In clinical practice, there are many patients with chronic gastritis. If stomach pain is observed and gastritis is suspected, this condition is mostly treated with oral medication because gastritis itself is a common disease. Infusion therapy is used for those whose diets are poor and who find it difficult to eat; this impacts their ability to take medication orally, and such individuals might consider infusion therapy. However, it is still recommended to take medication orally whenever possible. Additionally, if gastritis is accompanied by mucosal erosion or severe ulcers, intravenous infusion may be considered, switching to oral medication after a few days. (Medication should be used under the guidance of a doctor.)