Colloidal Bismuth Pectin Dry Suspension is a gastric mucosal protective agent used in the treatment of peptic ulcers, especially those caused by Helicobacter pylori infection. It can also be used to treat chronic superficial and atrophic gastritis. Colloidal bismuth pectin dry suspension is a slightly yellow powder or granular drug, the main ingredient is colloidal bismuth pectin, a pectin and bismuth generated by the composition of the variable complex. Adverse reactions such as nausea, vomiting, constipation and other gastrointestinal symptoms may occur. During the period of taking the drug, if there is a black-brown lusterless stool without other discomforts, it is a normal phenomenon, and the color of feces can be restored to normal after stopping the drug for 1~2 days. Do not take other bismuth preparations, such as bismuth potassium citrate, etc., and this product should not be taken for a long period of time in large doses, bismuth toxicity will occur, manifested as black-brown skin, the drug should be discontinued immediately. It is forbidden for pregnant women, those who are allergic to this product, and those with renal insufficiency. Nursing women, children, the elderly should be used with caution. Colloidal bismuth pectin dry suspension should be used under the guidance of a doctor.