Over 60 Years of Experience

 [Tenken] C. Sinensis is developed and manufactured jointly by Seiken Well Inc. and AIN Pharmaceutical Inc..  With over 60 years of experience in manufacturing pharmaceutical products in Japan, AIN Pharmaceutical Inc. provides the highest quality medicinal products to its consumers. 

production  reishi growth  cordycep production

100% Made in Japan

[Tenken] C. Sinensis is 100% made in Japan.  Every step in the manufacturing process is strictly regulated, along with high levels of quality control; it is perfectly safe to consume.

To ensure the safety and quality of Tenken C. Sinesis Formula products, each production lot is tested for its safety by licensed third-party laboratories before release to the market. To date, all test reports confirm that the products are free of microbiological contaminants, pesticides, heavy metals, and radiation. We are dedicated to deliver to our customers safe, high quality, and reliable products from Japan. Click here.


Seiken Well Inc.
2-7-1, Nihonbashi, Chuo-ku, Tokyo, 103-6090, Japan
Website: www.seikenwell.com