Naloxone is an easy-to-use, life-saving medication that is available for purchase through pharmacies and authorized distributors. It can reverse the effects of an opioid overdose when delivered in a timely manner. Naloxone works by preventing opioids from attaching to the brain. Naloxone can be administered by injection or sprayed into the nose. It can begin working within minutes to restore breathing, consciousness, and save a life.