Naloxone is a medication that reverses the effects of opioids like pain medications (Oxycontin, Vicodin, Percocet) and heroin. It is used in emergency situations to stop an opioid overdose. It is available without a prescription and good to have on hand if you or someone you love uses opioids.
We highly recommend getting training to administer naloxone. It's online and it's free. You can read more about Narcan nasal spray or the Evzio auto-injector. There are many organizations that do online and in-person trainings.