Benzodiazepines Abroad: Why Customs Can Seize Your Prescription

A valid prescription does not protect your benzodiazepines at every border. Here is what customs officers actually check, and what happens when supply runs out abroad.

Benzodiazepines abroad: what you need to know

Benzodiazepines are classified as controlled substances in most countries^[1], which means the same pills that sit legally in your medicine cabinet can trigger a customs seizure, a missed flight, or a criminal investigation the moment you cross the wrong border.

This is not a remote worst-case scenario. It is a documented, recurring problem that affects travellers carrying diazepam, lorazepam, alprazolam, clonazepam, and temazepam every single day.This guide focuses on the customs and border-crossing side of benzodiazepine travel — permits, declarations, and what happens at airports. For the treatment-switching angle (when your benzo is banned at your destination and you need a non-benzo alternative for anxiety), see our anxiety medication abroad guide. For antipsychotic-specific travel rules including clozapine monitoring and depot scheduling, see our antipsychotic travel guide.

Medical disclaimer: This article provides general information about customs regulations and travel logistics. It is not medical advice. Benzodiazepine dosage, switching, or discontinuation must be managed by your prescribing physician. Regulations change; always verify current import rules with the destination country's health ministry or embassy before travelling.

The core problem: a prescription is not a universal pass

Each country sets its own import rules for controlled substances. The International Narcotics Control Board (INCB) provides a framework under the 1971 Convention on Psychotropic Substances, but national governments decide how strictly to enforce quantity limits^[2] and what documentation they will accept.

Japan, for example, prohibits importing any quantity of diazepam or other benzodiazepines without prior approval via a Yakkan Shoumei (薬監証明) personal-import certificate from the Ministry of Health, Labour and Welfare (MHLW). The UAE classifies several benzodiazepines as controlled substances under Federal Law No. 14 of 1995, requiring an Emirates Drug Establishment (EDE) import permit applied for at least four weeks before travel.

In practice, a customs officer who finds undeclared benzodiazepines can confiscate them on the spot, even if your prescription is genuine and the quantity is modest.

Countries with outright bans or near-total restrictions

Several destinations impose restrictions that are severe enough that you should contact the destination country's embassy before travelling. The most commonly reported problem destinations for benzodiazepine travellers include:^[3]

Japan: requires the Yunyu Kakunin-sho import certificate for quantities above a one-month supply. Without it, the medication is seized at the border regardless of your prescription.^[4]

UAE: most benzodiazepines are controlled under Federal Law No. 14 of 1995. As of 29 December 2025, the import permit service moved from the Ministry of Health and Prevention to the Emirates Drug Establishment (EDE) at ede.gov.ae. Apply at least four weeks before travel; carrying without the permit is a criminal offence.

Qatar and Kuwait: prohibit personal-use entry of alprazolam (Xanax), diazepam (Valium), clonazepam, zolpidem, codeine, and pregabalin without prior authorisation. Kuwait introduced a stricter regime in December 2025: travellers must obtain advance written or electronic clearance from Kuwaiti officials abroad before boarding their flight, then present certified medical reports to the General Administration of Customs on arrival. Qatar requires patient-specific documentation submitted in advance through its Ministry of Public Health.

Indonesia: classifies benzodiazepines as psychotropic substances under Law No. 5 of 1997, with specific drugs falling across Groups II, III, and IV depending on the molecule (alprazolam and diazepam, for example, are Group II/III). Personal import is permitted only with documentation and within limited quantities, and must be cleared with the National Narcotics Agency (BNN); enforcement is inconsistent but the legal risk of undeclared possession is real.

What the customs declaration actually requires

Declaring your medication at customs is separate from having a prescription. Declaration means proactively informing border control that you are carrying a controlled substance, before they find it.

Documents you should carry for every international trip with benzodiazepines:

A letter from your prescribing doctor on headed paper, in English and ideally the destination country's language. The letter should state your diagnosis (by ICD code if possible), the generic name of the medication, the dose, and the duration of the prescription.

The original pharmacy-labelled packaging. Never decant benzodiazepines into a pill organiser for international travel. The label must match your passport name exactly.

For destinations requiring prior authorisation (Japan, UAE, Kuwait), the specific country permit. These can take two to six weeks to obtain, so apply well before your departure date.

A copy of your International Patient Summary (IPS), which records your medications and diagnoses in a standardised, internationally readable format. You can generate this through Nomedic.

The supply problem: refills abroad are rarely possible

Unlike some non-controlled medications, benzodiazepines are a controlled substance in virtually every country with regulated pharmaceuticals. Walking into a local pharmacy and asking for a refill without a local prescription will fail in almost every case.

Your options if your supply is lost or confiscated are limited and slow.

See a licensed local physician. In most countries, only a registered doctor can prescribe benzodiazepines. A private-clinic consultation costs roughly €50-€150 (~$59-$177) in Western Europe, and €15-€60 (~$18-$71) in Southeast Asia, but the physician may refuse to prescribe a controlled substance to a foreign patient on a short-term visit.

Contact your embassy. Some embassies can facilitate emergency medical documentation that helps local authorities verify your prescription history. This rarely produces medication directly but supports your case.

Use a telemedicine service registered in the destination country. This is increasingly available in the EU, Australia, and Canada, but benzodiazepine prescriptions via telemedicine are restricted in most jurisdictions.

Abrupt discontinuation of benzodiazepines carries serious medical risks including seizures. If your medication is seized, seek medical attention promptly. Do not simply stop taking it.

Non-benzodiazepine alternatives and how they travel

Some prescribers switch patients to non-controlled alternatives before international travel. Whether this is appropriate depends entirely on your medical situation and is a decision for you and your doctor.

Buspirone is unscheduled or lightly regulated in most countries and generally travels without restriction. Hydroxyzine (Atarax, Vistaril) is also unscheduled internationally and broadly available. For sleep, melatonin is prescription-only in the UK and most EU member states (Germany, France, Spain) — only Poland has unrestricted immediate-release OTC access in the EU. Low-dose melatonin supplements are OTC in the US, Canada, Mexico, Japan, and Australia. Always confirm the destination's status; assuming melatonin is universally OTC is a common traveller mistake.

Z-drugs (zolpidem, zopiclone) are controlled in similar ways to benzodiazepines in Japan and several Middle Eastern countries. Do not assume they are easier to travel with.

How to build a pre-travel documentation pack

Start by checking the medication import rules for each country on your itinerary, not just your final destination. A connecting flight through Dubai or Doha means you are technically entering that country's customs zone.

Confirm the legal status of your specific molecule in each country you will transit or enter. Diazepam, lorazepam, alprazolam, and clonazepam are not treated identically everywhere.

Request the doctor's letter at least four weeks before departure. Allow extra time if the letter needs an apostille or official translation.

Apply for any required import permits from the destination country's health ministry. Japan's Yakkan Shoumei certificate and the UAE's Emirates Drug Establishment (EDE) permit each have their own online application processes and timelines (typically two to six weeks). Kuwait now requires advance written/electronic clearance before boarding, and Qatar requires patient-specific documentation through the Ministry of Public Health.

Generate your IPS through Nomedic before you leave. The IPS lists your medications by their INN (international non-proprietary name), which customs and medical staff can read regardless of the brand name used in your country.

Keep all documents in your carry-on luggage, not checked bags. If your checked bag is delayed or lost, you need your paperwork with you when you pass through customs.

Travel insurance and benzodiazepines

Standard travel insurance policies treat anxiety disorders, panic disorders, and insomnia as pre-existing conditions subject to exclusion^[6]. If you do not declare that you take a benzodiazepine and a related medical event occurs abroad, the insurer may deny the claim.

When buying travel insurance, declare your benzodiazepine use explicitly. Ask whether emergency refill costs, psychiatric consultations, and withdrawal-related hospital admissions are covered.

Medical evacuation cover is particularly relevant here. If your medication is seized in a country where no alternative is available and withdrawal creates a medical emergency, evacuation to a facility that can manage the situation may be the only option.

Frequently asked questions

Can I carry diazepam through airport security in my hand luggage?

In most countries, yes, provided you have a doctor's letter and the original pharmacy-labelled packaging. However, some destinations including Japan and the UAE require advance import permits regardless of quantity. Always check the rules of every country on your itinerary, including transit stops, before you fly.

What happens if my benzodiazepines are confiscated at customs?

Your medication may be permanently seized, and in some countries you could face additional questioning or a fine. Because abrupt discontinuation is medically dangerous, seek a local physician or hospital immediately. Do not attempt to manage withdrawal without medical supervision.

Can I refill my benzodiazepine prescription at a foreign pharmacy?

Rarely. Most countries will not dispense benzodiazepines to a foreign patient without a locally issued prescription. Your best option is to carry a full supply for your trip, and to have your prescriber's contact details available so a local doctor can verify your history if needed.

Do I need to declare benzodiazepines on a customs form?

If the customs form asks whether you are carrying prescription medications or controlled substances, always declare them. Failing to declare a controlled substance and having it found during a search is treated more seriously than a declared quantity that exceeds the local limit.

Are Z-drugs like zolpidem subject to the same travel restrictions as benzodiazepines?

In many countries, yes. Japan and several Gulf states treat zolpidem and zopiclone with the same controlled-substance rules as classic benzodiazepines. Check the legal status of your specific molecule by its INN (international non-proprietary name) for each destination.

How does my International Patient Summary help at customs?

The IPS lists your medications by their internationally recognised generic names (INNs) and includes your diagnosis codes. This format is readable by customs officers and medical staff in any country, and it corroborates your doctor's letter. You can generate an IPS through the Nomedic app before you travel.