Opioid overdose can look different from what people expect — it’s rarely a sudden collapse. More often, someone’s breathing slows down gradually over minutes, sometimes while they still seem partly awake.
The signs
- Breathing that’s slow, shallow, irregular, or has stopped
- Choking, gurgling, or a snoring sound that’s unusual for the person
- Skin that’s pale, blue, or grey — especially lips and fingertips
- Pupils that look like pinpoints
- Limp body, unresponsive to a firm sternum rub or shouting their name
- Slow or absent heartbeat
What can look similar but isn’t an overdose
Someone who is very high but breathing normally and responsive to a loud voice or painful stimulus is not currently overdosing — but should still be monitored, since that can change.
Why breathing is the sign that matters most
Opioids suppress the part of the brain that controls the drive to breathe. Everything dangerous about an overdose follows from that — not enough oxygen reaches the brain and heart. This is also why combining opioids with anything else that slows breathing (alcohol, benzodiazepines, other sedatives) sharply increases risk, even at doses that would be survivable with opioids alone.
What to do if you see these signs
- Call 911 immediately.
- Give naloxone if you have it. [naloxone article]
- Start rescue breathing if you’re trained and they aren’t breathing.
- Put them in the recovery position (on their side) if you have to leave them even briefly, to reduce choking risk.
- Stay until emergency responders arrive.
Who is at highest risk
- Anyone using opioids after a period of reduced tolerance — after detox, incarceration, or hospitalization [link to overdose risk after detox article]
- Anyone using opioids from an unregulated supply, where fentanyl contamination is now common in most of the U.S.
- Anyone combining opioids with alcohol, benzodiazepines, or other sedatives
Medically reviewed by [pending]. Sources: CDC, SAMHSA, NIDA.