Is Adderall Legal in Japan?

No. Adderall is illegal in Japan and cannot be brought into the country under any circumstances. Amphetamines are banned as stimulants under Japan's Stimulants Control Law, and a foreign prescription makes no difference. Possession is a serious criminal offence. Travellers who need ADHD medication should ask about permitted alternatives like Vyvanse.

Key restrictions

Adderall (amphetamine/dextroamphetamine) is completely prohibited — zero quantity allowed.

A valid foreign prescription or doctor's letter provides no exemption.

The Yunyu Kakunin-sho import certificate cannot be issued for amphetamines.

Possession can mean arrest, detention, and prosecution under the Stimulants Control Law.

Vyvanse (lisdexamfetamine) is a permitted alternative with advance permission from the Narcotics Control Department.

Why this matters

This is the single most important medicine rule for travellers to Japan, and the one with the harshest consequences for getting it wrong. Adderall is a routine, legally prescribed ADHD medication in the United States and many other countries. In Japan it is classified as a stimulant drug — the same legal category as methamphetamine — and the law makes no distinction between a patient with a prescription and anyone else carrying it.

Travellers are arrested for this. It is not a fine-and-confiscate situation.

Restrictions

There is no permitted quantity and no approval route:

Zero tolerance. Amphetamine and dextroamphetamine, the active ingredients in Adderall and Mydayis, are banned under the Stimulants Control Law.
Prescriptions don't help. No doctor's letter, prescription, or medical documentation creates an exemption.
No import certificate exists. The Yunyu Kakunin-sho system that covers other medicines cannot be used for amphetamines, and the Narcotics Control Department will not issue a permit for them.
Mailing it is also illegal. Having Adderall shipped to you in Japan is treated as drug smuggling.

The workable alternatives: ask your doctor about switching to Vyvanse (lisdexamfetamine), which Japan permits with advance permission from the Narcotics Control Department, or arrange to see a doctor in Japan who can prescribe a locally approved ADHD treatment.

What the official guidance says

The Ministry of Health, Labour and Welfare's medicine-import guidance lists stimulants as prohibited from personal import, and Japan Customs lists stimulant drugs among items banned from entry entirely. Both make clear that prohibited substances sit outside the certificate system that covers ordinary medication. If your medication contains amphetamine, the only safe choice is to leave it at home and plan an alternative before you travel.

Frequently asked questions

Can I bring Adderall to Japan with a prescription?

No. Japan's Stimulants Control Law bans amphetamines outright, and there is no medical exemption, import certificate, or permit that allows Adderall in. A prescription from your home doctor does not change this.

What happens if I'm caught with Adderall in Japan?

It is treated as a stimulant drug offence, not a paperwork problem. Travellers have been detained and arrested for carrying amphetamine medication. Penalties can include lengthy detention and prosecution.

What ADHD medication can I take to Japan instead?

Vyvanse (lisdexamfetamine) is permitted with advance permission from Japan's Narcotics Control Department, and some non-stimulant options are easier still. Talk to your doctor well before travel, or arrange a consultation with a doctor in Japan for a local prescription.