Xyrem(sodium oxybate), also known under the name Alcover (in Italy used for alcohol addiction treatment), is the only FDA approved drug to treat Narcolepsy and now deemed the standard of care for Narcolepsy. Xyrem treats BOTH cataplexy and EDS, meaning you do not need to have cataplexy to take this drug. I am N w/o C and I take Xyrem and I find it extremely beneficial. This is the only drug "on label" to treat cataplexy.
PWN are unable to actually get rest while they sleep because our brains are don't actually stay in the restful part of the sleep cycle. Xyrem has agonist actions at GHB receptors and partial agonist actions at GABA-B receptors meaning Xyrem forces our brains into the restful sleep stage, improving slow-wave sleep at night. The idea is to better the quality of sleep at night which in turn eases the EDS and cataplexy symptoms we exhibit.