Description: Gabapentin is prescribed -- usually in combination with other medications -- for the treatment of seizure disorders, though its anticonvulsant mechanism is not known. It is sometimes prescribed for the management of neuralgia (nerve pain) and has been prescribed off-label for the treatment of mood disorders, anxiety, and tardive dyskinesia (a neurological syndrome caused by the long-term use of neuroleptic drugs). (1-(aminomethyl)cyclohexanacetic acid)