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The alcoholic extract of Acorus calamus roots and rhizomes was screened for pharmacological activities. It was found to possess sedative and analgetic proper-ties and caused a moderate depression in the blood pressure and respiration. The water-soluble fraction of the de-alcoholized extract relaxed the intestine and caused negative inotropic action on frog's heart. Anti-epileptic activity was absent.
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Agarwal et al. (1956) studied this question.
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