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July 2021

J Ethnopharmacol. 1987 May; 19(3): 247-53.

Skeletal muscle relaxant action of an aqueous extract of Portulaca oleracea in the rat.

Parry O, Okwuasaba FK, Ejike C.

Department of Pharmacology, University of Jos, Nigeria.

The aqueous extract of Portulaca oleracea produced skeletal muscle relaxation in rats following i.p. or oral administration, as assessed by the prolongation of pull-up time. The i.p. route of administration was more effective. When compared with chlordiazepoxide (20 mg/kg, i.p.), diazepam (40 mg/kg, i.p.) and dantrolene sodium (30 mg/kg, oral), the extract (200-1000 mg/kg, i.p.) proved a more effective skeletal muscle relaxant. With 1000 mg/kg i.p., 80% lethality was seen. The LD50 in an acute toxicity test in mice was 1040 mg/kg i.p.


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