Naloxone (NARCAN®) is a medication approved by the Food and Drug Administration to rapidly reverse opioid overdose.
Naloxone is an opioid antagonist, which means it works by binding to opioid receptors in the brain. It helps by blocking the dangerous effects of opioids.
Naloxone is safe to administer even if the person does not have opioids in their system. Naloxone will not reverse overdoses of substances that are not opioids. However, because these drugs are often mixed with fentanyl, an extremely powerful opioid, a person may have taken an opioid without even knowing it.
For this reason, if you suspect a person is experiencing an overdose, it will not hurt them if you administer naloxone–it might even save their life.