Gabapentin is an anti-seizure medicine that helps to treat parietal seizures in epilepsy. It is used to treat restless leg syndrome and nerve pain. Gabapentin is available as a tablet, capsule, and oral solution. It is also used with other seizure medicines for partial onset seizures in patients 3 years and older. Store tablets and capsules at room temperature away from moisture and heat. Store the liquid medicine in the refrigerator, do not freeze.