Estrogen (weak)
Estriol in Japan: prescription, brands, pricing
This page summarises the situation of Estriol in Japan under PMDA (Pharmaceuticals and Medical Devices Agency): prescription status, available brands and generics, pharmacy dispensing, and online options in JPY. Estriol belongs to the Estrogen (weak) class.
- Regulator
- PMDA (Pharmaceuticals and Medical Devices Agency)
- Currency
- JPY
About Estriol
Estriol vaginal preparations are approved for treatment and prevention of urogenital atrophy and recurrent urinary tract infections in postmenopausal women, and in some markets for vaginal preparation before pelvic surgery. 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
Estriol binds estrogen receptors but with shorter receptor occupancy and weaker activation than estradiol, producing a 'weak' estrogenic effect.
Brands and generics in Japan
In Japan, Estriol 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 Estriol 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 Estriol available in Japan? ▾
Yes — Estriol 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 Estriol 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 Estriol (Rx or OTC) is determined by PMDA (Pharmaceuticals and Medical Devices Agency); most active ingredients in the Estrogen (weak) class require prescription, although there are exceptions by country and formulation.
How much does Estriol 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 Estriol in Japan
Estriol 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.