Eprazole is a proton pump inhibitor, the main effect is to inhibit the function of the proton pump, reduce the secretion of gastric acid, reduce the symptoms of ulcers, the side effects of diarrhea, dizziness, headache, liver function impairment. The drug belongs to the proton pump inhibitors, can inhibit the secretion of gastric acid by inhibiting the proton pump pathway, for the treatment of duodenal ulcer and reflux esophagitis has an important role, can reduce the acidic fluid in the stomach, can reduce the irritation of the ulcer site, thus promoting ulcer healing. The common adverse effects of this drug are diarrhea, dizziness, and liver impairment, in addition to skin rashes and back pain can occur. It is contraindicated in people who are allergic to eplazole. The drug is a prescription drug and needs to be used appropriately under the guidance of a physician and according to the patient’s condition.