Fentanyl Withdrawal Process: Symptoms, Duration & Phases

Medically Reviewed

Up to Date

This article was reviewed by a medical professional to guarantee the delivery of accurate and up-to- date information. View our research policy.

Editorial Policy

Last Updated - 07/05/2024

View our editorial policy
If you or a loved one is struggling with addiction, help is available. Speak with a Recovery Advocate by calling (317) 754-7784 now.

Key Takeaways

  • Fentanyl is a potent synthetic opioid with a high risk of addiction and severe withdrawal symptoms.
  • Withdrawal symptoms can be both physical and psychological, including intense cravings, anxiety and gastrointestinal distress.
  • The severity and duration of withdrawal symptoms vary based on dosage, length of use and individual physiological factors like BMI.
  • Withdrawal typically occurs in three phases: early, peak and late, with symptoms ranging from muscle aches to psychological distress.
  • Medication-Assisted Treatment (MAT) using drugs like methadone and buprenorphine is crucial for managing withdrawal symptoms.
  • Therapy and counseling play a vital role in recovery, addressing the psychological aspects of addiction and reducing relapse risk.
  • Medical supervision is essential during withdrawal to ensure safety and provide support for long-term recovery.

What is Fentanyl? 


Fentanyl is a powerful synthetic opioid analgesic, similar to morphine but significantly more potent. It is typically used to treat patients with severe pain or to manage pain after surgery. Medically, fentanyl can be prescribed through transdermal patches, which provide continuous pain relief by adhering to the skin. However, fentanyl’s high potency also makes it a common substance for abuse and illegal production.

How Fentanyl Affects the Body

Fentanyl exerts its effects by binding to the body’s opioid receptors, which are found in areas of the brain that control pain and emotions. When opioid drugs bind to these receptors, they can increase dopamine levels in the brain’s reward areas, producing a state of euphoria and relaxation. This mechanism is also what contributes to the high risk of addiction associated with opioid drugs like fentanyl.

Despite its medical benefits, fentanyl use can lead to adverse side effects such as sedation, confusion, drowsiness, dizziness, nausea, vomiting, urinary retention, pupillary constriction and respiratory depression. In cases of overdose, which are more common with potent opioids like fentanyl, the respiratory depression can become life-threatening.

Realities of Fentanyl Withdrawal: Symptoms and Effects


Fentanyl withdrawal is a significant concern due to the drug’s high potential for abuse and the physical dependence it can create. Withdrawal from fentanyl can lead to a range of symptoms that are both physical and psychological in nature. These symptoms are a result of the body’s adaptation to the presence of the drug and its response to the absence of it once use is discontinued.

The severity and duration of these symptoms can vary based on several factors, including the dosage taken, the length of use and individual physiological differences. It is crucial to understand that untreated fentanyl withdrawal often leads to a high risk of relapse due to the discomfort and cravings associated with the process. 

For this reason, medical supervision is strongly recommended during detoxification. Tapering off fentanyl gradually under medical guidance can help manage the withdrawal symptoms more effectively and reduce the risk of severe complications.

Physical and Psychological Symptoms


Fentanyl withdrawal can present a range of physical and psychological symptoms, which can be intense due to the drug’s potency. These symptoms begin within hours of the last dose and typically peak within 2 to 3 days.

Physical symptoms commonly include:

  • Dehydration
  • Muscle aches and sweating 
  • Gastrointestinal distress
  • High blood sodium levels 
  • Rapid heart rate heart failure
  • Trouble walking and balancing

Psychological symptoms are marked by:

  • Intense cravings
  • Restlessness
  • Agitation
  • Anxiety

Factors Influencing the Length of Fentanyl Withdrawal

The duration of fentanyl withdrawal can be influenced by a variety of factors, such as dosage, length of use and method of administration. Personal health and lifestyle choices, including overall physical health, presence of co-occurring disorders and individual metabolic rates, can also impact the duration and severity of withdrawal symptoms.

It is important to note that the presence of fentanyl in combination with other substances, such as heroin or methamphetamine, can complicate the withdrawal process, potentially altering the duration and intensity of symptoms.

Dosage and Usage Duration

The duration and intensity of fentanyl withdrawal can be significantly influenced by the dosage and length of use. Fentanyl, as a potent opioid, has a high affinity for mu-opioid receptors in the brain, leading to rapid tolerance and potential dependence. 

Studies indicate that individuals with a history of using higher doses of fentanyl may experience more severe withdrawal symptoms and may require higher replacement doses of medications like buprenorphine during treatment.

Moreover, the duration of fentanyl use plays a crucial role in the withdrawal process. Prolonged use can lead to more severe withdrawal symptoms due to the downregulation of opioid receptors and increased tolerance. 

Health and Lifestyle


When addressing fentanyl withdrawal, it’s critical to consider personal health profiles and lifestyle factors that uniquely influence the withdrawal process. For instance, a person’s Body Mass Index (BMI) may affect the severity of withdrawal symptoms and the rate at which fentanyl is cleared from the body due to its lipophilic nature, as noted in a study from NCBI.


Moreover, underlying health conditions such as depression, which is prevalent among those with musculoskeletal disorders using fentanyl, can exacerbate withdrawal symptoms. The co-use of substances like benzodiazepines, commonly found alongside opioid use, may also influence the withdrawal experience. 

Comorbidities, including hypertension, diabetes and obesity, have been associated with more complex withdrawal scenarios. Lifestyle choices, including the duration and frequency of fentanyl use, play a substantial role in the withdrawal timeline. Regular and high-dose use can lead to more severe and extended withdrawal periods.

Understanding the Fentanyl Withdrawal Timeline

Fentanyl withdrawal is a multi-phase process that can vary in duration and intensity based on several individual factors. Understanding the stages of withdrawal is crucial for those undergoing treatment and for healthcare providers managing the detoxification process.

  1. Early Phase: This initial stage begins within hours after the last dose and can last for a couple of days.
  2. Peak Phase: Typically occurring a few days after cessation, this stage is characterized by the most intense symptoms.
  3. Late Phase: Following the peak, symptoms gradually lessen but may persist for weeks or even months.

Early Withdrawal Phase


The early is marked by the onset of various withdrawal symptoms as the body begins to adjust to the absence of the drug. Symptoms during this stage can range from mild to severe and may include anxiety, muscle aches, increased tearing, insomnia, runny nose, sweating and frequent yawning.

For those seeking help, The Recovery Village offers comprehensive treatment programs that address both the physical and psychological aspects of fentanyl withdrawal, ensuring a safer and more comfortable detox process.

Peak Withdrawal Phase


The peak withdrawal phase of fentanyl cessation is a critical period marked by the most intense physical and psychological symptoms. During this timeframe, individuals may experience severe physical and psychological distress. In a medical setting, healthcare professionals can provide support and may administer medications to help mitigate the symptoms and prevent potential complications.

Given the heightened risks during the peak withdrawal phase, it’s crucial for individuals to have access to comprehensive medical care. Treatments may include MAT to alleviate symptoms and reduce cravings, as well as psychological support to navigate the emotional challenges of withdrawal.

Late Withdrawal Phase


During the late withdrawal phase, individuals may experience a range of symptoms that are less intense than the acute withdrawal phase but can still significantly impact daily functioning and quality of life. Unlike the early and peak withdrawal phases, which are characterized by more severe and physically distressing symptoms, the late withdrawal phase is often marked by psychological and emotional challenges.

It is essential for individuals undergoing this phase to receive continued support and care. Due to the prolonged nature of this phase, medical supervision and a strong support system are vital to help manage the lingering symptoms, reduce the risk of relapse and support long-term recovery.

Treatment Options for Managing Fentanyl Withdrawal


Fentanyl withdrawal can present significant challenges and managing its symptoms requires a multifaceted treatment approach. Withdrawal symptoms can range from uncomfortable to severe and in some cases, lead to life-threatening complications. Emergency medical interventions may be necessary, particularly in cases of iatrogenic withdrawal caused by reversal agents like naloxone.

MAT plays a critical role in alleviating withdrawal symptoms and supporting recovery. Medications such as methadone and buprenorphine reduce cravings and ease the physical discomfort associated with withdrawal. Alpha-2 adrenergic agonists like clonidine and lofexidine can also be used to manage symptoms such as anxiety and tachycardia.

Recent advancements suggest new drug options are on the horizon to further aid in withdrawal management, addressing symptoms like insomnia which can be a barrier to recovery. Additionally, Oregon’s legislative proposal to fund medication treatment programs in jails reflects a growing recognition of the need for accessible treatment options across different settings.

It is vital to have medical supervision during the withdrawal process to monitor health and mitigate risks. The complexity of fentanyl withdrawal necessitates a comprehensive treatment plan, often including therapeutic support and counseling, to address both the physical and psychological aspects of addiction recovery.

Medication-Assisted Treatment 


MAT is a comprehensive approach to address opioid use disorders, including fentanyl addiction. MAT combines FDA-approved medications with counseling and behavioral therapies to form a holistic treatment plan. This method is effective in easing withdrawal symptoms, preventing overdose and supporting long-term recovery from opioid dependence.

These medications function differently; for instance, buprenorphine and methadone can suppress withdrawal symptoms and reduce cravings, while naltrexone blocks the euphoric effects of opioids. Administered under medical supervision, MAT is designed to improve patient safety and outcomes.

It is crucial to understand that MAT does not cure opioid dependence but rather manages its symptoms and facilitates a more manageable withdrawal process. The integration of MAT in treatment plans is supported by the Substance Abuse and Mental Health Services Administration (SAMHSA), which emphasizes the importance of combining medication with psychological support.

Therapy and Counseling


Therapy and counseling are pivotal in managing withdrawal symptoms and preventing relapse for individuals recovering from fentanyl addiction. Cognitive Behavioral Therapy (CBT), a form of psychotherapy, is particularly effective in this regard. According to the National Institute on Drug Abuse, relapse rates for addiction are estimated to be between 40 to 60 percent, underscoring the challenge of maintaining sobriety.

CBT addresses this challenge by helping individuals recognize patterns of negative thinking and behavior that contribute to substance abuse and developing strategies to cope with cravings and avoid relapse. Furthermore, therapy provides a supportive environment for individuals to explore the underlying emotional and psychological factors contributing to their addiction.

Engaging in therapy and counseling also offers a sense of community and belonging, which combats the isolation often felt during recovery. Lastly, therapy and counseling can aid in developing healthy life skills that are often neglected due to addiction. These life skills contribute to a more fulfilling and stable life post-recovery, reducing the likelihood of relapse. 

Why Medical Supervision is Essential for Fentanyl Withdrawal

Medical supervision is paramount during fentanyl withdrawal due to the drug’s potent opioid effects and high risk of severe withdrawal symptoms. These symptoms can be life-threatening and require professional medical intervention. Medical supervision ensures safe detoxification, where medications may be administered to mitigate withdrawal symptoms. 

For instance, buprenorphine has been shown to decrease mortality and morbidity in opioid-dependent patients. However, due to the risk of precipitated withdrawal, its administration must be carefully managed by healthcare professionals. Furthermore, medical professionals can monitor the patient’s vital signs, provide psychological support and adjust treatment protocols as needed.

Get Fentanyl Addiction Recovery Treatment

For those seeking fentanyl addiction treatment, The Recovery Village Indianapolis Drug and Alcohol Rehab stands as a beacon of hope. Located within the heart of Indy, we offer a comprehensive array of treatment options, including medical detox, inpatient care, partial hospitalization and intensive outpatient services. 

When you or a loved one are ready to embark on the path to recovery, our Recovery Advocates are here, ready to assist. Reach out to learn more about our tailored treatment programs, designed to cater to your specific needs and situation.

Authorship

Get your life back

Recovery is possible. Begin your journey today

Call Us Now Admissions Check Insurance

What To Expect

When you call our team, you will speak to a Recovery Advocate who will answer any questions and perform a pre-assessment to determine your eligibility for treatment. If eligible, we will create a treatment plan tailored to your specific needs. If The Recovery Village is not the right fit for you or your loved one, we will help refer you to a facility that is. All calls are 100% free and confidential.

All calls are 100% free and confidential.