Omeprazole is recommended to be taken 1-2 times a day depending on the disease to be treated and the condition, and the specific dosage and method of administration should be under the guidance of a gastroenterologist. Omeprazole is commonly used in the treatment of acute and chronic gastritis, reflux esophagitis, peptic ulcer and other diseases, and has the effect of inhibiting gastric acid secretion. The half-life of the drug is 6-8 hours, so it can be taken once a day for the treatment of gastritis and GERD, and twice a day for the treatment of peptic ulcer, and intravenous administration is recommended for severe cases. In addition, omeprazole can also be taken in combination with bismuth and antibiotics for the treatment of H. pylori infection, usually taken twice daily. Omeprazole should be contraindicated in people with severe renal insufficiency, allergy to drug ingredients, and in infants and children. If you are taking omeprazole along with other drugs, you should inform your doctor in time to avoid any interaction between the drugs.