TALK TO YOUR KIDS ABOUT DRUGS. ONLY ONE CAN KILL THEM. It may look like candy!! The "Death pill," fentanyl is disguised as other drugs and linked to the spike in US overdoses. Fentanyl is 50 to 100 times as powerful as morphine, and often users of Xanax and other pills don’t know they’re taking it. Users can purchase fentanyl nasal sprays, geltabs, and even U-47700 – a research opiate – in the form of Pez candies.