Also known as “gas station heroin,” tianeptine is an unapproved atypical antidepressant with opioid activity at high doses. It has been reported for sale in US gas stations and convenience stores and has the potential to cause adverse opioid-like effects and has been linked to intoxication, overdoses, and death.
Fentanyl misuse typically involves injection or smoking of illicitly manufactured fentanyl (IMF). Illicit fentanyl is most commonly sold on the street as counterfeit tablets or as powders in folded glassine papers. However, law enforcement agencies have found bulk quantities of illicitly manufactured fentanyl (IMF) in liquid form from Arizona and Kentucky. These liquid solutions pose similar dangers as counterfeit pills and powders as they may contain lethal doses and dealers may mix adulterants such as xylazine, cocaine, and other fentanyl analogs into the solution.

