The geometric mean ratios ( 90 % confidence interval ) of the test drug/reference drug for gabapentin were 103.15 % ( 90.38 % -117.72 % ) for AUCt , 103.53 % ( 90.78 % -118.07 % ) for AUC ( inf ) , and 108.06 % ( 96.32 % -121.24 % ) for Cmax .