Biden’s drug czar declares fentanyl laced with animal tranquilizer an ‘emerging threat’ facing U.S.

President Joe Biden’s drug czar on Wednesday declared that fentanyl mixed with xylazine, an animal tranquilizer known as “tranq” that has been linked to a rising number of overdose deaths across the U.S., represents an “emerging threat” facing the nation.

The declaration from Dr. Rahul Gupta, the director of the Office of National Drug Control Policy, requires the Biden administration to develop a federal plan to address the crisis. The government must now publish a response plan within 90 days and send implementation guidance to agencies within 120 days, among other steps.