Diosgenin-rich type of Yams is limited worldwide. Unfortunately, Japanese Yams contain little amount of Diosgenen.
We Resilio use Diosgenin extracted from the Yam obtained in Henan Province of China, which is well known as the top grade quality used for Chinese medicines. Both the raw material Diosgenin and the supplement “Diosgenin Gold” are manufactured at the factory in Japan under strictly controlled GMP regulations.
Recently, there is certain tendency in general for people to keep Chinese-origin raw materials at a certain distance. However, it is also the truth that most of raw materials used for Chinese medicines cannot be produced except China. The Yam called “KAI-YAMA-IMO” obtained in Henan Province of China is produced at the well controlled farm and the Diosgenin-rich Yam extract, used for Diosgenin Gold, is manufactured at the extraction factory having the state-of-the-art facilities.