Yohimbe (Pausinystalia yohimbe) is the name of an evergreen tree native to western and central Africa. The bark of the tree contains an active compound called yohimbine. Yohimbe bark was traditionally used as an aphrodisiac.
In the United States, yohimbine has been developed into a prescription drug for erectile dysfunction. In this form, it is more commonly known as yohimbine hydrochloride and has been used for longer than viagra. Yohimbine hydrochloride can also be found as an over-the-counter supplement.
Yohimbine, also known under the antiquated names quebrachin, aphrodin, corynine, yohimvetol and hydroergotocin, is the principal alkaloid of the bark of the West-African tree Pausinystalia yohimbe Pierre, family Rubiaceae (Madder family). Yohimbine is a selective competitive alpha2-adrenergic receptor antagonist that is sometimes used as an alternative, treatment for erectile dysfunction.