Teneligliptin is a unique DPP-4 inhibitor featuring a distinct multi-ring ("J-shaped") chemical structure composed of five consecutive rings. This complex stereochemistry allows it to bind tightly to the S1, S2, and S2 extensive subsites of the DPP-4 enzyme, providing highly potent and long-lasting competitive inhibition. By permanently preserving circulating active GLP-1 and GIP levels throughout the day, it optimizes natural insulin secretion in response to food intake, controls fasting blood glucose, and demonstrates a balanced route of excretion through both renal and hepatic channels.