There’s a certain amount of controversy swirling around Yohimbe, which comes from the bark of a tree that grows in parts of Africa. The herb is thought to combat both depression and erectile dysfunction, but it has side effects, including increased heart rate and altered blood pressure (lower or higher). The problem with Yohimbe (and Yohimbe tea) is that there’s no way to regulate dose. How much of the active compounds you get depends on what part of the tree it comes from, and how the tree was cultivated. If you want to try Yohimbe tea, you’re strongly advised to consult your physician first.