Butea Superba is used as a sex enhancer in Asia by middle-aged and older men as a tonic and virility enhancer. One human trial shows Butea Superba can improve erectile function in males (see below). Studies done on rodents showed that when Butea Superba (the frondosa koen species) was given to male rats, they mounted female rats more often and they also ejaculated more frequently. In addition, the roots and stem of the plant are considered to help increase male sexual performance. Thus, this plant has come to be known as a miracle herb. Since Butea Superba helps to enhance human health, it was considered to be an essential factor to entity the chemical constituents of this herb.
One study indicates that Butea Superba has some anticholinesterase activity. This would mean that Butea Superba can increase levels of acetylcholine in the body. Acetylcholine is known to be involved with erectile function and memory. While White Kwao Krua has business potentials for females, Red Kwao Krua seems to have such commercial promises for males that it has been called the “Herbal Viagra” or even the “Viagra Alternative”.
Another study shows that Butea Superba works primarily by increasing the relaxation capacity of the corpus cavernous smooth muscles (which are the two chambers in the penis) via cAMP phosphodiesterase (PDE5) inhibition and it also is believed to act on the brain by actually triggering the improvement of the emotional sexual response. PDE 5 is often called the “erection killing” enzyme in your body. PDE 5 sole job is to deflate erections. Men who have trouble achieving and maintaining an erection most often it is because of the PDE 5 enzyme has not been neutralized. The longer the PDE 5 enzyme can be neutralized the longer erections last, the easier it is for erections to occur and the more the chambers of the penis can expand thereby increasing the size, quality, fullness, firmness and frequency of erections. No other natural compound can do this.
Animal studies on 10 middle-aged male rats force-fed for 10 days with 4 mg/kg of Butea Superba showed no short-term abnormality. Human studies on 3 male volunteers (age 20 to 55) receiving up to 1.6 g/day of Butea Superba for 2 months showed dramatic penile responses such as induction and elevation of early morning erection, erection frequency, penis strength, prolongation of erection, post-ejaculation erection, and intercourse frequency. The response was found to be dose-dependent, while a few volunteers felt neck ache and backache

