For the H. pylori quadruple pill, the bismuth is taken before meals, while the acid suppressant and antibiotic are taken after meals. The quadruple combination includes two antibiotics, a bismuth agent, and an acid suppressant. Bismuth commonly used drugs are colloidal bismuth pectin, bismuth potassium citrate taken before meals, play a role in protecting the gastric mucosa. Antibiotics and acid suppressants are taken after meals to avoid irritating the gastrointestinal tract and causing discomfort. Commonly used antibiotics are amoxicillin, furazolidone, metronidazole, etc.; commonly used acid inhibitors are omeprazole, rabeprazole, etc.. It is recommended to use medication under the guidance of a physician, do not take medication on your own to avoid delaying the condition. Daily diet prohibit spicy, greasy, fried food, to light, regular diet, small amount of food.