Xylazine (‘Tranq’): What It Is and How Treatment Works

Xylazine is a veterinary sedative, not an opioid, that increasingly contaminates the illicit fentanyl supply, where it is known as “tranq.” It deepens and prolongs sedation, does not respond to naloxone, and can cause severe skin wounds. Its presence complicates standard opioid detox and calls for medically supervised treatment rather than an ordinary withdrawal protocol.

You have found something. A word you did not recognise on a harm-reduction leaflet, or a sore on a family member’s arm that will not heal, or a test strip result that came back positive for more than one thing. You searched “xylazine” because the drug your loved one is using is no longer the drug you thought you understood. That instinct is correct. The supply has changed, and the old assumptions about what an opioid problem looks like no longer hold.

Maybe you have already been through one detox. Maybe naloxone was used and it did not seem to work the way everyone said it would. Maybe there is a wound that the person keeps hiding, and every conversation about a clinic ends in a refusal because they are frightened of how sick withdrawal will make them feel. None of that means treatment has failed or cannot work. It usually means xylazine is in the picture, and xylazine changes the clinical problem.

At Holina we treat people whose opioid use now involves xylazine almost as a matter of routine, because it has become that common in the supply. This article is written for whoever is reading it: the person exposed to xylazine themselves, and equally the parent, partner or friend trying to make sense of it on someone else’s behalf. Both of you are the intended reader here. It explains what xylazine is, why it is showing up, why it makes standard opioid detox harder, and what medically supervised treatment for someone exposed to it actually involves.

What is xylazine, and why is it in the drug supply?

Xylazine is a sedative and muscle relaxant developed for veterinary use in animals such as horses and cattle. It is not approved for people, and it is not an opioid, which is precisely why it behaves so differently from the drugs treatment services were built around.

It has entered the human drug supply as an adulterant, most often mixed into illicitly manufactured fentanyl. According to the US Drug Enforcement Administration, in 2022 roughly 23% of fentanyl powder and 7% of fentanyl pills it seized contained xylazine, and xylazine-fentanyl mixtures were identified in 48 of 50 states (DEA). It is cheap, it prolongs the sedating effect of fentanyl, and most people who take it never chose it. They bought what they believed was heroin or fentanyl and received a combination.

Why does xylazine make an overdose harder to reverse?

Because xylazine is not an opioid, naloxone does not reverse its effects. Naloxone still needs to be given for any suspected overdose, since xylazine almost always sits alongside fentanyl, but it will only reverse the opioid part.

This is the detail that catches families and even first responders off guard. When naloxone is administered, the fentanyl is blocked and breathing may improve, but the person can remain heavily sedated because the xylazine is untouched. There is no equivalent rescue medication licensed for xylazine in humans; the guidance from the National Institute on Drug Abuse is supportive care, including rescue breathing and positioning, while the opioid component is reversed (NIDA). This is why an overdose that involves xylazine can look “half-reversed” and why continued monitoring matters even after naloxone appears to have worked.

The wounds xylazine causes, and why they are different

One of the most recognisable signs of xylazine exposure is a pattern of severe skin wounds. These ulcers are often large, slow to heal, and can appear away from any injection site, sometimes progressing to deep tissue damage. In a study conducted in Puerto Rico, people who used xylazine had a far higher prevalence of skin ulcers than those who did not, 38.5% compared with 6.8% (peer-reviewed report).

These wounds are not simply an infection to be cleaned and dressed once. They tend to worsen while a person keeps using, they are painful, and in severe untreated cases they can threaten the limb. For many people the wound is also the source of deep shame, which is often why they keep it hidden and why it becomes a barrier to seeking care rather than a reason to seek it. Wound assessment and ongoing dressing are a standard part of residential care for anyone exposed to xylazine, not an afterthought.

Why does xylazine complicate opioid detox?

Xylazine adds a second, non-opioid dependence on top of the opioid one, so a detox planned only around opioid withdrawal will miss half of what the body is going through. The result is a withdrawal that is often more agitated, more prolonged, and harder to settle with opioid medications alone.

Standard opioid detox protocols lean on medications such as buprenorphine or methadone to manage opioid withdrawal. Those medications do nothing for the xylazine component, which can drive severe anxiety, restlessness, sweating and cardiovascular symptoms. Early research summarised by NIDA suggests withdrawal and substance use disorder symptoms may be more intense when xylazine is combined with fentanyl than with fentanyl alone. There is no single approved protocol for xylazine withdrawal, so care has to be built around close medical observation and symptom-led management rather than a fixed script. This is exactly the situation where an unsupervised or at-home detox tends to fail.

What does medically supervised treatment for xylazine exposure involve?

It begins with medical assessment and stabilisation under supervision, treating the opioid and the xylazine components as two related problems, and it continues with wound care and structured behavioural health treatment. The aim of the first phase is safety and comfort, not speed.

In practice, at a residential facility this means a clinician reviews what the person has actually been exposed to, monitors vital signs through the acute phase, and manages symptoms as they emerge rather than assuming a textbook opioid timeline. Wounds are assessed and dressed. Sleep, hydration and nutrition are supported, because xylazine withdrawal is physically punishing. Only once someone is medically stable does the deeper work of treatment begin. Because dependence rarely travels alone, that work is where co-occurring conditions are addressed alongside the substance use through our Dual Treatment programme, delivered within Holina’s 30, 60 and 90-day residential tiers.

How Holina approaches xylazine-exposed patients

We do not treat xylazine as an exotic case. We treat it as the current reality of opioid use, and we build the plan around what the person is genuinely dependent on rather than what they intended to buy. That starts with an honest assessment through our intake team and continues under the supervision of our clinical team on our beachfront campus in Koh Phangan.

“When xylazine is involved, the mistake is to run a standard opioid detox and expect a standard result,” says Dr. Natalie Lindemann, Clinical Director (Global) at Holina Global. “We plan for two overlapping withdrawals and for wound care from day one, because managing only the opioid side leaves the patient in avoidable distress and at real risk of leaving before they are stable.”

What families can do now

If you suspect xylazine, do not wait for certainty before acting, and do not attempt to manage withdrawal at home. The safest next step is a medical assessment that treats both the opioid and the xylazine components together.

Keep naloxone available and use it for any suspected overdose, understanding that it will reverse the opioid but not the sedation, so the person still needs monitoring and emergency care. Take any wound seriously and mention it at assessment. And look after yourself in the process; watching this from the outside is its own kind of exhausting, which is why we offer structured family addiction support alongside the clinical programme. The supply has changed, but the path into treatment has not: an honest assessment, medical supervision, and a plan built around what is actually in the person’s body.

How Holina Rehab Approaches Xylazine Exposure

Everything above is delivered in one place rather than across a chain of referrals. Detox at Holina Rehab is medically supervised on-site, so the acute phase is managed by our own clinicians rather than handed off, and both the opioid and the xylazine components are held under one plan from the first assessment onwards.

Our residential campus sits on the beachfront on Koh Phangan in Thailand. That setting matters clinically as well as therapeutically: a person in early stabilisation is removed from routine access to the contaminated supply that put them here, which takes one of the hardest variables out of the equation during the days when relapse risk is highest. Around that, the deeper work runs through our Dual Treatment programme, structured across 30, 60 and 90-day residential tiers so the length of care can match the severity of what someone is carrying rather than a fixed calendar.

Because xylazine exposure so often sits alongside trauma and other behavioural health conditions, treatment is not detox alone. Marc Rower, our Lead Trauma Therapist, and Hamutal Cohen, who manages our psychotherapy team, work alongside the medical staff so that once a person is stable the underlying drivers are addressed rather than left for later. The whole plan stays under the oversight of our Clinical Director, Dr. Natalie Lindemann.

Frequently Asked Questions

Is xylazine an opioid?

No. Xylazine is a veterinary sedative and muscle relaxant. It is not an opioid, which is why opioid-reversal medication does not counteract its effects.

What is “tranq”?

“Tranq” is the common street name for xylazine, and “tranq dope” usually refers to fentanyl that has been mixed with xylazine.

Does naloxone (Narcan) work on xylazine?

Naloxone does not reverse xylazine because xylazine is not an opioid. You should still give naloxone for any suspected overdose, because xylazine is almost always mixed with fentanyl, but the person may stay sedated and needs continued monitoring.

Why is xylazine in fentanyl?

It is added as a cheap adulterant that prolongs and deepens fentanyl’s sedating effect. Most people who take it did not choose it and do not know it is there.

What do xylazine wounds look like?

They are typically large, slow-healing skin ulcers that can appear away from injection sites and worsen with continued use. Severe untreated wounds can lead to deep tissue damage.

Can you detox from xylazine at home?

It is not advisable. Xylazine adds a second, non-opioid withdrawal on top of the opioid one, and the combined process can be severe and unpredictable, which is why medical supervision is recommended.

Is there a medication that reverses xylazine like naloxone reverses opioids?

There is no reversal agent licensed for xylazine in humans. Care is supportive, including monitoring, rescue breathing and positioning while the opioid component is reversed.

How long does xylazine withdrawal last?

There is no fixed timeline, and it can be more prolonged and agitated than opioid withdrawal alone. Care is guided by symptoms and close observation rather than a standard schedule.

Does standard opioid detox medication treat xylazine?

No. Medications such as buprenorphine or methadone address the opioid component only. The xylazine component is managed separately through supportive medical care.

How common is xylazine in the drug supply now?

It has become widespread. The DEA identified xylazine-fentanyl mixtures in 48 of 50 states, and detection more than doubled across many states between 2019 and 2022.

Do you have to already be xylazine-free to enter residential treatment at Holina?

No. Assessment and medically supervised stabilisation are part of the programme. You do not need to have detoxed before you arrive.

Clinically reviewed by Dr. Natalie Lindemann — Clinical Director, Holina Global · Last reviewed 20 July 2026.