Comparative efficacy and safety of DPP-4 inhibitors and α-glucosidase inhibitors as add on therapy in type 2 diabetes

Rajit Sahai, Taruna Sharma, Dilip C. Dhasmana, Nidhi Kaeley


Background: Diabetes mellitus (DM) is a spectrum of metabolic disorders as a consequence of different pathogenic mechanisms resulting in hyperglycemia. A genetic predisposition to develop β-cell dysfunction synergizes with insulin resistance to lead to type 2 DM. Adequate management of type 2 DM requires institution of non pharmacological treatment followed by pharmacological treatment. Monotherapy is started initially followed by combination therapy (dual/triple). Sitagliptin, a DPP-4 inhibitor and voglibose, an α-glucosidase inhibitor has been implicated as an add on therapy to metformin and glimepiride. So, we aimed to assess the efficacy and safety of the sitagliptin and voglibose as add on therapy to metformin and glimepitide in type 2 DM.

Methods: This open label randomized control trial was conducted in the department of Pharmacology among patients attending medicine OPD of a tertiary care hospital. 80 patients were randomly divided into two groups of 40 patients each. group A:sitagliptin + metformin + glimepiride and group B:voglibose + metformin + glimepiride. Patients were followed every week for a period of 12 weeks. Data was analysed using paired t test, unpaired t test and chi square test.

Results: There was a significant decrease in HbA1c, FPG and PPG in both the groups. Intergroup comparison at 4, 8 and 12 weeks showed a better improvement in glycemic control in group A as compared to group B.

Conclusions: Sitagliptin showed a better glycemic control than that with voglibose in patients with uncontrolled type 2 DM on metformin and glimepiride.


Type 2 diabetes, Sitagliptin, Voglibose

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