What Does a Cocaine Overdose Look Like?

When most imagine an overdose, they picture someone slumped over, barely breathing. But a cocaine overdose often looks like the opposite.

And since many of these signs can be mistaken for a bad high, friends and family sometimes wait too long to call for help.

Knowing what to look for, however, could mean the difference between life and death. Below, we take a look at the warning signs of a cocaine overdose, how it changes when other substances are involved, and exactly what to do if it happens in front of you.

Key Takeaways

A cocaine overdose may cause a racing heartbeat, chest pain, sweating, agitation, and confusion.
Severe warning signs include seizures, extreme overheating, irregular heartbeat, and loss of consciousness.
Fentanyl contamination can cause an overdose to include both stimulant and opioid symptoms.
Call 911 immediately if you suspect an overdose. Naloxone can reverse opioid effects but not cocaine toxicity.

What Happens in the Body During a Cocaine Overdose?

Cocaine is a powerful stimulant. It floods the body’s stress response, driving up heart rate, blood pressure, and body temperature. An overdose happens when those effects push past what the heart, brain, and other organs can handle. ¹

At the end of the day, there’s no reliably safe amount. An overdose can happen to someone using for the first time or to someone taking their usual amount, especially if the batch is stronger than expected or mixed with something else. According to MedlinePlus, using cocaine in hot weather can increase the risk even more because dehydration adds to the strain on the body. ²

What Are the Early Warning Signs?

The early signs of a cocaine overdose can happen fast and may include: ³

A racing or pounding heartbeat

Chest pain or tightness

Heavy sweating or feeling overheated

Shaking or tremors

Very wide (dilated) pupils

Nausea or vomiting

Changes in behavior are often just as telling. Someone may seem extremely anxious, panicked, agitated, paranoid, or confused.

What Does a Severe Cocaine Overdose Look Like?

As an overdose gets worse, the signs become more dangerous and easier to spot: ⁴

Seizures

Hallucinations or severe confusion

A very high body temperature

An irregular heartbeat

Trouble breathing

Collapsing or losing consciousness

Behind these symptoms, cocaine can trigger a heart attack, stroke, or life-threatening heart rhythm, even in young people with no known health problems. These emergencies can unfold within minutes, which is why acting fast is of the utmost importance. ⁵

Early Warning Signs	Severe Warning Signs
Racing or pounding heartbeat	Irregular heartbeat or collapse
Anxiety, panic, or agitation	Severe confusion or seizures
Heavy sweating or feeling overheated	Dangerously high body temperature
Shaking, tremors, or nausea	Trouble breathing or loss of consciousness

How Is a Cocaine Overdose Different From an Opioid Overdose?

Put simply, cocaine speeds the body up, while opioids slow it down. Someone overdosing on cocaine is usually hot, sweaty, agitated, and has a racing heart. Someone overdosing on an opioid, such as fentanyl, tends to have tiny pupils, slow or shallow breathing, bluish lips, and may not respond at all. ⁶

In a CDC report, nearly 79% of overdose deaths involving cocaine in 2021 also involved an opioid. ⁷ Plus, fentanyl is often mixed into cocaine without the person knowing. ⁸ This means a cocaine overdose may show signs of both, or even shift from agitation to unresponsiveness.

Why Is Mixing Cocaine and Alcohol So Dangerous?

Many people drink while using cocaine, often because alcohol takes the edge off. But when the two are combined, the liver creates a separate substance called cocaethylene, which puts extra stress on the heart.

In fact, a systematic review found that cocaethylene was linked to an 18- to 25-fold higher risk of sudden death compared with cocaine alone. ⁹ Alcohol can also hide how hard cocaine is hitting the body, making it harder to recognize when something is wrong. If drinking has become part of the pattern, support for alcohol addiction can be part of the same recovery plan.

What Should You Do If Someone Is Overdosing on Cocaine?

If you think someone is overdosing, take the following steps: ¹⁰

Call 911 right away. Tell the dispatcher what the person took, if you know.

Keep them calm and cool. Move them to a quiet, cooler space and speak in a steady, reassuring voice.

Protect them during a seizure. Clear away anything they could hit. Don't hold them down or put anything in their mouth. ¹¹

Give naloxone (Narcan) if they become unresponsive or their breathing slows. Narcan won't reverse cocaine, but it can reverse fentanyl or other opioids that may be mixed in. ¹²

Stay with them until help arrives.

Getting Help for Addiction

Surviving an overdose can be a frightening wake-up call. It’s often the moment people realize their body has been under far more strain than they knew. But also, you don’t have to hit rock bottom to get help.

At Freedom Recovery Centers (FRC), our residential treatment program gives you a safe, structured place to rest, heal, and build new tools for life after cocaine. We’re here to help you through it. When you’re ready to explore rehab, our staff is ready to support you; call us anytime at 804-635-3746.

Frequently Asked Questions

How long does a cocaine overdose last?

It depends on how much was taken and whether other substances are involved. However, it’s worth noting that symptoms can turn dangerous within minutes, and some effects may last for hours. If you suspect an overdose, call 911 immediately. ¹³

Can you overdose on cocaine the first time you use it?

Yes, a person’s first use can lead to an overdose, especially if the cocaine is unusually strong, mixed with fentanyl, or taken with alcohol.

Does Narcan work on a cocaine overdose?

Narcan doesn’t reverse the effects of cocaine itself. However, because fentanyl is so often mixed into cocaine, giving Narcan to someone who is unresponsive or breathing slowly can still save their life.

What happens at the hospital after a cocaine overdose?

There’s no antidote for cocaine, so doctors often attempt to treat the symptoms. This may include medicines to control agitation, seizures, and high blood pressure, along with monitoring of the heart and other organs. ¹⁴

Can someone have a cocaine overdose without losing consciousness?

Yes. A person may remain awake while experiencing dangerous symptoms such as chest pain, severe agitation, or overheating, so call 911 if you suspect an overdose.