How Do You Store Wegovy: Essential Storage Guidelines

How do you store Wegovy correctly? As a biological medicine, Wegovy (semaglutide) requires careful storage to maintain its stability and effectiveness. Unused pens must be refrigerated at 2°C to 8°C in their original carton, away from light and freezing temperatures. Once opened, the pen can be kept refrigerated or at room temperature below 30°C for up to six weeks from first use. Whether at home or travelling, following the correct storage guidelines is essential to ensure your treatment works as intended.

How to Store Wegovy Correctly

Wegovy pens must be refrigerated at 2°C to 8°C before first use and, once opened, can be stored refrigerated or below 30°C for up to six weeks from first use. Never freeze the pen, as this permanently damages the medication.

Wegovy (semaglutide) is a glucagon-like peptide-1 (GLP-1) receptor agonist prescribed for weight management in adults with obesity or overweight with weight-related health conditions.^[4][5] As a biological medicine, proper storage is essential to maintain its stability, efficacy, and safety.

Wegovy pens must be stored in a refrigerator at temperatures between 2°C and 8°C before first use.^[1][2] The pens should be kept in their original carton to protect them from light.^[1][2] Never freeze Wegovy, if a pen has been frozen, it must be discarded, even if it has subsequently thawed.^[1][2] Freezing can damage the peptide structure, rendering the medication ineffective and potentially unsafe.

The UK Wegovy FlexTouch pen is a multi-dose, dial-a-dose device containing four weekly doses. It is not a single-use pen. Once you have used your first dose, the pen can be kept for up to 6 weeks from the date of first use, stored either in the refrigerator (2°C to 8°C) or at room temperature below 30°C. After 6 weeks from first use, the pen must be discarded regardless of how many doses remain. It is helpful to write the date of first use on the carton so you can track this.

After each injection, remove the needle from the pen, replace the pen cap, and store the pen appropriately until your next weekly dose. Dispose of used needles immediately in a sharps bin. Do not store the pen with a needle attached.

Always store Wegovy pens away from the freezer compartment and avoid placing them near cooling elements where they might accidentally freeze. Keep the medication out of reach of children. If you are uncertain whether your Wegovy pen has been stored correctly, consult your pharmacist or healthcare professional before use.

Refrigeration Requirements for Wegovy Pens

Store Wegovy on a middle or lower fridge shelf at 2°C to 8°C, away from door compartments and cooling elements to avoid temperature fluctuations or accidental freezing. Keep pens in their original carton to protect from light.

Maintaining appropriate refrigeration is critical for preserving the integrity of Wegovy. The recommended storage temperature range of 2°C to 8°C corresponds to standard domestic refrigerator settings. This temperature range ensures the semaglutide peptide remains stable and retains its pharmacological activity.

When storing Wegovy in your refrigerator, place the pens in the main body of the fridge, typically on a middle or lower shelf, rather than in the door compartments. Door storage exposes medications to greater temperature fluctuations each time the refrigerator is opened, which may compromise stability. Similarly, avoid positioning pens at the very back of the fridge where they might come into contact with cooling elements and risk freezing.

Key refrigeration guidelines include:

• Store unused pens in the original carton to protect from light

• Maintain consistent temperatures between 2°C and 8°C

• Never place pens in the freezer or freezer compartment

• Avoid storing near cooling vents or elements

• Keep away from food items that might leak or contaminate the packaging

• After first use, remove the needle, replace the pen cap, and return the pen to the fridge or store below 30°C

If you share refrigerator space with others, clearly label your Wegovy pen and let household members know about the importance of proper storage. Some patients find it helpful to designate a specific area of the refrigerator exclusively for medications.

If you experience a power cut or refrigerator malfunction, check the internal temperature as soon as possible. For an in-use pen, the 6-week limit runs from the date of first use regardless of whether the pen is stored refrigerated or at room temperature below 30°C during that period. If the temperature has exceeded 30°C at any point, the pen should be discarded.

What Happens If Wegovy Is Not Stored Properly

Improper storage, including freezing or exposure above 30°C, can degrade the semaglutide peptide, reducing potency or rendering the medication ineffective. Discard any pen that has been frozen, overheated, or shows cloudiness or visible particles.

Improper storage of Wegovy can compromise the medication's effectiveness and safety. Semaglutide is a peptide-based biological medicine, and its structure is sensitive to temperature extremes, light exposure, and physical stress.

Exposure to excessive heat (above 30°C) can cause peptide degradation, potentially reducing the medication's potency.^[1][2] If an unused Wegovy pen has been kept at temperatures above 30°C, or has been out of the refrigerator for longer than 6 weeks before first use, the medication should be discarded. Using improperly stored semaglutide may result in reduced weight loss efficacy.

Freezing is particularly problematic for Wegovy. When the solution freezes, ice crystals can irreversibly damage the peptide structure. Even after thawing, frozen Wegovy will not function as intended and must not be used. Visual inspection may not always reveal this damage, so any pen suspected of freezing should be discarded as a precautionary measure.

Signs that Wegovy may have been improperly stored include:

• Visible particles, cloudiness, or discolouration (the solution should be clear and colourless)

• Damaged or cracked pen casing

• Expired expiry date

Before each use, always check that the solution is clear and colourless without visible particles, and that the pen is not damaged. If the solution appears abnormal, do not use the pen; return it to your pharmacist for advice on disposal. If you have used a pen that may have been stored incorrectly and experience unexpected symptoms or lack of therapeutic effect, contact your GP or prescribing clinician. Your pharmacist can provide guidance on proper storage practices to prevent future issues.

Travelling with Wegovy: Storage Tips

When travelling, pack Wegovy in hand luggage using an insulated cooling wallet, keep it below 30°C, and avoid contact with ice packs to prevent freezing. Carry your prescription and check customs rules for injectable medicines at your destination.

Travelling with Wegovy requires advance planning to ensure the medication remains within the recommended storage conditions throughout your journey. Whether travelling domestically or internationally, maintaining appropriate temperature conditions is essential for medication integrity.

For short journeys, if you are using an in-use pen within the 6-week period and the temperature remains below 30°C, you can transport it at room temperature. However, avoid leaving pens in cars, where temperatures can rapidly exceed safe limits, particularly in summer months or direct sunlight. If you are out for the day, consider using an insulated medication travel case with a cool pack to maintain stable temperatures. Do not allow the pen to come into direct contact with ice packs or dry ice, as this risks freezing the solution.

For longer trips or air travel, a validated medication cooling wallet or case is advisable. These portable cooling solutions can maintain temperatures between 2°C and 8°C without freezing the medication. When flying, pack Wegovy in your hand luggage rather than checked baggage, as cargo holds can experience temperature extremes. Carry your prescription or a letter from your GP confirming your need for the medication, as airport security may require documentation for injectable medicines and cooling equipment.

Essential travel considerations:

• Remember that one Wegovy FlexTouch pen contains four weekly doses; plan the number of pens needed based on your trip duration (one pen covers up to four weeks of doses), plus spares for delays

• Bring sufficient sterile pen needles for each injection during your trip

• Carry a suitable sharps container for used needles; retain the pen itself for your subsequent weekly doses

• After each injection, remove the needle, replace the pen cap, and store the pen appropriately

• Research refrigeration availability at your destination (hotels, accommodation)

• For international travel, check customs regulations regarding importing prescription medicines

• Set phone reminders for injection times across time zones

• Keep medication in original packaging with pharmacy labels intact

If refrigeration is unavailable at your destination and you need to store pens beyond the 6-week in-use period, contact your healthcare professional before travelling to discuss alternatives. Never compromise on storage requirements, as this may render your treatment ineffective.

If you experience any suspected side effects from Wegovy, report them via the MHRA Yellow Card scheme (yellowcard.^[10]mhra.gov.uk).

Scientific References

1. Wegovy 0.25 mg, FlexTouch solution for injection in pre-filled pen – Summary of Product Characteristics.
2. Wegovy 2.4 mg, FlexTouch solution for injection in pre-filled pen – Summary of Product Characteristics.
3. Wegovy – EPAR Product Information.
4. Wegovy – European Medicines Agency medicine page.
5. Semaglutide for managing overweight and obesity (TA875).
6. Semaglutide – British National Formulary.
7. Semaglutide: a medicine to manage type 2 diabetes or treat obesity.
8. MHRA approves GLP-1 receptor agonist semaglutide to reduce risk of serious heart problems in obese or overweight adults.
9. Package Leaflet: Information for the Patient – Wegovy FlexTouch.
10. GLP-1 receptor agonists: reminder of the potential side effects and to be aware of the potential for misuse.
11. Influence of Buffering Capacity, pH, and Temperature on the Stability of Semaglutide.

Frequently Asked Questions