Do not take products that contain ephedra or its active ingredients. Ephedra is LIKELY UNSAFE for adults and children. Ephedra can cause severe life-threatening or disabling conditions in some people. Ephedra use is linked to high blood pressure, heart attacks, muscle disorders, seizures, strokes, irregular heartbeat, loss of consciousness, and death. These side effects might be more likely if ephedra is used in high doses or long-term. Doses greater than 32 mg per day might more than triple the risk for bleeding within the brain (hemorrhagic stroke). The risk for serious side effects seems to be greater than any potential benefit.
Ephedra is banned in the U.S.