This study compared the relative bioavailability (rate and extent of absorption) of the test Gabapentin tablets 800 mg by Ranbaxy Laboratories Limited to the reference Neurontin ® 800 mg tablets of Parke Davis Pharmaceuticals Ltd., distributed by Parke Davis, division of Warner-Lambert Co. in 28 healthy, adult subjects (21 males and 7 females) under fasting conditions using randomized, two-way crossover design.