(Pausinystalia johimbe)     Yohimbe is a tree found throughout Africa. It is most popular for its use as an aphrodisiac (to stimulate sexual desire) and is often beneficial for treating the following conditions: Erectile dysfunction (impotence), sexual problems (in Both male and female) depression, high and low blood pressure, and chest pain.  Yohimbe dilates the blood vessels near the skin, mucous membranes, and sex organs.  This may cause fatigue in individuals with low blood pressure or heart irregularities. *Note* Should not be used if you are on heart medicines or blood pressure pills.