Dexmethylphenidate in Japan: Import Rules & MHLW Permit

Quick reference

Drug class: CNS stimulant
Controlled substance: Yes: classified as a psychotropic under Japan's Narcotics and Psychotropics Control Act
Prescription required: Yes
Available locally: No: dexmethylphenidate is not registered or sold in Japan under any brand name
Storage: Room temperature, below 30°C, away from moisture and direct light
Max supply to carry: Up to 30 days for psychotropics; a Yunyu Kakunin-sho (import certificate) is required for quantities exceeding that threshold
Key document: Yunyu Kakunin-sho (import certificate) issued by Japan's Ministry of Health, Labour and Welfare, plus a doctor's letter in English and Japanese
Emergency alternative: If your supply is lost or stolen, contact your embassy and the nearest major hospital psychiatric department; a local prescription is not possible for dexmethylphenidate as it is unregistered in Japan

Travelling to Japan with dexmethylphenidate: what changes

Dexmethylphenidate, sold as Focalin and Focalin XR in the United States and Canada, is regulated as a psychotropic substance under Japan's Narcotics and Psychotropics Control Act^[1]. The medication is not registered for sale in Japan under any brand name, which means you cannot obtain a local refill. You must carry your entire supply and secure an official import certificate before you fly.

Medical disclaimer: This guide is for informational purposes only and does not constitute medical advice. Always consult your prescribing doctor before travelling with medication, particularly regarding supply quantities, storage requirements, and import documentation.

Before you travel

Documentation for travelling to Japan with dexmethylphenidate

Because dexmethylphenidate is a psychotropic under Japanese law, you must obtain a Yunyu Kakunin-sho (import certificate) from Japan's Ministry of Health, Labour and Welfare^[2] before you travel. A doctor's letter alone is not sufficient for psychotropics. The certificate application requires a copy of your prescription, a letter from your prescribing doctor, and passport details. See our ADHD in Japan guide for further detail on import documentation.

Pre-travel paperwork timeline

T-30 days
Book an appointment with your prescribing doctor to renew your prescription and request a formal letter for international travel. Confirm the letter includes your full name, medication name (dexmethylphenidate), dose, frequency, quantity, diagnosis (one word), and doctor's registration number on clinic letterhead.Prescriber letter
T-14 days
Submit your Yunyu Kakunin-sho (import certificate) application to Japan's Ministry of Health, Labour and Welfare Regional Bureau of Health and Welfare. Apply by post or in person via the Japanese consulate or embassy in your country. Processing typically takes 2 to 3 weeks.Yunyu Kakunin-sho
Processing time is 2-3 weeks. Application forms are available from the MHLW website or your nearest Japanese embassy.
T-7 days
Have your doctor's letter translated into Japanese. A certified translator or your doctor's clinic can provide this. Keep both the English and Japanese versions.Translated letter
T-1 day
Print the Yunyu Kakunin-sho, doctor's letter (both languages), and prescription. Keep medication in original packaging with the pharmacy dispensing label clearly visible. Do not consolidate tablets into a pill organiser.
T-0 (border)
Declare the medication proactively on the Japanese customs declaration form. Present the Yunyu Kakunin-sho and doctor's letter to the customs officer on arrival. Keep all documents accessible without unpacking your entire bag.

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What your doctor's letter must include

Full name, medication name (dexmethylphenidate and brand name Focalin or Focalin XR), dose and frequency, quantity being carried, diagnosis (one word only), doctor's signature and registration number, and clinic letterhead. The letter should also state the trip dates and confirm the medication is for personal medical use. Provide both an English version and a Japanese translation stamped by the clinic.

A notarised or apostilled translation is not required by Japanese customs for the doctor's letter, but a certified Japanese translation alongside the English original is strongly advisable. The Yunyu Kakunin-sho itself is issued in Japanese by the MHLW and does not require further translation.

How much dexmethylphenidate to bring

Japan permits a personal import of psychotropics up to a 30-day supply^[2] when accompanied by a valid Yunyu Kakunin-sho. If your trip exceeds 30 days, contact the MHLW Regional Bureau to discuss extended-stay provisions. Because dexmethylphenidate is not available locally, there is no refill pathway; bring at minimum your full supply plus a small buffer for delays. Refills abroad are not possible, so over-packing within the legal limit is advisable.

Split your supply

Carry the bulk of your medication in your hand luggage and a smaller backup amount in your checked bag, each in original packaging with pharmacy labels. If one bag is delayed or lost, you retain access to part of your supply.

Packing and storing dexmethylphenidate for travel

Dexmethylphenidate tablets should be stored at controlled room temperature, 20°C to 25°C, protected from moisture and light^[3]. Japan's summer months are hot and humid, with temperatures frequently exceeding 33°C in Tokyo and Osaka; keep the medication in your hand luggage and away from car dashboards or direct sunlight.

During layovers, avoid leaving medication in a checked bag in a heated cargo hold for extended periods. Original blister packs or manufacturer bottles with sealed lids protect against humidity better than secondary containers.

At the airport and border

Airport security with dexmethylphenidate

At security checkpoints, keep dexmethylphenidate tablets in your hand luggage in their original sealed packaging. Solid oral tablets are not subject to liquid restrictions. Present your doctor's letter and Yunyu Kakunin-sho to any security officer who asks about your medication, even before reaching Japan. Keep documents in a clear document wallet at the top of your bag for fast access.

Customs and medication import rules for Japan

Japan Customs requires you to declare any psychotropic medication on the incoming traveller declaration form^[4]. Tick the relevant box and present the Yunyu Kakunin-sho alongside the declaration. Officers may ask to verify that the quantity carried matches the certificate. Carrying more than the authorised quantity, or travelling without a certificate, can result in confiscation of the medication and potential legal penalties.

Controlled psychotropic: carry your certificate

Dexmethylphenidate is a psychotropic under Japan's Narcotics and Psychotropics Control Act. Importing it without a Yunyu Kakunin-sho is a criminal offence. The quantity on the certificate must match what you are carrying. Do not transfer tablets to an unlabelled container at any point during travel.

While in country

Dexmethylphenidate availability in Japan

Brands of dexmethylphenidate sold in Japan

Brand name	Indication	Formulation	Supply note
Not available	No approved indication	Not registered in Japan	Dexmethylphenidate (Focalin, Focalin XR) has no marketing authorisation in Japan. Local refill is not possible.

Dexmethylphenidate is not approved or registered by Japan's Pharmaceuticals and Medical Devices Agency (PMDA)^[5]. Neither Focalin nor Focalin XR is sold in Japanese pharmacies. Methylphenidate (Ritalin, Concerta) is approved in Japan for certain indications but is a separate compound; it is not therapeutically interchangeable on a one-to-one basis without prescriber guidance. Do not attempt to substitute without consulting a specialist.

Finding a doctor who can prescribe dexmethylphenidate in Japan

Because dexmethylphenidate is unregistered in Japan, no Japanese psychiatrist can legally prescribe it. Major hospitals in Tokyo and Osaka, such as St. Luke's International Hospital in Tokyo, have English-speaking psychiatrists who can advise on your situation^[6], though they cannot dispense or prescribe dexmethylphenidate itself.

A consultation with a psychiatrist costs approximately ¥5,000 to ¥15,000 (~$33 to ~$100 / ~€30 to ~€92) at a private clinic. Telemedicine with a doctor from your home country may be a faster option for documentation support if your supply runs short.

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Use Nomedic's provider search to find doctors and pharmacies in Japan.

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Storing dexmethylphenidate while in Japan

Store tablets at room temperature, ideally between 20°C and 25°C, and away from direct sunlight and humidity. Japanese hotel rooms are typically air-conditioned in summer; keep the medication away from the air-conditioning unit's condensation zone.

If staying in a non-air-conditioned room during the June to September period, use the hotel safe or a cool interior drawer rather than a window ledge or bathroom shelf. Do not refrigerate the tablets, as condensation on removal can degrade the coating of extended-release formulations such as Focalin XR.

Emergencies

What to do if something goes wrong with your dexmethylphenidate in Japan

If your medication is lost or stolen, file a police report (koban) immediately and obtain a reference number. Contact your embassy or consulate; they can help facilitate emergency contact with your prescribing doctor at home. Because dexmethylphenidate cannot be replaced in Japan, your primary goal is to obtain documentation for your insurer and arrange an earlier return flight if the loss is significant.

If your supply runs out unexpectedly, go to the psychiatry department of a large university hospital. They cannot dispense dexmethylphenidate, but a psychiatrist may be able to advise on a short-term bridging plan. For a broader picture of accessing care in Japan, see Nomedic's Japan travel guide.

“私はADHDの薬（デクスメチルフェニデート）を持っています。/ 医師を呼んでください。/ 最寄りの薬局はどこですか？ / 私の薬が紛失しました。”

I have my ADHD medication (dexmethylphenidate). / Please call a doctor. / Where is the nearest pharmacy? / My medication has been lost.

Japan's emergency number is 119 for ambulance and 110 for police. For non-emergency medical help, call the Japan Health Consultation Service on 0120-565-653 (toll-free, available 24/7 in multiple languages).

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Frequently asked questions

Is dexmethylphenidate legal in Japan?

Dexmethylphenidate is a psychotropic substance under Japan's Narcotics and Psychotropics Control Act and is not registered or sold in Japan under any brand name. You may bring a personal supply only with a Yunyu Kakunin-sho import certificate issued by the Ministry of Health, Labour and Welfare, together with a doctor's letter in English and Japanese. Declare it on the incoming traveller declaration form.

Can I bring dexmethylphenidate into Japan without a special permit?

No. Dexmethylphenidate is a psychotropic under Japan's Narcotics and Psychotropics Control Act, so a Yunyu Kakunin-sho (import certificate) from Japan's MHLW is required^[2] before you travel. Apply at least two to three weeks before departure through your nearest Japanese embassy or consulate.

How do I apply for a Yunyu Kakunin-sho for my ADHD medication?

Download the application form from the MHLW website and submit it with a copy of your prescription and doctor's letter to the Regional Bureau of Health and Welfare nearest to your entry port^[2], or via your nearest Japanese embassy. Allow at least two to three weeks for processing. The certificate is issued free of charge.

Does Japan's 30-day psychotropic import limit apply to dexmethylphenidate?

Yes. Japan's MHLW sets a maximum personal import of 30 days' supply for psychotropic substances^[2], and dexmethylphenidate falls within that category. If your trip exceeds 30 days, contact the MHLW Regional Bureau before departure to explore extended-stay provisions.

Is Focalin or Focalin XR available in Japanese pharmacies?

Neither Focalin nor Focalin XR is registered or sold in Japan. Dexmethylphenidate has no marketing authorisation from Japan's PMDA, so pharmacies cannot dispense it under any brand name. Bring your entire supply from home.

Can a Japanese doctor prescribe dexmethylphenidate if I run out?

No. Because dexmethylphenidate is not registered in Japan, Japanese physicians cannot legally prescribe it or arrange dispensing. If your supply runs short, contact your prescribing doctor at home via telemedicine and consult the psychiatry department of a large hospital for interim advice.

Is methylphenidate (Ritalin, Concerta) the same as dexmethylphenidate in Japan?

Methylphenidate (sold in Japan as Ritalin and Concerta) is a related but distinct compound; it is not interchangeable with dexmethylphenidate without prescriber guidance. If you are considering whether methylphenidate could serve as a bridge option, see Nomedic's guide to methylphenidate in Japan and discuss with your specialist before travel.

Related practical guide

10 Things You Must Do Before Travelling Abroad with ADHD Medication

ADHD stimulants are banned outright in some countries and tightly controlled in many others. Here is the practical checklist every traveller needs before setting off.

Dexmethylphenidate in Japan: Import Rules and Brands