NaTHNaC / Travel Health Pro. Medicines and travel.https://travelhealthpro.org.uk/factsheet/43/medicines-and-travel
Key takeaways
- HRT is not a controlled drug, so there is no need for a special export licence. A doctor's letter and your original pharmacy packaging are all you need for most journeys.
- Oestrogen gel and spray count as liquids for airport security, but essential liquid medicines are exempt from the 100ml rule when accompanied by the right documentation.
- Different HRT formats have different storage and travel considerations. Knowing the specifics for your format, whether that is a patch, gel, tablet, or testosterone cream, makes the difference between a straightforward trip and an anxious one.
Introduction
Travelling with HRT throws up a surprising number of practical questions. Can gel go through airport security? What happens to a patch in extreme heat? Do you need a special letter? What if your medication gets lost or damaged? And if you cross multiple time zones, when exactly are you supposed to take your daily tablet?
“None of these questions have complicated answers, but finding clear, UK-specific guidance in one place is harder than it should be. This article covers everything you need to know before you travel, at the airport, and while you are away, with a format-by-format breakdown and a pre-travel checklist at the end.”
One reassuring thing to know before anything else: HRT is not a controlled drug under UK law. The strict rules around export licences and documentation that apply to strong painkillers and sedatives do not apply to HRT. You are carrying prescription medication, and the steps involved are straightforward.
Before you go: planning your HRT for travel
The most important travel preparation for HRT happens before you leave home.
Get enough supply. An doctor can prescribe up to three months of medication to cover travel abroad, according to guidance published by Nottinghamshire ICB (NHS, November 2024). Request your prescription in good time, particularly if you are travelling for an extended period. Voy members can request sufficient supply to cover their trip in advance through the Voy platform. Always pack slightly more than you need: delays happen, bags go missing, and running out abroad is avoidable.
Get a doctor's letter. A letter from your prescriber is the single most useful document you can carry. NaTHNaC (Travel Health Pro), the NHS-affiliated national authority on travel medicine, recommends carrying a copy of all prescriptions plus a letter from your prescriber that includes your name, the generic drug names, doses, quantities, and the prescriber's signature and registration number. Voy members can request this through their Voy consultation. Keep both a printed copy and a digital copy in your email in case one is lost.
Check your destination's rules. HRT is accepted without restriction in most European and Western destinations, but some countries, particularly in the Middle East and parts of Asia, have stricter controls on hormone products. FCDO country travel advice and the relevant embassy are the correct UK resources for checking destination-specific medicine import rules. NaTHNaC also provides destination-specific guidance. Do not rely on general articles (including this one) for specific country rules, as these change regularly.
Declare HRT on your travel insurance. HRT counts as a pre-existing medical treatment for the purposes of most travel insurance policies. Declaring it ensures you are covered for medication lost, stolen, or damaged abroad, as well as for any related medical costs. Failing to declare it may invalidate your claim.
Getting through airport security with HRT
This is the question most women have, and the answer is clearer than airport security queues tend to feel.
HRT in tablet, patch, or pessary form travels without any restriction in hand luggage. These formats are not liquids and are not subject to the 100ml rule. Keep them in original packaging with the pharmacy label visible.
HRT gels and sprays (including oestrogen gel, oestrogen spray, and testosterone cream or gel) are liquids for security purposes. The standard UK airport rule limits liquids in hand luggage to containers of 100ml or less, placed in a single transparent resealable bag. However, GOV.UK's hand luggage guidance is clear that essential liquid medicines are exempt from this limit. You can carry more than 100ml of a liquid medicine if you have a supporting letter or signed prescription from a doctor or medical professional. Airport staff may open containers to verify the contents, so keep your documentation easily accessible, not buried at the bottom of your bag.
This exemption applies to UK airport departures. If you are flying from an overseas airport to return home, rules may differ. Check with the specific airport or airline before your outbound journey if you plan to return with medication purchased abroad.
Testosterone prescribed as part of a women's HRT plan may attract additional attention at security or customs in some countries, particularly where it is associated with sports regulations. A clear doctor's letter explaining the prescription for menopause is particularly important for women carrying testosterone.
Always carry HRT in your hand luggage. Never put it in hold luggage. Temperature fluctuations in aircraft holds can be extreme, and if your bag is delayed or lost, your medication goes with it.
Format-by-format guide
Different HRT formats have different practical considerations for travel. Here is what you need to know for each.
Oestrogen gel (Oestrogel, Sandrena, Oestrogel pump):
Gel is a liquid for security purposes. Carry your doctor's letter and prescription to use the medical liquid exemption. Store away from direct sunlight and heat. On holiday, apply your gel first thing in the morning before sunscreen, moisturiser, or swimming. Wait at least one hour before applying anything else to the same skin area. This sequencing matters more on holiday, when the routine of sunscreen, sunbathing, and swimming can disrupt normal habits.
Oestrogen spray (Lenzetto):
Lenzetto is a pump spray applied to the forearm. It is a liquid for security purposes; the same exemption and documentation applies as for gel. Store at room temperature, away from heat and direct light.
Patches (twice weekly or weekly):
Patches are not liquids and travel without restriction in hand luggage. Standard storage is at room temperature, away from direct heat and sunlight. In hot weather, a cool bag is advisable. Avoid applying patches to areas that will be directly exposed to sun, saunas, or hot tubs while wearing them. Heat increases blood flow to the skin and can cause a transdermal patch to release medication faster than the labelled rate, which may lead to fluctuating hormone levels. While studies specifically on oestrogen patches and heat are limited, this is the general principle for transdermal patches and the reason saunas and hot tubs are not recommended while wearing one. If a patch falls off in the heat, replace it and make a note of the date so your rotation schedule stays on track.
Tablets (including Utrogestan / micronised progesterone):
Tablets have no special security requirements. Store at room temperature as directed by the patient information leaflet, which is the definitive guide for your specific product. Utrogestan, for example, should be stored below 25°C and protected from moisture. Keep tablets in original packaging.
Testosterone (Testogel, Androfeme, Voy Testosterone cream):
Testosterone gel and cream are liquids for security purposes. The medical liquid exemption applies. A doctor's letter is particularly important for women carrying testosterone as part of a menopause plan, both for airport security and for customs at the destination. Some countries treat testosterone with additional scrutiny due to its association with performance-enhancing drugs. Carry documentation that clearly explains your prescription and its clinical purpose.
For all formats: always check your specific product's patient information leaflet for the recommended storage temperature range. Do not rely on general guidance alone.
Storing your HRT in the heat
Heat is the main storage risk for most HRT formats on holiday.
The general principle: keep your HRT cool, dry, and out of direct sunlight. Avoid leaving it on a bathroom shelf in a hot hotel room, in a beach bag in direct sun, or in a car parked in the heat.
A small insulated cool bag or thermos flask works well for gel and patches. It does not need to be refrigerated unless the product leaflet specifically requires it, but avoiding extremes matters. Most gels and tablets are stable at normal room temperature (typically up to 25°C) but the ambient temperature in a hot hotel room or parked car can significantly exceed this.
For gel users on holiday: apply first, then wait at least an hour before sunscreen, swimming, or other products on the same area. Voy's guidance on HRT products in hot weather covers this in more detail and is worth reading before you travel.
Managing your HRT schedule across time zones
The practical answer varies by format.
Daily products (tablets, gel, spray): shifting your schedule gradually across a long haul journey works for most women. If you are travelling east and the time difference is large, take your medication at the nearest equivalent local time on arrival rather than waiting for the full delay. Set a phone alarm in local time and maintain it throughout your trip.
Patches (twice weekly or weekly): patches are less sensitive to precise timing than daily tablets because they deliver a continuous dose. Continue your usual patch change days, adjusted to local time. Keep a note of the date applied so you can track the change schedule even when jet-lagged.
Utrogestan (taken at night): if you take Utrogestan at night for its sedative properties, continue to take it at local bedtime rather than adhering rigidly to UK time. This is the most practical approach and avoids the sleep disruption that can come from trying to maintain a home time schedule.
If you are unsure how to adjust your specific HRT schedule, ask your Voy specialist before you travel.
Country-specific rules: what to check before you travel
HRT is not a controlled drug under UK law, and the export licence requirements that apply to opioids, benzodiazepines, and similar medications do not apply to HRT. This is confirmed by GOV.UK's controlled drug guidance.
However, destination countries have their own rules, and these vary significantly.
The only reliable way to check is:
- FCDO country travel advice for your destination
- The destination country's embassy in the UK
- NaTHNaC / Travel Health Pro destination-specific medicine guidance
Do this check at least two to three weeks before travel, to give time to obtain any additional documentation if required. For destinations where testosterone may attract additional scrutiny, a detailed doctor's letter in English and, if possible, the local language is strongly advisable.
What to do if your HRT is lost, delayed or runs out abroad
This is the question no one wants to be asking in an unfamiliar country, but it is worth knowing the answer before you go.
Step one: contact Voy. Voy specialist consultations are available remotely. If you are a Voy member and your HRT is lost or runs out while you are abroad, contact the Voy team via the app. Depending on your destination and the format involved, they may be able to advise on local equivalents
Step two: contact your GP. Your UK GP can advise on emergency supply or provide documentation for a local pharmacy. If you have a copy of your prescription with you (which you should), this speeds up the process considerably.
Step three: check local pharmacies. In many European countries, oestrogen products are available from pharmacies, sometimes without a prescription. The brand names and formulations will differ from UK equivalents; a generic name (oestradiol, progesterone) on your prescription letter will help a local pharmacist identify an equivalent.
Step four: make a travel insurance claim. If your medication was lost or stolen, contact your travel insurer. This is why declaring HRT before travel matters: a declared pre-existing treatment is covered; an undeclared one may not be.
Your pre-travel checklist
Use this before every trip.
- Request sufficient supply to cover your trip plus a buffer, via Voy or your GP
- Request a doctor's letter from Voy or your GP (patient name, drug names, doses, quantities, prescriber details)
- Print a copy of your prescription and email yourself a digital copy
- Pack HRT in hand luggage only, in original pharmacy packaging
- Check destination rules via FCDO country travel advice and NaTHNaC
- Pack an insulated cool bag or thermos for temperature-sensitive products
- Check your product's patient information leaflet for specific storage temperatures
- For gel or spray: confirm the medical liquid exemption applies and carry your letter in an accessible place
- For testosterone: carry a detailed doctor's letter explaining the clinical purpose of the prescription
- Declare HRT on your travel insurance policy
- Set phone alarms in local time for your medication schedule
- Save Voy contact details in case you need remote specialist support
