Mefenamic acid expired?

If you’re asking about using expired mefenamic acid: do not use it. Expiration dates indicate the point at which the manufacturer can guarantee the drug’s potency and safety. After that date, the medicine may be less effective and there’s no guarantee about safety.

What to do with expired mefenamic acid:
- Do not take it.
- Dispose safely: keep it in the original container, mix with an undesirable substance (e.g., coffee grounds, cat litter, or dirt) in a sealed bag or container, and throw it in the household trash. Remove identifying information from the bottle.
- If a drug take-back program or pharmacy disposal option is available, use that instead.

If you need pain relief now:
- Consider an alternative that isn’t expired, such as acetaminophen (paracetamol) or an NSAID you have that is non-expired, unless you have contraindications (liver disease, stomach ulcers, kidney issues, or interactions with other meds).
- If you’re unsure about what’s safe for you, or you’re in persistent pain, talk to a pharmacist or clinician for guidance.

If you want, tell me your location and I can help find local drug take-back options or safer substitutes.