Definition
Naloxone is a medication used to rapidly reverse the effects of an opioid overdose. It works by blocking the opioid receptors in the brain, kind of like changing the channel on a TV that's stuck on one station. It's a pure opioid antagonist, meaning it has no opioid effects of its own. It can quickly restore normal breathing in someone who has overdosed. Naloxone is commonly administered as a nasal spray or injection. Think of it as an immediate 'undo' button for opioid overdoses.