Is Concerta Legal in Japan? Ritalin and Methylphenidate Rules for Travellers
Is Concerta legal in Japan? For most travellers carrying their own supply, yes, provided the amount and paperwork fit the rules. Concerta and Ritalin contain methylphenidate, which Japan classes as a Type 1 psychotropic (第1種向精神薬), not as a narcotic or a banned stimulant. That makes the rules very different from those for Adderall.
Quick answer
For non-injectable methylphenidate (Concerta, Ritalin and generics) that you carry yourself for your own treatment: at or below 2.16 g in total, you need no doctor certificate and no advance permission. Above 2.16 g, or for an injection, carry a doctor certificate. Separately, if you bring more than one month's supply, contact MHLW about Import Confirmation before you travel. Psychotropics cannot be posted. Adderall (amphetamine) is a different case and cannot be brought in. Check your exact product and quantity, because the rules can change.
Not sure whether your dose and trip length cross either threshold? Check the ingredient, strength, daily dose and total amount before you travel.
Check my medicationOn this page
Is Concerta legal in Japan? Why methylphenidate is a psychotropic
Concerta (extended-release) and Ritalin both contain methylphenidate. The Kanto-Shinetsu Regional Bureau of Health and Welfare lists methylphenidate as a Type 1 psychotropic 第1種向精神薬 in its table of amounts that travellers may carry, and the Narcotics Control Department (NCD) lists it among the psychotropics that need no permission.
Therefore, the border rules for Concerta and Ritalin are the rules for psychotropics, not the rules for narcotics or stimulants. For example, the advance application to the NCD, due two weeks before arrival or departure, applies to narcotics and stimulants' raw materials. For psychotropics the NCD page says to carry documents, with no application to the department.
Psychotropic does not mean banned. It means the medicine is subject to Japan's quantity and documentation rules. Adderall is a different case, because amphetamine cannot be imported at all.
Three checks before you bring Concerta or Ritalin to Japan
2.16 g of methylphenidate
For non-injectable forms at or below the table amount, no doctor certificate and no advance permission are needed.
Doctor certificate
Above 2.16 g, or for an injection, carry a certificate showing your condition, why the medicine is needed, and the medicines and quantities prescribed.
Contact MHLW
For more than one month's supply, the NCD asks you to contact MHLW ([email protected]) about Import Confirmation before you travel.
The checks are independent. As a result, a low dose over a long trip can stay under 2.16 g and still exceed one month, so work out both numbers before you book your flight. Our guide to Import Confirmation (yakkan shoumei) explains that process. Finally, psychotropics cannot be posted or sent by courier to Japan, so they must travel in your own luggage.
Is Concerta legal in Japan above 2.16 g? Worked examples
The table sets a total amount of active ingredient for each substance. Convert your supply into milligrams of methylphenidate, add up everything you carry, and compare the total with the table.
| Active ingredient | Common brands | Class | Table amount |
|---|---|---|---|
| Methylphenidate メチルフェニデート | Concerta, Ritalin | Type 1 psychotropic | 2.16 g |
| Modafinil モダフィニル | Provigil | Type 1 psychotropic | 6 g |
The next table shows how the two thresholds work together. The doses are for arithmetic only and are not dosing advice, so use the strength and daily dose printed on your own pharmacy label.
| Example | Total methylphenidate | Above 2.16 g? (certificate) | Over one month? (contact MHLW) |
|---|---|---|---|
| 54 mg a day for 30 days | 1,620 mg (1.62 g) | No | No |
| 72 mg a day for 20 days | 1,440 mg (1.44 g) | No | No |
| 54 mg a day for 60 days | 3,240 mg (3.24 g) | Yes | Yes |
| 18 mg a day for 90 days | 1,620 mg (1.62 g) | No | Yes |
Count carefully near the limit. Add spare tablets to the total before you compare it with 2.16 g: a higher dose or a longer trip can cross the amount quickly, as the third example shows. MHLW's personal-import page measures one month by the dosage and administration on the label, so keep the pharmacy label on the packaging.
Amounts come from the Kanto-Shinetsu table (page updated 28 February 2025) and the NCD table, both reviewed on 4 October 2026. Tables can change, so check the current NCD table before you travel.
What to carry when you bring Concerta to Japan
- Medicine in its original pharmacy-labelled packaging, showing your name and the dose
- A prescription or medication list showing the active ingredient (methylphenidate), strength and daily dose
- Your total quantity, worked out in milligrams of methylphenidate
- A doctor certificate if you exceed 2.16 g or carry an injection
- Confirmation from MHLW if you are bringing more than one month's supply
The NCD says the certificate should identify your disease, the necessity of the medicine for your treatment, and the names and quantities of the psychotropics prescribed. If your documents are in a language other than English or Japanese, a medical translation may help the officer read them.
Concerta vs Ritalin: same border rule, different position in Japanese clinics
At the border, both brands follow the methylphenidate rules above. However, they sit differently inside Japan's prescribing system, which matters if you plan to stay.
| Medicine | At the border | Japanese label and prescribing |
|---|---|---|
| Concerta | Methylphenidate rules: 2.16 g, certificate above it, MHLW contact over one month | The label (revised June 2026) lists AD/HD. Prescribing runs through a registration system: the institution needs a registered doctor, and the pharmacist checks the registration of the doctor, institution and patient before dispensing. |
| Ritalin | Same methylphenidate rules | The label (revised September 2025) lists only narcolepsy ナルコレプシー. AD/HD is not a listed indication. |
As a result, you should not assume that a Japanese doctor can simply continue either brand. A doctor in Japan decides what to prescribe.
Is Concerta legal in Japan compared with Vyvanse and Adderall?
Japan's rule follows the active ingredient, not the brand. The three best-known ADHD medicines therefore fall into three different categories.
| Category | Examples | What travellers need |
|---|---|---|
| Psychotropics | Methylphenidate (Concerta, Ritalin), modafinil | Table amount (2.16 g for methylphenidate), a doctor certificate above it, and an MHLW check over one month. No application to the NCD. |
| Stimulants' raw materials | Lisdexamfetamine (Vyvanse) | Advance permission, requested two weeks before arrival or departure. |
| Stimulants | Amphetamine (Adderall), methamphetamine | Cannot be imported by individual travellers, even with a prescription. |
This article covers methylphenidate only. Other ADHD ingredients, such as dexmethylphenidate, atomoxetine and guanfacine, need their own check. See our overview of controlled medicines in Japan for each category.
If you will stay in Japan for longer than a month
For a stay of more than one month, start with the MHLW contact described above. In addition, plan how your treatment will continue, because a Japanese doctor decides what to prescribe and is not obliged to match your current regimen.
- Concerta can be prescribed only through the registration system, so not every clinic can start or continue it.
- A first appointment can take time. We have no reliable waiting-time figures, so plan for weeks rather than days.
- Bring an English letter from your prescriber with your diagnosis, the active ingredient, the dose and how long you have taken it.
Next, look for a doctor who can communicate in English, or book an interpreter for the visit.
Do not stop or change your ADHD medicine because of travel paperwork. Discuss any gap, change or timing with your prescriber well before you travel.
Want your exact medicine and quantity checked?
We review the ingredient, strength, dosage form and total quantity against the current published NCD and MHLW guidance and explain the likely next step, including whether you need a doctor certificate or should contact MHLW about Import Confirmation.
- Price confirmed before work begins
- Reply within 2–3 business days (or sooner)
- Secure document process
MedicTranslate is not a healthcare provider or customs authority. We do not give medical advice or guarantee customs approval.
Frequently asked questions
Is Concerta legal in Japan?
Yes, for most travellers carrying their own supply within the limits. Concerta contains methylphenidate, which Japan treats as a Type 1 psychotropic, not as a banned stimulant. For non-injectable tablets at or below 2.16 g of methylphenidate in total, no doctor certificate and no advance permission are needed. Above 2.16 g, or for an injection, carry a doctor certificate. Separately, if you bring more than one month's supply, contact MHLW about Import Confirmation before you travel.
Is Ritalin banned in Japan?
No. Ritalin also contains methylphenidate, so the same traveller rules apply as for Concerta. However, Ritalin's Japanese label lists only narcolepsy as an indication, which matters for treatment in Japan but not for the amount you may carry.
Is methylphenidate banned in Japan?
No. Methylphenidate is controlled as a Type 1 psychotropic and is allowed for personal medical use within the rules. Amphetamine, the ingredient in Adderall, is different: it is a stimulant and cannot be imported by individual travellers.
Do I need advance permission from the Narcotics Control Department for Concerta?
No. The Narcotics Control Department says psychotropics need documents but no application to the department. The advance application, due two weeks before arrival or departure, applies to narcotics and stimulants' raw materials such as lisdexamfetamine (Vyvanse).
How much Concerta can I bring to Japan?
The table amount is 2.16 g of methylphenidate in total. As an illustration only, 54 mg a day for 30 days is 1.62 g, which is below the table amount and within one month. The same dose for 60 days is 3.24 g, which is above the table amount and more than one month, so you would need a doctor certificate and should contact MHLW before travel.
Can I post Concerta or Ritalin to Japan?
No. MHLW guidance for people importing medicines states that psychotropics, narcotics and stimulants' raw materials cannot be sent to Japan. Carry them yourself in your luggage under the traveller rules.
Can I bring Adderall or Vyvanse instead?
Adderall cannot be brought in, because amphetamine is a stimulant under Japanese law. Vyvanse (lisdexamfetamine) is a stimulants' raw material and can be brought in only with advance permission from the Narcotics Control Department, requested at least two weeks before travel.
Can MedicTranslate check whether my quantity is within the limits?
Yes. Our from US$59 medication assessment reviews your ingredient, strength, dosage form and quantity against the published NCD and MHLW guidance and explains the likely next step. We do not give medical advice or guarantee customs approval; the final decision rests with the Japanese authorities.
This article provides general information reviewed on 4 October 2026. It is not medical, pharmaceutical or legal advice. Psychotropic tables, classifications and import procedures change. Confirm current requirements with the Narcotics Control Department and MHLW before you travel, and do not stop or change ADHD medicine without advice from your doctor. MedicTranslate provides translation and coordination services.
- Narcotics Control Department: Procedures for import/export of controlled drugs by carrying
- Narcotics Control Department: Carrying narcotics, psychotropics and stimulants' raw materials (Japanese)
- Narcotics Control Department: Psychotropic quantity table (PDF)
- Kanto-Shinetsu Regional Bureau of Health and Welfare: Psychotropic carrying limits (Japanese)
- MHLW: Personal import of medicines
- MHLW: Q&A for those importing medicines into Japan (PDF)
- PMDA: Concerta tablets package insert (revised June 2026)
- PMDA: Ritalin tablets 10 mg package insert (revised September 2025)