At the Institute if Sexology in Paris, France; Muira puama has been the subject of three published clinical studies conducted by Dr. Jacques Waynberg, one of the world´s foremost authorities on sexual function and author of 10 books on the subject.

The first study comprised 262 men complaining of lack of sexual desire, or inability to attain or maintain erection. The result: After two weeks, 62 percent of patients with loss of libido rated the treatment as having a dynamic effect, while 52 percent of patients with erectile dysfunction rated the treatment as beneficial.