Acarbose tablets can be divided into two dosage forms, namely 50mg and 100mg. The number of tablets to be taken in a day varies with the dosage form, and you should consult your healthcare professional for details. Acarbose is used for type 2 diabetes and to lower postprandial blood glucose in people with impaired glucose tolerance. Generally, the recommended initial dose is 50mg once, three times a day, the 50mg dosage form is 3 tablets and the 100mg dosage form is 1.5 tablets. Later, the dose can be gradually increased to 100mg 3 times a day. If the therapeutic effect is not obvious after 4 to 8 weeks of medication, the dosage can also be gradually increased under the guidance of the doctor. Common adverse reactions to acarbose are flatulence, diarrhea, gastrointestinal and abdominal pain. It should be noted that the use of this drug is prohibited in patients who are allergic to the components of the drug or have severe renal impairment. And the drug should be used strictly under the guidance of a doctor.