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How to Store Mounjaro and Travel with Your Pen

Learn how to store a Mounjaro KwikPen before and after first use, what to do if it freezes, and how to prepare for travel.

A faceless lavender figure packing a medicine carton in a travel pouch beside a suitcase.

Congratulations on receiving your first pack of Mounjaro. We figured you might need some help on how to store it, so we have prepared this guide for you. Here is what you need to know:

I have just received my pen. What do I need to do?

When you first receive your Mounjaro KwikPen, make sure you store it in the refrigerator at 2°C - 8°C, in its original package, until you decide what day you are going to start using it. Do NOT freeze your pen.

Once a start day is picked and you have used your first dose, you can store your KwikPen refrigerated or at room temperature not exceeding 30°C.

Always store your pen after removing the needle and replacing the cap. Discard your KwikPen after four weekly doses or 30 days after first use, whichever comes first.

Storage guidance for unused and in-use Mounjaro KwikPens.
Storage depends on whether your KwikPen has been used.

Can I still use my in-use pen if I stored it in the fridge?

Yes, provided it has been kept within the recommended temperatures and has not been frozen. The quality of Mounjaro KwikPen is not affected by cycling between the refrigerator and room temperature up to 30°C during the 30-day in-use period. Refrigeration does not restart that period.

I stored Mounjaro pen against the back wall of my fridge and now it is slightly frozen. Can I still use it if thawed?

No. Even if thawed, a Mounjaro pen that has been frozen must be discarded. Ask your pharmacist how to dispose of it.

I forgot to store my unopened pen in the fridge. Is it still safe to use?

An unopened KwikPen should be stored in the refrigerator at 2°C–8°C. If it has been left out, contact your pharmacist with the temperature and how long it was unrefrigerated before using it.

Travelling with a Mounjaro Pen

While using Mounjaro injection, life can happen and travelling with Mounjaro should not be a hassle.

So we’ve prepared a checklist of what you will need to make the journey with your Mounjaro safe:

Day trips and short journeys Flights
Use an insulated medical cooler if needed to maintain the correct temperature
If using frozen gel packs, make sure your pen does not touch them.
Keep an unused pen at 2°C–8°C. After first use, keep it at no more than 30°C. Do not freeze.
Travel-size sharp bin and needles
Keep a copy of your prescription or prescriber letter in hand
Keep your pen in its original labelled package
Inform the security if you’re carrying needles
Keep your pen with you in your hand luggage, maintaining its required storage temperature
Avoid the cargo hold, which may become too hot or too cold
Use an insulated medical travel case if needed to maintain the correct temperature
Keep a copy of your prescription or prescriber letter in hand
Keep your pen in its original labelled package
Travel-size sharp bin and needles
Inform the security if you’re carrying needles
Check international regulations and airport rules for needles and cooling packs
Checklist for carrying a Mounjaro KwikPen on journeys and flights.
Keep your pen with you and protect it from unsuitable temperatures.

Remember NOT to use Mounjaro if:

  • It has been frozen. If you suspect it was exposed to unsuitable temperatures, do not use it until your pharmacist has advised you
  • Mounjaro solution looks cloudy, discoloured, contains particles or the pen is damaged
  • 30 days have passed since the first use of the KwikPen
  • You have taken four weekly doses, even if some solution remains

References

  1. Mounjaro KwikPen 10mg solution for injection in pre-filled pen — Patient Information Leaflet
  2. Mounjaro KwikPen 10mg solution for injection in pre-filled pen — Instructions for use
  3. How should the Mounjaro KwikPen be stored?
  4. How should patients store the Mounjaro KwikPen during transport and travel?
  5. Hand luggage restrictions at UK airports: Medicines, medical equipment and dietary requirements

About the contributors

Author

Noor Altaleb

Pharmacist · MPharm · GPhC number: 2226427

Reviewer

Mustafa Razzak

Superintendent Pharmacist · MPharm · GPhC number: 2215506