Pueraria mirifica Identity & Plant Part
The botanical entity is Pueraria mirifica Airy Shaw & Suvat., a perennial climber of the Fabaceae family native to northern and northeastern Thailand and neighboring Myanmar. The part used is the tuberous storage root. Leaves, stems, flowers and seed are not part of this ingredient.
Species identity is the main trap. Kudzu, the vine behind the Chinese root drug ge gen, is Pueraria montana var. lobata, and Indian kudzu, or vidari kanda, is Pueraria tuberosa. These are separate species with their own roots and their own markets. White kwao krua, Pueraria mirifica, differs from both, and it is also unrelated to the red and black kwao krua, which come from other genera.
The root carries isoflavonoids and chromenes, miroestrol among them, and those families set it apart from the kudzu roots, where puerarin is the signature compound.












