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Xylazine (tranq): The animal sedative in the drug supply

Published January 15, 2025 · 7 min read · Updated April 2026
Reviewed for accuracy by licensed clinical professionals.

Xylazine is a veterinary sedative increasingly found mixed with fentanyl (tranq dope). It is not an opioid, meaning naloxone does not fully reverse its effects.

Why it is dangerous

Xylazine causes severe sedation that naloxone cannot reverse. Skin necrosis (tissue death) at injection sites and even at non-injection sites. Wounds that resist healing and often require amputation. Respiratory depression that compounds fentanyl's effects. Withdrawal symptoms distinct from opioid withdrawal.

The wound crisis

Xylazine causes devastating necrotic wounds that progressively worsen. These wounds are difficult to treat, often become infected, and may require surgical debridement or amputation. The wound crisis is overwhelming emergency departments in affected cities.

Naloxone still matters

While naloxone does not reverse xylazine sedation, it DOES reverse the fentanyl component. Always administer naloxone for suspected overdose even if xylazine is suspected. It may partially improve the situation.

Treatment

Wound care is critical and urgent. Xylazine withdrawal requires specific management (different from opioid withdrawal). Comprehensive addiction treatment addressing polysubstance use.

Authoritative sources

This article references guidelines from: SAMHSA · NIDA · ASAM

Frequently asked questions

What is xylazine (tranq)?
A veterinary sedative mixed with fentanyl that causes severe sedation naloxone cannot reverse and devastating necrotic skin wounds.
Does naloxone work for xylazine?
Naloxone does not reverse xylazine effects but does reverse the fentanyl component. Always give naloxone for suspected overdose.
Why does xylazine cause wounds?
Xylazine causes vasoconstriction and tissue death. Wounds are progressive, difficult to treat, and may require amputation.

Disclaimer: Informational only. Not medical advice. SAMHSA: 1-800-662-4357.