Western medicines are effective in treating gastritis, and the current western medicines for gastritis include ranitidine, omeprazole, aluminum hydroxide, magnesium aluminum carbonate, bismuth potassium citrate, clarithromycin, amoxicillin, and metronidazole, etc. The specific medicines to be used need to be decided by the doctor according to the patient’s condition. Gastritis may be associated with factors such as stress, drugs, alcohol, and H. pylori infection. Stress, drugs, alcohol and other factors can lead to erosion and bleeding of the gastric mucosa, and Helicobacter pylori infection can also lead to destruction of the gastric mucosal barrier, so drugs such as ranitidine and omeprazole can be used to reduce the secretion of gastric acid to protect the gastric mucosa. In addition, in the treatment, gastritis patients should also use aluminum hydroxide, magnesium aluminum carbonate, bismuth potassium citrate and other drugs to protect the gastric mucosa; clarithromycin, amoxicillin, metronidazole and other drugs can be used to kill Helicobacter pylori, but the treatment of Helicobacter pylori infection should also be coupled with omeprazole, bismuth potassium citrate and other drugs in order to achieve the effect of radical cure. If gastritis is diagnosed, please follow the doctor’s instructions for treatment.