A popular component of diet pills, bitter orange may be the new ephedra. Canada has reported 16 cases of cardiac arrest and two deaths associated with the use of bitter orange or synephrine, the key compound in bitter orange. Synephrine stimulates the nervous system in the same way ephedra does, causing arrhythmias, myocardial infarction, and blackouts. Bitter orange is especially dangerous when taken in combination with products containing caffeine.
Precautions
Keep in mind that there are no regulations about health supplements, so in theory, anything can make it into the market. Be cautious.
If you have any previous conditions or are at high risk because of age or family history, please consult your health care professional before taking any natural health products. Read labels, do your research, ask around. You can also consult the Federal Drug and Administration (FDA) website for posted warnings on herbs.