Opioid Withdrawal at Home: What Is Safe, What Is Not, and When to Go to the ER

Can you go through opioid withdrawal at home?

People do, and the withdrawal itself is rarely what kills them. MedlinePlus calls opioid withdrawal very uncomfortable but not life threatening, and names home withdrawal, with medicines and a strong support system, as one setting. It also calls that method difficult and says withdrawing on your own can be dangerous.

The danger sits on either side of the withdrawal. During it, vomiting and diarrhea can dehydrate a person, and with today’s fentanyl supply, a sedative called medetomidine can cause a withdrawal of its own that needs a hospital. After it, tolerance drops within days, so a return to a former dose can be an overdose. A plan for “at home” has to answer both.

Who should not try it at home

Pregnancy, street fentanyl, alcohol or benzodiazepine use, or heart disease means withdrawal should start with a clinician, not alone at home. Each changes the risk in a specific way:

• Pregnancy. Do not stop opioids on your own, and do not wait out withdrawal at home. Call the prenatal provider the same day, or go to a hospital if withdrawal has already started. ASAM recommends treatment with methadone or buprenorphine, started as early as possible, rather than withdrawal for pregnant people who are physically dependent on opioids. See detox while pregnant.
• Alcohol or benzodiazepines. Withdrawal from these can cause seizures. Our guides to alcohol at home and Ativan withdrawal explain why.
• Heart disease. Lofexidine and clonidine lower blood pressure and pulse, high-dose loperamide can disturb heart rhythm, and medetomidine withdrawal can bring a fast heart rate and severe high blood pressure.
• Fentanyl bought on the street. New Jersey’s Commission of Investigation reports that illicit fentanyl is now frequently mixed with xylazine or medetomidine, which the buyer cannot see, and the CDC warns medetomidine withdrawal can need emergency or intensive care. Start with a clinician, not alone. Our fentanyl withdrawal guide explains why.

How long opioid withdrawal lasts

Symptoms usually start within 12 hours of the last heroin use and within 30 hours of the last methadone dose, per MedlinePlus. SAMHSA’s TIP 63 puts acute withdrawal at about 7 to 10 days for short-acting opioids and 14 days or more for long-acting ones such as methadone. Early symptoms are anxiety, agitation, muscle aches, watery eyes, runny nose, sweating, yawning and insomnia; later ones are cramps, diarrhea, goosebumps, dilated pupils, nausea and vomiting. Fentanyl can stretch and blur that pattern; our heroin withdrawal timeline explains how.

Comfort medicines for opioid withdrawal, in plain terms

These ease symptoms. None of them treats the opioid use disorder underneath, and none should come from someone else’s cabinet.

ASAM’s guideline says lofexidine and clonidine are safe and effective for opioid withdrawal, and then adds the part that matters most: methadone and buprenorphine are more effective at reducing symptoms, keeping people in withdrawal management, and getting them through it. The lofexidine label was tested in inpatient settings where vital signs were checked before each dose, and it tells patients to stay hydrated and to know the signs of low blood pressure.

Why starting buprenorphine beats waiting it out

Waiting out opioid withdrawal ends with lower tolerance and the same disease; starting buprenorphine ends the withdrawal and treats the disease. ASAM recommends methadone or buprenorphine for withdrawal over abrupt cessation, because a sudden stop can bring strong cravings and acute withdrawal that put the person at risk for relapse, overdose and overdose death. It says withdrawal management on its own, without ongoing treatment, is not a treatment for opioid use disorder and is not recommended.

The case for it rests on mortality. Pooled cohort studies in the BMJ (Sordo, 2017) and JAMA Psychiatry (Santo, 2021) found all-cause death rates about half as high or lower during time on methadone or buprenorphine than during time off them. The Sordo review also found sharply higher death rates in the weeks right after people leave opioid agonist treatment.

Buprenorphine is also easier to get than it used to be. Since the federal waiver was eliminated, SAMHSA says any practitioner whose DEA registration includes Schedule III authority can prescribe it for opioid use disorder where state law allows, with no patient caps. ASAM considers both office and home starts safe and effective, chosen by clinical judgment.

The one thing not to do: start it alone

Buprenorphine taken while enough fentanyl or another full opioid is still on the receptors can cause precipitated withdrawal, sudden and severe. ASAM says a standard start should wait for objective signs of withdrawal, and its 2023 clinical considerations describe other approaches clinicians use for people on fentanyl. The timing is a clinician’s call. Our Suboxone, Subutex and Sublocade guide compares the forms.

When opioid withdrawal at home becomes an ER visit

Call 911, or go to an emergency department, for any of these:

• Any opioid withdrawal during pregnancy. Go to a hospital rather than waiting it out; ASAM recommends starting methadone or buprenorphine as early as possible.
• Vomiting or diarrhea that will not stop, or signs of dehydration. MedlinePlus lists dehydration, mineral imbalances, and inhaling vomit into the lungs as complications.
• Chest pain, a racing heart that will not settle, severe high blood pressure, confusion, or drifting in and out of alertness. The CDC’s April 2026 health advisory lists chest pain, a fast heart rate, severe high blood pressure and going in and out of awareness among the signs of medetomidine withdrawal, which can need emergency or intensive care.
• Fainting or a very slow pulse on lofexidine, whose label warns of both, or fainting or an irregular heartbeat after loperamide, which the FDA says needs a 911 call.
• A seizure or hallucinations. Tell the team about any alcohol or benzodiazepine use.
• Thoughts of suicide, or a person who cannot be kept safe. MedlinePlus says anyone in opioid detox should be checked for depression.

Tell the emergency team about every substance involved, and ask whether they can start buprenorphine before you leave.

Why the days after withdrawal are the dangerous ones

Opioid withdrawal is rarely fatal by itself, but tolerance falls within days, so a return to a former dose can be fatal. The lofexidine label warns that people who complete opioid discontinuation are likely to have reduced tolerance and are at increased risk of fatal overdose if they use again, and MedlinePlus calls a return to use the biggest complication of withdrawal.

That is why a home withdrawal needs naloxone in the house before it starts. Leave it where someone can reach it, tell them where it is, and do not use alone. ASAM recommends naloxone kits for people being treated for opioid use disorder and their families. Our naloxone guide for families covers how to get it in New Jersey.

In New Jersey

Under New Jersey law P.L.2017, c.28, fully insured New Jersey plans and the State Health Benefits and School Employees’ plans cannot require prior authorization for the first 180 days per plan year of in-network treatment your own physician, psychologist or psychiatrist finds medically necessary, or, during those same 180 days, for outpatient prescription drugs that treat substance use disorder, such as buprenorphine and naltrexone, when that clinician finds them medically necessary. Self-funded employer plans, Medicare and Medicaid are not covered by that rule, so verify with the plan.

NJ FamilyCare covers buprenorphine, methadone, and naltrexone. For most NJ FamilyCare members, the state still pays opioid treatment programs directly, so ask the program, not the health plan, about methadone. Opioid treatment programs and residential care are scheduled to move into the NJ FamilyCare health plans in January 2027. The opioid detox guide lists New Jersey’s licensed opioid-capable programs, and our outpatient detox guide covers the supervised version of detoxing while living at home.

For help independent of us, the state’s IME Addictions Access Center at 1-844-276-2777 screens NJ FamilyCare and uninsured residents and refers them to treatment, and ReachNJ, the state treatment line, is at 1-844-732-2465. Periscope Behavioral Health, which publishes this site, is opening a medical detox in Hammonton, Atlantic County, expected Summer 2027. Until it opens, Periscope Behavioral Health at (888) 313-3583, our publisher’s admissions line, can talk through options in New Jersey and Florida, including facilities Periscope operates. What a plan covers depends on the plan and the facility’s network status.

Before you try it at home

Settle four things first. Has a clinician seen you, and would they start buprenorphine instead? Are alcohol, benzodiazepines or a pregnancy part of the picture? Who will stay with you, and do they know the ER signs above? And where is the naloxone, and what happens the week after the withdrawal ends?