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Fentanyl Addiction

Compassionate, Evidence-Based Treatment Options in Florida for Fentanyl Addiction & Abuse

INTRO
KEY POINTS
  • Fentanyl is a highly addictive synthetic opioid. Its potency is estimated to be 50 to 100 times greater than that of morphine, meaning even extremely small quantities of fentanyl can lead to an overdose.
  • There is currently a trend toward illicitly produced fentanyl being added to street drugs, frequently without the end-user having knowledge they are receiving fentanyl. The likelihood of overdose is greatly increased due to the unpredictable nature of how much fentanyl is contained in a specific quantity of street drug.
  • Medical detox under clinical oversight is commonly used as the primary form of treatment for fentanyl addiction. Following that, structured levels of care are utilized to tailor the level of care for each individual.
  • With the proper combination of support, treatment planning, and aftercare, recovery from fentanyl addiction is achievable.

Fentanyl is a fully synthetic opioid, meaning it is manufactured entirely in a laboratory rather than derived from the opium poppy plant. It is still classified as an opioid and falls within the same category as morphine, oxycodone, and heroin due to its acting on the same receptors in the brain as morphine and other opioids, but it is far more potent.

Although fentanyl was developed for medical purposes and remains a Schedule II controlled substance in the U.S., it carries a high potential for physical dependence and substance use disorder.[2] In fact, it was only approved for use in medicine, and it is still heavily regulated today because it has a high potential for creating physical dependency as well as a high potential for developing a substance use disorder.

Outside of a medical setting, however, illegally produced fentanyl (also known as IMF) has been flooding the black market and is thought to be largely responsible for the alarming increase in overdose deaths across the U.S. 

Fentanyl was created in 1960 by Belgian chemist Paul Janssen during his quest for a more potent and faster-acting version of opioid painkillers. It received FDA approval for medical use in the U.S. during the 1960s and gained popularity in anesthesia and pain management fields throughout the subsequent decades.

During the 1990s, transdermal fentanyl patches were introduced, which allowed patients suffering from chronic or cancer-related pain to receive long-lasting, sustained-release pain management. While fentanyl can serve a valid medical purpose when used as directed by a doctor and closely monitored by a medical professional, illicit manufacturing has led to vast amounts of non-regulated fentanyl appearing in the black market. 

Starting sometime in 2013 and gaining momentum rapidly starting in 2016, illicitly manufactured fentanyl started showing up in heroin supplies, as well as counterfeit pills and many types of other street drugs. The CDC reported that synthetic opioids, primarily illicitly manufactured fentanyl, contributed to approximately 72,000 overdose deaths in 2022.[3]

Identifying substance abuse involving fentanyl early on can save lives. Clinically, fentanyl addiction is diagnosed as opioid use disorder (OUD). An opioid use disorder occurs when an individual’s brain physically relies on the substance in order to function normally and cannot stop seeking the substance despite negative consequences occurring as a direct result of continued use.[4]

Possible physical signs of fentanyl abuse include:

  • Extreme sleepiness (“nodding off”)
  • Reduced or slow breathing
  • Small, pinpoint-sized pupils
  • Disorientation or confusion
  • Nausea or vomiting
  • Slurred speech
  • Cold, sweaty, clammy, pale, or blue skin coloration (which is indicative of an overdose requiring immediate medical attention)

Possible behavioral indicators can include becoming withdrawn from friends, family members, and social activities; avoiding responsibilities; spending increasing amounts of time finding or making money to obtain the substance; and continuing to use despite knowing about potential risks and harm.

If your loved one is showing any of these signs, reaching out to a rehab center that offers fentanyl addiction treatment services could be one of the most important calls you ever make.

Other Names Used to Describe Fentanyl

Because fentanyl is frequently mixed into other illicit drugs or sold on its own, it circulates under a number of street names. Understanding some of these names may help loved ones identify if fentanyl may be involved in their loved one’s substance use. Some street names for fentanyl include:

Additionally, fentanyl is being pressed into counterfeit pills that mimic legitimate prescription medications such as OxyContin (M30s), Xanax, and Adderall. This further complicates the issue of identifying fentanyl exposure and increases the danger posed to users.

Why Is Fentanyl So Deadly?

Fentanyl’s incredible potency is what makes it so deadly. Fentanyl is estimated to be 50 to 100 times more potent than morphine and approximately 50 times more potent than heroin per unit weight.[5] Because of this potency, an amount of fentanyl as little as two milligrams (about three to four grains of salt) can be lethal to many individuals, especially those without previous experience with opioids.

Similar to all opioids, fentanyl binds to mu-opioid receptors in the brain and central nervous system, which causes users to feel an intense feeling of pain relief and euphoria while simultaneously suppressing essential bodily functions including respiration. When users ingest too much fentanyl, their respiratory system slows down until it eventually ceases functioning completely — a process known as respiratory depression. Without immediate intervention, this can result in permanent brain damage or death within minutes, which is why recognizing the signs of overdose and having naloxone on hand can be lifesaving.

A number of factors contribute to why fentanyl poses such a large threat in today’s drug supply:

Unpredictable distribution

 When fentanyl is cut into other substances, it doesn’t always distribute evenly. This creates areas (or “hot spots”) within a batch where one area could contain lethal concentrations of fentanyl while others don’t.

Undetectable

Fentanyl has no smell or taste, which means unless a user checks with a fentanyl test strip, they won’t know they’re getting fentanyl.

Contaminating other substances

There have been reports of fentanyl being found in stimulant-type drugs such as cocaine and methamphetamine, putting at risk individuals that don’t intend to consume opioids nor have any prior history of opioid use.

Together, these factors mean that using any unknown substance carries an unpredictable and potentially fatal risk, a reality that underscores how urgent access to treatment truly is.

How Much Fentanyl Can Be Lethal?

Research indicates that approximately two milligrams of fentanyl can be lethal to most adults who haven’t developed tolerance for opioids.[6] For comparison, pharmaceutical fentanyl patches are dosed in micrograms, a unit far smaller than a milligram, illustrating just how little illicit fentanyl it takes to cause a fatal overdose.

Since illicitly manufactured fentanyl isn’t made with any consistent standards of measurement, this inconsistency directly contributes to why there is such an increased risk of overdose whenever users consume street drugs containing fentanyl.

If administered promptly enough, naloxone (brand name Narcan) can effectively reverse a fentanyl overdose. However, since fentanyl is significantly more potent than other opioids, multiple doses may need to be administered.

Withdrawal Symptoms From Fentanyl

Since fentanyl is able to act so strongly on the body’s opioid receptors, over time the body adapts by altering its internal chemical composition in response to fentanyl use. Once use stops, the body struggles to rebalance itself, producing a range of withdrawal symptoms that are both physically and emotionally challenging.

Typically, withdrawal symptoms associated with fentanyl start occurring within hours after cessation of use and can include:

While fentanyl withdrawal symptoms are generally not fatal, the discomfort caused by them combined with extreme cravings experienced during withdrawal make self-detoxification an unpleasant and high-risk choice. Medical detox under the supervision of trained clinical staff is the safest and most effective way to begin the recovery journey from fentanyl addiction.

Comprehensive Care for Fentanyl Addiction in Florida

Fentanyl addiction can develop quickly, but recovery is possible with the right support. At Agape Behavioral Health, we provide individualized treatment plans that help clients safely begin recovery, address co-occurring mental health conditions, and build the skills needed for lasting change. Whether you’re seeking help for yourself or someone you love, our compassionate team is here to answer your questions, explain your treatment options, and help you take the next step with confidence.

FAQ

How long does fentanyl rehab take?

What makes fentanyl addiction treatment different from other opioids?

Can someone recover from fentanyl addiction?

Sources

[1] FDLE – Florida’s Opioid and Drug-Related Deaths decline during first half of 2025. (n.d.). https://www.fdle.state.fl.us/news/2026/may/florida-s-opioid-and-drug-related-deaths-decline-during-first-half-of-2025 

[2] Drugs.com. (n.d.). List of Schedule II drugs. Retrieved June 17, 2026, from https://www.drugs.com/schedule-2-drugs.html

[3] Tanz, L. J., Stewart, A., Gladden, R. M., Ko, J. Y., Owens, L., & O’Donnell, J. (2024). Detection of illegally manufactured fentanyls and carfentanil in drug overdose deaths — United States, 2021–2024. Morbidity and Mortality Weekly Report, 73(48), 1099–1105. Centers for Disease Control and Prevention. https://www.cdc.gov/mmwr/volumes/73/wr/mm7348a2.htm

[4] Cleveland Clinic. (2025, July 22). Opioid use disorder (OUD): What it is, symptoms & treatment. Cleveland Clinic. https://my.clevelandclinic.org/health/diseases/24257-opioid-use-disorder-oud

[5] World Health Organization: WHO. (2025, August 29). Opioid overdose. https://www.who.int/news-room/fact-sheets/detail/opioid-overdose 

[6] Drug Enforcement Administration. (2025). Facts about fentanyl. U.S. Department of Justice. https://www.dea.gov/resources/facts-about-fentanyl

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