Does Narcan Work on Hallucinogens?

Narcan can be found in pharmacies, schools, public buildings, and even vending machines. Its positive impact is undeniable as it’s saved countless lives. But this doesn’t mean it’s well understood.

Many quickly (and falsely) assume that Narcan works for any drug emergency. But if someone is in crisis after taking hallucinogens, will Narcan help? The short answer is no, and here’s why.

Key Takeaways

Narcan (naloxone) only works on opioids because it blocks opioid receptors in the brain.
Hallucinogens such as LSD, psilocybin, PCP, ketamine, DMT, and mescaline affect different brain systems, so Narcan does not reverse their effects.
Stimulants, benzodiazepines, and alcohol overdoses are also not reversed by Narcan.
If someone is unresponsive and you are unsure what they took, giving Narcan is still recommended because fentanyl contamination is common.
Always call 911 during a suspected overdose or severe drug reaction and stay with the person until medical help arrives.

What Is Narcan? And How Does It Work?

Narcan is the brand name for naloxone, a medication known as an opioid antagonist. When someone overdoses on opioids, such as fentanyl, heroin, or prescription painkillers, these drugs attach to opioid receptors in the brain and slow or stop breathing. Naloxone works by rushing in and knocking the opioids off those receptors, reversing the overdose within minutes and restoring normal breathing.

However, naloxone is built for one specific job, which is to block opioids from opioid receptors. It is very fast and safe when opioids are involved. But if a drug doesn’t act on the opioid receptors in the first place, Narcan has nothing to grab onto and nothing to reverse.

Does Narcan Work on Hallucinogens?

No, Narcan does not work on hallucinogens.

Hallucinogens act on different systems in the brain, mostly involving serotonin. Since there is no opioid for the medication to block, giving Narcan during a hallucinogen crisis simply has no effect.

This is not a reason to take a hallucinogen emergency lightly. A severe reaction can still be frightening and potentially dangerous. But it does mean that Narcan is not the right tool for it, and knowing that ahead of time may help you respond with what actually works, especially during a moment of crisis.

What Drugs Will Narcan Not Work On?

Narcan is lifesaving; this isn’t the debate. But it’s not going to work for every drug. So, here are the main instances where it won’t work.

Hallucinogens

Hallucinogens include substances such as LSD, psilocybin (mushrooms), PCP, ketamine, DMT, and mescaline. Because these drugs affect serotonin and other neurotransmitters instead of opioid receptors, naloxone does nothing to counter their effects.

A hallucinogen emergency tends to look different from an opioid overdose. Instead of slowed breathing, you may see intense psychological distress, panic, confusion, paranoia, or agitation. With substances such as PCP and ketamine, there can also be serious physical risks, including dangerous changes in heart rate, body temperature, and behavior that could lead to injury.

So, what can help in these situations if not Narcan? Often, a calm, quiet environment, gentle reassurance, close supervision to prevent self-harm, and emergency medical care when the reaction is severe are the best ways to help someone who is struggling on hallucinogens.

Stimulants

Stimulants such as cocaine, methamphetamine, and MDMA also fall outside what Narcan can treat. A stimulant overdose stresses the cardiovascular system and can lead to a racing heart, dangerously high body temperature, seizures, and cardiac arrest. And naloxone won’t reverse any of these effects.

Benzodiazepines and Alcohol

Narcan does not reverse a benzodiazepine overdose (from medications such as Xanax or Valium) or alcohol poisoning either. Both can suppress breathing and become life-threatening on their own, and both require emergency medical attention.

When You Should Still Use Narcan

Today’s drug supply is unpredictable, and many street drugs are contaminated with fentanyl, which is a powerful opioid. This includes counterfeit pills and even substances sold as something else entirely. In fact, someone may believe they took only a hallucinogen or a stimulant when fentanyl was present without their knowledge.

For this reason, if someone is unresponsive and you aren’t sure what they took, give Narcan anyway. If no opioids are in their system, the naloxone won’t cause any harm. If opioids are present, it could save their life.

And in every case, call 911 immediately. Narcan can buy precious time, but it’s never a replacement for emergency medical care. Stay with the person until help arrives.

Getting Help With Freedom Recovery Centers (FRC)

If you’ve found yourself searching for answers about overdoses and how to respond, there’s a good chance you’re worried about your own substance use or someone you love. Getting help for yourself or your loved one is one of the best things you can do.

At Freedom Recovery Centers (FRC), we provide compassionate, evidence-based care for individuals struggling with substance use. Our team in Richmond, Virginia, is here to help guide you when you’re not sure how to take that next step. Addiction can be a struggle, but together, we can help you overcome it. Call us anytime at 804-635-3746. Our phone lines are open 24/7; you don’t need to do this alone.

Frequently Asked Questions

Does Narcan work for psychedelics?

No. Psychedelics such as LSD and psilocybin affect serotonin systems instead of opioid receptors, so naloxone does not reverse their effects.

Can Narcan hurt someone if they did not take opioids?

No. Narcan only targets opioid receptors, so it generally will not harm someone who does not have opioids in their system.

What should you do if someone is having a bad reaction to hallucinogens?

Keep them calm in a quiet and safe environment, reassure them gently, and seek emergency medical care if symptoms become severe or dangerous.

Should you still give Narcan if you are unsure what drug was taken?

Yes. Because fentanyl contamination is common, administering Narcan to an unresponsive person may save their life while waiting for emergency services.