Semaglutide injection storage: the complete guide for Wegovy users

You've just received your pen, what now?

The parcel has arrived, the pens are cold, and you are probably relieved but also slightly anxious about getting the storage right. That is completely understandable. The DPD tracked delivery is temperature-managed, but once you open the box, storage becomes your responsibility.

Place the pens straight into the fridge. The target is 2°C to 8°C, the same range used for most other injectable medicines. A shelf in the main body of the fridge is ideal. Avoid the door, where temperatures fluctuate every time you reach for the milk, and keep pens well away from the freezer compartment. Freezing destroys the medicine. If a pen has accidentally frozen, do not use it; contact your pharmacist for advice.

Leave each pen in its original cardboard packaging until you are ready to inject. The box protects the pen from light, which can degrade the solution over time. Keep them together in one place so you always know what you have left. If you want more detail on the specific temperature rules and what to do if the fridge fails, our semaglutide storage temperatures page covers those scenarios in full.

Taking a pen out of the fridge before you inject

Cold medicine can sting. Most people find it more comfortable to let the pen sit at room temperature for a short while before injecting. That is fine, but there is a time limit, and it is not the same for every semaglutide product, so the number you need is in your own Patient Information Leaflet, not a general figure quoted online.

A few things to keep in mind when the pen is out of the fridge. First, keep it away from direct sunlight and heat: a windowsill or a hot car dashboard is not a safe resting place. Second, do not put it back in the fridge and then take it out again repeatedly, use the same out-of-fridge period continuously. Third, once the out-of-fridge limit has passed, the pen should not be used even if the solution looks normal. Dispose of it safely using a sharps container and contact your prescriber about your next steps.

If you are unsure whether your pen has been stored correctly (perhaps it was left out overnight by mistake) do not guess. Ring your pharmacy or prescriber before injecting.

Travel, power cuts, and other real-life complications

Semaglutide storage in everyday life is rarely as simple as a fridge and a calendar. People travel. Fridges break down. Luggage goes into overhead lockers.

When flying, carry your pens in hand luggage, not in the hold, where temperatures are uncontrolled. A well-insulated travel cooler (not an ice pack that touches the pen directly, as that can cause localised freezing) keeps temperatures stable for short journeys. For longer trips, a portable medical cooler is worth the investment. Airport security typically allows injectable medicines with a prescription label, carry a copy of your prescription or a letter from your prescriber to smooth things through.

If you lose power at home, move pens to a neighbour's fridge or use a cool bag with an ice pack (wrapped in a cloth, not touching the pen). The Wegovy fridge storage guide goes into more practical detail here. For the question many people ask, do you actually need to keep Wegovy in the fridge the whole time?, our page on whether Wegovy needs continuous refrigeration gives a straight answer.

If your pen has been exposed to temperatures outside the permitted range, treat it as compromised and speak to your pharmacist before using it. The cost of a replacement pen is lower than the risk of an ineffective injection or, worse, a damaged medicine causing an adverse reaction. Further general guidance on keeping your injection pen in good condition sits on the how to store a semaglutide injection page.

Disposal and what to check on delivery

Used needles and spent pens are clinical waste. Never put them in the household recycling or general bin. A purpose-made sharps container is the right solution, it seals securely, and your local council or GP surgery can advise on collection. Fresh needles for each injection matter too: blunted or contaminated needles raise the risk of injection-site reactions and make the injection more uncomfortable. You can read more about the injection process itself on our semaglutide injection guide.

When a new delivery arrives, check a few things before putting the pens away. Inspect the solution through the viewing window: it should be clear and colourless. Any cloudiness, particles, or discolouration means the pen should not be used. Check the expiry date printed on the label. Confirm the pen has not been damaged in transit. If anything looks wrong, contact us, our aftercare team is available seven days a week.

The broader picture of how Wegovy works and what treatment involves is on our Wegovy overview page. And if you are still thinking through whether treatment is the right step, our weight-loss treatment overview sets out the options clearly without any pressure.