It was cast as a lifesaving medication, a “best-in-class” overdose antidote built specifically for the fentanyl era. It was far more powerful than Narcan, the nasal spray it was designed to supplant. Data suggested that the newer spray, Opvee, would restore breathing faster, averting death and brain injury for thousands of Americans who experience an opioid overdose. As billions of opioid settlement dollars became available to public health programs, the medication’s manufacturer projected annual profits as high as $250 million. AdvertisementBarely two years since its launch, the medication’s manufacturer, Indivior, has largely abandoned it.