Business travel and time zones: how to organise your medication
How to prepare your medication for business trips, which documents to carry and how to adjust your doses across time zones without improvising.
In short
- Before each trip, check with your doctor or pharmacist which of your medicines are time sensitive and how to adjust them to the destination time zone.
- Carry all your medication in your hand luggage, with the prescription and a signed and stamped medical report in English, as the Spanish Ministry of Health recommends.
- If you take narcotic or psychotropic medicines, you need a certificate from the AEMPS, which takes at least ten days to process.
- Never take a double dose to "catch up" after a flight: if in doubt, check the leaflet or ask a pharmacist.
If you travel often for work, the key to staying on track with your medication is to plan ahead: carry your medicines in your hand luggage with their paperwork, know which ones depend heavily on timing, and have a plan, agreed with your doctor or pharmacist, for adjusting doses when you cross several time zones.
Meetings, hotels and work dinners break any routine; here is a practical system so that your treatment travels with you.
| What will you find in this article? |
What should you prepare before a business trip?
The most important thing is to take enough medication for the whole trip, plus a margin in case of delays, and the paperwork that shows it is yours. The Spanish Ministry of Health recommends carrying medicines in your hand luggage, with their prescription, and a medical report in English or in the language of the destination.
| What to prepare | Why |
|---|---|
| Medication for every day of the trip and a few extra days | A cancelled flight or an overrunning meeting should not leave you without treatment. |
| Prescription and a medical report in English, signed and stamped | They justify the treatment at security and customs, according to the Spanish Ministry of Health. |
| Your up to date medication list, with the name of the active ingredient | If you need care abroad, the brand name may not exist there. |
| A written plan for time sensitive medicines | It saves you improvising when you are tired from travelling. |
If you have never made your list, we explain how in your personal medication list.
How do I adjust my doses when I change time zone?
It depends on the medicine and on how many hours of difference there are. With a small time difference, many treatments can simply follow local time, but for some medicines the interval between doses is critical and they need an individual plan made by your doctor or pharmacist before you travel.
Flying west makes the day longer and flying east makes it shorter, so the time between one dose and the next can change by several hours. Always ask about these cases:
| Type of medicine | Why timing matters | What to do |
|---|---|---|
| Insulin and some diabetes medicines | An interval that is too short or too long can cause low or high blood sugar. | Ask your diabetes team for a plan for that specific trip. |
| Anticoagulants and anti epileptic medicines | They need stable levels in the blood. | Ask how to move to local time without shortening or lengthening the interval too much. |
| Oral contraceptives | Some have a very narrow timing window. | Check the leaflet and ask your pharmacist. |
| Medicines for Parkinson's | Symptoms can get worse if a dose is delayed. | Ask your neurologist for a written plan. |
A simple trick is to carry a watch, or a second time zone on your phone, set to home time, so you always know how long it has been since your last dose. And one rule that never changes: do not take a double dose to make up. If you miss a dose, follow what the leaflet says, as we explain in what to do if you miss a dose.
What do I take on the plane and what documents do I need?
Always carry your medication in your hand luggage, never only in your checked bag. For most medicines the prescription and a medical report are enough; for narcotics and psychotropics under international control, the AEMPS also requires a certificate or permit to leave or enter Spain with them.
According to the Spanish Ministry of Health, both the prescription and the medical report should be signed and stamped by the doctor, and the report should include their contact details and your medical history. If you travel with syringes, needles or meters, check the airline's conditions beforehand.
- AEMPS certificate: you apply by email with the documents in PDF, and it takes at least ten days to process.
- Validity and quantity: the certificate is valid for a maximum of three months and, as a general rule, covers the amount needed for 30 days of treatment, even if the trip is longer.
- Destination country: the Spanish certificate only applies to Spain. Some countries tightly regulate bringing in medicines, so check with their embassy or consulate.
If you also take long trips abroad outside work, you may find travelling abroad with your medication useful.
How do I keep my routine between hotels, meetings and dinners?
What works best is linking each dose to something you do in any city, such as breakfast or brushing your teeth, and setting alarms that adjust to local time. That way you do not depend on your schedule, which changes every day on a business trip.
- At home, separate the doses for each day of the trip and carry them in a pill organiser or in your laptop bag, not in the suitcase you leave at the hotel.
- Do not leave medication in the hire car or by the window of your room: heat and light can damage it.
- At work dinners, remember that alcohol interacts with many medicines. We explain this in alcohol and medication.
- Do not use sleeping tablets that have not been prescribed for you to fight jet lag. The CDC advises avoiding long acting sedatives during the flight, and melatonin only helps if it is taken at the right time.
A practical example: Jordi and his trip to Mexico
Let us take the example of Jordi, 52, a sales director. He has high blood pressure, type 2 diabetes treated with tablets and high cholesterol, and takes four medicines. This month he is travelling to Mexico City for a week, several hours behind Barcelona.
- Ten days before, he reviews his medication with his pharmacist: none of his medicines needs a certificate, but she advises him to check with his doctor how to move to local time.
- His GP gives him written instructions for the switch and prepares a report in English, signed and stamped.
- He prepares the doses for eight days (seven of travel and one spare) and keeps them in his laptop rucksack, together with his medication list.
- On his phone, he adds Barcelona time as a second clock and sets alarms that follow local time, linked to breakfast and dinner.
When he returns, he makes the adjustment in reverse. Jordi does not improvise: he has an agreed plan, paperwork and his doses to hand.
How can IMA Health help you?
If you travel often, having your medication already prepared by day and time of each dose saves you counting tablets the night before you leave. At IMA Health we coordinate with a specialised pharmacy that prepares your medication in a personalised dosage system (SPD), we deliver it to your home and we provide personalised follow-up.
If you know you have a long trip coming up, let us know in advance so that your preparation arrives in time. You can see how it works in the IMA Health service.
Sources
- Spanish Ministry of Health: La salud también viaja, travel first aid kit (2025, in Spanish)
- AEMPS: Certificates and permits for travellers carrying narcotic and psychotropic medicines (in Spanish)
- CDC Yellow Book: Jet Lag Disorder
This article is for information only and does not replace advice from your doctor or pharmacist.