Butea Superba 

Red Kwao Krua

“Butea Superba” is a native herb in the family Popilionaceae. It is a woody long-life herbal plant which exists only in Thailand. This species can be found in the same habitat as Pueraria Mirifica in the mountainous area. The long shape tuber are annually enlarged and contain at least 15 chemicals in the group of direct chain organic acid, especially flavonoids and flavonoid glycosides with e-AMP Phosphodiesterase, a potent inhibitor found directly at the corpus cavernosum of the penis which enhances blood flow to that area. In addition, it supports the normal sexual function, enhancing sensitivity and promoting better performance. After many studies, Butea Superba is also used in dietary supplements and cosmetic products.