There have been some studies to suggest that a placebo effect that improves ED may work for some men. One study found that men taking an oral placebo pill showed as much improvement in ED symptoms as men who took actual medication to improve ED. Conversely, men who were given therapeutic suggestions to improve ED did not see signs of symptom improvement.
Extracts from medicinal plants have been used for considerable period of time in many parts of the world, particularly in Southwest Asia, to treat ED . The current review focuses on four botanical medicinal plants, the roots of which are used in enhancing sexual performance and in the treatment of ED: Eurycoma longifolia Jack (tongkat ali); Chlorophytum borivilianum (safed musli); Withania somnifera (ashwagandha); and Pausinystalia johimbe (yohimbine, formerly known as Corynanthe johimbe).