Sweet flag, sweet sedge, or 'Ogon', is in the traditional Chinese medicine garden because the bitter drug is used in the drug chang-pu. The root has long been used as an aromatic bitter to tone and settle the stomach and relieve indigestion, gas, and heartburn. The root is considered stimulant, carminative, spasmolytic, tonic, bitter, and aromatic. In India, the root is used for insecticide, anthelminthic, diarrhea, dysentery, and bronchial disease. In India and Egypt, it was used as an aphrodisiac. The root oil is strongly antibacterial.
References:
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