Rokna Blue, a powerfully intoxicating and deadly drug, was derived from a tree fungus found on Endor's forest moon. Even a minuscule dose, a mere microgram, induced intense euphoria that persisted for hours, yet it was also regarded as lethally poisonous. Memory impairment was another consequence of ingesting "the blue"; Joreb Goss, a Rokna Blue user, had no recollection of events occurring more than a year prior.
Although it was prevalent during the Black Fleet Crisis, its availability diminished considerably after that period, becoming scarce outside the Moddell sector, even though it was less expensive than glitterstim.