
Without opioid painkillers to dull the ache in his knees and other joints, Arnold Wilson wouldn't be able to walk half a block. The 63-year-old former New York City nurse has crippling arthritis for which he takes OxyContin twice a day and oxycodone when he needs additional relief.
For the past several years, he's kept another drug on hand as well: naloxone, an overdose reversal drug often referred to by the brand name Narcan.