It does not say that Acarbose must not be taken for a long time. Long-term consumption of acarbose may produce gastrointestinal discomfort and other adverse reactions, the specific time to take the medicine should follow the doctor’s instructions. Diabetic patients take acarbose in order to reduce postprandial blood glucose. If the postprandial blood sugar control is good, you can gradually stop the drug under the guidance of the physician, so as not to cause gastrointestinal flatulence, diarrhea and other discomforts caused by long-term use. Acarbose belongs to the alpha-glucosidase inhibitor, which can slow down the rate of carbohydrate absorption, and is generally used to reduce postprandial hyperglycemia. It is indicated for use in conjunction with dietary control in the treatment of type 2 diabetes mellitus and for lowering postprandial blood glucose in people with impaired glucose tolerance. The dosage is to be swallowed whole immediately before a meal or chewed with the first few bites of food, and the dosage varies from person to person. Common adverse reactions to acarbose include flatulence and bowel sounds, occasional diarrhea, and rarely, abdominal pain. Gastrointestinal side effects may worsen if diet is not controlled. If symptoms of severe discomfort persist despite dietary control, consult a physician to adjust use. Skin allergic reactions such as erythema, rash and urticaria may occur in isolated cases. It is not recommended for people who are allergic to acarbose and/or inactive ingredients, people under 18 years of age, patients with chronic gastrointestinal disorders with significant digestive and absorption disorders, patients with disorders that may worsen intestinal flatulence such as intestinal obstruction and intestinal ulcers, severe renal impairment, pregnant women, and breastfeeding women. This drug needs to be used under the guidance of a doctor to avoid the adverse consequences of self-application.