The purpose of this study is to compare the relative bioavailability of 800 mg Gabapentin Tablets by Purepac Pharmaceutical Co. with that of 400 mg (2 x 400 mg) NEURONTIN® by Parke-Davis following a single oral dose (1 x 800 mg tablet) or (2 x 400 mg capsules) in healthy adult male volunteers under non-fasting conditions, and will compare the differences in plasma levels after dosing the test formulation with and without food.