Health on the road

Traveling with medicines: what to pack and what to check

Medicines need a little planning on an international trip. Keep them with you, keep them labeled, and check that they are allowed where you are going.

General information only, not medical advice. Talk to a doctor or travel clinic about your own health before you travel.

Pack them in your carry-on

Keep medicines in your carry-on bag so they are with you if a checked bag is lost or delayed. Bring enough for the whole trip, plus a few extra days in case of delays.

Keep them in their original containers

Officials at some borders want medicines in their original labeled containers. The label should show your name, the medicine's name and the dose.

Carry paperwork

A copy of each prescription, ideally listing the generic name, since brand names differ between countries.
For controlled medicines, such as strong painkillers or some ADHD medicines, and for injectables like insulin or an epinephrine pen: a letter from your doctor on letterhead explaining what you take and why.
Leave a copy of your prescriptions with someone at home.

Check the rules where you're going

Some medicines that are common at home are restricted or banned in other countries, or are allowed only in limited amounts. Check with the embassy of each country you will visit or pass through. If a medicine is not allowed, ask your doctor about alternatives before you travel.

At US airport security

Liquid medicines are allowed in carry-on in reasonable amounts, even above the 3.4-ounce limit. Tell the officer before screening.

Time zones

If you take medicines at set times, such as insulin, ask your doctor how to adjust them when you cross time zones.

Handy tools

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Sources

Rules, fees and processing times change. Check the official sources above before you travel. Last checked October 2026.