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Warning About Black Licorice From FDA

DENVER (CBS4) - Don't eat too much black licorice! That's the warning from the U.S.  Food and Drug Administration.

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Apparently, too much of the candy can cause health problems such as irregular heart rhythm, especially in people over 40.

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That's because of an ingredient called glycyrrhizin in the candy that makes it sweeter, but can also cause a dangerous drop in potassium levels.

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The FDA says just don't eat too much of it at once.

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