Gastritis taking omeprazole a few days can be good is mainly related to the type of gastritis, and can not be generalized; if it is acute gastritis, it takes 1~2 days; chronic non-atrophic gastritis, usually take 1~2 weeks; if it is chronic atrophic gastritis, it may take more than a month. 1. Acute gastritis: acute gastritis is generally due to acute inflammation of the gastric mucosa caused by stress or drugs, such as alcoholism, the use of non-steroidal anti-inflammatory drugs; after the removal of undesirable triggers, oral omeprazole inhibit gastric acid secretion, which is conducive to the promotion of gastric mucous membrane repair, is generally relatively fast, about 1~2 days can achieve the effect of pain relief. 2. Chronic non-atrophic gastritis: most of this type of gastritis will be combined with an increase in gastric acid secretion, you can choose omeprazole to inhibit gastric acid secretion, to protect the gastric mucosa, generally need to be taken for 1~2 weeks. In addition, it is also necessary to pay attention to whether there is a combination of Helicobacter pylori infection, if the combination of the infection of this bacterium, you need to use a combination of antibiotic treatment, such as amoxicillin, furazolidone, the general course of treatment is 10 ~ 14 days. 3. Chronic atrophic gastritis: this type of gastritis is an autoimmune disease, the use of drugs to inhibit gastric acid secretion is ineffective, it may take 1~2 months to slow down the effect. If combined with erosion can choose to take omeprazole, also need to cooperate with the improvement of gastrointestinal dynamics of the drug, such as domperidone tablets, if necessary, also need to be infused with vitamin B ₁ ₂ and so on. Gastritis patients should maintain good habits of life and work, avoid smoking, avoid staying up late, and eat regularly; if there is any discomfort, they should consult a doctor in time. Drugs should be used under the guidance of a doctor.