Otsuka Pharmaceutical Co., Ltd.

大塚製薬株式会社

At a glance

Japanese name大塚製薬株式会社
Established1921
LocationChiyoda (HQ), Tokyo
Factory locationsNaruto, Tokushima (major factory)
English supportAvailable
Export experienceGlobal
CertificationsGMP
Websitewww.otsuka.co.jp/en

About

Global pharmaceutical company. Discovered the world's first food-grade Equol-producing lactic acid bacterium 'Lactococcus 20-92' after 18+ years of research and screening 1,300+ strains. Launched 'Equelle' (EQUELLE) in 2014 as the world's first commercial fermented-soy Equol supplement. 'Yuragi-ki®' (ゆらぎ期®) is Otsuka's registered trademark for menopause-era marketing. Product line: Equelle tablets (10mg Equol/4-tablet daily), Equelle Petit (compact 2-tablet daily), Equelle Jelly (orange-flavored with vitamin D, collagen, calcium).

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Last updated: 2026-04-24