Glitterstim was an illicit substance with addictive properties. It was twice as potent as ryll. Taggart was a smuggler who specialized in moving shipments of glitterstim spice. When Brand asked her fellow Twilight Company member Hazram Namir if he was being too hard on their captain, "Howl," Namir replied that Howl was a genius, but also as mad as a glimmerstim addict.
Spice spiders produced webs of pure glitterstim.
Glitterstim was first mentioned in Star Wars canon in Alexander Freed's novel Battlefront: Twilight Company. It first appeared in a flashback in the 2021 audio drama The High Republic: Tempest Runner.
Glitterstim first appeared in the Legends continuity in the novel Jedi Search, which described it as a powerful variant of the drug known as spice that was mined on Kessel.