White Kwao Krua is a type of hard vine that grows up and climbs around large trees. Flowers are bluish purple and similar to bean flowers. Tuberous roots are in different sizes. Its appearance is similar to a yam root. Inside the root is white and the taste can cause dizziness.

Family Name: Leguminosae.

Common Name: Kwao Krua Khao, ( White Kwao Krua )

Scientific Name: Pueraria candollei Grah. Ex Benth. var. mirifica (Airy Shaw et Suvatabandhu) Niyomdham (symnonym: Pueraria mirifica(Airy Shaw&Suvat., Niyomdh.)

Parts used: The tuberous roots.

Pueraria mirifica (Kwao Krua Khao in Thai) is a Thai herbal plant found in the northern , the west and the northeast of Thailand at the altitude of 300-800 meters above sea level. The tuberous roots of White Kwao Krua contained constituents : miroestrol , deoxymiroestrol and isoflavonoids including daidzin, daidzein, genistein, coumestrol, mirificin, tuberosin, puemirificarpene etc.