Mounjaro is a prescription medication used as part of a medically supervised weight loss programme. Like many injectable medicines, it must be stored correctly to remain safe and effective. Incorrect storage can reduce its effectiveness or make it unsafe to use, which is why understanding how to store Mounjaro at home is essential for anyone using it as part of their treatment.
In this guide, we explain how to store Mounjaro properly, what temperatures are safe, how to handle it when travelling, and what to do if you think it has been stored incorrectly.
The Importance of Storing Mounjaro Correctly
Mounjaro contains tirzepatide, which is sensitive to temperature and light. If it is exposed to conditions outside the recommended storage range, the medication may break down. This can make it less effective or, in some cases, unsafe to use.
Following the correct storage guidelines helps ensure you receive the full benefit of your treatment and supports consistent results throughout your weight loss journey.
How To Store Mounjaro In The Fridge
Most people will store their Mounjaro pens in the refrigerator. This is the preferred method for maintaining the medication’s stability over time.
Correct Fridge Temperature
Mounjaro should be stored in a refrigerator between 2°C and 8°C. It should never be frozen. If the medication freezes at any point, it must not be used, even if it later thaws.
Best Place In The Fridge
Store Mounjaro in the main body of the fridge rather than in the door, where temperatures can fluctuate. Keep it away from the freezer compartment and cooling elements to reduce the risk of freezing.
Keep It In Its Original Packaging
The original packaging protects Mounjaro from light. Always keep the pen in its box until you are ready to use it.
Storing Mounjaro At Room Temperature
Mounjaro can be stored at room temperature for a limited time if needed. This can be useful when travelling or if fridge access is temporarily unavailable.
- Mounjaro can be kept at temperatures up to 30°C
- It can remain at room temperature for a maximum of 21 days
- Once stored at room temperature, it should not be returned to the fridge
Always note the date when you remove Mounjaro from the fridge so you do not exceed the recommended time limit. For guidance on whether your pen is still safe to use, contact us for guidance. Our team are always available to offer expert support throughout your weight loss journey. Check out our recent TikTok to see how we can help you take control of your weight management goals:
@heald.green.pharm Ready to take control of your weight loss journey? At Heald Green Pharmacy we make it simple, safe, and effective from your first consultation to hassle-free repeat orders. Your goals, our care. #HealdGreen #OnlinePharmacy #Pharmacy #WeightLossJourney #WeightLoss ♬ original sound - Heald Green Pharmacy
How To Store Mounjaro Once Opened
Mounjaro pens are single use and are disposed of after one injection. This means there is no long-term storage required once a pen has been used. Unused pens should continue to be stored according to the fridge or room temperature guidelines until their expiry date.
Always check the expiry date before use and do not use the medication if it has passed this date, even if it has been stored correctly.
Travelling With Mounjaro
If you are travelling while using Mounjaro, planning ahead is important to maintain proper storage conditions.
Short Trips
For short trips, Mounjaro can usually be kept at room temperature as long as it stays below 30°C and within the 21-day limit.
Longer Journeys
For longer journeys, consider using an insulated travel case with a cool pack. Ensure the medication does not come into direct contact with ice packs to prevent freezing.
Call us to speak to our team before travelling for tailored guidance on safe storage options.
What To Do If Mounjaro Is Stored Incorrectly
If Mounjaro has been frozen, exposed to high temperatures, or left out for longer than recommended, it should not be used. Signs that the medication may be compromised include cloudiness, particles in the solution, or damage to the pen.
When in doubt, do not inject the medication. Contact us to speak to one of our healthcare professionals for advice on next steps and replacement options.
Safe Mounjaro Storage Tips At Home
- Keep Mounjaro out of reach of children and pets
- Store it in a clean, dry area of the fridge
- Avoid exposure to direct sunlight
- Do not shake the pen
Expert Guidance Throughout Your Weight Loss Journey
At Manchester Weight Loss Clinic, we provide ongoing support alongside your treatment, including advice on safe storage, usage, and general care. Proper storage plays an important role in achieving consistent and effective results.
If you have questions about storing Mounjaro or need further guidance as part of your programme, book now to speak with our experienced clinical team.
This blog was written on behalf of Manchester Weight Loss Clinic by Pharmacy Mentor.