Eradication of Helicobacter pylori infection treatment always regurgitation after stopping the drug may be caused by the adverse reaction of drugs or allergic reaction. 1. Adverse drug reactions: anti-Helicobacter pylori infection using four drugs contain antibiotics, such as metronidazole, amoxicillin, clarithromycin and other drugs, which have a certain degree of irritation to the intestinal tract, may lead to regurgitation of symptoms. 2. Drug allergic reaction: If the patient not only nausea, regurgitation symptoms, and even hives, angioedema, then you need to stop the drug, may be caused by drug allergy, need to go to the regular hospital in time for examination. If the symptoms continue to be unrelieved, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to clarify the cause of the disease and targeted treatment, do not take medication on their own, so as not to delay the condition.