Heroin

A powerful opiate that’s usually sold as a white or brown powder.

Also called:

Brown
Gear
H
Horse
Skag
Smack

Quick info

How the drug works varies from person to person

How you might feel: Happy, relaxed, euphoric and/or sleepy, often in a ‘rush’ of effects.; Read more about how it feels

Effects on your body: You might feel sick and vomit, especially if not used to the effect. Drowsy, dry mouth, heart rate and breathing slow down.; Read more about how it feels

How long it takes to work: If smoking or injecting heroin, the effects kick in immediately. Snorting takes a few minutes to have an effect.; Read more about how long it takes to work

How long the effects last: Smoking effects last for up to an hour. Injecting or snorting lasts longer and can be more intense. After effects can last much longer, however you take it.; Read more about how long the effects last

Common risks: Risk of overdose and death is high. Mixing heroin with other downers (including methadone, alcohol, and benzodiazepines) is extremely dangerous. Heroin is highly addictive so you may become dependent on it and need more to get the same effect.; Read more about the risks

Mixing drugs: Mixing drugs is always risky but some mixtures are more dangerous than others.; Read more about mixing with other drugs

What does it look like?

As it’s cut with different substances, the colour of street heroin in the UK ranges from brownish white to brown.

Heroin is a drug made from morphine, which is extracted from the opium poppy.

Drugs made from opium are called opiates, and are often used as painkillers.

What does it taste/smell like?

Heroin can have a vinegary smell but can also be odourless. It normally has a bitter taste.

How long the effects last and the drug stays in your system depends on how much you’ve taken, your size and what other drugs you may have also taken.

To kick in:

When smoked, the effects of heroin usually kick in within a few minutes.

How long it lasts:

The effects can last for around an hour.

After effects:

The after effects of smoking heroin can last for several hours, so it’s important to be careful if you are using any other drugs or alcohol in that time.

How long will it be detectable?

Heroin will typically show up in a urine sample for 2 to 3 days.

How long a drug can be detected for depends on how much is taken and which testing kit is used. This is only a general guide.

Physical health risks

It’s very easy to overdose from heroin, which kills far more people in the UK than any other illegal drug.
If you overdose you may begin to feel very sleepy. Your breathing will slow and you can fall into a coma. If your breathing slows too much you could die.
If you have been taking heroin regularly you may have built up some tolerance. However, if you then stop taking heroin for just for a few days, your tolerance will rapidly drop and you risk an overdose if you simply take the same dose you previously took.
Injecting heroin is very dangerous. It’s easier to overdose from injecting than from other ways of taking the drug. You also risk damaging veins and developing infections and blood clots. Sharing needles and syringes is also very dangerous as you run the risk of catching or spreading a virus, such as HIV, hepatitis B or hepatitis C.
If heroin is taken with other drugs, particularly other sedative drugs such as alcohol, then overdose is more likely. Other sedating drugs – such as benzodiazepine tranquillisers or methadone – are also linked with deaths from heroin overdose.
There's also a risk of death due to inhaling vomit. Heroin sedates you and stops you from properly coughing. If you vomit you won’t be able to cough and clear your throat. The vomit can then block your breathing.
Injecting heroin can do nasty damage to your veins and arteries, and has been known to lead to gangrene (death of body tissue, usually a finger, toe or a limb) and to infections.

What is heroin cut with?

Heroin is often cut with other things, for example highly-potent opioids (like fentanyls) which are even more dangerous than heroin itself.

Other substances including sedatives like benzodiazepines and barbiturates can also be added to heroin.

It’s common for heroin to be mixed with a variety of other substances, such as sugar, starch, powdered milk, quinine or paracetamol – as these increase the weight and the drug dealer’s profits.

Can you get addicted?

Yes, heroin is highly addictive. Over time, the effects of heroin on the brain can cause cravings and a strong drive to keep on using.

As heroin is used on a regular basis, the body builds up a tolerance, so that users have to start taking more and more.

Doctors have developed a number of effective ways to treat addiction to street heroin. These include using certain safer drugs to replace the street heroin, such as methadone and buprenorphine.

Other drugs that block the effects of heroin (so you can't get a high) are available once you become drug-free. All these drug treatments are intended to supplement the counselling and social support that’s normally needed to help in becoming drug-free and to recover from addiction.

Class: A

This is a Class A drug, which means it's illegal to have for yourself, give away or sell.
Possession can get you up to 7 years in prison, an unlimited fine or both.
Supplying someone else, even your friends, can get you life in prison, an unlimited fine or both.

Like drink-driving, driving when high is dangerous and illegal. If you’re caught driving under the influence, you may receive a heavy fine, driving ban, or prison sentence.

If the police catch people supplying illegal drugs in a home, club, bar or hostel, they can potentially prosecute the landlord, club owner or any other person concerned in the management of the premises.

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What to do in an emergency

If you or someone else needs urgent help after taking drugs or drinking, call 999 for an ambulance. Tell the crew everything you know. It could save their life.

What else to do in an emergency

Heroin

Quick info

What does it look like?

What does it taste/smell like?

By smoking it

By injecting it

By snorting it

How does it make you feel?

How does it make people behave?

To kick in:

How long it lasts:

After effects:

How long will it be detectable?

Physical health risks

What is heroin cut with?

Is it dangerous to mix with other drugs?

What happens if I mix Heroin and

Can you get addicted?

What to do in an emergency

Heroin

Quick info

How it looks, tastes and smells

How do people take it?

How it feels

Duration

The risks

Mixing

Addiction

The law

What to do in an emergency