Does Wegovy need to be stored in the fridge?

The decision most people are really making: fridge or room temperature?

If you have found yourself reading about Wegovy storage, there is a good chance something has disrupted your usual routine, a weekend away, a hotel stay, a fridge that briefly stopped working, or simply the question of where to put the pen on injection day. That is a genuinely common situation, and it deserves a straight answer.

Under its licence, Wegovy must be kept at 2°C to 8°C, standard household fridge temperature. This preserves the integrity of the semaglutide protein. Freezing is different: ice crystals can damage the medicine's structure, and a pen that has been frozen should not be used. Keep the pen away from the back wall of the fridge, where temperatures can dip below 2°C. If you want a dedicated answer to whether Wegovy has to be stored in the fridge, that page covers the requirement in full alongside the exceptions the leaflet permits. The NHS medicines page for semaglutide confirms this refrigerated storage requirement.

Room-temperature storage is permitted for a defined window, as described in the Wegovy Patient Information Leaflet, the leaflet specifies the exact number of days and the maximum temperature. That window is what to consult if your circumstances change. No general article, including this one, should be treated as the definitive figure, because storage conditions are set by the manufacturer and regulator. Once that window has passed, the pen should be discarded safely. If you are unsure whether your pen is still viable, your pharmacist is the right first call.

One practical point worth knowing: storing Wegovy in the fridge consistently, from the moment it arrives to the moment you inject, is the simplest way to avoid having to count days at all.

How to store Wegovy correctly at home, and the details that trip people up

The mechanics are straightforward. Your pen lives in the fridge door or on a shelf where the temperature stays steady. It does not go in the freezer compartment, and it does not go in a bag in the car if it is a warm day. Before you inject, it is fine to let it sit at room temperature for a few minutes (many people find a slightly warmer pen more comfortable to inject) but that brief warm-up does not count as the start of the room-temperature storage window; the clock on that runs from when you first remove it from the fridge for storage rather than for immediate use.

Injection site and technique matter alongside storage. Clean the skin with an alcohol swab before injecting; Wegovy can be administered in the abdomen, thigh or upper arm. If you are new to the upper arm site, our guide to upper arm injections covers the practical steps.

On the question of storing Wegovy out of the fridge: the answer is yes, temporarily, within the boundaries the leaflet describes. Beyond those boundaries, discard and replace. It is also worth reading the fuller detail on how Wegovy is stored if you want the complete picture on packaging, travel, and disposal.

Used pens contain a needle, dispose of them in a sharps container, never in household waste.

When storage goes wrong: what to do and what to watch for

Semaglutide is a protein-based medicine. Proteins degrade when exposed to heat, freezing temperatures, or prolonged light. If a pen has been left in direct sun, frozen accidentally, or kept at room temperature for longer than the leaflet permits, the medicine may no longer work as expected, the pen may look unchanged, but that does not mean it is fine.

Signs that something may be off with a pen: the solution looks cloudy, discoloured, or contains visible particles. Clear and colourless is what you should see. If in doubt, do not inject. Contact your prescriber or pharmacist, and if you received the pen from an online pharmacy, contact them directly.

Report any suspected product quality issue (including concerns related to storage) through the MHRA's Yellow Card scheme. That reporting system exists precisely so the regulator can track patterns, and it covers medicines as well as suspected counterfeit or substandard products.

If you are ever unsure whether your supply chain is legitimate (and this matters more than people realise) you can verify any online pharmacy on the GPhC pharmacy register. Pens sourced outside the licensed UK supply chain carry real risks beyond storage.

Wegovy at a glance: a prescription medicine with clinical oversight built in

Wegovy (semaglutide 2.4mg, and now also available in the 7.2mg dose following MHRA approval) is licensed in the UK for weight management in adults with a qualifying BMI, alongside a reduced-calorie diet and increased activity. It is a Black Triangle medicine, meaning the MHRA monitors it closely during its post-approval period. For a fuller picture of the treatment itself, our Wegovy overview covers licensing, how it works, and what to expect.

Storage is one part of using this medicine safely. The other part is ongoing clinical oversight: a prescriber should review your treatment before each supply, not simply repeat it indefinitely. If you have questions about whether Wegovy suits your circumstances, the right place to explore that is a consultation with a qualified prescriber, not a storage article. Start your free consultation with our clinical team, who review every case personally before any prescription is issued.