Naloxone is a medication used to rapidly reverse opioid overdoses. It works by binding to the same receptors in the brain that opioids attach to, effectively blocking their effects. This can restore normal breathing and consciousness in someone who has overdosed on opioids, such as heroin or prescription painkillers. Naloxone can be administered through an injection or a nasal spray, making it accessible for emergency situations. It is often carried by first responders and can also be obtained by individuals at risk of an overdose or their loved ones. Training on its use is widely available to ensure effective response during an overdose crisis.