ChronoPillTraveling to Japan with medication
Japan applies some of the most closely watched medication import rules of any major destination. Several substances that are routine prescriptions elsewhere are regulated under Japan's Narcotics Control Act or Stimulants Control Act, and some require paperwork before you fly. Here is what to check, where the official answers are published, and who to ask.
Japan's own declared rules for travellers carrying controlled medicines, including carry limits and required documents, live in its official INCB filing (2014): read the filing (PDF). This page summarizes context around it; the filing and the national authorities it names are authoritative.
Substances worth checking before you pack
The table below combines two sources: the INCB international lists (which substances are controlled under the UN conventions) and ChronoPill's in-app travel reference (what it notes for Japan). It is a starting point for a conversation with your pharmacist, not a ruling.
| Active substance | International status (INCB) | Noted for Japan |
|---|---|---|
| Codeine | 1961 narcotic (Yellow List) | ChronoPill's travel reference notes regulation under the Narcotics Control Act, with an advance import permit (Yunyu Kakunin-sho) to request at least two weeks before travel. |
| Tramadol | Not on the INCB lists | Not internationally scheduled, but ChronoPill's travel reference notes regulation under the Narcotics Control Act with an advance import certificate. |
| Alprazolam | 1971 psychotropic (Green List) | ChronoPill's travel reference notes psychotropic import approval via the Ministry of Health, Labour and Welfare (Yunyu Kakunin-sho). |
| Diazepam | 1971 psychotropic (Green List) | ChronoPill's travel reference notes an advance import certificate requirement for psychotropics. |
| Modafinil | Not on the INCB lists | Not internationally scheduled, but ChronoPill's travel reference notes psychotropic status in Japan with advance import approval. |
| Methylphenidate | 1971 psychotropic (Green List) | ChronoPill's travel reference notes prohibition under the Stimulants Control Act. |
| Amphetamine-class stimulants | 1971 psychotropic (Green List) | ChronoPill's travel reference notes strict prohibition under the Stimulants Control Act. |
| Pseudoephedrine | 1988 precursor (Red List) | ChronoPill's travel reference notes designation under the Stimulants Control Act, effectively prohibited for import. Found in many cold remedies. |
| CBD products | Not on the INCB lists | ChronoPill's travel reference notes that products containing any THC are illegal in Japan, with strict enforcement. |
| Melatonin | Not on the INCB lists | ChronoPill's travel reference notes that melatonin is not approved as an over-the-counter supplement and supplement imports are restricted. |
International status: INCB Yellow List (64th edition), Green List (2026 edition), Red List, extracted 31 May 2026. Country notes: ChronoPill in-app travel reference, a hand-reviewed informational compilation last reviewed in August 2026; it is not an official source and can lag behind legal changes. The authoritative references are the country's INCB filing linked above and the national authorities it names.
The advance import certificate (Yunyu Kakunin-sho)
For several categories of medication, ChronoPill's travel reference notes that Japan operates an advance import confirmation procedure handled through the Ministry of Health, Labour and Welfare, commonly called Yunyu Kakunin-sho. Which medications and quantities require it, and the current application procedure, are defined by the Japanese authorities: verify them in Japan's INCB filing and directly with MHLW or the nearest Japanese consulate. The reference suggests starting at least two weeks before departure; official processing times can vary.
Checklist for Japan
- List the active substance (INN) of every medication you plan to carry, prescription and over-the-counter alike.
- Ask your pharmacist which of those substances are narcotics, psychotropics, or stimulant-related under Japanese law.
- Read Japan's official INCB filing (linked above) for declared carry rules and documentation.
- If any medication needs an advance import certificate (Yunyu Kakunin-sho), contact MHLW or the nearest Japanese consulate early: the in-app reference suggests at least two weeks before travel.
- Check cold remedies specifically: pseudoephedrine is noted as effectively prohibited for import.
- Keep everything in original packaging with your prescription, and carry your prescriber's contact details.
- For any doubt, the Japanese consulate or embassy in your country is the authoritative contact before departure.
How ChronoPill's Travel Mode helps
ChronoPill bundles the official medication databases of 7 countries (including Japan) on your iPhone: 500,000+ records, fully offline. When you set a destination, Travel Mode:
- Flags medications in your list whose active substance is internationally controlled, and names the substance
- Maps each medication to its local equivalent by active substance (INN), with the destination-language name
- Generates a pharmacist card you can hand over at any counter abroad
- Shifts your dose schedule to the destination time zone automatically
Travel alerts are informative only: they tell you which substance to verify and with whom (your pharmacist, the destination's consulate). They never tell you to skip a dose or leave a medication behind.
Frequently asked questions
Can I bring codeine into Japan?
Codeine is internationally controlled under the 1961 Single Convention (INCB Yellow List). ChronoPill's travel reference notes that Japan regulates it under the Narcotics Control Act and that an advance import permit (Yunyu Kakunin-sho) applies, requested at least two weeks before travel.
Whether your specific formulation and quantity require the permit is defined by the Japanese authorities: confirm with the Ministry of Health, Labour and Welfare or the nearest Japanese consulate, and ask your pharmacist to identify which of your medications contain codeine.
What is a Yunyu Kakunin-sho?
It is Japan's advance import confirmation certificate for bringing certain medications into the country, handled through the Ministry of Health, Labour and Welfare. ChronoPill's travel reference notes it for narcotic and psychotropic medications such as codeine, tramadol, alprazolam, and diazepam.
The current thresholds, forms, and processing times are set by the Japanese authorities: verify them in Japan's INCB filing and directly with MHLW or a Japanese consulate before you book.
Are ADHD medications restricted in Japan?
ChronoPill's travel reference notes methylphenidate as prohibited under Japan's Stimulants Control Act, and amphetamine-class stimulants as strictly prohibited. Both substance families are also internationally scheduled (INCB Green List).
If your treatment involves either, discuss your trip with your prescriber and contact the nearest Japanese consulate well before travel: they can state what is currently possible and under which procedure.
Is my cold medicine a problem in Japan?
It can be worth checking. Pseudoephedrine, a 1988 Convention precursor (INCB Red List), appears in many over-the-counter cold remedies, and ChronoPill's travel reference notes it as designated under Japan's Stimulants Control Act and effectively prohibited for import.
Ask your pharmacist to check the active ingredients of any cold or allergy product you plan to pack, and confirm with a Japanese consulate if one of them is flagged.
Other country guides
Sources
Every factual claim on this page traces to one of the sources below. INCB list membership was extracted from the editions named here on 31 May 2026.
- INCB filing for Japan (2014): official PDF
- Japan medication data in ChronoPill: 16,848 records from the official PMDA / MHLW sources.
- INCB, Yellow List, 64th edition (substances under the 1961 Single Convention on Narcotic Drugs): official PDF · INCB Yellow List page
- INCB, Green List, 2026 edition (substances under the 1971 Convention on Psychotropic Substances): official PDF · INCB Green List page
- INCB, Red List (precursors under the 1988 Convention, Tables I and II): official PDF · INCB Red List page
- INCB, Regulations by country for travellers carrying controlled medicines: country index (99 filings)
- ChronoPill in-app travel reference, last reviewed August 2026. Informational compilation, not an official source; where it is cited on this page, it is named explicitly.
ChronoPill is not a medical device and this page is not legal or medical advice. It is an informational summary of publicly available regulatory sources. Rules change, and the only authoritative answers come from the destination country's authorities. Before traveling, confirm every point that matters to you with your pharmacist and with the destination country's consulate or embassy.