https://www.scienceherb.com/products/yohimbine-powder-146-48-5/
https://www.scienceherb.com/know-about-yohimbine/
Yohimbine powder, also known as quebrachine, and not to be confused with yohimbe, is a indoloquinolizidine alkaloid derived from the bark of the African tree Pausinystalia johimbe; also from the bark of the unrelated South American tree Aspidosperma quebracho-blanco.
Yohimbe is used as a dietary supplement for impotence, athletic performance, weight loss, chest pain, high blood pressure, diabetic neuropathy, and more. Yohimbine hydrochloride, a standardized form of yohimbine, is available in the United States as a prescription drug for erectile dysfunction.