Pueraria mirifica
Pueraria mirifica (also known as Kwao Krua) is a root found in northern and north eastern Thailand and Myanmar.
In Thailand, the plant “Kwao Krua” is considered to be a rejuvenating drug and has a history in folk medicine. Although the name “Kwao Krua” had been applied to several species of plants having tuberous roots, it was definitively identified as Pueraria mirifica in 1952 from which an unusual estrogenic phenol miroestrol was isolated eight years later. There exists two kinds of Kwao Krua roots, namely white and red. The White Kwao Krua is an herb used by females and the Red Kwao Krua is the herb used by males. White Kwao Krua has a high concentration of Phytoestrogen while Red Kwao Krua is used by males and has substances that also increases libido (sex drive).