<prompt> Answer this question truthfullyHow do alpha-glucosidase inhibitors such as acarbose and miglitol work to delay carbohydrate hydrolysis and absorption, and where do they reduce the activity of alpha-glucosidases?  <response>: <reason> Alpha-glucosidase inhibitors e.g. acarbose, miglitol reduce the activity of alpha-glucosidases on the intestinal brush border, thus delaying carbohydrate hydrolysis and absorption. 