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Medications That Are Restricted or Banned in Japan: The Trap Travelers Don't See Coming

Restricted medications Japan rules catch visitors who assume a home prescription travels with them. A drug that is routine at home can be banned at the Japanese border, and a valid prescription does not override the ban.12

Confirm current details with official sources

Fees, rules, and requirements can change. Confirm current details at the Ministry of Health, Labour and Welfare, the Narcotics Control Department, Japan Customs, and the nearest Japanese embassy or consulate. This article is general information, not medical advice; for your specific prescription, consult a licensed physician or pharmacist, and for entry cases, confirm with the relevant Japanese embassy or consulate before departure.

Overview​

Japan controls personal medication import under the Pharmaceutical Affairs Law and the Customs Law, regulated by the Ministry of Health, Labour and Welfare (MHLW).2 Some medicines cannot be imported even when they are prescription medicines in your country, so the check happens before departure, not at the airport.1

The restriction applies regardless of passport. Every visitor faces the same ban and control categories, while the office you apply to depends on your arrival airport and the embassy or consulate you ask depends on where you live.12

Who this applies to most​

This article matters most if you take a daily prescription, especially a stimulant-class ADHD prescription. It also applies if you carry codeine-containing, psychotropic, or narcotic prescriptions, even for a short stay.13

Short stays get no exemption from the categories. Quantity limits still apply, and controlled categories still need advance permission (as of 2026-09; confirm current figures with MHLW).134

Japan sorts controlled medicines into Narcotics, Psychotropics, Stimulants, Stimulants Raw Materials, Cannabis and Opium. The procedure you follow depends on which category your medicine falls in.1

This is a legal classification system, not a judgment on your treatment. A substance can be standard care in one country and a controlled stimulant in Japan, and Japanese law applies at the border.12

Ingredient, not brand, decides legality​

Customs and health authorities regulate by active ingredient and category, not by foreign brand name. The Narcotics Control Department (NCD) list carries no brand names and tells travelers who are unsure to check the category with the prescribing doctor.1

That means two boxes with similar names can face different rules when their ingredients differ. Photograph the ingredient panel, note the generic name and strength, and check that against official guidance.12

Check the ingredient, not the brand name

Write down the active ingredient, dose, and quantity for every prescription and over-the-counter product you plan to carry. Brand names do not decide legality in Japan; the ingredient and its category do.1

The restricted list and quantity thresholds change over time. Recheck against MHLW, NCD, Customs, or embassy guidance close to departure rather than relying on a past trip (as of 2026-09).132

What is banned, what is restricted, and what is allowed within limits​

Japan uses three outcomes for travelers: banned with no import path, restricted with advance permission, or allowed within personal-use quantity limits. Find your outcome before you pack.13

Banned stimulants with no import path​

No individual traveler can import or export medicines containing heroin, opium powder, methamphetamine and amphetamine (INN: dexamphetamine, levamfetamine), or methaqualone, even as prescribed medicines from another country.1

Amphetamine, the active ingredient of Adderall, is controlled as a Stimulant under the Stimulants Control Act. It cannot be imported into Japan even for treatment purposes.1

Do not bring Adderall or other amphetamine medicines to Japan

Amphetamine and methamphetamine preparations have no personal import path, even with a valid home prescription and even when declared honestly. Embassy guidance states that bringing a Japan-illegal medicine risks arrest and detention.12

Lisdexamfetamine, the active ingredient of Vyvanse and related brands, sits in a different group. It is controlled as a Stimulants Raw Material and can be imported or exported only with advance permission (as of 2026-09; confirm current figures with NCD).1

Restricted categories that need advance permission​

Medicines in the Narcotics category need permission before entry or departure. NCD names morphine, fentanyl, oxycodone, codeine, and tapentadol as examples.1

Medicines in the Stimulants Raw Materials category also need permission before entry or departure. NCD names lisdexamfetamine and pseudoephedrine as examples.1

Psychotropics follow a separate carrying procedure. Examples include methylphenidate and dexmethylphenidate, zolpidem, alprazolam, clonazepam, and diazepam.1 At or below the NCD reference-table amount and not in injection form, no doctor certificate or authority permission is needed under the Narcotics and Psychotropics Control Law.1

Above the NCD reference-table amount or in injection form, a doctor certificate is required. The certificate must identify the disease, the necessity of the drug, the names and quantities, with signature and issue date.1

If psychotropics exceed a one-month supply, MHLW directs travelers to contact yakkan@mhlw.go.jp (as of 2026-09).1 Narcotics and Stimulants Raw Materials for a specific patient can only be brought with permission from the Regional Bureau directors received before departure.3

General prescription and OTC quantity limits​

For ordinary prescription drugs, the personal-use line is clear. Prescription drugs, poisons, and deadly poisons are allowed up to a one-month supply without Import Confirmation (as of 2026-09; confirm current figures with MHLW).345

Other drugs and quasi-drugs are allowed up to a two-month supply without Import Confirmation (as of 2026-09).34 Drugs for external use, excluding poison, deadly poison, and prescription drugs, are allowed up to 24 units per item (as of 2026-09).3

Injectable drugs and syringes are narrower. Only a プレフィルドシリンジ (purefirudo shirinji, "pre-filled syringe") or self-injection kit, up to a one-month supply, fits the no-certificate allowance (as of 2026-09).3

ItemAmount without certificateAs ofNotes
Prescription drugs (including poisons)Up to 1 month supply2026-09345
Other drugs and quasi-drugsUp to 2 month supply2026-0934
External-use drugs (non-prescription)Up to 24 units per item2026-093
Pre-filled syringe or self-injection kitUp to 1 month supply2026-093

Figures in this table reflect MHLW personal-use guidance (as of 2026-09).3 Above those amounts, travelers must apply for Import Confirmation and receive it before leaving home, then show it to the customs officer.3

Medication brought for personal use must not be sold or given to others.34 The allowance covers your own treatment during your stay, not supplies for other people.

The import certificate process and timeline​

The 輸入確認書 (yunyu kakunin-sho, "import confirmation certificate"), previously called Yakkan Shoumei, confirms advance notice for medication above personal-use limits.32 It is a confirmation document, not a second prescription.

The process below covers the general certificate track and the separate NCD permission track. Use the track that matches your category.

Which bureau and which form for your case​

Yunyu Kakunin-sho applications go to the Regional Bureau of Health and Welfare closest to your arrival airport.2 Narcotics cases require advance permission from the Narcotics Control Department at the Regional Bureau closest to your arrival airport.2

Routing examples show why the arrival airport matters. The Kanto-Shinetsu Bureau (email yakkan@mhlw.go.jp) covers Narita and Tokyo International (Haneda) arrivals, while the Kinki Bureau (email kiyakuji@mhlw.go.jp) covers Chubu Centrair and Kansai arrivals among others (as of 2026-05-18).2

Apply to the bureau covering your arrival airport

NCD narcotics and stimulant-raw-material applications go by email, fax, or mail to the NCD office covering your entry airport area. When entry and departure airports differ, the entry-airport office governs (as of 2026-09).1

Required NCD documents include the import application form, a medical certificate from the prescribing doctor, and photos or documents showing medicine name and strength (as of 2026-09; confirm current figures with NCD).1 The medical certificate must state your name, address, specific reason, medicine list with doses and strength, doctor signature, and an issue date within 3 months (as of 2026-09).1

Online Yunyu Kakunin-sho processing has been available since 2023-02-01 for personal use, doctor treatment use, and trial or research use.6 The full flow from application through certificate download can be completed on PC, and the issued file is used for customs clearance on arrival.6

Lead time and what to present at customs​

Start weeks before departure, not at the airport. Travelers should apply for Yunyu Kakunin-sho at least two weeks before the travel date (as of 2026-05-18; confirm current figures with the Embassy of Japan).2

NCD sets its own floor for narcotics and stimulant-raw-material cases. Applicants should apply at least 14 days before travel, and NCD warns that last-minute applications may not be accepted, especially at Tokyo NCD (as of 2026-09).1

The certificate must be received before leaving for Japan and declared to the customs officer on arrival, with the prescription.23 Travelers must carry the medicine themselves for NCD-permission categories; mailing it or entrusting it to family members is not permitted.1

At entry or departure, the NCD import or export certificate must be shown to the customs officer.1 Keep the certificate, prescription, and medication together in hand luggage so presentation is simple.

What happens at customs without clearance​

Prohibited stimulants have no personal-use allowance. There is no quantity that becomes lawful through declaration alone.1

Embassy guidance states the consequence plainly. Bringing a Japan-illegal medicine risks arrest and detention by Japanese authorities even with a valid home-country prescription.2

Declaration does not legalize a banned medicine

MHLW states that prohibited and controlled drugs cannot be brought into Japan outside their permission paths, regardless of quantity limits.3 Customs grants private import only within the permitted scope and points travelers to the Regional Bureau pharmaceutical inspector for details.4

Confiscation, detention, and prosecution are the documented risks for stimulant and narcotic violations. The prevention step is a pre-departure category check and, where a path exists, a certificate received before the flight.12

How to check your medication before you fly​

Confirm the category before departure through the NCD list and, when unsure, through the prescribing doctor.1 Start with the ingredient list, then match it to prohibited, narcotic, psychotropic, stimulant-raw-material, or general groups.

MHLW provides the yakkan@mhlw.go.jp inquiry point for personal-use import questions (as of 2026-05-18).2 Embassy guidance asks travelers to include active ingredients, medicine name, dosage and quantity, and email address when writing.2

The nearest Japanese embassy or consulate is an authoritative pre-travel check point alongside MHLW, NCD, and Customs, because lists and thresholds change without notice.2 Contact the office that serves your residence well before the two-week application floor, and sequence this check with the other pre-departure steps in Japan Trip Checklist: What to Sort Out Before You Fly.

Use official check points, not forums, for legality

Comprehensive legality information comes only from the Japanese government and is subject to change. Embassy guidance directs travelers to MHLW and NCD sources rather than third-party lists.2

JNTO operates visitor-oriented medical and insurance guidance that helps with in-country care gaps, separate from the legality check itself.7 If medication runs out or a substitute is needed in Japan, that guidance points to insurance and facility resources.

Talking to your doctor about trip coverage​

Some travelers discuss a temporary non-restricted substitute with their prescribing doctor for the trip period. Substitution questions belong with the prescribing doctor, not with customs or an article.12

Do not switch doses or products on your own to fit the rules. Bring the question, your ingredient list, and your travel dates to a licensed physician or pharmacist, and keep any change under their direction.

Good to know​

A valid prescription from home does not override Japanese control law. NCD states Adderall-type amphetamine products cannot be imported even for treatment, and embassy guidance states a valid home prescription does not prevent arrest and detention for a Japan-illegal drug.12

Check legality first, then paperwork. A prescription copy supports a lawful import; it does not create one.

Do not mail medication ahead as a workaround​

Mailing medication ahead does not avoid the carrying rules. NCD requires travelers to carry NCD-permission medicines themselves and bars sending them or entrusting them to others.1

Carry permitted medication in person with its certificate. If a parcel route seems easier, it is not lawful for these categories.

Keep medication in original packaging with prescription copy in carry-on​

Keep every product in original packaging with a prescription copy in carry-on luggage. NCD requires package photos or documents showing name and strength at application, plus a doctor certificate, and the issued certificate with prescription is presented at customs on arrival.12

Checked luggage separates you from the papers when questions arise. Hand luggage keeps medicine, certificate, and prescription together.

Lists and thresholds change; recheck close to departure​

Lists, thresholds, and contact points change. MHLW, NCD, Customs, and embassy pages all frame their figures as subject to change, so recheck during trip planning and again before the application lead time closes.132

Embassy guidance sets the Yunyu Kakunin-sho lead time at a minimum of two weeks, and NCD sets 14 days for its own permission track (as of 2026-05-18 and 2026-09 respectively).21 Build the medication check into the earliest planning stage, not the final week.

See also​

References​

Footnotes​

  1. Narcotics Control Department (NCD), Ministry of Health, Labour and Welfare. "Application Guidance." https://www.ncd.mhlw.go.jp/en/application2.html ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8 ↩9 ↩10 ↩11 ↩12 ↩13 ↩14 ↩15 ↩16 ↩17 ↩18 ↩19 ↩20 ↩21 ↩22 ↩23 ↩24 ↩25 ↩26 ↩27 ↩28 ↩29 ↩30 ↩31 ↩32 ↩33 ↩34 ↩35 ↩36 ↩37

  2. Embassy of Japan in the United States of America. "Bringing Medications into Japan." https://www.us.emb-japan.go.jp/itpr_en/bringing-medications-to-japan.html (page dated 2026-05-18) ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8 ↩9 ↩10 ↩11 ↩12 ↩13 ↩14 ↩15 ↩16 ↩17 ↩18 ↩19 ↩20 ↩21 ↩22 ↩23 ↩24

  3. Ministry of Health, Labour and Welfare (MHLW). "Information for those who are bringing medicines for personal use into Japan." https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/kenkou_iryou/iyakuhin/kojinyunyu/topics/tp010401-1_00001.html ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8 ↩9 ↩10 ↩11 ↩12 ↩13 ↩14 ↩15 ↩16 ↩17 ↩18 ↩19 ↩20

  4. Japan Customs (Ministry of Finance). "1806 Private importation of drugs, cosmetics, etc. (FAQ)." https://www.customs.go.jp/english/c-answer_e/imtsukan/1806_e.htm ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7

  5. Kinki Regional Bureau of Health and Welfare (MHLW). "Procedures of Bringing Medicines into Japan." https://kouseikyoku.mhlw.go.jp/kinki/iji/forigners.html (page dated 2026-01-28) ↩ ↩2

  6. Ministry of Health, Labour and Welfare. "Application for Import Confirmation." https://impconf.mhlw.go.jp/about_en.htm (online portal operating since 2023-02-01) ↩ ↩2

  7. Japan National Tourism Organization (JNTO). "Travel Insurance in Japan." https://www.japan.travel/en/plan/travel-insurance-in-japan/ ↩