Ephedra, a genus of gymnosperms in the family Ephedraceae, is commonly known as joint fir, Mormon tea, or Brigham tea. It is native to central Asia and the Mediterranean region. Ephedra is a source of the alkaloid ephedrine, which has been used for centuries in traditional Chinese medicine as a stimulant and decongestant.
In the United States, ephedra was used as a dietary supplement for weight loss, energy, and athletic performance. However, in 2004, the Food and Drug Administration (FDA) banned the sale of ephedra-containing dietary supplements due to safety concerns. Ephedra has been linked to a number of side effects, including rapid heart rate, high blood pressure, seizures, and stroke. It can also be fatal, especially when taken in high doses or in combination with other stimulants.