‘Speedballing’ drug trend is becoming ‘increasingly lethal’: expert

There’s a new twist in the devastating opioid crisis.

The US is said to be in the fourth wave of this epidemic, marked by the increased use of several substances at once, specifically stimulants and fentanyl.

This toxic combo is known as a “speedball” — it dates back to World War I, when it was used to treat soldiers’ pain and boost their energy.