fentanyl

Fentanyl is 50 times more powerful than heroin and has become extremely popular among opioid addicts in the U.S.

Fentanyl is trafficked from Mexico to the U.S. using courier services, cars, buses, cargo transport, and airplanes

In 2015 the substance killed 33 thousand in the US alone

The street version, which is mostly made in China or Mexico, comes in various forms - tablets, patches, powder, spray.

According to The New York Times, Mexican cartels have their own labs to produce fentanyl, and also receive shipments from China.