The generic name of Rezidor is bismuth potassium citrate granules, and how long the drug is used should depend on your condition. If it is used to protect the gastric mucosa, the course of treatment is 4~8 weeks, and for killing Helicobacter pylori, the course of treatment is 10~14 days. Bismuth potassium citrate granules are gastric mucous membrane protector, this product is mainly used for chronic gastritis and relief of gastric pain, heartburn sensation, heartburn, acid reflux caused by excessive gastric acid. 1. For gastric mucous membrane protection: the course of treatment is usually 4~8 weeks. 2. For killing Helicobacter pylori: combined with two antibiotics such as metronidazole, amoxicillin, etc. as well as gastric acid inhibiting drugs such as omeprazole, etc., the course of treatment is 10~14 days. Bismuth potassium citrate particles use time should be combined with their own disease type and severity, the specific use of time should consult a doctor, combined with their own condition, the use of drugs appropriate time, in order to facilitate the rapid recovery of the disease.