Travelling with GLP-1: Storage and TSA Tips

Travelling with GLP-1 medication raises practical questions that do not always have obvious answers, where to store the pen on a long flight, what to do with your dose when you cross time zones, and what happens if your bag gets left in a hot car.

Here is a clear guide to everything you need to know.

Storage at home

Unopened pens (all GLP-1 drugs)

• Store in the refrigerator at 2°C–8°C (36°F–46°F)
• Do not store near the freezer compartment, accidental freezing ruins the medication
• Keep away from direct light
• Never freeze, frozen GLP-1 pens cannot be used and should be discarded

In-use pens (after first injection)

Once a pen has been used for the first time, it can be kept at room temperature. Temperature limits vary by drug:

After the maximum room temperature period, discard the pen even if medication remains.

Flying with GLP-1 medication

In hand luggage vs checked luggage

Always carry medication in your hand luggage. Checked baggage hold temperatures are not controlled, they can drop well below freezing on long flights, which would destroy your pen. Carry-on baggage stays in a climate-controlled cabin.

TSA (US) rules

GLP-1 injection pens are medically necessary medications and are exempt from the standard 100 ml liquid rule in hand luggage.

• You do not need a TSA-specific form
• Carry the original prescription label on the box or pen
• Declare the medication at security screening ("I have injectable medication in my bag")
• Ice packs or cooling pouches used to keep medication cold may also need to be declared

International travel

Rules vary by country. In most countries, carrying prescription medication with documentation is permitted. The safest approach:

• Carry a letter from your prescribing doctor stating the medication, dose, and that it is medically required
• Carry the original pharmacy packaging with your name on it
• Research specific customs requirements if travelling to countries with strict medication rules

Keeping medication cool while travelling

If you have an opened pen and are travelling in hot weather, or transporting an unopened pen without guaranteed refrigeration:

Frio cooling wallets

These fabric wallets contain crystals that activate when soaked in water. They keep medication at 18–26°C for 45+ hours, no refrigeration or power required. Compact, TSA-friendly, and widely available.

Small travel coolers (with ice packs)

For longer trips, a dedicated small medication cooler with a reusable ice pack works well. Make sure the pen does not touch ice directly, direct contact can cause localised freezing.

Hotel refrigerators

Most hotel rooms have small refrigerators. Ask at the front desk if yours does not, hotels often have secure refrigeration available for guests with medical needs.

What to do if your pen gets too warm

If you suspect your pen has been stored above 30°C (86°F) for more than a short period:

1. Do not use it
2. Check the prescribing information for your specific drug
3. Contact your pharmacy, they may be able to advise whether the pen is still usable based on how long and how warm it got
4. When in doubt, get a replacement pen rather than risk an ineffective or degraded dose

Signs a pen may be compromised: cloudiness in a normally clear solution, particles, or unusual colour.

Managing your injection schedule across time zones

For weekly injections, the exact time of day matters less than the day of the week.

If you cross multiple time zones:

• Keep your injection day consistent (e.g., always Wednesday) rather than trying to maintain a specific clock time
• Shift gradually if needed, a day earlier or later over a travel week is fine
• Never shorten the interval below 5 days between doses to avoid excessive side effects

For daily oral medications (Wegovy pill, Rybelsus), take at your usual local time at your destination. The morning-fasting requirement for these tablets applies regardless of time zone.

What to do if you miss a dose

Weekly injections (Ozempic, Wegovy, Mounjaro, Zepbound)

• If less than 5 days have passed: take the missed dose as soon as you remember
• If more than 5 days have passed: skip the missed dose and resume on your next scheduled day
• Do not take two doses to make up for a missed one

Daily oral medications (Wegovy pill, Rybelsus)

• If you remember the same morning: take it as usual (still on empty stomach)
• If it is later in the day and you have eaten: skip that day's dose and take the next one as normal the following morning

Tracking doses while travelling

Travel disrupts routines, and disrupted routines lead to missed or late doses. Logging your injection as soon as you take it, even just a note on your phone, keeps your dose history accurate and helps you avoid accidentally doubling up after a busy travel day.

Final takeaway

Store unopened GLP-1 pens in the refrigerator. In-use pens can be kept at room temperature for 21–56 days depending on the drug, no refrigeration needed mid-trip. Always carry in hand luggage, declare at security, and bring the prescription label. In hot conditions, a Frio wallet provides simple, power-free cooling. For missed doses on travel days, wait for your next scheduled day rather than doubling up.

Related Articles

• GLP-1 Drugs Before Surgery: What You Need to Stop and When
• Track Your GLP-1 Dose Cycle
• Long-Term Safety of Semaglutide: What the Evidence Shows

Consult your healthcare provider or pharmacist with any specific questions about your medication and travel plans.

Sources

• Ozempic prescribing information: https://www.accessdata.fda.gov/drugsatfda_docs/label/2025/209637s025lbl.pdf
• Wegovy prescribing information: https://www.accessdata.fda.gov/drugsatfda_docs/label/2024/215256s011lbl.pdf
• MedlinePlus — semaglutide: https://medlineplus.gov/druginfo/meds/a618008.html
• STEP 1 semaglutide trial — PubMed: https://pubmed.ncbi.nlm.nih.gov/33567185/