Scientists have never found a medicine to help crack users who want to decrease their consumption. Canadian researchers think cannabis might be the answer.
Carfentanil is an ultra-potent synthetic opioid. Its only legitimate use is in veterinary practice for large animals such as elephants, but it sneaks into heroin shipments to increase its potency.
It is thought that in 2002 fentanyl, or a drug based on fentanyl, was used by Russian special forces to disable Chechen rebels after a four day stand off in the Dubrovka theatre in Moscow.
Prince’s death was recorded as accidental. Accidents are common when it comes fentanyl, a powerful pain killer 100 times stronger than morphine.