Final answer:
Narcan (Naloxone) can remain effective past its expiration date, although it is recommended to check with a healthcare professional or pharmacist for specific information on its effectiveness. Studies have shown that properly stored Narcan can retain full potency even after several years past its expiration date.
Step-by-step explanation:
Narcan (Naloxone) is an opioid-overdose antidote that helps counteract the effects of opioids on the respiratory system. The expiration date on medication indicates the period during which the manufacturer guarantees the drug's potency and safety. While the effectiveness of Narcan past its expiration date may vary, studies have shown that it remains effective for several years after expiration when stored properly.
One study found that ampules of Narcan stored under ideal conditions retained 100% potency after five years past their expiration date. However, it is recommended to check with a healthcare professional or pharmacist for specific information about the effectiveness of expired Narcan, as individual storage conditions can affect the drug's stability.