Continuing Your Overseas Prescription in Japan: How to Get Your Medicine Re-prescribed Locally
If you are continuing an overseas prescription in Japan and will stay longer than your imported supply lasts, the practical long-term route is usually to establish care with a Japanese doctor and obtain a prescription that can be dispensed locally. Your overseas records are valuable; however, the Japanese clinician still makes an independent prescribing decision.
Quick answer
A Japanese pharmacy dispenses against a Japanese prescription, so an overseas prescription in Japan works as clinical evidence, not as something a pharmacy can fill. Bring a concise treatment summary showing the diagnosis, active ingredient, strength, dose and treatment history. A Japanese doctor can then assess whether the same medicine, a Japanese equivalent or another appropriate treatment is available locally.
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What to bring when you transfer an overseas prescription in Japan
Tick these off as you prepare. The more precise the record, the easier it is for the doctor to continue or adapt your treatment.
For the general clinic checklist (insurance card, ID, cash), see what to bring to a doctor, clinic or hospital in Japan.
Choose the right Japanese specialty
The appropriate clinic depends on the condition and the medicine. For example, an internal-medicine clinic may manage many stable chronic conditions, while psychiatric, neurological, endocrine or other specialist medicines may need the relevant specialty. Some medicines also have product-specific prescribing or dispensing controls.
If you need an English-speaking clinic, start with our foreign-friendly clinics list or the guide to finding an English-speaking doctor in Japan.
An overseas prescription is useful evidence of your treatment history, but do not assume a Japanese pharmacy can dispense from it. Under the Pharmacists Act, pharmacists dispense against a prescription from a doctor or dentist, so you need a Japanese clinical assessment and a Japanese prescription.
The same active ingredient may look different in Japan
Brand names, strengths, dosage forms and packaging differ between countries. Therefore, the most reliable comparison starts with the generic name (active ingredient), then checks whether the same strength and formulation are approved and marketed in Japan.
PMDA’s prescription medicine search is the authoritative place to check Japanese product information, including package inserts.
Generics and the branded-medicine extra charge changed in June 2026
Japan encourages the use of generic medicines. Where an eligible long-listed original medicine has a generic alternative and you choose the original for preference rather than medical necessity or a supply reason, a separate selected-treatment charge 選定療養 applies on top of your normal co-payment.
From June 2026, MHLW states the special charge is equivalent to one-half of the price difference between the original medicine and the generic. Where several generics exist, the highest-priced generic is used, and consumption tax is added. This replaced the earlier one-quarter calculation.
Japanese prescription validity and supply limits
A prescription issued by an insured Japanese medical institution is valid for four days including the date of issue, weekends and holidays included, unless the doctor writes a different validity period for special circumstances such as long travel.
In addition, some medicines have maximum prescribing periods, including certain psychotropics and other specified medicines. The limit depends on the individual product, so check it rather than assuming every medicine can be issued for 30, 60 or 90 days. Keep your okusuri techō (medicine notebook) up to date so each pharmacy sees your full list.
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Price confirmed before work begins · Reply within 1–3 business days · Secure document process. MedicTranslate does not choose medicines or give prescribing advice; treatment decisions remain with the doctor.
Frequently asked questions
Can I use my overseas prescription directly at a Japanese pharmacy?
Do not assume an overseas prescription can be filled directly. Japanese pharmacists dispense against a prescription from a doctor or dentist under the Japanese system. Use your overseas prescription and treatment summary as clinical evidence for a Japanese doctor.
What should I bring to the first Japanese appointment?
Bring your current prescription, a treatment summary, the active ingredient and dose, relevant test results, allergy information and the original medicine packaging where practical. A Japanese translation helps when the history is clinically important.
What if my medicine is not approved or marketed in Japan?
A Japanese doctor may discuss an approved local alternative. If continued personal import is legally permitted, the separate import rules may also apply. Do not switch or stop treatment without clinical advice.
How long is a Japanese prescription valid?
A prescription from an insured Japanese medical institution is valid for four days including the date of issue, weekends and holidays included, unless the doctor writes a different period for special circumstances.
Did the branded-medicine extra charge change in 2026?
Yes. From June 2026, if you choose an eligible long-listed original medicine when a generic is available and no medical or supply exception applies, the special charge is one-half of the price difference between the original and the highest-priced generic, plus consumption tax.
Can MedicTranslate prescribe or recommend a Japanese equivalent?
No. MedicTranslate is not a healthcare provider. We translate your records, help you find a suitable clinic and arrange interpreters. Choosing or substituting a medicine is a decision for the treating doctor.
This article provides general information reviewed on 29 September 2026. It is not medical, pharmaceutical or legal advice. Medicine approval, availability, import rules, supply limits and prescribing decisions are product- and patient-specific and change, so confirm them with your doctor, pharmacist and MHLW. Do not stop or alter a prescription without consulting a qualified clinician. MedicTranslate provides translation, interpreting and coordination services and is not a healthcare provider.