CGRP Migraine Biologics Abroad: Cold Chain, Missed Doses and Countries That Don't Stock Them

Your CGRP biologic won't survive a 40°C car boot, and in dozens of countries it isn't available at any price. Here's how to travel without losing a dose.

CGRP migraine biologics abroad: what you need to know

The single biggest travel risk for people on subcutaneous CGRP biologics isn't customs — it's temperature. Erenumab (Aimovig), fremanezumab (Ajovy), and galcanezumab (Emgality) are self-injected refrigerated medications that must be stored at 2°C to 8°C^[1]. Eptinezumab (Vyepti) is different: it is administered as a 30-minute IV infusion every 12 weeks in a clinic, so the cold-chain risk for Vyepti travellers falls on the receiving infusion centre, not the bag in transit. Room-temperature excursion windows differ between the three injectable products — verify your own product’s patient information leaflet rather than relying on a single blanket figure.This guide covers CGRP monoclonal antibodies for migraine prevention. For insulin and refrigerated medication generally see our insulin and cold-chain guide, IBD biologics guide, and biologic asthma medication guide.

Medical disclaimer: This article is for informational purposes only and does not constitute medical advice. Regulations, drug availability, and storage requirements can change. Consult your neurologist or prescribing clinician before travelling with any biologic medication.

The cold-chain problem in practice

Manufacturer guidance varies. Aimovig (erenumab) and Emgality (galcanezumab) both specify up to 7 days at room temperature^[1] (Emgality up to 30°C, Aimovig up to 25°C). Ajovy (fremanezumab) prescribing information does not currently support an extended room-temperature excursion window beyond the 30-minute equilibration before injection — confirm the latest guidance with your prescriber. None of these windows are generous once you factor in a checked bag on a tarmac, a hotel room without a minibar fridge, or a three-day island-hopping trip with no refrigeration.

The practical rules are straightforward. Carry the pen or prefilled syringe in your carry-on, never in checked luggage. Use a dedicated medical cooler with a temperature log. Gel ice packs from hotel freezers cool unevenly and can freeze the medication if it rests against them directly.

On arrival, ask your accommodation to store the medication in a standard food-safe fridge, not a freezer compartment. Freezing destroys the biologic structure even if the pen looks undamaged.

Dosing schedules don't pause for time zones

Erenumab (Aimovig) and galcanezumab (Emgality) are monthly subcutaneous injections. Fremanezumab (Ajovy) offers both monthly and quarterly subcutaneous options — the quarterly schedule has a real advantage for long trips. Eptinezumab (Vyepti) is administered only as a 30-minute IV infusion every 12 weeks at an infusion centre, hospital outpatient department, or doctor’s office; if your next Vyepti infusion falls during a trip, you need to identify and coordinate with a destination infusion centre at least six to eight weeks before departure, similar to scheduling infliximab abroad.

A missed monthly dose by five to seven days is unlikely to result in a full migraine rebound for most people, but you should not delay by more than two weeks. If your injection date falls mid-trip, plan for it before departure.

If you use triptans as rescue medication alongside your biologic, check the entry rules for your destination separately. Several countries that allow CGRP biologics still classify certain triptans as controlled substances and require documentation.

Where CGRP biologics are not approved or not available

CGRP monoclonal antibodies are approved in the United States, the European Union, the United Kingdom, Australia, Japan, Canada, and several Gulf Cooperation Council states. Beyond those markets, regulatory approval is absent or pending across most of sub-Saharan Africa, Central Asia, and much of Southeast Asia^[3]. Approval does not guarantee supply: galcanezumab was approved in several Middle Eastern markets but has experienced intermittent stock shortages.

In countries without approval, pharmacies cannot legally dispense these medications, and infusion centres cannot administer eptinezumab. Private import through a licensed importer is theoretically possible but slow, expensive, and unreliable as an emergency fallback.

The practical implication: carry your full supply for the entire trip. Do not plan on sourcing a replacement dose locally in Vietnam, Morocco, Nepal, or most of Latin America outside Argentina and Brazil.

Import rules and documentation

CGRP antibodies are not controlled substances in any jurisdiction reviewed at publication. Most countries permit personal-use import with a prescription or a doctor's letter and up to a 90-day supply^[4]. Japan limits most medications to a one-month personal import allowance; biologics fall under the Yunyu Kakunin-sho process if the quantity exceeds that threshold.

Your documentation pack should include the original manufacturer packaging with the batch number visible, a prescription in the traveller's name, and a brief letter on headed paper from your neurologist or prescribing clinician.

The letter should state the generic name (erenumab, fremanezumab, galcanezumab, or eptinezumab), the dose, the frequency, and that cold storage is required. This matters at customs inspection, where officers may not recognise the brand name.

Getting through airport security with a biologic

The US TSA and EU aviation security regulations both permit medically necessary liquids and biologics in carry-on baggage above the 100 ml limit^[5], provided they are declared separately at the security checkpoint and supported by documentation. The pre-filled syringes in CGRP auto-injectors are typically 1 ml, well within the range accepted without challenge. (IATA does not set aviation security rules for passenger-carried medication; the relevant authorities are national.)

At security, declare the medication verbally before the belt. Place the cooler bag separately for X-ray. X-ray screening does not damage biologics, but if an officer offers a manual inspection instead, accept it.

Insurance and what it won't cover

Standard travel insurance policies treat CGRP biologics as a pre-existing condition medication. Routine resupply or replacement doses are excluded from most standard travel policies^[6]. Emergency care for a severe migraine attack, including intravenous treatment at an emergency department, may be covered, but the biologic itself usually is not.

If your medication is lost or damaged in transit and you are in a country where it is approved, you may be able to obtain a private prescription and purchase a replacement. A single monthly dose of erenumab retails at approximately €600 to €800 (~$705 to $940) in the EU without insurance. A Vyepti infusion is billed differently — the medication plus facility administration fee typically totals several thousand euros for a single quarterly infusion. In the UAE, private purchase of subcutaneous CGRP biologics is possible at comparable cost.

If you are travelling to a country where the biologic is not approved, there is no local resupply option at any price. Build in a buffer: carry one extra dose beyond your travel duration.

Your medical record as a travel document

Emergency clinicians in countries unfamiliar with CGRP biologics need to know what you are on before they treat a severe attack. A paper prescription in the original language may be illegible or uninformative to a local neurologist.

Storing your migraine history, current biologic, dose schedule, and rescue medication in a Nomedic International Patient Summary gives any treating clinician a structured, machine-readable record they can act on immediately. Include your diagnosis date, your last injection date, and your neurologist's contact details.

Pre-departure checklist for CGRP travellers

Confirm approval status. Check whether your specific biologic is approved in your destination country before departure, not at the airport.

Carry the full course plus one extra dose. Do not plan on local resupply in unapproved markets.

Pack a validated medical cooler. Gel packs alone are not sufficient for multi-day travel in hot climates.

Carry a neurologist's letter listing the generic name, dose, and cold-storage requirement.

Schedule your injection date before or after the busiest travel days. Avoid injecting on a long-haul travel day when hydration and stress are harder to control.

Update your International Patient Summary before departure with your current dose, last injection date, and rescue plan.

Frequently asked questions

Can I bring my CGRP biologic in carry-on luggage?

Yes. IATA guidance permits medically necessary biologics in carry-on bags above the standard liquid limit when declared at security with supporting documentation. Keep the medication in its original packaging with your prescription accessible.

What happens if my CGRP biologic gets too warm during travel?

Most manufacturers state the medication can be kept at up to 25°C for a maximum of seven days before it should be discarded. Once that window is exceeded, the medication should not be used, even if it looks unchanged. Replace it only if you are in a country where the product is approved and available.

Which countries don't have CGRP biologics approved?

Most of sub-Saharan Africa, Central and South-East Asia, and much of Latin America outside Argentina and Brazil lack regulatory approval for one or more CGRP antibodies. Approval status changes; verify with your neurologist or the manufacturer's medical affairs team before departure.

Can I delay a CGRP injection or infusion during travel?

A subcutaneous CGRP injection (erenumab, fremanezumab, galcanezumab) can usually be shifted by a few days in either direction without losing efficacy — confirm the window with your neurologist. Eptinezumab (Vyepti) is given as a quarterly IV infusion and the date is harder to shift without coordinating with an infusion centre. Plan ahead and never skip a dose entirely without prescriber guidance.

Will travel insurance cover a replacement CGRP dose if mine is lost or damaged?

Most standard travel policies exclude routine medication replacement for pre-existing conditions. Emergency hospital treatment for a severe migraine attack may be covered. Check your policy's exclusion wording before departure and consider specialist medical travel cover if your trip is long.

Do I need a special import permit for CGRP biologics?

CGRP antibodies are not controlled substances, so no narcotic import permit is required. A prescription in your name and a neurologist's letter covering the generic drug name and dose are sufficient for personal import in most approved markets. Japan applies stricter quantity limits for personal import and may require additional documentation beyond one month's supply.