How long is menopur good for after expiration date?

Short answer:
You should not use Menopur (human menopausal gonadotropin) after its labeled expiration date. The expiration date is set to guarantee that the medication is both safe and effective up to that point. Once the date has passed, there is no reliable data indicating how long, if at all, the drug will still work—or whether it could be unsafe.

Why the expiration date matters

What does the manufacturer say?

Menopur is a sterile, protein‑based injectable. The label states:

“Reconstituted Menopur is stable for 12 weeks when stored at 2 °C to 8 °C and should be used within 12 weeks after reconstitution.”
The label does not provide any data indicating that the drug remains safe or effective after the stated expiration date.

Practical take‑aways

If you accidentally use an expired vial

1. Monitor for any unusual symptoms (pain, swelling, redness, fever, etc.).
2. Report the incident to your prescribing clinician and the pharmacy.
3. Document the date of expiration, your decision to use it, and any outcomes.
4. Consider a new prescription to avoid potential efficacy or safety issues.

Bottom line

• Never use Menopur beyond its expiration date.
• If you have an expired vial, contact your healthcare provider or pharmacist.
• For future cycles, order fresh vials and keep them stored properly (2 °C – 8 °C, protected from light, reconstituted within 12 weeks, and used within 5 days after injection).

Safety and efficacy are the priorities—better to be cautious and get a new vial than risk an ineffective or unsafe treatment.