Do You Need to Keep Wegovy in the Fridge?

Wegovy pens are prescription-only, once-weekly injectable medicines. Like many biological medicines, semaglutide is sensitive to temperature, which is why correct storage matters from the moment your pens are dispensed.

Refrigerator storage (unused pens)

Unused pens should be kept in a refrigerator, typically between 2°C and 8°C. Keep them away from the freezer compartment — a pen that has been frozen should not be used. Store pens in their original carton to protect them from light.

Room-temperature storage (in-use or travelling)

Once taken out of the fridge, a Wegovy pen can generally be stored at room temperature (below 30°C) for a limited time — check the leaflet that came with your pen or the electronic Medicines Compendium (eMC) for the precise number of days, as product information is the definitive reference. After that window, the pen should be discarded even if it still contains medicine.

Practical tips to protect your pens

• Never leave a pen in direct sunlight or in a hot car.
• Do not store pens in a freezer or next to ice packs.
• Check the expiry date printed on the carton before each injection.
• If you are unsure whether a pen has been stored correctly, contact your prescriber or pharmacist before using it.

Storage questions apply equally if you use Mounjaro — see our guide on keeping Mounjaro pens stored safely for a comparison. You may also find it useful to review how Wegovy fridge storage works in practice and whether you have to refrigerate Wegovy at all times for more detail on each scenario.

Keeping track of when each pen was taken out of the fridge — and therefore when its room-temperature window expires — is easy to forget, especially when life is busy. GLP Trackr's dose-logging feature lets you record the date and time of every injection, giving you a clear history of when each pen was opened and used.

Pair that with the app's dose reminders and you have a simple system: log the pen when you open it, set your weekly reminder, and never lose track of where you are in your treatment schedule. If you ever need to discuss storage concerns or a potentially compromised pen with your prescriber, your logged history is right there to refer to.

For a broader look at managing your Wegovy journey — from injection-site rotation to tracking side effects and progress — visit our GLP-1 medicine tracking hub.

A note on safety: if you are ever uncertain whether a pen has been stored at the right temperature, do not use it without first speaking to your pharmacist or prescriber. They can advise based on your specific situation — GLP Trackr is a tracking companion, not a substitute for that professional guidance.

Want a straightforward way to log every pen, every dose, and every injection date? Download GLP Trackr on the App Store or Google Play and explore it free for your first 7 days.