Support WBUR'Historic' drop in U.S. overdose deaths accelerates as fentanyl crisis easesBrian MannNovember 14, 2024 ShareSome experts credit the spread of naloxone, also known as Narcan, for dramatically lowering the number of fatal drug overdoses in the U.S. The medication reverses most opioid overdoses, including those caused by fentanyl. (Getty Images)