Walgreens on Wednesday said it will offer its own cheaper version of the over-the-counter opioid overdose reversal spray naloxone. The drug is available online and will be in all stores at the end of the month. The drug store retailer aims to boost the availability of the life-saving medication in the U.S. as the nation grapples with the toll of the opioid epidemic and attempts to bring down alarmingly high drug fatality rates. More than 645,000 people died from overdoses involving any opioid, including pre ...