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Bringing Medication to Japan (2026): Essential Rules, Prohibited Drugs & Approval Process
- By Zen Gaijin
- Jan 4
- 8 min read
Updated: 10 hours ago
Japan's medication rules are based on active ingredients, not brand names — and mistakes have serious consequences. This guide walks you through the process step by step, with official links throughout so you can always verify current requirements with Japan's Ministry of Health, Labour, and Welfare (MHLW).
⚠️ Important: Do not try to get approval upon arrival. Customs officials do not grant on-the-spot exceptions.
Here We Go: Your Step-by-Step Guide (Updated for 2026)
Section 1. Find the Active Ingredients in Your Medication
Active ingredients — the "working parts" of a medicine — are the basis for Japan's import rules, so before doing anything else, identify them for every medication you plan to bring, including over-the-counter (OTC) drugs.
How to find Active Ingredients?
In many countries (including the U.S., Australia, Canada, the U.K., and the EU) OTC medications list active ingredients on the packaging, often under "Drug Facts."
For prescription medications or OTC products that don't list ingredients, ask your pharmacist or doctor.
Section 2. Look up Each Active Ingredient on Japan's Controlled Substance List
Search for each Active Ingredient on the MHLW Controlled Substances List (hereafter, "the List"), checking the Category and Prohibited Substance columns. Each ingredient will fall into one of three outcomes:
Prohibited
Controlled
Not listed
Note for GLP-1 users: Medications like Ozempic, Wegovy, and Mounjaro don’t always fit neatly into these categories and can require additional review. Before you travel, see our detailed guidance here.
Prohibited Active Ingredients
If the Prohibited Substance column is checked, the medication is not allowed in Japan under any circumstances.
➡️ Example:
Like many ADHD and allergy medications, Adderall contains the active ingredient amphetamine--a prohibited substance even with a prescription.
Japan has zero tolerance for prohibited substances. These include, among others:
Heroin
Opium, in all forms
Methamphetamine/amphetamine
Cannabis
Methaqualone
Leave any of these at home and talk to your doctor about alternatives before you travel.
🚫 Note for recreational marijuana users: Cannabis is prohibited in Japan — possession or import, including edibles or vape products, all are illegal regardless of legality at home.
Section 3. If the Active Ingredients Are Controlled
If the ingredient has a letter code in the Category column, it is a Controlled Substance. This means it may be brought into Japan, but only if you follow specific rules and, in many cases, obtain advance permission — known in Japan as a Yakkan Shoumei, or Import Certificate.
The MHLW Controlled Substances List uses letter codes to classify substances (active ingredients):
P = Psychotropic
SRM = Stimulants' Raw Material
N = Narcotic
C/ O = Cannabis / Opium (both prohibited)
If your active ingredient is on the List, note which letter code applies to your medication.
What If My Medication's Active Ingredient has a Letter Code P?
If your medication is marked with "P", you must take one additional step: consult Table ("List of Psychotropics") to determine whether you need advance approval and how much medication you are allowed to bring.
Understanding the Table List of Psychotropics
For Psychotropics, Table assigns specific quantity limits for each ingredient, stated in grams (g) or milligrams (mg):
What If My Medication's Active Ingredient Has A Letter Code SRM?
Substances listed as SRM fall under the "Stimulants Control Law" and all require advance permission to bring into Japan.
➡️ Example: Allegra-D is a common OTC allergy medication containing Pseudoephedrine, an SRM active ingredient. It requires advance approval to bring into Japan.
An important distinction: Regular Allegra (fexofenadine alone) does not contain pseudoephedrine and does not require advance approval within a one-month supply. It is only the -D formulation — which adds pseudoephedrine as a nasal decongestant — that triggers the SRM requirement. The same distinction applies to Claritin vs. Claritin-D, and Zyrtec vs. Zyrtec-D. When in doubt, check the active ingredients list on the packaging, not just the brand name.
What If My Medication's Active Ingredients has a Letter Code N?
If a medication's active ingredient is marked with an "N," it is classified as a narcotic. You must apply for an "import certificate" before you enter Japan.
Possession of narcotics without approval is illegal, even with a foreign prescription, and may result in arrest.
What If My Medication is NOT on the List?
If your medications are not controlled or prohibited, you may bring them into Japan without applying for an import certificate, subject to quantity limits. Skip ahead to Section 5, below, Bringing Non-Restricted Medications.
Section 4. How to Apply for Permission: The "Import Certificate" (Yakkan Shoumei)
The application process takes time and requires coordination with your doctor. Here is why it is worth every step.
In 2019, an American woman was detained at Narita Airport after customs officials discovered she was carrying Vicodin, a prescription pain medication that requires special permission in Japan. Because no prior approval had been obtained, the case escalated beyond an administrative customs issue, and she was arrested and held in jail for 23 days (not at the airport) while the matter was resolved. Legal fees and penalties reportedly exceeded $600,000.
This case illustrates how strictly Japan enforces its medication import laws—even for commonly prescribed drugs.
Start Early
Yakkan Shoumei (Import Certificate) applications must be submitted at least 14 days before arrival. Start earlier if possible to allow time for questions or additional document requests.
Failure to obtain prior approval may result in denied entry.
Applying for Psychotropic "P" Medication
If you intend to carry psychotropics in an amount greater than indicated in Table List of Psychotropics or if the medications are in injection form, you must submit a Medical Certificate from your prescribing doctor that includes:
Your name
Name of your disease
Necessity of medicine for your treatment
A list of your medicine, including dose and strength
Signature of the prescribing doctor
Date of issue of medical certificate
📧 Email your request to bring the medication, the amount you intend to bring, and the Medical Certificate to: yakkan@mhlw.go.jp.
Applying for "SRM" or "N" Medication
The application process for medications with these two designations is quite similar, so they are addressed together here.
Scroll down on the Application page to a heading: Required Documents for Application. Beneath that you will see the links to the Applications. The links go straight to MHLW's own site — clicking one downloads the official form directly to your device as a Word file. That's simply how MHLW distributes these forms.
Along with either application, you must submit:
A Medical certificate from the doctor who prescribed your medicine. It must include:
Your name
Your current address
Necessity of the medication for your treatment — the specific medical reason you take it. General statements such as “personal use,” “medical condition,” or “travel” are not acceptable.
A list of your medicines, including doses and strength
The signature of your prescribing doctor
The date of issue of medical certificate (issue date must be within 3 months of travel)
Please note:
If the Medical Certificate is electronically signed, indicate that in your e-mail.
3. Photo of the medication packaging. Be sure that this is the same package (bottle or box) that you bring to Japan. Customs will examine the item and it needs to be the same as appeared in your application.
Where to Send Your Application and Documents?
Submit your application and supporting documentation (e.g., Medical Certificate, Medicine Packaging Photo) to the MHLW Regional Bureau that corresponds to your airport of arrival.
Section 5. Bringing Non-Restricted Medications
Once you’ve confirmed that your medication’s active ingredients are not listed as prohibited or controlled, you may bring them into Japan without applying for an "import certificate" — but within quantity limits.
➡️Example:
Loratadine (Claritin)
Loratadine is a common antihistamine used to treat hay fever and hives. It is not prohibited or controlled and is available OTC in Japan.
Quantity Limits
Even for non-restricted medications, Japan enforces quantity limits per MHLW guidelines:
Up to two months’ supply for topical agents (creams, patches, etc.)
Reasonable amounts of OTC supplements (vitamins or probiotics)
For quantities exceeding the limits, you still may need to apply for an "Import Certificate" and receive it before you leave home.
Special Case: Injectables and Insulin
You may bring up to a one-month supply of injectable medications (such as pre-filled insulin syringes) without an import permit.
However, empty syringes not connected to a prescribed medication, such as insulin, generally require an import certificate.
Diabetics should see the related Zen Gaijin post for detailed guidance.
Additional Resources
🔗 See Japan's Ministry of Health: Information for those who are bringing medicines for personal use into Japan
Frequently Asked Question - FAQs
What's the full list of medications banned or restricted in Japan?
The MHLW Controlled Substances List is that list — scan down the Prohibited Substance column, and every row with a checkmark is a banned active ingredient. That's the complete, authoritative list. The catch is that it's organized by active ingredient, not brand name, so "is Xanax banned" isn't something you can search the PDF for directly — you look up alprazolam (Xanax's active ingredient) instead.
Sections 1–2 above walk through finding your medication's active ingredient so you can check it against that column yourself.
Is Zyrtec (cetirizine) allowed in Japan?
Yes — cetirizine, the active ingredient in Zyrtec, is not on Japan's prohibited or controlled list, so it falls under the non-restricted category, subject to the same one-month-supply limit that applies to oral medications. See Section 5, above.
Can I bring Tums or other antacids to Japan?
Standard antacids like Tums (calcium carbonate) aren't controlled or prohibited — they fall under the non-restricted medications, subject to that same one-month-supply limit for oral medications. See Section 5, above.
What is a "Yakkan Shoumei"?
Yakkan Shoumei (薬監証明) is the Japanese term for the Import Certificate described in Section 4 — the advance approval required for Psychotropic, SRM, and Narcotic medications. You may see it referred to either way in Japanese government materials or by pharmacies and travel clinics.
Is Ritalin or Concerta allowed in Japan?
Ritalin and Concerta contain methylphenidate, a different active ingredient from Adderall's amphetamine — and it's classified separately in Japan. Regulations are updated periodically, so the MHLW List is the only source that's always current: look up methylphenidate there directly to see its category and whether an Import Certificate is required before you travel.
Can I bring Ozempic, Wegovy, or Mounjaro to Japan?
GLP-1 medications are a fast-moving area — Japan is actively reconsidering how these drugs are classified and regulated, so guidance here can shift with little notice. Our dedicated GLP-1 travel guide points you to the best resources for checking what's currently allowed before you travel.
Already thinking through the details of your return trip? Our guide Your Second Trip to Japan: 13 Things Experienced Travelers Do Differently covers the questions that matter most once you've moved past the basics.
About This Guide. This post reflects our interpretation of Japan’s medication import rules based on official guidance from the Ministry of Health, Labour and Welfare (MHLW). Regulations may change, and individual circumstances can differ.
This content is provided for informational purposes only and does not constitute legal or medical advice.
© 2026 Zen Gaijin. This content is original research and may not be reproduced without permission.