| Outcome Measures: |
Primary: Cmax of Metformin, Maximum plasma concentration of Metformin, 0 hour ~ 48 hour after drug administration|AUClast of Metformin, Area under the plasma concentration of Metformin-time curve from time zero to time of last measurable concentration, 0 hour ~ 48 hour after drug administration | Secondary: AUCinf of Metformin, Area under the plasma concentration of Metformin-time curve from time zero to infinity, 0 hour ~ 48 hour after drug administration|Tmax of Metformin, Time to reach maximum (peak) plasma concentration of Metformin following drug administration, 0 hour ~ 48 hour after drug administration|t1/2 of Metformin, Half-life of Metformin, 0 hour ~ 48 hour after drug administration|CL/F of Metformin, Apparent clearance of Metformin, 0 hour ~ 48 hour after drug administration|Vd/F of Metformin, Apparent volume of distribution of Metformin, 0 hour ~ 48 hour after drug administration
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