Black Licorice Lozenges Close Up

Do not eat large amounts of black licorice this Halloween— or ever, warns the Food and Drug Administration.

The candy, made from a shrub usually found in Greece, Turkey and Asia, contains a compound (glycyrrhizin) that can lower a person’s potassium levels, FDA experts say. So, eating too much could cause heart problems, high blood pressure, swelling and sluggishness, an FDA advisory reports.

Last year, the FDA heard of at least one case of black licorice causing health problems, according to the advisory.

Especially for those 40-years-old and older, eating two ounces of black licorice a day for at least two weeks could throw off heart rhythms.

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SOURCE: USA Today, Ashley May