Proper storage is essential for Mounjaro to remain effective. If you're travelling or need to transport your medication, here's what you need to know.
Storage Requirements
Before First Use
- Store in the refrigerator at 2-8°C
- Keep in original packaging to protect from light
- Do not freeze
- Do not use if it has been frozen
After First Use
- Can be kept at room temperature (up to 30°C) for up to 21 days
- Or continue storing in the refrigerator
- Discard after 21 days at room temperature, even if medication remains
What to Avoid
- Freezing: Never freeze Mounjaro. If frozen, discard it.
- Extreme heat: Don't leave in a hot car or direct sunlight
- Leaving out too long: Track how many days since first use
Travelling with Mounjaro
Short Trips (Under 21 Days)
For trips under 21 days in moderate climates:
- A pen already in use can travel at room temperature
- Keep away from extreme temperatures
- A small insulated pouch provides extra protection
Longer Trips or Hot Climates
For extended travel or destinations above 30°C:
- Use a medical cooling case or travel cooler
- Cooling wallets with gel packs work well
- Ensure gel packs don't directly touch the pen (to avoid freezing)
Flying with Mounjaro
Carry-On vs Checked Luggage
Always pack Mounjaro in your carry-on luggage, not checked bags:
- Cargo holds can freeze, damaging the medication
- If bags are lost, you'll still have your medication
- Security screening rarely causes issues with medications
Security Screening Tips
- Medications are permitted through security
- Keep in original packaging with your name visible
- Declare it if asked, but usually no questions are raised
- Cooling packs for medication are generally permitted
Consider a Doctor's Letter
For international travel, having a letter from your prescriber can be helpful. It should state:
- Your name
- The medication name and dose
- That it's medically necessary
- Your doctor's contact details
Timing Injections While Travelling
Time Zone Changes
Mounjaro is dosed weekly, so minor timing variations are fine:
- Take it on the same day each week, even if the exact time varies
- If crossing many time zones, aim for your usual injection day in either time zone
- A few hours' difference doesn't matter
Planning Around Travel
Consider timing your injection to avoid:
- Long flight days (nausea can be worse with travel)
- Days with important activities where side effects would be inconvenient
Disposal While Travelling
- Used pens should go in a sharps container
- Travel sharps containers are available from pharmacies
- If no sharps container is available, use a hard plastic container with a secure lid
- Never dispose of in regular rubbish bins in public spaces
What If Your Medication Gets Too Hot or Cold?
If you suspect temperature damage:
- Check for any visible changes (cloudiness, particles, colour change)
- When in doubt, discard and use a new pen
- Contact your pharmacy or prescriber for advice
Planning Ahead
Before travelling:
- Ensure you have enough medication for the trip plus a buffer
- Research pharmacy access at your destination (in case of emergency)
- Consider travel insurance that covers medications