The generic name of Losec is Omeprazole enteric-coated tablets. It is recommended that Omeprazole enteric-coated tablets be taken before breakfast, i.e. on an empty stomach. Generally, the frequency of administration is once a day, or once in the morning and once in the evening if the patient’s condition requires administration twice a day, both before meals. Omeprazole enteric-coated tablets are mainly used for gastric ulcer, duodenal ulcer, acute ulcer, reflux esophagitis and other diseases, for proton pump inhibitors. After absorption through the small intestine, it is concentrated in the stomach wall through blood circulation, thus inhibiting gastric acid. Therefore, this drug should be taken in the morning on an empty stomach, if you eat first, then the drug is poorly concentrated in the stomach wall, resulting in poor inhibition of gastric acid, affecting the efficacy. Adverse reactions include headache, abdominal pain, nausea, diarrhea, vomiting and flatulence, etc.; caution should be exercised during pregnancy and lactation; patients with hepatic insufficiency or abnormal blood counts should be used under the supervision of a physician; this product is contraindicated in those who are allergic to it, and caution should be exercised in those who are allergic to it. This drug needs to be taken under the guidance of a doctor.