Miglitol tablets work as a hypoglycemic agent, and side effects include gastrointestinal reactions, skin rashes, and decreased serum iron levels. Miglitol Tablet exerts anti-hyperglycemic effect by inhibiting α-glucosidase on the intestinal mucosa. When diabetic patients take this drug, the absorption of glucose can be delayed by inhibiting this enzyme, thus reducing postprandial hyperglycemia. Clinically, this drug is mainly used in conjunction with dietary control for blood glucose control in patients with type 2 diabetes. The most common side effects of this drug are gastrointestinal reactions, such as abdominal pain, diarrhea, flatulence, etc. Some patients may also experience adverse reactions such as skin rashes and lowered serum iron levels, but most of them are temporary. If the discomfort persists unrelieved or is more serious, timely medical consultation should be sought. It should be noted that the use of Miglitol tablets is prohibited for those who are allergic to any of the components of this drug, as well as patients with diabetic ketoacidosis, colonic ulcers, inflammatory bowel disease, incomplete intestinal obstruction, tendency to intestinal obstruction, and chronic intestinal diseases accompanied by obvious gastrointestinal dysfunction. Patients should use Miglitol tablets in accordance with the doctor’s instructions, avoiding self-medication, so as not to induce side effects.