Are ephedra and synephrine safe?
While these ingredients are generally safe when taken according to label instructions, some people may experience some of the following symptoms in association with their use: increased heart rate, jitters, shakiness and elevated blood pressure. These effects may be increased when either ephedra or synephrine is taken in conjunction with caffeine or other stimulants. Consult your health care provider before taking herbal products containing ephedra or synephrine or other weight-loss products.
