Travelling with a long-term condition: checklist

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This is a summary of one public-health chapter, not medical advice. It works for any long-term condition, so it names no drugs and gives no doses or dose timing. Your own clinician decides what is right for you.

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Medicines and supplies

Carry all medications in hand luggage, not in checked baggage.
Bring all necessary medications and medical supplies in their original containers.
Have medications for the whole trip plus extra in case of unexpected delays.
If you cross time zones, talk to your clinician about when to take your medications. We do not give timing advice.

Papers

Get a letter from your healthcare professional on office letterhead that outlines your existing medical conditions.
Keep health information digitally (records, medications, test results such as an ECG), for example in a travel health app.
Buy a medical alert bracelet or plan to carry medical information on your person.
Some countries do not allow visitors to bring certain medications in. Check with the destination's embassy or consulate in your country.

Insurance and emergencies

Look for insurance with a 24/7 assistance phone line and emergency medical evacuation cover.
Identify healthcare professionals and pharmacies at your destination before you leave.
Enrol in your government's traveller alerts (the page names the US Smart Traveler Enrollment Program).

Airline, cruise and airport

Contact the airline or cruise line well in advance if you need special assistance. Some carriers require approval for carry-on medical devices.
Airlines and cruise lines may refuse service to passengers with chronic illnesses if they consider them unfit to travel.
Arrange oxygen on the ground yourself and do not bring your own oxygen onboard. Check whether the flight provides in-flight oxygen.
Ask the airport's security-assistance service how to prepare for screening, and tell security staff about any implanted device such as a pacemaker or defibrillator before screening.

Timing

Book a pre-travel consultation at least 4 to 6 weeks before departure.
On long flights or drives stay hydrated, wear loose clothing and move regularly.

Source: cdc.gov Yellow Book, travelers with chronic illnesses · Checked 2026-10-24 · Yellow Book Edition 2026, dated May 19, 2026 on the page. For what each country allows, see Travelling with medicines. Ticks are saved on this device only.