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Research Paper Open Access
In the present study, methanol extracts of Costus speciosus Koen. aerial parts were assessed for antiinflammatory, analgesic and antipyretic activities in experimental animals. The antiinflammatory activity of methanol extract of Costus speciosus (400 and 800 mg/kg, p.o.) was evaluated using carrageenan-induced paw oedema test. Analgesic effect was evaluated using acetic acid-induced writhing and Eddy's hot-plate models and antipyretic activity was assessed by Brewer's yeast-induced pyrexia in rats. The methanol extract of aerial parts of Costus speciosus in a dose of 400 and 800 mg/kg showed significant antiinflammatory activity (19.36 and 40.05% reduction) at 5 h postmedication. In analgesic models extract treated animals at (400 and 800 mg/kg) inhibited writhing's caused by acetic acid by 14.24 and 31.90%, respectively, and it also increased the latency period at both high and low doses which showed the mean reaction time at 16.60±0.355 s and 14.12±0.355 s, respectively, when compared to control in hot-plate test. It also reduces the rectal temperature of the animals at low and high doses significantly 37.03±0.108° and 36.63±0.098°, respectively, in Brewer's yeast induced pyrexia. The obtained results of the present investigation revealed that methanol extract of Costus speciosus has significant antiinflammatory, analgesic and antipyretic activities.
Analgesic, antiinflammatory, antipyretic, carrageenan, Costus speciosus