What do people get wrong about bringing medicine into Japan?
This answer is a draft. It stays unpublished until legal review and source verification are complete.
This is the practical question with the highest stakes: getting it wrong can mean confiscation at the airport or, for certain ingredients, a criminal matter. Much online advice is outdated or simply guesses.
The rules in outline (Ministry of Health, Labour and Welfare)
| Category | Allowed without paperwork | Above that |
|---|---|---|
| Prescription medicine | Up to 1 month's supply | Import Confirmation (Yunyu Kakunin-sho, formerly Yakkan Shoumei) required in advance |
| Over-the-counter medicine | Up to 2 months' supply | Import Confirmation |
| External-use products (creams, drops) | Up to 24 units per product | Import Confirmation |
| Injectables (e.g. insulin pens, EpiPen) | Up to 1 month, pre-filled syringes or self-injection kits only, with prescription | Import Confirmation (also needed for any syringes carried without the medicine) |
- Narcotics (e.g. codeine, morphine, oxycodone, regardless of amount): a separate permit from one of the eight Regional Bureaus of Health and Welfare is needed before travel — apply at least two weeks ahead. Sleep medicines and other psychotropics are a different category with their own quantity limits.
- Stimulants: medicines containing amphetamine, methamphetamine, or dextroamphetamine (e.g. Adderall) are prohibited and cannot be brought in with any paperwork. Methylphenidate (Ritalin, Concerta) is a controlled psychotropic, not a narcotic: up to a 30-day supply (max 2.16 g total) may be brought in with a doctor's letter or prescription and no permit; more than that needs an Import Confirmation applied for in advance.
- Pseudoephedrine: products containing more than 10% pseudoephedrine are treated as stimulant raw materials and are prohibited. Many Western decongestants fall on the wrong side.
[Verify] Confirm quantities and the current procedure name ("Import Confirmation", formerly Yakkan Shoumei) with the MHLW English page before publication. This area changes and the consequences of an error are severe.
Misunderstanding 1｜A doctor's letter covers everything
A letter is useful evidence but does not replace the Import Confirmation for quantities above the limit, or the narcotics permit for controlled substances.
Misunderstanding 2｜Anything legal at home is legal here
Several ADHD medicines and some decongestants are prohibited or controlled in Japan regardless of your prescription. Check the ingredient, not the brand.
Misunderstanding 3｜Medicines can be posted ahead
Mailing medicine to yourself in Japan is import and subject to the same rules — often stricter, because customs handles it without you present.
Misunderstanding 4｜Keep pills in a pill organiser to save space
Customs officers need to identify the medicine. Keep the original packaging and prescription label; carry the doctor's letter for anything unusual.
Misunderstanding 5｜You can buy the same thing in Japan
Many common medicines are sold in different strengths or not at all (for example, some hormonal contraceptives require a prescription and consultation). Bring what you need within the limits.
---
Sources
- Ministry of Health, Labour and Welfare — Bringing medicines for personal use into Japan (English)
https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/kenkou_iryou/iyakuhin/kojinyunyu/topics/tp010401-1_00001.html (application portal: https://impconf.mhlw.go.jp/)
- Ministry of Health, Labour and Welfare — Import Confirmation application (Yakkan Shoumei)
https://www.mhlw.go.jp/english/policy/health-medical/pharmaceuticals/dl/01.pdf
- Narcotics Control Department — Bringing narcotics into Japan
https://www.ncd.mhlw.go.jp/en/application2.html
- Japan Customs — Prohibited and restricted items
https://www.customs.go.jp/english/summary/prohibit.htm
⚠️ Editorial note: the source URLs above were identified by search. Our working environment cannot reach go.jp domains, so the contents have not been checked against the text. Verify every source before publication and record who checked it and when.
About this article
What we share here are ideas and everyday practices passed down among people living in Japan, together with general information drawn from public sources. They are not official recommendations, and they are not professional instruction. Practices vary between households and regions.
This is general information. Results vary from person to person and depend on your own conditions and surroundings.
Please decide for yourself, using your own judgement, whether any of this suits your situation. We cannot accept responsibility for any damage, loss or injury arising from following this article.
Rules and procedures change. Please confirm the latest official information before you act.
Sources
- https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/kenkou_iryou/iyakuhin/kojinyunyu/topics/tp010401-1_00001.html
- https://impconf.mhlw.go.jp/
- https://www.mhlw.go.jp/english/policy/health-medical/pharmaceuticals/dl/01.pdf
- https://www.ncd.mhlw.go.jp/en/application2.html
- https://www.customs.go.jp/english/summary/prohibit.htm
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