Quick Summary
An opioid overdose can kill within minutes. Recognizing the signs and acting fast can save a life. This guide walks through the signs to watch for, how to respond, how to use naloxone (Narcan), and what to do after, based on guidance from the CDC, SAMHSA, and the National Institute on Drug Abuse.
Key Takeaways
- Pinpoint pupils, slow or stopped breathing, and blue or gray lips are the most reliable signs of opioid overdose.
- Call 911 first or as soon as possible. Naloxone is not a substitute for emergency medical care.
- Naloxone (Narcan) reverses opioid overdose within 2 to 3 minutes and is now available over the counter.
- Administer one dose, wait 2 to 3 minutes, then give a second dose if breathing has not returned.
- Stimulant overdose looks different (overheating, seizures, chest pain) and naloxone will not help with it.
An opioid overdose is a medical emergency. The signs can develop quickly, and the difference between survival and tragedy often comes down to how fast someone nearby recognizes what is happening and responds. The information below comes from the CDC’s overdose prevention guidance, the SAMHSA Opioid Overdose Reversal Medications guide, and NIDA’s naloxone DrugFacts.
Signs of an Opioid Overdose
- Pinpoint pupils, very small and constricted even in normal lighting.
- Unresponsive to verbal or physical stimuli.
- Slow, shallow, or stopped breathing.
- Choking, gurgling, or snoring sounds, often called the “death rattle.”
- Blue or gray lips, fingernails, or skin, especially around the mouth.
- Limp body, with no muscle tension.
- Pale, clammy skin.
What to Do
- Try to wake the person. Shout their name, shake their shoulders, rub your knuckles firmly on their breastbone. If they do not respond, treat it as an overdose.
- Call 911. Tell the dispatcher what you observed. Stay with the person until help arrives.
- Administer naloxone if available. Follow the package instructions. Nasal spray goes into one nostril. The injectable goes into the outer thigh.
- Give rescue breaths if the person is not breathing and you are trained to do so. Tilt the head back, lift the chin, pinch the nose, and give one breath every five seconds.
- Wait 2 to 3 minutes. If breathing has not returned, give a second dose of naloxone.
- Put the person on their side (recovery position) if they start breathing on their own, so they do not choke if they vomit.
- Stay until paramedics arrive. Naloxone wears off in 30 to 90 minutes. The person can slip back into overdose, especially with long-acting opioids like methadone or fentanyl.
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About Naloxone
Naloxone (brand name Narcan) reverses an opioid overdose by knocking opioids off receptors in the brain and restoring normal breathing within 2 to 3 minutes. It has been used safely for decades. It only works on opioids. It cannot harm a person who is not overdosing on opioids.
Since 2023, naloxone nasal spray has been available over the counter at most pharmacies in the United States. Many states also distribute it free through public health programs. Carry it if you or someone you love uses opioids, including prescribed pain medication.
Good Samaritan Laws
Most states have Good Samaritan laws that protect people who call 911 to report an overdose from arrest for possession of small amounts of drugs. The exact protections vary by state. Fear of legal consequences should not prevent calling for help.
Stimulant Overdose Looks Different
Overdose from cocaine, methamphetamine, or other stimulants presents differently than opioid overdose. Signs include very high body temperature, chest pain, agitation, seizures, hallucinations, irregular heartbeat, and stroke. Naloxone will not help with a stimulant overdose, but it will not hurt either, and many overdoses today involve mixed substances. Always call 911, give naloxone if any opioid involvement is possible, and try to keep the person cool and safe.
After the Overdose
Survival is not the end. A non-fatal overdose is one of the strongest predictors of a future fatal overdose. Connecting the person to treatment, medication for opioid use disorder, and recovery support after an overdose substantially reduces that risk. The admissions team at Discovery Point Retreat can talk through what an assessment involves and what options exist.
References
- Centers for Disease Control and Prevention. Preventing overdose: naloxone. Accessed June 8, 2026. cdc.gov.
- Substance Abuse and Mental Health Services Administration. Opioid overdose and naloxone resources. Accessed June 8, 2026. samhsa.gov.
- National Institute on Drug Abuse. Naloxone drug facts. Accessed June 8, 2026. nida.nih.gov.
- Larochelle MR, Bernson D, Land T, et al. Medication for opioid use disorder after nonfatal opioid overdose and association with mortality. Ann Intern Med. 2018;169(3):137-145. NIH summary.
Resources
- 988 Suicide and Crisis Lifeline. Call or text 988, or chat at 988lifeline.org. Free, confidential support 24/7.
- SAMHSA National Helpline. Call 1-800-662-HELP (4357) or visit the SAMHSA National Helpline page for free, confidential referrals to local treatment.
- 911. For any medical emergency, including suspected overdose, call 911 immediately. If naloxone is available for a suspected opioid overdose, administer it according to the package instructions while waiting for help.
This article is general education and is not medical advice. It does not establish a clinician-patient relationship and is not a substitute for an individual assessment by a qualified mental health or addiction treatment professional.
