If someone has overdosed, put them in the recovery position and keep watching them. You need to know if they are asleep or unconscious. You can find out by shouting or pinching their ear.
They are unconscious if you can’t wake them or they are showing other signs of unconsciousness such as:
snoring deeply, turning blue; or not breathing
Don’t panic
Put them in the recovery position
Dial 999 and ask for an ambulance
Stay with them until the ambulance arrives
If someone is unconscious they need an ambulance. If you are worried about the police coming, don’t mention drugs when you dial 999. Tell them you’ve found someone unconscious and explain what has happened when the ambulance arrives.
Make sure there is no shouting or panic in the background when you dial 999 to reduce the chances of the police coming.
Remember: if you don’t call an ambulance and someone dies, the police will always come so that they can inform relatives and investigate the death. If the person who died had been given an injection by someone else, there could be a charge of manslaughter.
Calling an ambulance saves lives
Mouth-to-mouth
If the person stops breathing, give them 10 breaths of mouth-to-mouth resuscitation. Then, if you haven’t already done it, call an ambulance.
Giving mouth-to-mouth

If you are giving mouth-to-mouth but find that the person isn’t moving at all (look to see if their eyes are moving) or is getting bluer or colder
Don’t waste time looking for a pulse
Start chest compression straightaway.
Chest compression (also known as heart massage)
Even if their heart is still beating, if they are not moving and are getting bluer or colder, their heartbeat can’t be that strong. You won’t do any harm by starting chest compressions, and you could save their life.
Giving chest compression


If their heart starts beating again, and their colour changes from blue to pink, stop chest compressions and continue with mouth-to-mouth if necessary
There are lots of myths about what to do to bring someone round when they have overdosed. But if someone has taken a lethal dose of drugs, there is nothing you can do to wake them up – call an ambulance. The paramedics can then give them naloxone (the heroin antidote) and oxygen.
Myth 1 - ‘Walking people around helps’ – Wrong!
Trying to walk people around may make things worse because it wastes time, and there is a risk they might fall. It is also possible that, as the heartbeat increases with the exercise, the drugs will be absorbed into their bloodstream more quickly.
Myth 2 - ‘Putting people in a cold bath wakes them up’ – Wrong!
If you know of people who woke up when they were put in the bath, it was because they were lucky and hadn’t taken a lethal dose. It was not because they were put in the bath.
Putting people in the bath is dangerous because it takes time to run the bath and they could die while it is filling. There is also a risk of injury while they are being put in the bath and taken out, and of drowning while they are in there.
Myth 3 - ‘Slapping or hurting someone can bring them round’ – Wrong!
You do need to know if someone is sleeping or unconscious. You can tell this by shouting at them, or pinching their ear. Anything more drastic won’t make any difference to whether or not they come round.
If shouting and pinching doesn’t wake them, they are unconscious and you need to call an ambulance and start first-aid.
Myth 4 - ‘Injecting people with salt water is an antidote to overdose’ – Wrong!
Some people think that giving an injection of salt water to someone who has overdosed will bring them round.
Injecting salt water is dangerous because:
It wastes time when you should be putting the person in the recovery position and calling for an ambulance; and
if, in the panic, you give the salt water in a used syringe, it could give them HIV or hepatitis.
The idea of injecting people with salt water might have come from people seeing friends in hospital being given a saline (salt) drip. But the drip is only put up to keep a vein ‘open’ so they can inject medication. The salt doesn’t affect the overdose at all.
This information has been taken from The National Treatment Agency (NTA) web site. It has been copied from the leaflet entitled “Overdose – everything you need to know”, which is the authoritative source.
To reduce your chances of overdose and improve you and your friends’ ability to help anyone who has taken an overdose, you should read the whole leaflet and others recommended on our Medical Advice and Alerts page.