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How do you travel with medicines and supplements?

Plan the journey around airport screening, product storage and the laws at each border.

Readability reviewed 6 Nov 2026

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The answer so far

Many travellers carry medicines, but there is no single rule for every journey. Check the exact product and its storage instructions, the departure airport and airline, and the laws at the destination and any transit point. A prescription or a successful security screening at home does not by itself establish permission to import a product elsewhere.12

Follow this question
How do you travel with medicines and supplements? Choose a step to explore this subject in more detail.
  1. 1Four separate questions
  2. 2Prepare before departure
  3. 3Storage and interruptions
  4. 4Crossing time zones

Four separate questions

Ask what the product is and how it must be stored; what the departure airport permits through screening; what the airline permits on board; and what the relevant authorities allow you to carry into or through each country. These questions may have different answers. Start with airport security or border requirements.12

Prepare before departure

Keep the original labelled container and check whether the destination and any transit country require documentation or permission for the specific substance and amount. CDC advises travellers to check with the relevant embassies; it also recommends carrying medicines in hand luggage in case checked baggage is lost or delayed. Rules and individual travel arrangements can differ. If you have a chronic condition, the US CDC suggests planning a travel-health consultation 4–6 weeks before departure, when possible. Ask about a supply for delays and where to seek care at your destination, while checking the quantities each country permits. If your trip is sooner, seek advice as soon as you can.135

Storage and interruptions

A product that needs a particular temperature must stay within its own labelled conditions during the whole journey, including waiting and delays. Our cold-medicine travel guide explains the questions to ask; it cannot validate an individual cooler or product.41

Crossing time zones

Before leaving, tell the prescribing team your itinerary, departure and arrival times, and the medicines you take. Ask for a written plan for the outward journey, delays and return, including what to do if a dose is missed. The time between doses may matter, but the right schedule depends on the medicine and the person; do not move, skip or double doses based on a generic travel rule. An alarm can help you follow the plan agreed with your care team.15

If medicine is lost, damaged or not permitted

Before a trip, ask your care team how to obtain help or a replacement if a medicine is lost or damaged. Keep a copy of the prescription and a list of generic and brand names, strengths and prescribing contacts separate from the medicine, while checking each country’s quantity and documentation rules. If a problem occurs, contact the prescriber or a local pharmacist or clinician promptly; a replacement may require a local prescription, and the same brand or formulation may not be available. If symptoms are severe or treatment is urgently needed, seek local urgent medical care. If a medicine is prohibited at the destination, discuss alternatives with the care team before travelling rather than assuming it can be brought in.15

What to have ready before travelling

Note the exact product and active ingredient, presentation, quantity and labelled storage instructions; list departure, transit and destination countries and dates. Keep the original packaging and relevant prescription documents, and check current requirements with the airport, airline and competent authorities for each place. A pharmacist or prescriber can help plan product-specific storage and schedule questions. Continue to airport security, cooling or border rules.

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  1. Traveling Abroad with MedicineU.S. Centers for Disease Control and Prevention · Public health travel guidanceAccess checked 2026-11-04 · US travel-health advice; destination and transit laws require direct confirmation.
  2. Hand luggage restrictions: Medicines, medical equipment and dietary requirementsUK Department for Transport / GOV.UK · Government airport security guidanceAccess checked 2026-11-04 · UK airport security guidance, not a destination customs or foreign medicines-law determination.
  3. Traveling with Prohibited or Restricted MedicationsU.S. Centers for Disease Control and Prevention · Travel medicine referenceAccess checked 2026-11-04 · Source date: 2025-04-23 · General travel medicine guidance, not definitive legal advice for a specific journey.
  4. Safe Drug Use After a Natural DisasterU.S. Food and Drug Administration · Regulator emergency guidanceAccess checked 2026-11-04 · Addresses medicine exposure during disasters; it does not establish a universal safe excursion time.
  5. Travelers with Chronic IllnessesU.S. Centers for Disease Control and Prevention · Public-health travel medicine guidanceAccess checked 2026-11-04 · Source date: 2026-05-19 · CDC Yellow Book chapter for health professionals, dated 19 May 2026; planning advice does not replace an individual medicine schedule or destination law.
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