Side effects and hazards of lansoprazole include the development of rash, itching, anemia, leukopenia, headache, drowsiness, and fever. Common dosage forms of lansoprazole include tablets and capsules, which have the effect of inhibiting gastric acid secretion. It is commonly used in the treatment of duodenal ulcers, reflux esophagitis, gastric ulcers, Zuo-Ai syndrome, and anastomotic ulcers. It should be noted that it is contraindicated for those who are allergic to the components of the preparation of this product. It should be used with caution in patients with hepatic dysfunction, elderly patients, as well as patients with a previous history of drug allergies. If you need to use lansoprazole, it is recommended to go to a regular hospital to consult a doctor and use the drug under the doctor’s guidance.