Bringing medication into Japan: rules, limits, and paperwork

This guide is for expats, students, workers, and long stay visitors who need to bring medication into Japan for personal use. It explains how to check legality by active ingredient, not just brand name, and what to do if your medication needs extra approval.

Rules can change, so verify the latest official guidance before travelling.

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Key takeaways

• Check your medicine before you travel. Japan’s rules depend on the active ingredient, medicine category, and quantity, so do not assume that a medicine available at home can automatically be brought into Japan.
• You can usually bring up to one month’s supply of many prescription medicines and up to two months’ supply of many over-the-counter medicines without an import confirmation.
• Pay particular attention to cold, sinus, sleep, and similar medicines. Check the active ingredients rather than relying on the brand name, as some ingredients may be restricted or treated differently in Japan.
• Controlled substances have separate rules. Narcotics, stimulants’ raw materials, and certain psychotropics can require advance permission or have specific quantity limits.
• Apply for a Yunyu Kakunin-sho when required. This is Japan’s current import confirmation process, formerly commonly referred to as Yakkan Shoumei. You may need it when bringing quantities above the standard personal-use limits or for certain medicines.
• If you are moving to Japan, plan beyond the medicine you bring with you. Check whether you can obtain the same medicine locally and arrange a doctor, pharmacy, insurance coverage, and a payment backup before your initial supply runs out.

Check whether your medication is allowed in Japan

Your first check is not the brand on the box. Japan’s rules focus on the active ingredient, the medicine category, and the quantity you are carrying for personal use.

A prescription or GP letter does not make a medicine legal in Japan by itself. If you check only the brand name, you could miss a restricted ingredient, a controlled medicine, or a quantity or category that requires an import confirmation or advance permission.

Use this checklist before you travel:

• Confirm the active ingredient or ingredients on the box or patient leaflet.
• Check whether the product is prescription, over the counter, external use, or a controlled substance.
• Make sure the medicine is for your own personal use.
• Confirm that the amount you are carrying stays within the personal use limit, unless you plan to apply for approval (Yunyu Kakunin-sho).
• Check the official MHLW or Narcotics Control Department guidance that applies to your medicine.
• Recheck close to departure, because requirements and procedures can change.

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Check the active ingredient, not the brand name

Japanese authorities often classify medicines by ingredient or legal category, so familiar brand names can be misleading. A product sold over the counter abroad may still contain an ingredient that Japan treats as restricted or controlled.

Cold and sinus medicines are a good example: some contain ingredients subject to restrictions in Japan. If you are asking, “can I bring prescription drugs to Japan?” start with the ingredient list, not the shop name or the country where you bought it.

Watch for high-risk categories and ingredients

• Stimulants and stimulant raw materials: Some ADHD medicines and ingredients found in cold or sinus products can be subject to strict controls. Depending on the active ingredient, import may require advance permission or may be prohibited.
• Narcotics: Medicines containing controlled narcotic ingredients, including some strong opioid painkillers, are subject to separate rules and may require advance permission.
• Psychotropics: Some sleeping tablets or anxiety medicines may be allowed only within specified limits, while larger quantities or certain forms may require additional procedures.
• Prohibited substances: Some substances are banned regardless of a foreign prescription.
• Non exhaustive lists: Do not rely on social posts or forum lists alone, check the official Japanese guidance for the exact active ingredient and medicine category.

Know the quantity limits before you fly

The question “how much medicine can I bring to Japan” matters because a medicine can be lawful in principle but still needs extra paperwork once you go over the standard allowance.

In practice, a short holiday will often fall within the standard limits, while a one month trip can sit right on the prescription threshold. If you are relocating, you may need an import confirmation or other permission before travel, as well as a plan for obtaining further medication after you arrive.

Apply for the right approval before departure

There are two different issues to separate. One is a quantity issue, where an otherwise allowed medicine goes over the standard limit. The other is a controlled substance issue, where the medicine category itself triggers a separate process.

Do not leave either process until you reach the airport. Yunyu Kakunin-sho is the current name for the import confirmation previously commonly called Yakkan Shoumei, while controlled substances such as narcotics and stimulants’ raw materials are handled separately. The office responsible can also depend on where you enter Japan.

1. Identify the active ingredient and medicine category.

2. Check whether your issue is quantity, controlled substance status, or both.

3. Follow the correct official process before travel.

4. Wait for approval and keep the issued document with you.

5. Carry the medicine yourself and stay within the approved amount.

When you need a Yunyu Kakunin-sho

You generally need import confirmation when you are carrying more than the standard personal use amount, as well as in certain other situations involving pharmaceuticals or medical devices.

The current online route is Japan’s official Application for Import Confirmation system. The MHLW Q&A says applicants should usually attach a valid prescription or doctor’s note and a document showing arrival details such as the date, airport, flight number, and passenger name.

1. Create an account in the import confirmation system.

2. Select and complete the relevant application.

3. Upload the required documents.

4. Wait for the Yunyu Kakunin-sho to be issued, then keep it with you for customs clearance.

When you need Narcotics Control Department permission

• Narcotics or stimulants’ raw materials: These are subject to separate rules and require advance permission when you bring them into or out of Japan for personal medical use.
• Psychotropics: Check the specific substance and quantity. Many can be carried without NCD permission within stated limits, but different requirements apply above those limits or for injection forms.
• Allow enough time: The NCD says you should apply at least 14 days before travel. Last-minute applications may not be processed in time.
• Keep your medication and documentation with you: Where permission is required, you must personally carry the medicine and present the relevant certificate with the medicine to Japanese Customs.

Some substances cannot be brought into Japan even when they have been legally prescribed in another country. Advance permission is therefore not a workaround for a prohibited medicine: always check the exact active ingredient against current official guidance.

Pack the paperwork customs may ask for

• Keep medicines in their original packaging.
• Carry a copy of your prescription.
• Bring a doctor’s letter or medical certificate when it is relevant to your application.
• Save and print any approval, including a Yunyu Kakunin-sho or NCD certificate.
• Carry a simple medicine list with generic names, strengths, dose, and your schedule.
• Keep important medicines in your hand luggage where appropriate.
• Avoid unmarked pill boxes for anything that could raise a customs question.

All passengers entering Japan must make a customs declaration for their belongings. If you are carrying medicines subject to import restrictions or for which you have obtained prior confirmation or permission, you may also need to present the relevant documents during customs clearance.

Check the Japan Customs passenger clearance guidance before you travel and keep your medicine paperwork somewhere you can easily reach when you arrive.

Plan for life after arrival if you are moving to Japan

If this medication issue is part of a wider move to Japan, plan beyond the flight. Healthcare in Japan works well for many expats, but you generally cannot take a prescription issued by a foreign doctor to a Japanese pharmacy and expect it to be dispensed. Your usual medicine may also have a different name, formulation, or availability in Japan.

You may therefore need a local medical consultation sooner than expected. If you expect healthcare costs while getting established, compare private cover from Cigna and Allianz Care carefully, subject to policy terms, and check whether you will need to pay clinic or pharmacy costs upfront and claim reimbursement later.

If your local finances are still being set up, Wise international transfer and the Wise account can help you move money to Japan and spend in yen for everyday healthcare costs. Please note that there is a transaction limit of 1 million JPY for Balance transfers and spending.

Wise Payments Japan is licensed as a Type 1 & 2 Fund Transfer Service Provider registered with Kanto Local Finance Bureau. Wise is not a bank, and may not be suitable for all of your banking or financial needs in Japan.

Writer

Gary Buswell

Insider Tip

Some Japanese clinics accept walk-in patients, while others require or recommend appointments. Prescriptions may also be filled at a separate dispensing pharmacy, so identify a suitable clinic and nearby pharmacy before your current supply runs low.

Use this checklist if you are relocating:

✅ Book a local medical appointment before you are down to your last few weeks of medicine.

✅ Bring your medicine list, diagnosis summary, and dosing history.

✅ Check what your health insurance in Japan will cover, and what you may need to pay for yourself.

✅ Ask whether your medicine is available under a different local name.

✅ Know how to access emergency services in Japan if you run out of essential medicine or become seriously unwell.

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How to replace or refill medication in Japan

If you need to continue treatment after moving, you will generally need to consult a doctor in Japan rather than relying on your home country prescription. Bring a diagnosis summary, dosage details, medicine list, and any useful translated medical documents to make your treatment history easier to understand.

At your appointment, ask about local availability, likely costs, and whether you need specialist care. Planning this early can help you avoid trying to replace an essential medicine when your existing supply is already running low.

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Useful sources

(accessed 15 August 2026)

• MHLW: Information for those who are bringing medicines for personal use into Japan – Main official page for quantity limits and the basic personal import rules.
• MHLW Q&A for those who are importing medicines into Japan – Useful for practical scenarios, required documents, and contact guidance.
• MHLW Application for Import Confirmation – Official route for Yunyu Kakunin-sho and related import confirmation steps.
• Narcotics Control Department application guidance – Essential for narcotics, stimulants’ raw materials, psychotropics, and prohibited substances.
• Japan Customs passenger clearance guidance – Helpful for customs declaration wording and border procedures.