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Sweet Flag

Acorus Calamus

Sweet flag was listed in the U.S. Pharmacopeia (1820-1916) and the National Formulary (1936-1950). During those years, physicians used it for stomach cramps and gass and as a tonic and stimulant. Experimental evidence suggests that extracts of sweet flag rhizome and roots may alleviate stomach cramps.

The U.S. Food and Drug Administration has classified sweet flag as "unsafe."

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