If you’re struggling with fentanyl dependence, you’re not alone — and recovery is achievable. At FHE Health, we offer comprehensive fentanyl detox and opioid addiction treatment, including medication-assisted detox and both residential and outpatient therapies, at our Deerfield Beach, Florida campus.
Fentanyl is a synthetic opioid that, according to the CDC, is 50 to 100 times more potent than morphine. It was originally developed as a powerful analgesic for severe pain — used in cancer care and post-surgical recovery — but its potency and the ease of illicit manufacture have made it a leading driver of fatal overdoses in the U.S. According to health policy organization KFF, fentanyl is now a factor in most opioid overdose deaths in the country.
- Fentanyl is 50–100 times more potent than morphine, making even small amounts capable of causing fatal overdose.
- Withdrawal begins 8–24 hours after the last use and is severe enough that medical detox is the safer path than quitting alone.
- Medication-assisted treatment using buprenorphine, methadone, or naltrexone is the standard of care for fentanyl addiction.
- FHE Health offers the full continuum of fentanyl care — medical detox, residential treatment, PHP, IOP, and aftercare — at our dual-accredited Deerfield Beach campus.
- Co-occurring depression and anxiety are common with fentanyl use; FHE treats substance use and mental health together through our dual diagnosis program.
Understanding Fentanyl Addiction
Like other opioid painkillers, fentanyl works by increasing dopamine levels in the brain. This process provides significant pain relief but also creates intense feelings of euphoria and relaxation. These pleasurable feelings are the primary reason illicit users seek out the drug.
Fentanyl users quickly develop psychological dependence from the emotional high and the relief of stress and anxiety its use brings. The body also develops tolerance, so users need to increase the dose and frequency to achieve the same effect — which significantly raises the risk of overdose. Stopping fentanyl is difficult because the withdrawal symptoms are severe and begin within 8 to 24 hours of the last dose.
Medical Detox for Fentanyl: What to Expect at FHE Health
During medical detox, you’ll be constantly supervised to make sure you’re as safe and comfortable as possible. Your physician will prescribe medications such as methadone or buprenorphine that reduce cravings and withdrawal symptoms. If you’re addicted to prescription fentanyl, your dosage may be gradually tapered to ease withdrawal. You’ll also be given medications to address aches and pains, nausea, cravings, and insomnia.
Medical detox continues until all traces of the drug have left your system and your body is no longer physically dependent on it. The actual length depends on how much fentanyl you were using and the severity and duration of withdrawal symptoms. Medical detox typically takes 3 to 10 days.
Withdrawal Timeline and Symptoms
The fentanyl withdrawal timeline usually goes through three phases: initial, acute, and post-acute withdrawal.
Initial Withdrawal Phase
Initial withdrawal starts around 8 to 12 hours after you last took fentanyl. Common symptoms include:
- Anxiety
- Runny nose
- Aches and pains
- Agitation
- Sweating
Acute Withdrawal Phase
After 24 hours, you’ll start to experience more acute withdrawal symptoms. These usually last around 3 days but may persist for up to a week. They include:
- Intense drug cravings
- Abdominal cramps
- Severe pain
- Diarrhea
- Vomiting
- Insomnia
- Dilated pupils
- Increased heart rate
Post-Acute Withdrawal Phase
Once the physical symptoms reduce, psychological symptoms tend to take over and may last for an extended period. Longer-term withdrawal symptoms include:
- Anxiety
- Poor sleep
- Depression
- Mood swings
Medication-Assisted Treatment (MAT) for Fentanyl
Medication-assisted treatment is the use of approved medications to reduce withdrawal symptoms and cravings. The FDA has approved the following medications for the treatment of opioid use disorder:
- Buprenorphine
- Methadone
- Naltrexone
These medications are safe and effective at weaning users off opioids.
In 2018, Congress passed the SUPPORT Act (Substance Use-Disorder Prevention that Promotes Opioid Recovery and Treatment for Patients and Communities Act). This law expanded access to funding for medication-assisted treatment and included provisions to ensure Medicaid and Medicare members have coverage for MAT and substance use disorder treatment.
Residential and Outpatient Treatment Options at FHE
If you’re struggling with an opioid use disorder, you have a choice between residential and outpatient treatment options. Both start with a medically supervised detox at our dual-accredited treatment facility in Deerfield Beach, Florida.
Inpatient Fentanyl Treatment
This is a fully supervised residential addiction treatment program that lasts from 21 to 90 days. During this time, you live in a comfortable, safe environment, free from outside distractions. You’ll participate in evidence-based individual and group therapy. These therapies help you break the addiction cycle, develop coping skills, and learn how to set boundaries so you remain drug-free once treatment ends.
Outpatient Fentanyl Treatment
If you can’t take time off for an inpatient program, FHE’s outpatient program offers partial hospitalization (PHP) and an intensive outpatient program (IOP) to help you take back control of your life. You’ll attend structured therapy sessions tailored to your needs and stage of recovery.
Dual Diagnosis: Treating Co-Occurring Mental Health Conditions
Fentanyl misuse frequently occurs alongside a mental health condition. According to a 2024 CDC report on 2022 drug overdose deaths, more than 1 in 5 people who died of overdose had a documented non-substance-related mental health disorder, with depression and anxiety the most common:
Bipolar disorder, PTSD, and other mood disorders also appear regularly in patients with fentanyl use disorder. At FHE Health, our dual diagnosis program treats substance use and mental health conditions at the same time, structuring an individualized treatment plan around the conditions you’re actually dealing with — because addressing one without the other increases the risk of relapse.
Life After Fentanyl Treatment
To reduce the risk of relapse after fentanyl treatment, FHE Health recommends staying engaged with our continuum of care. This is a structured approach that gradually transitions from intensive therapy to independent living. Whether you attend inpatient or outpatient rehabilitation, continued therapy and participation in support groups like Narcotics Anonymous help sustain long-term sobriety.
Seeking Help for Fentanyl Addiction
Fentanyl is highly addictive, and even short-term use can lead to an opioid use disorder. If you’re concerned about your own or a loved one’s fentanyl use, contact us at FHE Health for a confidential conversation. Our lines are open 24/7, every day of the year, and our admissions process is simple, transparent, and easy to access.
