Bioequivalence assessment of two formulations of empagliflozin in healthy adult subjects

The objective of the study was to evaluate the bioequivalence (BE) between Izaban® (test) and Jardiance® (reference) empagliflozin 25 mg, oral tablets, in healthy adult subjects. A randomized, open-label, two-sequence, and two-period crossover comparative oral bioavailability study was conducted on healthy adult subjects. It was tested BE in vivo using a comparative pharmacokinetic (PK) evaluation. Serial blood samples were collected up to 72 h following oral administration of the study drugs, plasma concentrations of empagliflozin were using liquid chromatography mass spectrometry (LC-MS-MS) method. The test and reference drug products were considered bioequivalent when the geometric means of the test (T)/reference (R) ratios and 90% confidence intervals (CIs) fall within the range of 80.00–125.00%. For PK parameters, % T/R ratios and 90% CIs were Cmax: 105.11% (100.28–110.18%), area under curve (AUC0-t): 103.25% (99.62–107.00%), and AUC0-∞ 102.71% (99.26–106.28%). Our study demonstrated in vivo BE between the two empagliflozin formulations tested in healthy subjects under fasting conditions.