ナイキサン錠100mg
Naproxen (Aleve)
Naproxen · ナイキサン
Naproxen is uncommon in Japan: a single prescription product (Naixan 100 mg) exists and there is no OTC Aleve equivalent. Japanese doctors and pharmacists will point you to loxoprofen, which fills the same role. Bringing your own Aleve is fine within the 2-month OTC limit.
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
- Aleve · Naprosyn
Over the counter
Not sold OTC in Japan. Loxoprofen (Loxonin S) or ibuprofen are the OTC alternatives.
Prescription products in Japan
1 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 | ナイキサン |
|---|---|
| Dosage forms | Oral |
| Strengths (oral) | 100mg |
| Official price (per tablet or unit) | ¥6.3 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.
All listed products (1) · Drug price list as of 2026-08-12
| ナイキサン錠100mg | Oral · ¥6.3/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 | Aleve, Naprosyn |
|---|---|
| UK | Naprosyn, Feminax Ultra |
| Korea | 낙센, 탁센 |
| China | 萘普生 |
| Taiwan | 能百鎮 |
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.