<unk>  is a central nervous system agent that is FDA approved for the treatment of primary restless legs syndrome and postherpetic neuralgia.   Common adverse reactions include somnolence, sedation dizziness, and headache.
Gabapentin Enacarbil
Benzodiazepine
Phenothiazine
Methylphenobarbital
Felbamate
Carisbamate
Methadone 
Phenobarbital 