who also have coexisting gastric disease, it is recommended that anti-H. pylori treatment is required. Anti-H. pylori treatment is triple or quadruple therapy, which means two antibiotics, such as two of amoxicillin, clarithromycin, and metronidazole, plus four drugs such as proton pump inhibitors, such as omeprazole and rabeprazole, and mucosal protectors, such as bismuth potassium citrate, whose course of treatment is usually about 2 weeks. After 1 course of oral medication, stop taking the medication for 1 month and check again for H. pylori infection by breath test, if there is still H. pylori infection, anti-H. pylori treatment can be given again.