Omeprazole is a proton pump inhibitor, which can effectively inhibit the secretion of gastric acid. It is used in the treatment of peptic ulcers and bleeding, and also in the treatment of various active gastritis, such as acute gastritis, chronic gastritis, and erosive gastritis. Reflux esophagitis can also be treated with this drug. This drug can also be used for preventive treatment of stress ulcers in the stomach caused by diseases or traumas that have a significant impact. Although omeprazole can be a strong cure for stomach problems, but if you take it for a long time, it can not only bring side effects, but also may cause greater harm to the human body. It may cause nephritis, abnormal liver function, rashes, itchy skin and other discomforts. In addition, the omeprazole drug is available in oral tablets and for injection. The use of this drug should be based on the patient’s personal physical condition and the different symptoms of the disease specific decision, the patient can not blindly use their own medication. The specific method of use should be consulted with the doctor and taken according to the doctor’s instructions.