How to Recognize an Opioid Overdose: Signs to Watch For

Every year, thousands of lives are saved because someone recognized the signs of an opioid overdose and acted quickly. Every year, thousands more are lost because those signs went unnoticed or misunderstood.

Knowing what an opioid overdose looks like — and what to do when you see it — is one of the most important pieces of knowledge you can carry. Whether you're in recovery yourself, supporting a loved one, or simply want to be prepared, understanding these signs can make the difference between life and death.

This isn't about judgment or fear. It's about being ready to help when seconds count.

What Happens During an Opioid Overdose?

An opioid overdose occurs when someone takes more opioids than their body can safely process. Opioids — including heroin, fentanyl, prescription painkillers, and medications like buprenorphine — work by binding to receptors in the brain that control breathing and pain.

When too many of these receptors get activated at once, the brain's signal to breathe slows down or stops entirely. This is what makes opioid overdoses so dangerous: the person can suffocate even while their heart is still beating.

Fentanyl has made overdoses even more unpredictable. Because it's extremely potent and often mixed into other drugs without the user knowing, overdoses can happen faster and with smaller amounts than people expect. If you're concerned about fentanyl exposure, fentanyl test strips are an important harm reduction tool.

The good news? Naloxone (Narcan) can reverse an opioid overdose if given in time. But you have to recognize the overdose is happening first.

The Critical Signs of Opioid Overdose

Breathing Problems (The Most Important Sign)

The clearest sign of an opioid overdose is trouble breathing. Look for:

• Very slow breathing — fewer than 8 breaths per minute, or long pauses between breaths
• Shallow breathing — barely visible chest movement
• Stopped breathing — no chest rise or fall
• Gurgling or choking sounds — sometimes called the "death rattle," this means the airway is partially blocked

If you're not sure whether someone is breathing, put your ear close to their mouth and nose. Look for chest movement, listen for breath sounds, and feel for air on your cheek.

Skin and Lip Color Changes

When oxygen levels drop, you'll see visible changes in skin tone:

• Blue or grayish lips and fingernails — this is called cyanosis and means oxygen isn't reaching the blood
• Pale or ashen skin — especially noticeable in lighter skin tones
• Purple or bluish tint to the face — particularly around the mouth and nose

In people with darker skin, check the palms, inside the lips, and under the fingernails for color changes.

Unresponsiveness

Someone experiencing an opioid overdose will become increasingly unresponsive:

• Can't be woken up by shaking, shouting, or rubbing your knuckles firmly on their sternum (breastbone)
• Limp body — no muscle tension when you lift an arm or leg
• No response to pain — rubbing knuckles on the sternum should wake almost anyone who's just sleeping

Pinpoint Pupils

Extremely small pupils — sometimes called "pinned" pupils — are a classic sign of opioid intoxication and overdose. The pupils look like tiny dots and don't respond normally to light.

However, don't rely on this sign alone. If the person has also taken stimulants like cocaine or methamphetamine, their pupils might be dilated instead.

Other Physical Signs

• Vomiting or choking on vomit
• Seizures — though less common
• Muscle stiffness or rigid posture
• Cold, clammy skin
• Weak or absent pulse

How to Tell If Someone Is Overdosing vs. Just High or Asleep

This is one of the hardest distinctions to make, and when in doubt, you should always treat it as an overdose and call 911.

Here's what to look for:

Someone who's asleep or intoxicated:

• Responds to loud voice or firm shaking (even if annoyed)
• Has normal breathing rate and depth
• Normal or flushed skin color
• Can be repositioned and shows muscle tension

Someone who's overdosing:

• Cannot be woken up by any stimulus
• Breathing is dangerously slow, shallow, or stopped
• Blue/gray lips or fingernails
• Body is completely limp

The "sternum rub test" is helpful here: make a fist and rub your knuckles firmly up and down the center of the person's chest. This is uncomfortable enough that it will wake almost anyone who's just sleeping. If there's no response, assume overdose.

Understanding the signs of opioid use disorder can also help you recognize when someone might be at higher risk.

Step-by-Step: What to Do If You Suspect an Overdose

Time is critical. Here's exactly what to do:

Step 1: Check for Response

• Shout the person's name
• Shake their shoulders firmly
• Perform a sternum rub with your knuckles
• If no response, assume overdose and move to step 2

Step 2: Call 911 Immediately

Don't wait to see if naloxone works. Call 911 first. Tell them:

• "I think someone is having an opioid overdose"
• The address or exact location
• Whether the person is breathing

In Virginia, Ohio, and Pennsylvania, Good Samaritan laws protect people who call 911 during an overdose from most drug possession charges. Learn more about Good Samaritan laws in your state.

Step 3: Give Naloxone (Narcan)

If you have naloxone nasal spray:

• Lay the person on their back
• Tilt their head back slightly
• Insert the nozzle into one nostril
• Press the plunger firmly to release the spray
• If no response in 2-3 minutes, give a second dose in the other nostril

Naloxone is available without prescription in most pharmacies and through harm reduction programs. Our detailed guide on understanding naloxone covers everything you need to know.

Step 4: Perform Rescue Breathing (If Trained)

If the person isn't breathing and you know CPR:

• Tilt their head back to open the airway
• Give one rescue breath every 5 seconds
• Continue until they start breathing or help arrives

If you're not trained in CPR, 911 dispatchers can guide you through it.

Step 5: Put Them in the Recovery Position

Once the person starts breathing again:

• Roll them onto their side
• Bend their top leg at the knee for stability
• Tilt their head back slightly to keep the airway open

This position prevents them from choking if they vomit.

Step 6: Stay Until Help Arrives

Don't leave them alone. Naloxone wears off in 30-90 minutes, and the opioids may still be in their system. They could slip back into overdose.

When paramedics arrive, tell them:

• What drugs you think they took (if known)
• When you found them
• How many doses of naloxone you gave
• Whether they were breathing

Common Mistakes to Avoid

Don't put them in a cold shower or bath. This doesn't reverse overdose and could cause drowning.

Don't try to make them walk around. This wastes critical time and doesn't help.

Don't inject them with salt water, milk, or anything else. Only naloxone reverses opioid overdose.

Don't give them stimulants like coffee or cocaine to "wake them up." This makes things worse.

Don't wait to see if they'll "sleep it off." Opioid overdoses don't resolve on their own.

If you're supporting someone in recovery and want to understand the broader context of harm reduction approaches, read our guide on harm reduction philosophy.

After an Overdose: What Comes Next

Surviving an overdose is traumatic, but it can also be a turning point. Many people are ready to consider treatment in the days following an overdose.

If you or someone you care about has experienced an overdose, this might be the right time to explore treatment options. Grata Health offers same-day telehealth appointments for Suboxone treatment in Virginia, Ohio, and Pennsylvania. We accept most insurance plans, including Medicaid, Aetna, Blue Cross Blue Shield, and Cigna.

Treatment with medications like Suboxone (buprenorphine) significantly reduces overdose risk by stabilizing brain chemistry and reducing cravings. Learn more about how online Suboxone treatment works or what to expect at your first telehealth appointment.

For people using fentanyl, starting treatment requires special considerations. Our guide on starting Suboxone from fentanyl explains the process.

Building a Safety Plan

If you or someone you love uses opioids, having a safety plan can save a life:

1. Keep naloxone on hand. Store it somewhere accessible and make sure others know where it is.
2. Don't use alone. Use with someone present, or use virtual overdose prevention services where available.
3. Start with a smaller dose if you've been out of regular use or if your supply is from a new source.
4. Avoid mixing substances. Combining opioids with alcohol, benzodiazepines, or other depressants dramatically increases overdose risk.
5. Test your drugs. Fentanyl test strips can detect contamination.

If you're in recovery, understanding common triggers in early recovery and building a daily recovery routine can help prevent relapse that might lead to overdose.

You Don't Need Permission to Save a Life

You don't need to be a medical professional to respond to an overdose. You don't need permission to call 911 or give naloxone. Good Samaritan laws in most states — including Virginia, Ohio, and Pennsylvania — protect you when you're trying to help.

The worst thing you can do is nothing. Even if you're not 100% sure it's an overdose, calling 911 and giving naloxone are safe steps that could save a life.

Carry naloxone. Know the signs. Be ready to act. These simple steps turn bystanders into lifesavers.

If you're ready to explore treatment options or want to learn more about preventing overdose, Grata Health is here to help. We offer judgment-free care, same-day appointments, and support every step of the way.