Omeprazole for chronic superficial gastritis is usually taken for a course of 7 days for about two courses of treatment, usually for about half a month. Omeprazole is a proton pump inhibitor, and the commonly used dosage forms are tablets, capsules and injections. It is clinically used in the treatment of gastric ulcer, duodenal ulcer, stress ulcer, reflux esophagitis and gastrinoma. It can reduce the stimulation of gastric juice on the mucous membrane wall, which is conducive to the recovery of gastric mucous membrane inflammation, and usually takes about half a month when used to treat chronic superficial gastritis. Some patients may experience nausea and vomiting, constipation, headache, and diarrhea after taking omeprazole. Occasionally, dizziness, drowsiness, malaise, sleep disturbances, pruritus and abnormal liver function tests may occur. This product is prohibited for allergies, severe renal insufficiency and infants and young children, and should be used by pregnant and lactating women under medical supervision. It is recommended that patients with chronic superficial gastritis, when taking omeprazole, should use it regularly under the guidance of a doctor, and if they are using other drugs, they should consult a doctor in advance.