ChEBI: Gabapentin is a gamma-amino acid that is cyclohexane substituted at position 1 by aminomethyl and carboxymethyl groups. Used for treatment of neuropathic pain and restless legs syndrome. It has a role as an anticonvulsant, a calcium channel blocker, an environmental contaminant and a xenobiotic. It derives from a gamma-aminobutyric acid.NCI Thesaurus (NCIt): Gabapentin is a synthetic analogue of the neurotransmitter gamma-aminobutyric acid with anticonvulsant activity. Although its exact mechanism of action is unknown, gabapentin appears to inhibit excitatory neuron activity. This agent also exhibits analgesic properties. (NCI04)