Carfentanil or carfentanyl is an analog of the synthetic opioid analgesic fentanyl.
 A unit of carfentanil is 100 times as potent as the same amount of fentanyl, 5,000 times as potent as a unit of heroin and 10,000 times as potent as a unit of morphine. Buy Carfentanil Online
 Carfentanil was first in 1974 by a team of chemists at Janssen Pharmaceutica which included Paul Janssen.
 Health professionals are increasingly concerned about the potential for escalated public health consequences of recreational use