Bismuth citrate refers to bismuth potassium citrate, the role and efficacy is mainly for the protection of gastric mucosa. Specific use of the drug should follow the doctor’s prescription. Bismuth potassium citrate belongs to the gastric mucous membrane protection drug, in addition, it also has the effect of killing Helicobacter pylori, mainly suitable for the treatment of chronic gastritis and the relief of gastric pain, heartburn and acid reflux symptoms caused by excessive gastric acid. Contraindications include hypersensitivity to the product, patients with severe kidney disease and pregnant women. Adverse reactions of nausea, constipation, ammonia taste in the mouth, grayish-black tongue and stools are occasionally seen during treatment. Be careful not to take other bismuth preparations while taking this product. The drug should not be taken in large doses for a long time, the specific use should be carried out under the guidance of a specialist physician, not unauthorized use of drugs.