It is not recommended to take bismuth potassium citrate capsules for a long time is to avoid causing kidney damage, bismuth toxicity and other conditions, but this is not absolute, some cases can also be taken for more than seven days. Bismuth potassium citrate capsule can be used for the treatment of chronic gastritis and relief of stomach pain, acid reflux, heartburn sensation and other symptoms caused by excessive stomach acid. Patients with severe kidney disease and pregnant women should not be treated with this medication. The use of the drug may cause adverse reactions such as black stools, kidney toxicity, and uncomfortable symptoms in the skeletal muscles. Because bismuth potassium citrate capsule is a kind of bismuth agent, bismuth agent can not be taken for a long time, if long-term large doses may cause bismuth toxicity, and there is also the possibility of causing renal impairment, so it is not recommended to take more than seven days, if the drug does not see any relief for seven days then it is recommended that you go to the hospital for medical treatment. But eating bismuth citrate potassium capsules can not be more than seven days is not absolute, used to kill Helicobacter pylori can be served for 10 to 14 days. Patients who need to use bismuth potassium citrate capsule treatment should be under the guidance of a doctor.