Generally lansoprazole is not recommended for long-term use. After oral administration of Lansoprazole enteric-coated tablets, Lansoprazole transfers to the gastric mucosa and is converted to active metabolites under acidic conditions, which plays an acid-suppressive role. Prolonged acid suppression may lead to intestinal infections, so long-term use of lansoprazole is not recommended. Lansoprazole commonly used dosage forms are tablets and injections. The one that can be taken is Lansoprazole enteric-coated tablets, which are used for gastric ulcer, duodenal ulcer, reflux esophagitis, and Droege-Ayer syndrome. Lansoprazole is contraindicated in patients who are allergic to lansoprazole and any of the ingredients in the prescription, as well as in patients who are using atazanavir sulfate. Adverse reactions to Lansoprazole include symptoms such as itching of the skin, anemia, constipation, diarrhea, thirst, and headache. Lansoprazole enteric-coated tablets should not be used blindly for a long period of time, if you need to use this drug, it is recommended that you consult a physician and take it under the guidance of a professional.