How long does mircera prefilled inj. last outside fridge?

Mircera® (tirzepatide) pre‑filled syringe – room‑temperature stability

Key points

1. Keep it refrigerated until ready to use.
   The syringe should stay in a refrigerator (2 °C – 8 °C) until you are ready to administer the dose.

2. Room‑temperature window.
   Once taken out of the fridge, Mircera® can safely remain at room temperature (2 °C – 30 °C) for up to 4 weeks.

3. Temperature limits matter.

   • If the syringe is stored at temperatures above 30 °C (e.g., in a hot vehicle, kitchen, or a sunny spot), the product may degrade more quickly.
   • If the syringe is kept outside 2 °C – 30 °C for more than 4 weeks, it should be discarded, as the potency and safety cannot be guaranteed.

4. Check the syringe label.
   The pre‑filled syringe usually has a “use within 4 weeks” stamp after the refrigerated period has ended.

5. Do not freeze.
   The product is not intended for freezing; freezing can damage the formulation.

Practical Tips

• Travel – If you’re traveling, keep the syringe in a cooler bag with an ice pack until you’re ready to administer it.
• Day‑to‑day use – If you use Mircera weekly, you can leave the syringe out of the fridge for the week before each injection, but not beyond the 4‑week window.
• Discard after 4 weeks – Even if the syringe still looks fine, it’s safest to replace it after the 4‑week period.

Bottom line: Mircera pre‑filled injections can stay at room temperature for up to 4 weeks (provided the temperature stays between 2 °C and 30 °C). After that, they should be discarded and replaced with a fresh syringe. If you’re unsure or if the syringe has been left out longer, it’s safest to err on the side of caution and get a new one.