If you take something every day — for blood pressure, asthma, thyroid function, contraception, reflux — a trip abroad raises a practical question well before any symptom does: what happens if the supply you brought isn't enough?
For most common long-term medications the answer is that treatment can be continued in Japan, but under a prescription written here, and not always as the identical product you're used to. A smaller group of medications can't be continued at all. This guide sets out where those lines fall.
The short answer
Bring enough for the whole trip plus a margin, and keep it in its original labelled packaging. If you still run short, a Japan-licensed physician can assess your condition and, where appropriate, issue a Japanese prescription so you can continue treatment — including through a video consultation, without visiting a clinic in person.
Why a Japanese prescription is needed
A prescription written outside Japan can't be dispensed by a Japanese pharmacy, no matter how recent it is. Continuing your medication here therefore means a consultation with a physician licensed in Japan, who reviews what you take and why before prescribing. It isn't a formality: the doctor is taking clinical responsibility for what's prescribed, which is also why no medication can be promised in advance of the visit.
Same treatment, different box
Drug availability is country-specific. A medication sold under one brand name at home may be sold under a different name in Japan, may exist only in different strengths, or may not be marketed here at all. Where the exact product isn't available, a doctor may prescribe an equivalent that is — a decision made during the consultation, based on your condition and history rather than on the label alone.
Two things make that conversation easier. Bring the packaging or a photo of the label, which usually shows the active ingredient rather than only the brand name; and know your dose and how long you've been on it. If a substitution is made, ask for it to be written down so your regular prescriber at home knows exactly what you took.
What can't be continued here
- Some medications — certain stimulants and narcotic painkillers among them — cannot be prescribed in Japan, or are tightly restricted, even where they're routine prescriptions in your home country.
- Controlled substances are not prescribed through an online consultation.
- Treatment that needs a physical examination, bloodwork, or imaging to adjust safely can't be managed by video alone. A doctor may continue you on your current dose but refer you for in-person care rather than change it blind.
- Anything where the risk of getting it wrong is higher than the inconvenience of waiting until you're home. If that's the doctor's judgment, they'll say so directly.
Bringing medication into Japan
Japan sets its own rules on bringing medication in for personal use, and some medication needs paperwork arranged before you fly rather than on arrival. What applies depends on the specific medication, and the rules change — so rather than relying on a summary, check the Ministry of Health, Labour and Welfare's English guidance on bringing medicines into Japan while you're still planning the trip. The Japanese embassy or consulate in your own country publishes the same guidance and can point you to the current procedure. Whatever you bring, keep it in its original labelled packaging with a copy of your prescription.
How an online consultation handles this
The consultation is entirely online — there's no clinic to travel to, which matters if you're managing a condition rather than an acute illness and simply need the prescription sorted out. It runs in English with an English-speaking, Japan-licensed physician, so you can explain a long medical history without working through a translation app.
- Book a slot online; consultations run 9:00–18:00 JST, Monday to Saturday, and booking is open at any hour.
- Have your medication packaging, dose, and a list of anything else you take to hand for the call.
- Talk through your condition, your current treatment, and how much longer you'll be in Japan.
- If the doctor prescribes, the prescription is emailed to you and sent to a pharmacy near where you're staying; you pay the pharmacy for the medication itself.
If you've already run out, the step-by-step in our prescription refill guide covers what to have ready. If you're feeling unwell on top of it, start with your options when you get sick in Japan.
Can I just buy my usual medication over the counter in Japan?
Sometimes, for medications that are sold without a prescription here — but many that are prescription-only at home are prescription-only in Japan too, and Japanese over-the-counter products often differ in strength and formulation. Ask a pharmacist or a doctor rather than assuming an equivalent exists.
Do I need to see a doctor if I brought enough medication with me?
No. If you have enough for your stay and your condition is stable, there's nothing to arrange. This is about running short, losing your supply, or extending your trip.
Will the doctor prescribe my exact brand?
Not necessarily — it depends on what's available in Japan. Where the exact product isn't available, the doctor may prescribe an equivalent, or explain why they'd rather not change anything until you're home.
Can I get a longer supply to cover the rest of my trip?
How much is prescribed is a clinical decision. Tell the doctor your departure date at the start of the consultation so it can be taken into account.
I'm not sure my medication is even legal in Japan. How do I check?
Check the Ministry of Health, Labour and Welfare's English guidance on bringing medicines into Japan before you travel — your nearest Japanese embassy or consulate publishes it too — and carry your prescription and original packaging. If you're already in Japan and unsure, raise it in the consultation.
