You are using an older browser version. Please use a supported version for the best MSN experience.

Uncovering the grim truth about 'rainbow fentanyl' as overdose cases surge through the US

Fentanyl is a synthetic opioid that is 50 times stronger than heroin and 100 times more potent than morphine, and more teens are overdosing on it.

More From USA TODAY

More From USA TODAY

image beaconimage beaconimage beacon