Glucobay is a brand name for the drug Acarbose. It is an alpha-glucosidase inhibitor used to treat type 2 diabetes mellitus. Acarbose works by slowing down the digestion of carbohydrates, which helps to control the blood sugar levels in the body. It is typically used in combination with a proper diet and exercise program to manage diabetes. The usual recommended dose of Glucobay is 50mg three times a day, taken with the first bite of each main meal. The dose may be increased or decreased based on the patient's blood sugar levels and tolerance. Side effects of Glucobay may include stomach upset, gas, diarrhea, and liver problems.