and synthetic opioids like hydrocodone, oxycodone, and methadone. Both types have similar effects. Certain illegal drugs, such as heroin, are also opioids. Methadone is an opioid that is often ...

Of 89 dolphins tested in the Gulf of Mexico, 30 contained some form of pharmaceutical—and 18 had fentanyl in their blubber.

Carfentanil can be injected and is frequently mixed with other opioids or heroin, Tuell said. In a powder form, it can be inhaled. “Inhaling the drug can be quickly risky because it can enter ...