Concerta in Japan: bringing it in, and getting it prescribed here

By Natsuko Shibata, pharmacist licensed in Japan · Updated 2026-09-25

The short version

  • Bringing it in: methylphenidate is a psychotropic in Japan, not a narcotic. No permit is needed. Up to 2.16 g total and up to one month's supply, you carry it like any other prescription medicine. Above 2.16 g, you carry a doctor's certificate. Above one month, you need an Import Confirmation.
  • Getting it here: Concerta is approved for adult ADHD in Japan, but it can only be prescribed by doctors registered under a national system, dispensed by registered pharmacies, to registered patients. There is no public list of registered doctors.
  • Supply: Concerta has been on limited shipment in Japan since September 2025, and the shortage was still being managed by the Ministry in mid-2026. Plan for that.

This page is for people who take Concerta (or Ritalin) now and are coming to Japan. For the wider rules, see Bringing your medication to Japan. For Adderall and Vyvanse, which are handled differently, see Can I bring Adderall to Japan? and Can I bring Vyvanse to Japan?.

Bringing Concerta into Japan

Methylphenidate is a Class 1 psychotropic under Japan's Narcotics and Psychotropics Control Law. That sounds severe, but for a traveler it means less paperwork than Vyvanse, not more.

The 2.16 g line

You can carry up to 2.16 g of methylphenidate in total without any documents. The figure is the ingredient, not the number of tablets, so work it out from your dose:

  • 36 mg a day × 30 days = 1.08 g
  • 54 mg a day × 30 days = 1.62 g
  • 72 mg a day × 30 days = 2.16 g, exactly the line

Above 2.16 g, carry a certificate from your prescribing doctor stating your name, your diagnosis, why the medicine is needed, and the product and quantity. A copy of your prescription is the usual form. No application is needed and nothing has to be sent in advance.

The same rule covers Ritalin, dexmethylphenidate (Focalin) and generic methylphenidate. Dexmethylphenidate has its own entry in Japan's list, so check the ingredient name on your label. The same structure applies to benzodiazepines; see Can I bring Xanax to Japan?.

The one-month line

Separate from the 2.16 g rule, Japan's general import rules allow one month's supply of any prescription medicine without paperwork. If you're bringing more, you need an Import Confirmation (Yunyu Kakunin-sho) from the regional health bureau, applied for online before you travel. Injectable psychotropics need one at any quantity, but that doesn't apply to Concerta.

For someone moving to Japan with three months of Concerta at 54 mg, that means: a doctor's certificate (you're over 2.16 g) and an Import Confirmation (you're over one month). Both are described in the main guide.

Carrying it

  • Keep it in the original packaging with the pharmacy label.
  • Carry it yourself, in hand luggage. Medicines posted to you fall under different, stricter rules.
  • Keep the certificate and any Import Confirmation with the medicine.

Getting Concerta prescribed in Japan

This is the part most people underestimate.

The registration system

Since 2020, Concerta (and Vyvanse) in Japan run through the ADHD Proper Distribution Management System (ADHD適正流通管理システム). It works like this:

  • Doctors must be registered, and registration requires training in ADHD diagnosis and treatment. Not every psychiatrist is registered.
  • Patients are registered by their doctor and receive a patient card with an ID.
  • Pharmacies must also be registered, and the pharmacist checks your card and photo ID before dispensing. A pharmacy that isn't registered can't fill the prescription.

Losing the card is a problem. The ID is tied to the registering clinic, and getting it back from a clinic you no longer attend can be slow. Photograph the card when you get it.

There is no public list of registered doctors

The system's search for registered clinics is only available to doctors logged into it. We don't have a list, and we won't publish one: doctors haven't agreed to be listed by us, and the register changes.

What works is asking directly. When you contact a clinic, ask whether they have a doctor registered for Concerta under the ADHD distribution system. In Japanese:

コンサータの処方ができる登録医の先生はいらっしゃいますか？ (Konsāta no shohō ga dekiru tōroku-i no sensei wa irasshaimasu ka?)

Clinic reception staff know exactly what this means. A "no" saves you an appointment.

A diagnosis from abroad is a starting point, not a pass

A Japanese doctor decides whether to prescribe, and how. Some will work from your existing records; some will want to assess you themselves. Bring an English letter from your prescriber with the diagnosis, the medicine, the dose and how long you have taken it, plus any assessment reports you have. Without them, expect the process to be longer.

Prescriptions are short

Methylphenidate prescriptions in Japan are limited to 30 days at a time, so you will be seeing the doctor monthly. Prescriptions are valid for four days, including the day of issue, so fill them promptly.

The shortage

Concerta has been on limited shipment in Japan since September 2025. In May 2026 the Ministry of Health asked clinics and pharmacies not to over-order, and in July 2026 it allowed registered pharmacies to transfer stock between themselves as a temporary measure, something normally prohibited. The same notices asked clinics to consider alternatives where medically possible.

We can't tell you what this will look like on the day you need a refill. What it means for planning is that a Japanese doctor may not be able to keep you on Concerta at your current dose, even if everything else goes smoothly.

What's approved for adults in Japan

Methylphenidate (Concerta), atomoxetine (Strattera) and guanfacine (Intuniv) are approved for adult ADHD in Japan. Which, if any, a doctor here uses is their decision. There is no amphetamine product, and Vyvanse is approved only for children.

Before you travel

  • Work out your total methylphenidate in grams and compare it with 2.16 g.
  • Count your days of supply against the one-month line. Over it, apply for the Import Confirmation online well before you fly.
  • Get the doctor's certificate or a prescription copy, in English.
  • Bring your diagnosis records.
  • Assume finding a registered doctor and getting a first appointment will take weeks. We don't have reliable waiting-time figures, and the shortage makes them worse.

The Japan Medication Entry Check

If Concerta is one of several medicines you're bringing, the Japan Medication Entry Check is a written review of your whole list by a licensed pharmacist in Japan. We go through each item, tell you which category it falls into and what paperwork it needs, with links to the official pages, and explain how that category of medicine is generally handled here. You file the Import Confirmation yourself; we don't file it for you. It isn't an official ruling, and it isn't a decision about your treatment. The price is US$200, with additional items at US$20 each.

See the Entry Check — US$200

Official sources

I am a pharmacist. I cannot diagnose you or tell you to stop a medicine your doctor has prescribed.