Drugs to protect the gastric mucosa are divided into weak alkaline antacids, colloidal bismuth agents, such as magnesium aluminum carbonate, aluminum thioglycollate, bismuth potassium citrate and so on. 1. Weak alkaline antacids: commonly used drugs such as magnesium aluminum carbonate, aluminum thiosulphate, aluminum phosphate, etc. These drugs can promote the synthesis of prostaglandins and increase the blood flow to the gastric mucosa, which can neutralize gastric acid and protect the gastric mucosa, as well as provide temporary relief of pain symptoms. 2. Colloidal bismuth: commonly used drugs for bismuth potassium citrate, bismuth pectin and so on, these drugs can form a high viscosity sol after taking, in the gastrointestinal tract to form a layer of protective film, so that the mucous membrane is not damaged, so it has the role of protecting the gastric mucosa. Damage to the gastric mucosa is often caused by excessive secretion of gastric acid, poor dietary habits, etc. It is generally recommended to follow the doctor’s instructions to take medication to protect the gastric mucosa and relieve symptoms. Please do not take medication on your own to avoid delaying your condition.