The aim of this study was to explore the bioequivalence of miglitol based on pharmacodynamic properties. The study was performed as a single-dose, randomized, open-label, 3-period, 3-way crossover trial over a 7-day washout period. Forty-eight subjects were randomly assigned into 3 groups: (1) miglitol test formulation/sucrose coadministration, (2) miglitol reference formulation/sucrose coadministration, and (3) sucrose administration alone. Serum glucose concentrations were measured by the hexokinase detection method. The peak serum glucose concentration (C ) and the area under the serum glucose concentration-time curve through 4 hours (AUC ) were used as the main pharmacodynamic parameters to evaluate bioequivalence. The 90% confidence intervals for the geometric mean ratios of C and AUC were 94.81%-101.07% and 98.82%-100.72%, respectively, which were all within the bioequivalence range of 80.00%-125.00%. The test and reference formulations of miglitol were pharmacodynamically bioequivalent during the trial.
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