How Long Does Fentanyl Stay In Your System

What Is Fentanyl? Many experts describe what’s occurring to drive the drug overdose scourge as the contamination of abused drugs.  The availability of Fentanyl, its potent effects, and how cheap it is to cut heroin, meth, cocaine, and possibly other drugs are likely the big culprits.  We now know that fentanyl and the contamination it brings to […]

What Is Fentanyl?

Many experts describe what’s occurring to drive the drug overdose scourge as the contamination of abused drugs.  The availability of Fentanyl, its potent effects, and how cheap it is to cut heroin, meth, cocaine, and possibly other drugs are likely the big culprits.  We now know that fentanyl and the contamination it brings to other addictive drugs are made, sold, and shipped to Americans from China. What’s more dangerous is that China has seemingly allowed the proliferation of Fentanyl.  This is another reason experts do not see any possibility of radical change in opioid withdrawal and overdose deaths for the rest of the current year.  [1]

What Is Fentanyl Used For?

Fentanyl is a potent synthetic opioid similar to morphine but is 50 to 100 times more powerful.  It is a prescription drug that is also made and used illegally.  Like morphine, it is a medication typically used to treat patients with severe pain, particularly after surgery.  However, it is also sometimes used to treat patients with chronic pain who are physically tolerant to other opioids.  Tolerance happens when you need a higher and/or more frequent drug to get the desired effects.

Synthetic opioids, including fentanyl, are now the most prevalent drugs involved in drug overdose deaths in the United States.  In 2017, 59.8 percent of opioid-related deaths involved fentanyl compared to 14.3 percent in 2010.  [2]

Fentanyl is a synthetic opioid pain reliever that is similar to other drugs like heroin and morphine, although fentanyl is a lot more powerful and potent.

U.S. drug overdose deaths rose nearly 30% in 2020, driven by synthetic opioids. Fentanyl is 50 times more potent than heroin, and it is now often mixed into other widely used illicit drugs, usually when the user is careless.

What Does Fentanyl Do to the Body?

Like heroin, morphine, and other opioid drugs, fentanyl works by binding to the body’s opioid receptors, which are found in areas of the brain that control pain and emotions.  After taking opioids many times, the brain adapts to the drug, reducing its sensitivity, making it hard to feel pleasure from anything besides the drug.  When people become addicted, drug-seeking and drug use take over their lives.  [3]

Drugs that cause comparable effects include other opioids such as morphine, hydrocodone, oxycodone, hydromorphone, methadone, and heroin. Fentanyl, like other commonly used opioid analgesics (e.g., morphine), produces effects [4] such as:

  • Relaxation
  • Euphoria
  • Pain Relief
  • Sedation
  • Confusion
  • Drowsiness
  • Dizziness
  • Nausea
  • Vomiting
  • Urinary Retention
  • Pupillary Constriction
  • Respiratory Depression 

How Long Does Fentanyl Stay In Your System?

Fentanyl withdrawal usually begins within 12-30 hours of the last dose of an opioid, the National Library of Medicine (NLM) reports. Fentanyl, in patch form, is an extended-release medication with effects that may continue to increase for the first 12-24 hours of wearing it, lasting up to 72 hours total, according to the labeling information provided by the U.S. Food and Drug Administration (FDA) for Duragesic. With a half-life of around 17 hours after removal of the patch, Fentanyl withdrawal likely begins around a day or so after taking it off. [5]

Fentanyl, Tramadol, Oxycodone, and Buprenorphine – 4 drugs that will not be detected on standard opiate drug tests.

Urine Test

Fentanyl (Duragesic) is not easily detected in either urine or serum. Our current system does not allow accurate determination of the presence of this drug.

Blood Test

Blood tests are able to detect fentanyl use from 5 hours to 48 hours after last use.

Hair Follicle Test

Hair tests can detect fentanyl for up to 3 months after last use. Blood tests are able to detect fentanyl use from 5 hours to 48 hours after last use. Saliva tests are used to test for many drugs. In the case of fentanyl, however, saliva tests cannot consistently detect it or its metabolites.

Saliva Test

Saliva is not an effective way to detect recent fentanyl use.

Fentanyl Overdose

The illegally used fentanyl most often linked with recent overdoses is manufactured in labs.  This synthetic fentanyl is sold unlawfully as a powder, dropped onto blotter paper, put in eye droppers and nasal sprays, or made into pills that look like other prescription opioids.

When fentanyl is abused, it can be extremely dangerous and lead to overdoses. The potency of the drug can result in people becoming addicted to the drug easily. 

Fentanyl Addiction Symptoms

  • Skipping social meetings to use Fentanyl
  • Using Fentanyl to avoid opioid withdrawal effects and negative symptoms
  • Failing to quit when one wants to do so
  • Tolerance or needing to use more to achieve the same high
  • Be dependent

Some drug dealers combine fentanyl with other drugs, such as heroincocainemethamphetamine, and MDMA.  This is because it takes very little to produce a high with fentanyl, making it a cheaper option.  This is very risky when people taking drugs don’t realize they might contain fentanyl as a cheap but dangerous additive.  They might be taking more powerful opioids than their bodies are used to and can be more likely to overdose.  [6]

Fentanyl Overdose Symptoms

A person can overdose on fentanyl.  An overdose happens when a drug produces severe adverse effects and life-threatening symptoms.  When people overdose on fentanyl, their breathing can slow or stop.  This can reduce the amount of oxygen that reaches the brain.  A condition called hypoxia.  Hypoxia can lead to a coma and permanent brain damage, and even death.

Overdose May Result In:

  • Stupor
  • Changes in Pupillary Size
  • Cold and Clammy Skin
  • Cyanosis
  • Coma
  • Respiratory Failure leading to dea

A triad of symptoms such as pinpoint pupils, coma, and respiratory depression strongly suggests opioid poisoning.

Fentanyl Withdrawal

It is never recommended to stop taking a drug like fentanyl “cold turkey,”, especially without professional supervision and aid. Fentanyl withdrawal may be tempered with a slow removal of the drug over a period of time, called tapering, or through medical detox.

Fentanyl Withdrawal Symptoms

The potential side effects of fentanyl withdrawal that occurs when the drug leaves the bloodstream:

  • Yawning
  • Sweating
  • Restlessness
  • Tearing up
  • Runny nose
  • Chills
  • Backache
  • Stomach cramps
  • Pain in joints and/or muscles
  • Body hair standing on end, or bristling
  • Muscle weakness
  • Nausea and/or vomiting
  • Anorexia
  • Diarrhea
  • Elevated heart rate
  • Hypertension
  • Increased respiratory rate
  • Insomnia
  • Anxiety
  • Pupil dilation

Fentanyl withdrawal likely peaks in the first few days and levels off within a week or so.

How To Safely Detox From Fentanyl

As sudden discontinuation of fentanyl may induce opioid withdrawal, individuals may instead choose to slowly taper off the drug. Tapering is the slow removal of fentanyl over a set period of time, and it is also called weaning off the drug. This must be performed under the direction and watchful eye of a medical professional who can set up a tapering schedule that may be able to keep fentanyl withdrawal symptoms from manifesting by keeping some of the opioid drugs in the system. By slowly removing the drug and not stopping “cold turkey,” opioid withdrawal may be managed safely.

When the use of drugs and alcohol ends, the addiction withdrawals begin. They’ll begin to have cravings that endure even with the knowledge of the adverse effects. Medical detox is critical in ensuring the fentanyl withdrawal is manageable and reaches completion as well as that it does not become dangerous and life-threatening. Fentanyl addiction needs detoxification the most.

Opiate Detox Treatment

The length of detox depends on how long an addict has been using fentanyl. The average withdrawal symptom timeline lasts from 4-10 days for short-acting forms of fentanyl such as Actiq, and 10-20 days for long-acting forms, such as Duragesic.

Clearing drugs from the body and overcoming withdrawal symptoms is the goal of detox, which is the first step of treatment for fentanyl addiction. You need to detox to obtain recovery in a safe and medically supervised setting.  We Level Up TX treatment center medically assist clients in clearing their systems of addictive substances.

For anyone who suffers from fentanyl addiction, just the thought of having to stop using can cause severe mental distress.  But, with the help of a medical detox center, the medical detox process is managed.  In addition, a comprehensive team prescribing medications can alleviate your withdrawal pains while monitoring your health 24 hours.  Thus, assuring both your safety and comfort.

Moreover, after the detox, We Level Up TX’s residential care program will slowly and effectively introduce the individual into an atmosphere of therapeutic growth.  Marked by Master’s level therapists, clinicians, group counselors, psychiatrists, and a community of like-minded individuals with the same aim: to attain sobriety and live a great life.

Trazodone Addiction
If you or someone you care about is looking for a life away from fentanyl abuse, We Level Up Detox center in TX can provide the care and support needed to recover. 

Fentanyl Addiction Treatment Options

Like other opioid addictions, medication with behavioral therapies is efficient in treating people with fentanyl withdrawal addiction. [7]

  • Medications:  Buprenorphine and methadone work by binding to the same opioid receptors in the brain as fentanyl, decreasing cravings and withdrawal symptoms.  Another medication, Naltrexone, blocks opioid receptors and prevents fentanyl from having an effect.  People can review treatment options with their health provider.
  • Counseling:  Behavioral therapies for addiction to opioids like fentanyl can improve people’s attitudes and behaviors associated with drug use, develop healthy life skills, and help them stick with their medication.  Some examples include:
    • Cognitive Behavioral Therapy:  This helps adjust the client’s drug use expectations and behaviors and efficiently handle triggers and stress
    • Contingency Management:  This uses a voucher-based system giving clients “points” based on negative drug tests. They can use the points to earn items that promote healthy living
    • Motivational Interviewing:  This is a client-centered counseling style that addresses a person’s mixed feelings to change

These behavioral treatment approaches have proven useful, mainly when used along with medications. If you or a loved one is struggling with fentanyl withdrawal addiction, you may reach out to us.  We Level Up TX counselors are always ready to answer any of your possible questions such as how long does Fentanyl stays in your system?


[2,3,4] Fentanyl DrugFacts – National Institute On Drug Abuse
[5] Fentanyl Withdrawal: Symptoms, Timeline & Rehab Treatment –
[6] Fentanyl – United States Drug Enforcement Administration
[7] Fentanyl Addiction – We Level Up Rehab Center