Fentanyl Detox in Los Angeles

Medically reviewed by Dr. Eric Chegouri, MD, Medical Director · Last reviewed November 7, 2026

Fentanyl has reshaped the drug supply in Los Angeles. People across the San Fernando Valley, Glendale, Burbank, Pasadena and the rest of Southern California now find themselves dependent on a drug they may never have chosen, often through counterfeit pills or contaminated powders. Stopping is possible, but it is rarely something a person can do safely or successfully on their own.

This page explains what medical fentanyl detox involves at Reggie's Recovery, our licensed detox and residential campus in Sun Valley: how admission works, what to expect in the first few days, how comfort and medication are handled, how long it usually takes, and what comes next.

What is fentanyl detox?

Detox, or withdrawal management, is the first stage of treatment for fentanyl use disorder. Its job is to help your body get through withdrawal safely, stabilize your health and prepare you for the treatment that actually addresses addiction. On its own, detox is not a cure. As a bridge into ongoing care, it is one of the most important steps you can take.

Medical detox differs from simply stopping. A clinical team assesses you, watches your vital signs and symptoms around the clock, treats discomfort with medication, and makes decisions about when and whether to start medication for opioid use disorder. If you want to understand the withdrawal process itself in detail, our fentanyl withdrawal guide covers symptoms and timelines phase by phase.

Why does fentanyl detox need medical care?

Opioid withdrawal is rarely life-threatening on its own, which leads some people to assume a few rough days at home will do. With fentanyl, that reasoning breaks down in three places.

• Relapse during withdrawal. The peak days are so uncomfortable that most unsupported attempts end in a return to use.
• Overdose after a few days off. Tolerance falls quickly. Returning to a previous amount, or to a pill of unknown strength, can stop breathing.
• Hidden complications. Street fentanyl is often mixed with other drugs, and stopping alcohol or benzodiazepines can cause seizures. Dehydration from vomiting and diarrhea can also become serious.

Medical detox addresses all three: it eases symptoms so you can stay the course, it keeps you safe while tolerance is lowest, and it catches complications early. It also gives you a clear next step, which is what turns a few days off into recovery.

What does fentanyl detox look like at Reggie's?

Detox at Reggie's Recovery takes place at our hilltop campus at 9250 Del Arroyo Dr in Sun Valley, overlooking the San Fernando Valley and the San Gabriel Mountains. It is a residential setting rather than a hospital ward, but the care is medical: our inpatient medical detox program provides 24/7 nursing with an on-call physician, under the oversight of our medical team.

We also treat people whose fentanyl use overlaps with other substances, including heroin, prescription opioids, stimulants and benzodiazepines. Polysubstance use is common and does not disqualify you; it simply changes the medical plan.

How do I get admitted for fentanyl detox?

Admissions are open 24/7, and the process has three steps. Most people complete it in under two hours and are admitted the same day.

1. Call us at (818) 355-1200. A confidential conversation about what you are using, how often, your health and what you need. Self-referrals are welcome, and a family member can call on your behalf.
2. Verify insurance. We check your benefits for free, usually in 15 to 30 minutes. You can also start online through our insurance verification page.
3. Begin treatment. We can help coordinate transportation from anywhere in Los Angeles. Our admissions page lists what to bring and what to leave at home.

What happens in the first 72 hours of fentanyl detox?

The first three days are usually the hardest, and they are when medical support makes the biggest difference. Every person's course is different, but it often looks something like this:

1. ArrivalSettling in and assessment

   Nursing staff check your vitals and take a history, bloodwork is drawn, and a mental-health screening is completed. You are shown to your suite and given time to rest.

2. Hours 8–24Watching withdrawal begin

   As symptoms start, nurses score them regularly. If buprenorphine is part of your plan, your physician waits for the right point in withdrawal to begin, which helps avoid precipitated withdrawal.

3. Days 1–2Peak management

   This is when aches, cramps, nausea, sweating and sleeplessness tend to peak. Comfort medications, fluids and frequent check-ins keep things as manageable as possible.

4. Day 3Stabilizing

   For many people symptoms begin to ease. Appetite may start to return, and light counseling can begin once you are steady enough to engage.

Fentanyl can linger in the body with regular use, so some people have a slower start or a longer tail. Your team adjusts the plan to how you are actually doing, not to a fixed schedule.

How is comfort managed during fentanyl detox?

Nobody should have to white-knuckle withdrawal. Comfort care treats each symptom directly: medications for nausea and diarrhea, relief for muscle aches, support for anxiety and restlessness, and help with sleep. Your physician chooses specific medications based on your health and history; we never use a one-size-fits-all protocol, and we do not publish doses because they must be individualized.

Non-medication support matters too. Warm showers, rest, hydration, simple meals, quiet and someone checking on you all help. As the worst passes, gentle movement, fresh air on the terraces and short conversations with a counselor begin to rebuild routine.

Can I start Suboxone or naltrexone during fentanyl detox?

Often, yes. According to SAMHSA and NIDA, medications for opioid use disorder reduce the risk of overdose death and help people stay in treatment. At Reggie's, our medication-assisted treatment program offers two options:

• Buprenorphine (Suboxone) partially activates opioid receptors to ease withdrawal and cravings. It is commonly started during detox, once withdrawal has begun, with timing chosen carefully after fentanyl.
• Naltrexone, as a daily tablet or monthly extended-release injection, blocks opioid effects. It is started only after opioids have fully cleared, so it typically comes after detox is complete.

Methadone is a third FDA-approved option, but it is dispensed only through certified opioid treatment programs and is not offered at Reggie's. If you are already on methadone, tell us when you call so we can talk through your situation. Whether to use medication at all, and which one, is a decision you make with your physician.

How long does fentanyl detox take?

Inpatient detox at Reggie's typically lasts 5 to 10 days. Where you fall in that range depends on how much and how long you have used fentanyl, whether other substances are involved, your physical and mental health, and how your body responds to treatment. Some people with heavy, long-term use need the longer end.

Your care team decides when you are medically ready to move on. Feeling better on day four is a good sign, but it is not the same as being stable, and leaving early is one of the riskiest moments in recovery because tolerance is low.

Does insurance cover fentanyl detox?

Many health plans cover medically necessary detox for opioid use disorder, and federal parity law requires most plans that cover addiction treatment to do so on terms comparable to other medical care. Reggie's works with most major PPO plans. HMO options for our level of care are more limited, but we can guide you to resources. We generally don't accept Medi-Cal, but if that's your coverage we'll connect you with a provider who does.

Verification is free, confidential and usually takes 15 to 30 minutes. Your employer is not notified, and your records are protected under HIPAA and 42 CFR Part 2. To get a sense of your benefits first, try our Insurance Decoder or read our insurance coverage guide.

What happens after fentanyl detox?

Detox ends physical dependence on fentanyl. Recovery is what you build next, and the transition is where many people stumble. At Reggie's, there is no gap: you can move straight from detox into residential treatment on the same Sun Valley campus, typically for 30 to 90 days.

Our PHP and IOP programs are at 2107 W. Manchester Ave in Los Angeles, run by the same clinical team; see outpatient care. MAT can continue throughout. We serve clients from across the region; see areas we serve. For the bigger picture of fentanyl treatment, visit our fentanyl rehab page.