Top Definition
The most powerful opiate narcotic known to man. 5000x as powerful as pure herion.
The park ranger accidentally killed the elephant with a carfentanil overdose.
by John Mann January 12, 2005

Under the brand name Wildnyl

A super concentrated form of Fentanyl

10000 times more potent than Morphine


100 times more potent than Fentanyl

used to sedate large animals
We will now feed the 1000 pound bear with a microgram of Carfentanil to put it to sleep.
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