トピナ細粒10%
Topiramate (Topamax)
Topiramate · トピナ
Topiramate (Topina, 25, 50 and 100 mg) is approved in Japan only as an add-on for epilepsy. Patients taking it abroad for migraine or as part of Qsymia will find Japanese doctors reluctant to prescribe it for those uses; bring your own supply under the 1-month rule.
At a glance
- Prescription status
- Prescription only
- Over the counter
- Not sold OTC
- Bringing it into Japan
- ✓ 1 month Rx / 2 months OTC
- Names abroad
- Topamax
Over the counter
Prescription only. Approved in Japan for epilepsy only; migraine prevention and weight loss are off-label here.
Prescription products in Japan
7 productsProducts on Japan's national drug price list. Prescription only: a clinic visit is needed, and pharmacies may substitute a generic with the same ingredient.
| Brand names | トピナ |
|---|---|
| Generic | 3 generic products |
| Dosage forms | Oral |
| Strengths (oral) | 25mg · 50mg · 100mg |
| Official price (per tablet or unit) | ¥8.6 – ¥92.8 Official NHI drug price. Patients with Japanese insurance pay 10–30%; visitors without it pay the full price plus consultation fees. |
Product names are shown in Japanese, exactly as printed on the package and the prescription. Show this page at the pharmacy.
トピナ錠25mg
トピナ錠50mg
トピナ錠100mg
トピラマート錠25mg
アメル
トピラマート錠50mg
アメル
トピラマート錠100mg
アメル
All listed products (7) · Drug price list as of 2026-08-12
| トピナ細粒10% | Oral · ¥92.8/g |
|---|---|
| トピナ錠100mg | Oral · ¥59.9/tablet |
| トピナ錠25mg | Oral · ¥16.5/tablet |
| トピナ錠50mg | Oral · ¥36.1/tablet |
| トピラマート錠100mg「アメル」 · Generic | Oral · ¥25.6/tablet |
| トピラマート錠25mg「アメル」 · Generic | Oral · ¥8.6/tablet |
| トピラマート錠50mg「アメル」 · Generic | Oral · ¥18.4/tablet |
Bringing it into Japan
Up to a 1-month supply of prescription medicine, or 2 months of OTC medicine, without any paperwork. For more, apply for a Yakkan Shoumei (import confirmation) before travel.
Getting it prescribed in Japan
Any clinic can prescribe it after a consultation. Bring the original packaging or a medication list. Use the hospital finder to find clinics with English-speaking staff or an international patient office.
Names abroad
| US | Topamax, Qsymia (combination) |
|---|---|
| UK | Topamax |
| Korea | 토파맥스 |
| China | 妥泰 |
| Taiwan | 妥泰 |
Sources
- Health Insurance Claims Review & Reimbursement Services — Drug master (NHI drug price list) shinryohoshu.mhlw.go.jp — 2026-08-12
- Ministry of Health, Labour and Welfare — Bringing medicines for personal use into Japan mhlw.go.jp
This page describes how a medicine is regulated and sold in Japan. It is not medical advice and does not cover dosing for your situation; follow your doctor's and pharmacist's instructions.