Parafluorofuranylfentanyl

para-Fluorofuranylfentanyl (FFF, p-F-Fu-F) is an opioid analgesic that is an analog of fentanyl and has been sold as a designer drug. As with other fentanyl analogues, parafluorofuranylfentanyl has significant side effects including itching, nausea and potentially serious respiratory depression, which can be life-threatening, and it has been linked to numerous deaths from overdose. It falls within the definition of Schedule I drugs in the USA under federal drug analogue legislation, and is specifically listed as a Schedule I drug in North Dakota.