Alpha-glucosidase inhibitors (AGIs), sometimes referred to as starch blockers, are a less popular class of oral anti-diabetic drugs used for diabetes mellitus type 2 that work by preventing the digestion of carbohydrates (such as starch and table sugar). For the best results, you should take these drugs before meals. The key benefit of AGIs is that they do not cause hypoglycemia (low blood sugar).These drugs include:

List of Alpha-glucosidase inhibitors
https://www.drugs.com/drug-class/alpha-glucosidase-inhibitors.html

Classes of Medications