How long does it take to treat gastritis? The treatment time is determined by the severity of the disease. I. Acute gastritis, treated for 3-5 days can be basically cured, usually no more than half a month, and is not easy to relapse after treatment. Second, chronic superficial gastritis, treated with traditional Chinese medicine or western medicine, usually about a month, to control the symptoms, after which you can also continue to take soup or Chinese medicine, consolidate treatment. Third, chronic atrophic gastritis, generally 3-6 months as a course of treatment, or even longer. Dr. Qin experienced that it does not take too long to take the medicine simply to improve the symptoms. If the pathological changes of glandular atrophy, intestinal epithelial hyperplasia or atypical hyperplasia are to be improved, a longer course of treatment is needed, and consolidation therapy and follow-up are required.