Supplement ingredient made from outdoor cultivated medicinal* mushrooms:
King Agaricus KA21
*Definitions of medicinal mushrooms differ by country
Toei Shinyaku Co., Ltd.

A Research and Development Manufacturer
Specializing in Agaricus blazei
We are a manufacturer specializing in the highest-quality outdoor cultivated Agaricus blazei. Backed by 34 international publications—among the highest in the Agaricus industry—we export our original ingredient “King Agaricus KA21” and also offer OEM services, as well as the manufacturing and sales of various supplements for immunity, hair growth, and ED improvement.
BUSINESS DETAILS
- Company Name
- Toei Shinyaku Co., Ltd.
- Date of Establishment
- April 11th, 1973
- Head Office Location
- 1-11-23 Shimorenjaku, Mitaka City, Tokyo
- Location of Factories
- Shizuoka Prefecture, Toyama Prefecture
(both are external GMP-certified factories) - Representative
- Akimoto Motoi
- Company Site (Japanese)
- https://toeishinyaku.com/company/
- Company Site (English)
- https://www.agaricus.co.jp/
- Major Business Partners
- B2B Export Destinations: Singapore, China, Taiwan, South Korea, Vietnam, Thailand, India, Nepal, UK, Lithuania, and more
- Industry
- Supplement
- Achievements
- 2020: NutraIngredients-Asia Awards 2020 Winner
2021: Selected as a supported product under the Tokyo Metropolitan Small and Medium Enterprise Support Center’s Overseas Market Development Program
2021: Certified as one of the “Meibyo Research Institute Brand 100” by the Japan Meibyo Research Institute
2023: Nominated for NutraIngredients Awards 2023
2023: Nominated for NutraIngredients-Asia Awards 2023 - Product Certifications, Patents and Trademarks
- Certifications: GMP, FSSC22000, HALAL
Patents: 4 in Japan, 2 in the United States
Published International Papers: 34
Domestic Papers: 9
International Conference Presentations: 14
Domestic Conference Presentations: 68