Does Narcan Have an Expiration Date?

The Food and Drug Administration (FDA) has approved an extended shelf life for Narcan® (naloxone) Nasal Spray, increasing it from 24 months to 36 months.

How long is narcan good after expiration?

Narcan, a nasal spray, was found to be stable for 10 months after its expiration date. Evzio, given as an injection, was found to be stable for at least a year after its expiration date, CNN reports.

Does expired naloxone still work?

Can expired naloxone still save a life? Some studies have been done on expired naloxone and naloxone exposed to extreme temperatures that involved repeated freezing and thawing, which found that naloxone may still be stable and effective in reversing opioid effects in an emergency.