Present study was undertaken to investigate the anthelmintic potential of ethanolic and aqueous extracts of stem and roots of Oenothera rosea L'Hér. ex Aiton on adult Indian earthworm Eisenia fetida. Various concentrations (25, 50, 75 and 100 mg/ml) of ethanolic and aqueous extracts were evaluated for anthelmintic activity by recording the time required for paralysis and death of worms. Albendazole (20 mg/ml) was used as reference standard and 1% acacia in normal saline water as a control group. The present study has shown that, the ethanolic and aqueous extracts of Oenothera rosea stem and roots at the concentrations of 25, 50, 75 and 100 mg/ml have been confirmed to have anthelmintic activity. But ethanolic extracts of stem showed most significant anthelmintic activity as compared to the ethanolic extracts of roots and also both the ethanolic extracts(stem and root) were more active than their aqueous extracts respectively. The preliminary phytochemical analysis indicated the presence of various phytoconstituents in all the tested extracts.
