Abstract
Aqueous extracts of Piper methysticum Forst, were tested for pharmacological activity. The roots of this plant have been used by the natives of many of the islands of the South Pacific in a beverage known as Kava to allay anxiety and reduce fatigue. The extracts were shown to have a depressant action on the central nervous system, evidenced by depression of spontaneous motor activity, marked reduction in irritability of rats having bilateral septal lesions, inhibition of the conditioned avoidance response in rats, and blockade of EEG arousal patterns in cats.
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