Comparison of efficacy between canagliflozin and teneligliptin as add-on therapy to metformin and glimepiride on plasma glucose levels along with blood pressure and lipid levels in patients with type 2 diabetes mellitus

Background: Despite of several guidelines metformin and glimepiride remains the first prescribed drug in most people with diabetes. Very often canagliflozin and teneligliptin remain the third prescribed OHA. Efficacy of teneligliptin and canagliflozin as solo drug or in combination with other single OHA’s on glycaemic parameters, lipid profiles & blood pressure is already established. But their efficacy on above parameters when used as third drug next to metformin and sulfonylurea is still not investigated. Aims and objectives: Aim of this study is to compare glycaemic and non-glycemic effects of canagliflozin and teneligliptin as third line drug. Objective is to establish their multiple pleotropic effects at this position. Methods: Subjects with uncontrolled glycaemic parameters with hypertension and diabetic dyslipidaemia already on half maximal doses of metformin and glimepiride were enrolled in the study. Out of 87 selections, 45 were prescribed canagliflozin 100 mg/d and to 42 subjects, teneligliptin 20mg/d, each for 24 weeks. Effects over HbA1c, fasting and post prandial plasma glucose, systolic and diastolic blood pressures, HDL’c and triglycerides were observed pre and post intervention. Results: As a third drug both canagliflozin and teneligliptin show significant reduction in HbA1c (1.5 versus 1.6%), fasting (-20.2 versus -28.8 mg %), and post prandial (-39.9 versus – 58.5mg %). Effects over systolic (4 mmHg versus 1.1 mmHg) and diastolic BP (3.1 mmHg versus 0.2 mmHg) was clinically and statistically significant (p = 0.3 and 0.1) respectively in both groups. A statistically insignificant (9.6 versus 4.1 mg%; p =) reduction in Triglycerides but significant (7.6 versus 1.2; p <0.0001) increase in HDL’c was observed. Conclusion: Canagliflozin and teneligliptin, both retains their glycaemic and non-glycaemic benefits even when used as third OHA for diabetes management. Canagliflozin scores better for comorbid hypertension and diabetic dyslipidaemia.