Xylazine is a veterinary tranquilizer that is not approved for human use, and it is increasingly mixed into the illicit opioid supply, where its most common xylazine street name is “tranq.” Because xylazine is not an opioid, naloxone does not reverse it, which changes how an overdose involving xylazine has to be handled.
Xylazine exposure raises the stakes on everything that follows: the overdose risk, the skin wounds, the withdrawal, and the stabilization after. That is why xylazine addiction treatment in Utah looks different from a standard opioid track.
What Is Xylazine, and Why Is It in the Drug Supply?
Xylazine is a central nervous system depressant that the FDA has approved in veterinary medicine as a sedative with analgesic and muscle relaxant properties, for animals such as horses, dogs, and cats. Pharmacologically, it is an alpha-2 adrenergic agonist, not an opioid, which is why opioid reversal medication has no effect on it. It has never been approved for human use, and it is not currently a federally controlled substance in the United States [1].
In the illegal drug supply, xylazine is added as an adulterant to fentanyl and other synthetic opioids, producing what is often called “tranq dope.” It has also been detected in other illicit drugs. The vast majority of people who use drugs never choose it and have no way of knowing it is there.
Understanding why fentanyl is so dangerous is the starting point, because xylazine almost never appears alone. Headlines call it the “zombie drug,” a label that describes the wounds while stigmatizing the people living with them.
Naloxone Does Not Reverse Xylazine, but Always Give It Anyway
Naloxone does not reverse xylazine. Give naloxone anyway. Because xylazine is almost always combined with opioids like fentanyl, naloxone still reverses the opioid part of the emergency, and that is frequently what saves the life [2].
If you suspect an opioid overdose, whether or not xylazine is involved:
- Call 911 immediately. Say the person is unresponsive and not breathing normally.
- Administer naloxone. More than one dose may be needed.
- Give rescue breaths. Naloxone may not restore normal breathing when xylazine is present, so breathing support matters.
- Monitor breathing after giving naloxone, and stay with the person until first responders arrive.
Never delay giving naloxone to confirm the presence of xylazine. Nothing in the field tells you what is in someone’s system, and waiting costs lives. Anyone close to a person at risk should carry naloxone.
DEA Reports Widespread Threat of Fentanyl Mixed With Xylazine
In a public safety alert issued March 20, 2023, the Drug Enforcement Administration reported that it had seized xylazine and fentanyl mixtures in 48 of 50 states. The DEA Laboratory System found xylazine in roughly 23 percent of fentanyl powder and 7 percent of fentanyl pills seized in 2022 [3].
Weeks later, the Office of National Drug Control Policy designated fentanyl adulterated or associated with xylazine an emerging threat to the United States, citing significant and rapidly worsening negative consequences for public health. It was the first use of that designation authority since Congress created it in 2018 [4].
CDC data show the same trend in overdose deaths. Across 20 states and the District of Columbia, the monthly percentage of deaths involving fentanyl with xylazine detected rose from 3 percent in January 2019 to 11 percent in June 2022. Because the illicit drug supply shifts constantly, xylazine detection varies by region, and your local drug supply may look nothing like the national picture.
Effects of Xylazine on the Body
Xylazine has never been studied in humans the way an approved medication would be, but agencies and emergency departments now see a consistent pattern of xylazine exposure:
- Heavy, prolonged sedation that outlasts the opioid, sometimes progressing to unconsciousness
- Slow breathing
- Dangerously low blood pressure
- Slowed heart rate
- Severe skin wounds that can become infected
- Severe withdrawal symptoms
- Death
Stacking a non-opioid depressant on top of fentanyl means two things suppress breathing at once, and when other drugs or alcohol are present, the danger climbs further. That leaves a person at higher risk during any overdose, and it is part of why xylazine-related overdoses are harder to reverse.
Xylazine Wounds: Why They Need Real Medical Care
Xylazine-associated wounds are open skin and soft tissue sores that can appear anywhere on the body. NIDA notes they show up at injection sites but also frequently emerge elsewhere, including in people who smoke or snort drugs rather than inject them, and the exact mechanism is still being studied.
These wounds do not behave like ordinary cuts or abscesses. Left untreated, severe skin ulcers can progress to necrosis, serious infection, and amputation, and they can become life-threatening.
Do not treat xylazine wounds at home. Go to an emergency department or see a healthcare provider. These skin wounds pose real management challenges and may need specialized wound care, though the CDC notes that when they are treated early, wounds can usually be managed with basic wound care techniques. Early medical attention is the difference that matters most.
Healthcare providers and first responders are increasingly trained to recognize these wounds in patients exposed to xylazine. Be honest about your drug use, because a clinician cannot treat what they do not know about.
Xylazine Withdrawal Is Not the Same as Opioid Withdrawal
Repeated xylazine use can lead to physical dependence in humans, with severe withdrawal symptoms after abrupt discontinuation. Xylazine withdrawal is a separate problem layered on top of opioid withdrawal, and it is not well managed by opioid protocols alone. People describe intense anxiety, irritability, dysphoria, agitation, restlessness, and an inability to sleep, on a timeline that does not match what they expect from the opioid withdrawal timeline for fentanyl.
Buprenorphine and methadone treat the opioid side of the picture. They do not treat xylazine dependence, and no medication is currently FDA-approved to do so. Clinicians in addiction medicine manage xylazine withdrawal symptomatically, and that requires trained eyes and around-the-clock monitoring.
This is the strongest argument there is for medically supervised detox. When two withdrawal syndromes run at once, the discomfort is worse, and the medical risk is higher. Supervision is not weakness. It is the disciplined way through the hardest stretch.
Harm Reduction: Xylazine Test Strips and Other Strategies
Xylazine test strips are commercially available and are distributed by many harm reduction organizations, alongside fentanyl test strips. They are a safety tool: knowing what is in a local supply lets people take precautions and get help sooner. Test strips do not make anything safe, and they are not a substitute for treatment.
Other harm reduction strategies public health agencies recommend include carrying naloxone and never using alone, so someone is there to call 911 and give naloxone.
Treatment and Recovery After Xylazine Exposure
Xylazine involvement usually means a longer, harder stabilization and a longer runway afterward. Detox takes more days, wounds need ongoing treatment, and sleep, appetite, and mood take weeks to settle. A 30-day program is a short window for a body that has been through this.
At Mountain Valley Recovery, men enter a 9 to 12 month program on a working ranch in Holden, Utah, where medical stabilization is the beginning, not the whole plan. Ranch work, animal care, and equine therapy rebuild a daily rhythm while evidence-based clinical care addresses the substance use disorder underneath. Every graduate earns a trade certification, so a man leaves with a skill and a direction.
Xylazine is one part of a larger picture. Start with our guide to opioid addiction treatment in Utah.
What Is Xylazine? Frequently Asked Questions
What is xylazine used for?
Xylazine is FDA-approved as a sedative, muscle relaxant, and pain reliever in veterinary medicine, for animals such as horses, dogs, and cats. It has no approved human use.
Is xylazine the same as ketamine?
No. Both are used as sedatives in veterinary medicine, but they are different drugs with different effects. Ketamine is a federally controlled substance; xylazine is not.
What are xylazine-associated wounds?
They are open skin and soft tissue wounds linked to repeated xylazine use. They can appear away from injection sites and can worsen quickly without medical care.
Do xylazine wounds heal?
They can, particularly when treated early by a healthcare provider. Untreated wounds can progress to severe infection or amputation, which is why home care is not an option.
How long does xylazine withdrawal last?
There is no established timeline, and it varies by person and by what other substances are in the drug supply. Because xylazine withdrawal and opioid withdrawal overlap, medically supervised detox is the safest way through.
Sources
- National Institute on Drug Abuse. “Xylazine.” https://nida.nih.gov/research-topics/xylazine
- Centers for Disease Control and Prevention. “What You Should Know About Xylazine.” https://www.cdc.gov/overdose-prevention/about/what-you-should-know-about-xylazine.html
- U.S. Drug Enforcement Administration. “DEA Reports Widespread Threat of Fentanyl Mixed with Xylazine.” https://www.dea.gov/alert/dea-reports-widespread-threat-fentanyl-mixed-xylazine
- Office of National Drug Control Policy. “Biden-Harris Administration Designates Fentanyl Combined with Xylazine as an Emerging Threat to the United States.” https://bidenwhitehouse.archives.gov/ondcp/briefing-room/2023/04/12/biden-harris-administration-designates-fentanyl-combined-with-xylazine-as-an-emerging-threat-to-the-united-states
- Substance Abuse and Mental Health Services Administration. “SAMHSA National Helpline.” https://www.samhsa.gov/find-help/helplines/national-helpline
