The extension to a four-year shelf-life helps improve naloxone access as communities continue to grapple with the growing opioid epidemic; product with the extended shelf life has officially begun shipping WINNIPEG, Manitoba, July 22, 2024 (GLOBE NEWSWIRE) -- Today, Emergent BioSolutions announced the shelf-life extension for NARCAN® Nasal Spray from three years (36 months) to four years (48 months) to all newly manufactured product. The update makes NARCAN® Nasal Spray the only 4 mg, intranasal naloxone sp ...