Nucleoside antiviral prodrug
Valacyclovir in Japan: prescription, brands, pricing
This page summarises the situation of Valacyclovir in Japan under PMDA (Pharmaceuticals and Medical Devices Agency): prescription status, available brands and generics, pharmacy dispensing, and online options in JPY. Valacyclovir belongs to the Nucleoside antiviral prodrug class.
- Regulator
- PMDA (Pharmaceuticals and Medical Devices Agency)
- Currency
- JPY
About Valacyclovir
Valacyclovir is approved in adults for the treatment of herpes simplex virus infections, including genital herpes (initial episodes, recurrent episodes and suppressive therapy), herpes labialis (single-day high-dose regimen), reduction of t… Japan classifies medicines into prescription drugs (医療用医薬品) and OTC drugs (一般用医薬品), the latter further divided into pharmacist-only (第1類) and self-service classes. The Ministry of Health, Labour and Welfare (MHLW) sets the regulatory framework; PMDA reviews safety and efficacy.
Mechanism and action
Valacyclovir is rapidly and almost completely converted to acyclovir during first-pass intestinal and hepatic metabolism by valacyclovir hydrolase.
Brands and generics in Japan
In Japan, Valacyclovir is typically dispensed as one internationally recognised brand along with their corresponding authorised generics. Japanese pharmacies (薬局) and drugstores (ドラッグストア) such as Matsumoto Kiyoshi and Welcia are widespread. Prescription dispensing pharmacies (調剤薬局) are usually located near hospitals and clinics; pharmacist counselling at dispensing is mandated by the Pharmaceutical Affairs Law. Brand-to-generic substitution is decided by the pharmacist under local PMDA (Pharmaceuticals and Medical Devices Agency) equivalence rules, and the price difference in JPY is usually substantial.
Online and tele-prescribing access
Japan permits online sale of most OTC medicines under the 2014 amendments to the Pharmaceutical Affairs Law, with class-based restrictions. Online prescription dispensing is allowed via licensed pharmacies after a face-to-face or telemedicine consultation; personal importation of prescription medication is restricted to limited quantities for personal use. For Valacyclovir specifically, the legal online options in Japan depend on its Rx-or-OTC classification under PMDA (Pharmaceuticals and Medical Devices Agency).
Frequently asked questions
Is Valacyclovir available in Japan? ▾
Yes — Valacyclovir and its brands are available in Japan through pharmacies authorised by PMDA (Pharmaceuticals and Medical Devices Agency), in various strengths depending on the commercial product. Authorised generics offer a lower-cost alternative with the same active substance.
Do I need a prescription for Valacyclovir in Japan? ▾
Japan classifies medicines into prescription drugs (医療用医薬品) and OTC drugs (一般用医薬品), the latter further divided into pharmacist-only (第1類) and self-service classes. The Ministry of Health, Labour and Welfare (MHLW) sets the regulatory framework; PMDA reviews safety and efficacy. The exact status of Valacyclovir (Rx or OTC) is determined by PMDA (Pharmaceuticals and Medical Devices Agency); most active ingredients in the Nucleoside antiviral prodrug class require prescription, although there are exceptions by country and formulation.
How much does Valacyclovir cost in Japan? ▾
The price in JPY depends on the manufacturer (brand vs authorised generic), the strength and the pack size. Generics are typically substantially cheaper than brands and serve as the economic reference for ongoing use.
Products with Valacyclovir in Japan
Valacyclovir in other countries
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.