Botanical name :  Butea superba Roxb.
Family name : PAPILIONACEAE
Thai name : Kwaao Khruea Daeng

Butea, is a big-sized climbing plant with characteristics similar to those of Pueraria mirifica , except for a larger and thicker leaf. The root is cylindrical in shape. The root has a yellow in color and changes to brown when cut. There is no lumen. Its starch granules are larger than those ofPueraria mirifica . They both are typically found in the same areas such as the Northern, North eastern, and Western Regions of Thailand.

The active ingredients found in Butea are 4'-methoxyfisentin or 3,7,3'-trihydroxy-4'-methoxyflavone and 4'-methoxyfisetin-7-O-β-D-glucopyranoside or 3,5'-dihydroxy-4'methoxy flavone-7--O-β-D-glucopyranoside.

Reportedly, the chemicals in Butea are non mutagenic and can generate a vasodilating effect, especially in a penis, the same effect as is caused by Viagra®.

Butea Extract can also be used in ingested products, such as dietary supplement, and in topical application as in cosmetic products.