Wegovy storage guide
Medically reviewed by
Dr Brenda IkejiLast reviewed: 29 Sept 2025
Wegovy is one of the most commonly prescribed and effective weight loss injections available in the UK. For the best results, it must be stored correctly.
In this guide, we discuss the best ways to store your Wegovy pens, the ideal temperature for storage, and the best way to travel with them.
Wegovy shelf life
Wegovy effectively has 2 shelf lives:
- It can be stored unopened in the fridge until the expiry date printed on both its packaging and the pen itself.
- Once opened, Wegovy must be used within 6 weeks, regardless of whether it’s stored at room temperature or in the refrigerator.
How to store Wegovy correctly
The best way to store Wegovy pens depends on whether they are in use or not.
Before opening a Wegovy pen, it should be stored in a fridge between 2 and 8°C. When you receive your Wegovy pens from us, they will be delivered in temperature-controlled packaging to preserve their effectiveness.
Once a Wegovy pen has been opened, there are 2 ways it can be stored:
- In the fridge, away from the cooling element at 2°C to 8°C.
- At room temperature, but below 30°C.
Wegovy pens should also be stored:
- out of sight and reach of children
- away from heat and direct light
- with the pen cap on
For the best weight loss results with Wegovy, it is essential that the pens are stored correctly. Not storing them correctly could affect the medication, meaning it's not as effective.
Does Wegovy need to be refrigerated?
Yes, before they are opened, Wegovy pens must be stored in the fridge, but you can choose to store them in the fridge or at room temperature once you start using them.
How long does Wegovy last once opened?
Once Wegovy has been opened, it can be kept for up to 6 weeks or by the expiration date, whichever is sooner. After this time, it must be thrown away.
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How long does Wegovy last in the fridge?
Unopened Wegovy pens can be stored in the fridge until the expiry date printed on the label, as long as they are kept between 2 and 8°C.
How long does Wegovy last in the fridge once opened?
Any opened or in-use Wegovy pens can be stored in the fridge for up to 6 weeks from the date they were opened.
How to store Wegovy after first use?
When you have opened a Wegovy pen, you can store it at room temperature (below 30°C) or in the fridge between 2 and 8°C. If you choose to store your opened pens in the fridge, you should:
- keep them away from the cooling element to prevent freezing
- avoid storing them in the fridge door, where the temperature is most likely to fluctuate
- store them in their original, unopened packaging, which clearly shows the expiry date
- only use reliable fridges and not those that are likely to stop working or fluctuate in temperature
How long can Wegovy be out of the fridge?
Opened Wegovy pens can be stored at room temperature for a maximum of 6 weeks. Once 6 weeks have passed or the expiry date has occurred within this time, the pen must be thrown away, even if it still contains some liquid, as it will no longer be effective.
You must not store unopened Wegovy pens out of the fridge. If you’ve stored an unopened pen out of the fridge, you must use it within 6 weeks.
Can I put Wegovy back in the fridge?
Yes, once you have received your Wegovy pens, you will notice they are delivered in temperature-controlled packaging. You must remove them from this and place them straight into the fridge until they are ready to be used. If you have been using Wegovy and storing it at room temperature, you can choose to then store it in the fridge, as long as it is within 6 weeks of opening.
What to do if Wegovy has been stored incorrectly
What you should do if Wegovy has been stored incorrectly will depend on how it has been stored. Here are some possible storage scenarios and what you should do:
| Scenario | What you should do |
|---|---|
You have left an unopened Wegovy pen out of the fridge overnight. |
You will have 6 weeks to use the pen once it has been left out of the fridge. If possible, use this pen as your current pen or after your current pen has been used up, but you must not use it after 6 weeks have passed. |
You have left an open Wegovy pen out of the fridge overnight. |
As long as the room temperature does not go above 30°C, you should be fine to use the pen for up to 6 weeks. Put it back in the fridge as soon as you remember, if you have been storing it this way. |
You have left your Wegovy pen at room temperature and it has gone above 30°C. |
You can no longer use your Wegovy pen if you have stored it at room temperature and it has exceeded 30°C – you must discard the pen. |
You have opened a Wegovy pen and have been using it for less than 6 weeks, but it’s past its expiry date. |
You must not use an opened or unopened Wegovy pen after its expiry date has passed. |
Your Wegovy pen has frozen. |
You must not use a Wegovy pen that has frozen, even if it has not been opened yet. You must throw away any pen that has frozen. |
How to store Wegovy while travelling
If you’re going to travel while taking Wegovy, there are several things you’ll need to consider to make sure your weight loss medication is stored correctly and remains usable and effective. However, this should not put you off travelling with Wegovy because it is perfectly possible to do and is safe:
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For any pens that will be exposed to temperatures above 30°C, you will need to make sure you store them in a fridge between 2 and 8°C. It may be helpful to contact your accommodation provider before travelling to make sure this is possible.
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While travelling to your destination, store your pens in a cool bag to help keep them at the correct temperature. If you are travelling by plane, take Wegovy in a carry-on bag and not in your hold luggage, which can damage your medication. Contact your airline before you fly because you may be able to store your medication in the plane’s fridge for the duration of your flight.
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It is also recommended that you carry your prescription or a doctor’s note stating why you need Wegovy. You may need this when travelling to or entering certain countries, but you should check this before you travel.
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Make sure you've got enough injections to cover your trip. Missing doses can make Wegovy less effective.
When you request Wegovy from Asda Online Doctor, it will be delivered in temperature-controlled packaging via cold delivery. This ensures your medication remains at the correct temperature for 72 hours. Once you have received your order, please place it in the fridge until you’re ready to use it.
We also provide a free doctor’s note with your prescription, which can be accessed through your patient account – this can be used while travelling.
Brenda studied medicine at St Georges University of London and has most recently worked in John Radcliffe Oxford University Hospitals, covering acute and general medicine.
Meet our doctorsLast reviewed: 29 Sept 2025
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