Gliclazide tablets are generally used orally as prescribed by the doctor, starting with a small dose, and then adjusting the dosage according to the specific blood glucose level, and then switching to a daily maintenance dosage after glycemic control, and elderly patients need to reduce the dosage as appropriate. Gliclazide Tablet is an oral hypoglycemic drug, belonging to the sulfonylurea class of drugs, mainly through selective action on the pancreatic islet B cells, to promote insulin secretion, in order to play the purpose of lowering sugar. It is mainly suitable for patients with type 2 diabetes mellitus whose dietary therapy is insufficient to control blood glucose. However, gliclazide tablets can have some adverse reactions, such as hypoglycemia, vomiting, diarrhea, erythema, anemia, etc. Most of the symptoms will disappear after stopping the drug. Gliclazide is contraindicated in patients who are allergic to Gliclazide, insulin-dependent diabetes mellitus, severe hepatic or renal insufficiency, breastfeeding, application of miconazole therapy, and porphyria. Patients requiring treatment with gliclazide tablets are advised to take them under medical supervision.