Table 1.

List of keywords used to obtain Twitter data used in model building.

Drug class	Drug name	Slang term
Opioid products	Morphine, Oxycodone, Vicodin, Oxymorphone, Codeine	Pain killer, Morph, Demmies, Dillies, Oxy, Miss Emma, Vikes, O bomb, Octagons, Captain Cody, Percs, Oxycet, Hibilly heroin, Oxycotton, Oxy 80s, Sizzurp, Purple drank, Blue heaven, Doors and floors, Rushbo, Waston-387
Other controlled substances	Xanax, Adderall, Ecstasy, or MDMAa	Xannax, Adderal, Happy pills
Synthetic opioids	Fentanyl	Goodfella, China white, Fetty, FettyShine, Murder 8, Tango, and cash

^aMDMA: 3,4-methylenedioxy-methamphetamine.