Pioglitazone belongs to which class of diabetes medications?

• A. Biguanide
• B. Sulfonylurea
• C. Thiazolidinedione
• D. Alpha-glucosidase inhibitor

Answer: (C)

Understanding how diabetes meds work helps place pioglitazone in its class. Pioglitazone is a thiazolidinedione, a group that activates PPAR-gamma receptors to boost insulin sensitivity, especially in fat, muscle, and liver. By making body tissues respond better to insulin, it helps lower blood glucose in type 2 diabetes.

This differs from other classes: biguanides like metformin mainly reduce glucose production by the liver and improve insulin sensitivity through other pathways; sulfonylureas stimulate the pancreatic beta cells to secrete more insulin; alpha-glucosidase inhibitors slow the digestion of carbohydrates in the gut to blunt post-meal glucose spikes.