Colloidal bismuth pectin capsules are to be taken before meals or at bedtime. Colloidal bismuth pectin capsules before meals or bedtime to take the therapeutic effect is better, the effect of taking after meals will be significantly reduced. Because the drug can directly neutralize gastric acid, reduce the damage of gastric acid to the gastric mucosa, but also protect the gastric mucosa and promote the repair of gastric mucosa. Colloidal bismuth pectin capsules are suitable for peptic ulcer, chronic gastritis and other diseases. It is forbidden for serious liver and kidney insufficiency and pregnant women, and the drug has no adverse reaction to liver, kidney and nervous system. Bismuth toxicity can occur when the drug is overdosed, and should be stopped immediately and treated accordingly. If the stool shows black color, it is a normal drug reaction, and can disappear after stopping the drug. Colloidal bismuth pectin capsules should be used under the guidance of a professional physician.