oxycodone
ethanol
oxycodone and ethanol
abstinence
oxycodone and hydrocodone
hydromorphone
diaactylmorphine
cocaine
diaactylmorphine and cocaine
dextromethorphan
methylenedioxymethamphetamine
cocaine
abstinence
ketamine
methoxetamine
fentanyl
diaactylmorphine and ketamine
hydromorphone
diaactylmorphine
alprazolam
ethanol
alprazolam, ethanol, and lorazepam
abstinence?