Lansoprazole enteric-coated tablets generally need to be taken for 4 to 8 weeks, the specific time should be adjusted under the guidance of the doctor according to the patient’s condition, the type of disease and their own physical condition. Lansoprazole is a second-generation proton pump inhibitor, which can inhibit gastric acid secretion by inhibiting the proton pump, and achieve the effect of reducing gastric acid. It is mainly used in the treatment of gastric ulcer, duodenal ulcer, anastomotic ulcer, reflux esophagitis and Zuoai syndrome, etc. It can be used as the first choice of medicine for the treatment of various digestive diseases related to excessive gastric acid secretion. 1. Gastric and duodenal ulcers, reflux esophagitis: Usually, the course of treatment is 6-8 weeks for gastric ulcers, 4-6 weeks for duodenal ulcers and 4-8 weeks for reflux esophagitis. 2. Zoë syndrome: the course of treatment varies from person to person, and usually requires at least 4 weeks or more, it is recommended to consult a doctor for details. It should be noted that Lansoprazole should be taken under the supervision of a doctor and should not be used without authorization.