How should I store, handle, and manage my injection pen to keep it safe and effective, including after delivery and outside the fridge?
Essential guidance on refrigeration, room temperature limits, and safe handling of your medication
Storage, Handling, and Cold Chain Guidance for Injection Pens
How to safely store, handle, and use your medication to ensure effectiveness
Proper storage and handling of your injection pen—such as Mounjaro and Wegovy—is essential to maintain its safety, effectiveness, and overall treatment success. This guide combines everything you need to know, from cold chain delivery to day-to-day storage at home.
Why proper storage matters
These medications are temperature-sensitive and must be stored correctly to:
- Maintain effectiveness
- Protect the active ingredients
- Ensure safe and reliable treatment outcomes
Improper storage may reduce effectiveness or make the medication unsuitable for use.
Refrigerated storage (recommended)
The best way to store your medication is in the fridge:
- Keep between 2°C and 8°C (36°F to 46°F)
- Store in the main body of the fridge (not the door or freezer)
- Avoid temperature fluctuations
✔ Refrigeration preserves the medication until you are ready to use it.
Do not freeze
- ❌ Never freeze your medication
- ❌ Do not use it if it has been frozen
Freezing can permanently damage the medication and make it ineffective.
Understanding cold chain delivery
Your medication is delivered using a cold chain system, which is a temperature-controlled process designed to keep it stable during transit.
- Packaging maintains the correct temperature for up to 48 hours
- During this time, your medication remains fully protected and stable
After this period:
- The cold chain is considered broken
- However, the medication is still safe to use if handled correctly
How long can medication stay out of the fridge?
Once the cold chain is broken or the medication is removed from refrigeration:
- Mounjaro: Safe for up to 30 days at room temperature
- Wegovy: Safe for up to 42 days (6 weeks) at room temperature
👉 It is recommended to begin using your medication as soon as possible after delivery.
Room temperature storage (short-term use)
If refrigeration is not possible:
- Keep below 30°C (86°F)
- Store away from heat, sunlight, and humidity
- Use within the allowed timeframe:
- Mounjaro: 30 days
- Wegovy: 42 days
❗ After this period, the pen should be discarded, even if medication remains.
Storage after delivery and first use
Once you receive your medication:
- Store it in the fridge as soon as possible, or
- Begin use following room temperature guidelines
After first use:
- Mounjaro: Use within 30 days
- Wegovy: Use within 6 weeks (42 days)
✔ You may continue refrigerating the pen (if preferred) until expiry, as long as usage limits are respected.
Keeping your medication protected
To ensure maximum safety:
- Store in the original packaging to protect from light
- Keep in a cool, dry place
- Avoid exposure to extreme temperatures or humidity
Safe handling tips
- Do not shake the pen
- Always check the expiration date before use
- Keep out of reach of children
Summary
Maintaining the correct storage conditions for your injection pen is essential for safe and effective treatment. While cold chain delivery ensures your medication arrives in optimal condition, proper storage at home—whether refrigerated or at room temperature—ensures it continues to perform as intended. Always monitor storage timeframes and handle your medication with care.
| Medication | Cold Chain Duration | Safe at Room Temperature | Expiration If Refrigerated |
|---|---|---|---|
| Mounjaro | Up to 48 hours | 30 days | Until expiry date |
| Wegovy | Up to 50 hours | 42 days (6 weeks) | Until expiry date |
If you are ever unsure whether your medication is still safe to use or have questions about storage, please contact us at info@rightangled.com. Your safety is our priority.