Glycyrrhiza Glabra Rhizome/Root
Licorice root contains glycyrrhizin, which can raise blood pressure and lower potassium when consumed in significant amounts. FDA has issued consumer warnings about licorice and arrhythmia risk in adults over 40 with daily large intake.
What it is
Licorice root (Glycyrrhiza glabra) — a traditional flavoring and herbal ingredient.
Flavoring in candies, beverages, and herbal teas; also used in cosmetics.
Why it's flagged
- glycyrrhizin can cause hypertension and hypokalemia at high intake
What regulators actually say
"If you're 40 or older, eating 2 ounces of black licorice a day for at least two weeks could land you in the hospital with an irregular heart rhythm or arrhythmia."
Regulatory status
United States — FDA
Licorice and licorice derivatives are GRAS for use as flavoring (21 CFR 184.1408 ammoniated glycyrrhizin); FDA has issued consumer advisories.
European Union — EFSA
EFSA has set a 100 mg/day upper limit guideline for glycyrrhizin.
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