What is naloxone? 

Naloxone is a medicine that rapidly reverses an opioid overdose. It is an antagonist. This means that it attaches to opioid receptors and reverses and blocks the effects of other opioids. Naloxone can quickly restore normal breathing to a person if their breathing has slowed or stopped because of an opioid overdose.

How is naloxone administered?

Naloxone should be given to any person who shows signs of an opioid overdose or when an overdose is suspected. Naloxone can be given as a spray or it can be injected into the muscle, under the skin, or in the veins.