Abstract
Myrtus communis has been recommended for relief of insomnia in Ethiopian traditional medicine and aromatherapy. However, no pharmacological studies have yet evaluated its sedative-hypnotic like effect. The aim of this study was to determine if the essential oil of Myrtus communis has sedative-hypnotic like activity. The essential oil of Myrtus communis (500,600, 800, and 1000 mg/kg) were administered orally to Swiss albino mice of both sex, 60 minutes before pentobarbital injection (50 mg/kg). Latency to sleep and sleep duration were recorded. More over the effect of the EO on motor-coordination and muscle relaxation were evaluated using Chimney and Traction test 60 and 90 min after administration of the respective doses of the EO respectively. The essential oil prolonged pentobarbital-induced sleeping time at 600, 800 (comparable to diazepam 3mg/kg), and at 1000 mg/kg compared to vehicle-treated group. The 50% negative response was observed on the Chimney and Traction test at 800 and 1000mg/kg respectively. The essential oil of Myrtus communis possesses dose dependent sedative-hypnotic like activity and CNS depressant activity.
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