Declaring Medication at Japan Customs: What to Expect
What actually happens when you land with medication - the channel, the desk, and the paperwork that keeps it moving.
You're packing for Tokyo with months of blood pressure medication, an EpiPen, or a controlled ADHD prescription, and you're not sure whether you can just walk through customs with it. Declaring medication at Japan customs is straightforward once you know the mechanics: what goes in your carry-on, which lane to use, and which paper to have ready. This covers the airport moment itself - what to carry, when a certificate is required, and what happens without one.
The short answer
Keep all medication in your hand luggage, never checked. If your supply is within Japan's personal-import allowances, or you've secured a certificate for anything above them, go through the red channel and declare rather than walk the green lane. Present your certificate, if you have one, with your prescription and a doctor's letter. Carry that paperwork even within the allowance - officers can and do ask. Skip it, and your medication can be held or confiscated; if it's on Japan's banned list, the consequences go well beyond a confiscated bottle.
Declaring medication at Japan customs: the channels and the allowances
Declare restricted goods rather than hope customs doesn't ask.Japan Customs runs a two-channel system: green for nothing to declare, red for anything that needs one. Medication above set thresholds counts as declarable, so a large supply, an injectable, or anything psychiatric or narcotic-adjacent belongs in the red lane, not the green one.
| Category | Allowed without a certificate |
|---|---|
| Prescription drugs | Up to a 1-month supply |
| OTC drugs, quasi-drugs, vitamins | Up to a 2-month supply |
| External-use items | Up to 24 per item |
| Injectable drugs with syringe | Up to a 1-month supply (pre-filled syringe or self-injection kit only) |
| Cosmetics | Up to 24 per item |
| Disposable contact lenses | Up to a 2-month supply |
These figures come from MHLW's personal import guidance. Even inside them, carry a copy of your prescription and doctor's letter - the allowance covers quantity, not legitimacy. See the health guide for the full breakdown.
When you need the import certificate
Yunyu Kakunin-sho, still widely called Yakkan Shoumei.Exceed those allowances - or you're bringing an injectable beyond the limit (insulin, an EpiPen, CPAP supplies), a psychotropic above its threshold, more than a month's supply of one, or an injectable psychotropic - and you need the 輸入確認書 (Yunyu Kakunin-sho), still commonly called 薬監証明 (Yakkan Shoumei), issued by MHLW.
- Apply online at least 14 days ahead via MHLW's portal (impconf.mhlw.go.jp), the default route since 1 July 2025.
- Processing takes about 2-3 business days once complete - allow slack around Golden Week, Obon, and New Year.
- Narita, Haneda, or another Kanto port: Kanto-Shinetsu Regional Bureau (yakkan@mhlw.go.jp, +81-48-740-0800).
- Kansai, Chubu Centrair, Fukuoka, or Naha: Kinki Bureau (kiyakuji@mhlw.go.jp).
Narcotics and stimulant-adjacent drugs run a stricter track
No allowance applies to these regardless of quantity.Some medications skip the allowance system entirely. Morphine, fentanyl, oxycodone, codeine, tapentadol, and lisdexamfetamine (Vyvanse) need advance Narcotics Control Department permission regardless of quantity, no exemption threshold. They can't be mailed or carried by someone else - the application needs a medical certificate issued within three months, a dosed drug list, doctor's signature, and packaging photos, filed 14 days ahead to the NCD office for your arrival airport.
Some medications simply can't come in
No certificate, no prescription, no exception.What to do before you fly
- Sort your medication against the allowance table.
Within a 1-month prescription or 2-month OTC supply, with the injectable exception above, you generally don't need a certificate.
- Apply for a certificate if you're over the limit.
At least 14 days ahead through the MHLW portal - more around a holiday period.
- For narcotics or Vyvanse, start the NCD process instead.
Certificate, drug list, doctor's signature, packaging photos, filed 14 days out to the NCD office for your arrival airport.
- Pack everything in your hand luggage.
Never check restricted medication, and never let someone else carry it - it travels with you personally.
- Go through the red channel on arrival.
Present your certificate, if you have one, with your prescription and doctor letter to the customs officer.
Once you're through, the next question is usually where to fill an ongoing prescription - a foreign one can't be filled here, so see running out of medication in Japan and finding an English-speaking doctor. Sick before you've found one? Getting sick in Tokyo covers your options. To fill something locally, use the finder for pharmacies with verified English support near you.
Frequently asked questions
Quick answers to the questions people actually searchDo I have to declare medication when entering Japan?
Declare it if your supply is above the personal-import allowance, includes an injectable beyond the pre-filled syringe exception, or involves a controlled psychotropic or narcotic. Even within the allowance, carry your prescription and doctor's letter and be ready to speak up.
What is the red channel at Japanese airports?
It's the customs lane for travelers who have something to declare, as opposed to the green 'nothing to declare' lane. Carrying an import certificate, an NCD-permitted controlled substance, or medication above the standard allowance means the red channel, where you present your documents.
What happens if my medication gets confiscated at Japan customs?
Undeclared or undocumented medication can be held for inspection or confiscated on the spot. If it's on Japan's banned list - like Adderall or any THC product - the outcome is far more serious: detention, arrest, prosecution, or deportation, not just a lost bottle.
Can I bring Adderall or Vyvanse into Japan?
Adderall (amphetamine salts) and Dexedrine are banned outright as Stimulants, no prescription exception. Vyvanse (lisdexamfetamine) is approved but tightly restricted - advance Narcotics Control Department permission is required regardless of quantity, and you must carry it personally.
How far in advance do I need to apply for a Yakkan Shoumei?
Apply at least 14 days before you arrive, through MHLW's online portal. Processing typically takes about 2-3 business days once your application is complete, but build in extra time around Golden Week, Obon, and New Year.
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