Healthdirect Free Australian health advice you can count on.

Medical problem? Call 1800 022 222. If you need urgent medical help, call triple zero immediately

healthdirect Australia is a free service where you can talk to a nurse or doctor who can help you know what to do.

beginning of content

Cocaine

11-minute read

Key facts

  • Cocaine (coke) is an illegal and highly addictive drug.
  • Cocaine use can cause unwanted side effects, such as psychosis and dependence.
  • A cocaine overdose can be fatal.
  • If you want to stop using cocaine, speak to your doctor.

What is cocaine?

Cocaine is an illegal, highly addictive drug made from the leaves of the South American coca bush.

It’s a central nervous system stimulant, which causes high levels of dopamine to be released. Dopamine is a brain chemical associated with pleasure and reward.

Cocaine is also known as:

  • blow
  • C
  • Charlie
  • coke
  • crack
  • nose candy
  • snow
  • stardust
  • toot
  • white dust
  • white lady

Cocaine is typically snorted through your nose, but it can also be:

  • injected
  • rubbed into your gums
  • added to food and drinks

It comes in 3 main forms:

  1. cocaine hydrochloride
  2. freebase
  3. crack

Cocaine hydrochloride is a white powder usually mixed or 'cut' with other substances. It has a bitter, numbing taste.

Freebase (alkaloidal cocaine) is a chemically different white powder.

Crack cocaine is the same as freebase, but in the form of larger crystals. Freebase and crack are usually smoked.

What are the effects of taking cocaine?

People who use cocaine get a rush, making them feel:

  • happy
  • confident
  • alert

Other psychological effects may include:

  • feeling excited, energetic or restless
  • feeling upset
  • feeling numb
  • changes to your sex drive
  • loss of motivation
  • difficulty concentrating

Some physical effects of taking cocaine are:

These effects start a few minutes after taking cocaine and may last from a few minutes to a few hours.

How cocaine affects you can depend on:

  • how much you take
  • how strong the cocaine is
  • your size, height and weight
  • whether you use cocaine regularly
  • whether you take other drugs at the same time

What can go wrong with cocaine?

After taking cocaine, you may:

  • take risks
  • feel anxious or agitated
  • ignore pain
  • display unpredictable or violent behaviour

These effects can increase your chance of harm.

When coming down from cocaine, you may feel:

Laced cocaine

Sometimes cocaine batches are mixed, laced or ‘cut’ with other substances. These can have harmful effects, such as damage to your:

Mixed or laced drugs also prevent the user from knowing how much cocaine they are taking. This raises the chance of having an overdose or other harm.

Overdose

If you think someone has overdosed on cocaine, call triple zero (000) for an ambulance.

You can overdose on cocaine if you have too much, or if you use a strong batch.

A person who has overdosed may:

  • have trouble breathing
  • be very panicked, agitated or paranoid
  • hallucinate
  • have tremors
  • feel nauseous (feel sick)
  • vomit (be sick)
  • have a high temperature

An overdose can cause:

These can lead to a coma and death.

If you think someone has overdosed on cocaine, call triple zero (000) for an ambulance. Ambulance officers don't have to call the police.

What long-term problems does cocaine cause?

People who use cocaine regularly can experience:

They are at higher risk of:

If you are pregnant, cocaine can harm you and your baby. It can also increase the chance of complications like:

Some long-term users may develop psychosis, which makes you:

  • paranoid
  • experience hallucinations or unusual thoughts
  • behave differently than usual

These effects usually disappear within a few weeks of when you stop using cocaine.

Long-term users are at risk of social and financial problems. Cocaine use has also been linked to criminal behaviour.

Find out more about how drugs and alcohol can impact your health.

Snorting cocaine

Snorting cocaine can also damage the lining of your nose, raising your chance of:

  • nosebleeds
  • nose infections
  • sinus problems
  • damage to your nose

Injecting cocaine

Injecting cocaine and sharing needles can place you at risk of infections:

Cocaine tolerance

If you use cocaine, you have a risk of becoming tolerant to cocaine. This means that you need to take higher doses of cocaine to get the same effect.

Doing this puts you at a higher chance of an overdose or having side effects.

Cocaine addiction and dependence

Cocaine is highly addictive. It is very hard to stop using cocaine once you are addicted. Addiction might make you crave cocaine and spend a lot of time thinking about the drug and trying to get it. This can impact your:

  • home and work life
  • relationships
  • finances

You can also become dependent on cocaine. If you are dependent on a drug you will get withdrawal symptoms if you reduce or stop using it.

What are cocaine withdrawal symptoms?

People withdrawing from cocaine may intensely crave it. You may also:

  • feel angry or upset
  • have nausea and vomiting
  • shake
  • have muscle pain
  • feel tired and weak
  • feel hungry

Cocaine withdrawal can also:

These symptoms can last for months.

If you, or someone you know, is having suicidal thoughts and is in immediate danger, call triple zero (000). To talk to someone now, call Suicide Call Back Service 1300 659 467 or Lifeline on 13 11 14.

What if I use other drugs or alcohol with cocaine?

You should not take cocaine with other drugs, such as:

Taking other drugs to cope with the side effects of cocaine can lead to dependence on several drugs at once.

Drinking alcohol and using cocaine can make the drug affect you for longer.

How can I stop using cocaine?

Getting off cocaine can be hard. It's important to speak with your doctor. They can help you manage withdrawal symptoms, and advise you on treatment options, such as:

FIND A HEALTH SERVICE — The Service Finder can help you find doctors, pharmacies, hospitals and other health services.

Resources and support

You can find support and more information about cocaine through:

You can also call the healthdirect helpline on 1800 022 222 (known as NURSE-ON-CALL in Victoria). A registered nurse is available to speak with 24 hours a day, 7 days a week.

Support for injection behaviour

If you inject cocaine or other drugs, you can reduce your risk of blood-borne disease by attending a needle and syringe program (NSP).

Needle and syringe programs provide clean needles or syringes to people who inject drugs. It's sometimes referred to as 'needle exchange'.

The types of needle and syringe programs vary, from pharmacies to vending machines.

Aboriginal and/or Torres Strait Islander peoples

If you are an Aboriginal and/or Torres Strait Islander person there is information and support available:

Other languages

The 'Where can I get help when alcohol or drugs are a problem?' video is available in languages other than English. Find it at Health Translations Victoria.

Learn more here about the development and quality assurance of healthdirect content.

Last reviewed: January 2025


Back To Top

Need more information?

These trusted information partners have more on this topic.

Top results

Cocaine: tolerance and dependence - myDr.com.au

After prolonged use, cocaine is highly addictive and with regular use, larger amounts of cocaine are needed to get the same effect.

Read more on MyDoctor website

Cocaine: what are the effects? - myDr.com.au

Read about the various effects of taking cocaine from the immediate effects of the rush to the crash that can follow afterwards and the long-term effects of cocaine use.

Read more on MyDoctor website

Cocaine - Better Health Channel

Cocaine is a highly addictive illegal stimulant that has serious side effects.

Read more on Better Health Channel website

Cocaine: use with other drugs - myDr.com.au

Snorting and injecting cocaine can result in long-term effects on your health. Using other stimulants such as ecstasy with cocaine can increase the risk of overdose.

Read more on MyDoctor website

Cocaine: what is it? - myDr.com.au

Cocaine is a stimulant drug and is made from the leaves of the coca bush. It is most commonly snorted.

Read more on MyDoctor website

Cocaine - Alcohol and Drug Foundation

Cocaine is a stimulant drug, which means that it speeds up the messages travelling between the brain and the rest of the body.

Read more on Alcohol and Drug Foundation website

Amphetamines and Cocaine - Alcohol and Other Drugs Knowledge Centre

Amphetamines and Cocaine Crystal methamphetamine is the most common form of methamphetamine used in Australia [47961]

Read more on Australian Indigenous HealthInfoNet website

What Is Cocaine & The Effects on Mental Health | headspace

Cocaine use and mental health is an issue that effects many young people. Learn more about the affects of cocaine and how you can get help from headspace..

Read more on headspace website

Cocaine Side Effects, Addiction and Overdose | Your Room

Cocaine is a stimulant drug with many side effects. Find out what to do in the case of addiction or overdose and places to get help and treatment.

Read more on NSW Health website

Illicit Drugs - General - Alcohol and Other Drugs Knowledge Centre

Illicit Drugs – General An illicit drug is one that is illegal to have (for example, cannabis, heroin, and cocaine), and the non-medical use of drugs that are legally available such as pain killers and sleeping pills [22491][33425]

Read more on Australian Indigenous HealthInfoNet website

Healthdirect 24hr 7 days a week hotline

24 hour health advice you can count on

1800 022 222

Government Accredited with over 140 information partners

We are a government-funded service, providing quality, approved health information and advice

Australian Government, health department logo ACT Government logo New South Wales government, health department logo Northen Territory Government logo Queensland Government logo Government of South Australia, health department logo Tasmanian government logo Victorian government logo Government of Western Australia, health department logo

Healthdirect Australia acknowledges the Traditional Owners of Country throughout Australia and their continuing connection to land, sea and community. We pay our respects to the Traditional Owners and to Elders both past and present.