Naloxone is used to reverse an opioid overdose and help restore breathing by blocking or reversing the opioid effects. 
It comes as a nasal spray or an injection.

• Learn how to use naloxone before it is needed.
• It is easily accessed without prescription.
• Side effects of Naloxone include the taken drug’s withdrawal symptoms.
• Naloxone should be used as soon as possible to treat a known or suspected opioid overdose emergency, if there are signs of slowed breathing, severe sleepiness or the person is not able to respond (loss of consciousness). Once naloxone has been given the patient must receive emergency medical care straight away, even if they wake up.
• Even if you are not sure an opioid overdose has occurred, if the person is not breathing or is unresponsive, give the naloxone right away and then seek emergency medical care.
• Naloxone may not be advised for those with heart problems or who are pregnant. Please, before a situation even occurs, ask your doctor about it so that you will know and those who care for you can be prepared in case it may ever need to be used.
  In the case it is needed for life-saving help, once medical personnel arrive; they should be alerted that Naloxone has been given, in the case of pregnancy or of heart conditions.