Question

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which of the following substances is currently banned by the fda?
licorice root
st. johns wort
ephedra
ginger

Explanation:

The FDA banned ephedra (containing ephedrine alkaloids) due to safety concerns like increased risk of heart attacks, strokes, and other adverse effects. Licorice root, St. John's Wort, and ginger are not banned by the FDA (though they may have usage guidelines or considerations, they lack a general ban like ephedra).

Answer:

C. ephedra