Lunch break lesson: how to reverse an opioid overdose At a small shop selling handmade jewelry in South Philadelphia, employees are skipping their lunch break for a good cause. They are getting training they all wanted - in how to save someone who has overdosed on opioids. The group of four is learning how to administer a dose of naloxone, a medication used to block or reverse the effects of the highly addictive painkillers.\\n IMAGES AND SOUNDBITES