Gabapentin is an FDA-approved medication used to treat epilepsy. Gabapentin is a prescription medication known as a gamma-aminobutyric acid (GABA) analog. Gabapentin is used to help control partial seizures in the treatment of epilepsy. Gabapentin side effects are vision changes, clumsiness, unsteadiness, dizziness, drowsiness, and sleepiness. You Can Buy Gabapentin Online to treat your anxiety.