Fentanyl is highly popular and Canada’s deadliest drug. For opioid user who first encounter it as a drug to reduce their pain. Friesan study of 1026 reported that Fentanyl is highly avaible because of doctor who prescribe it and user sell it on the black market. It is also mass produced in China where there is no law that regulate it. Fentanyl is highly lethal because of its potency and can led to respiratory failures according to Nelson. Furthermore, fentanyl is highly destructive for the community because it is sold as less potent drugs which lead to overdoses according to Popova.