The aim of the present study was investigation of in vitro antihelmentic activity of crude methanolic and aqueous extract of bark of Emblica officinalis using Pheretima posthuma as test worm. Various concentrations of (25, 50, 100 mg/ml) of methanolic and aqueous extracts were tested in the bioassay, which involved the determination of time of paralysis (P) and time of death (D) of the worms. Albendazole was included as standard reference and distilled water as control. The both extracts showed greater P and D time when compared with the standard reference Albendazole. The results of present study indicated that the crude aqueous extract significantly paralysis and also caused death of worm in short time, as compared to methanolic extract. In conclusion, the traditional use of stem bark of the plant of Emblica officinalis as an antihelmentic activity have been confirmed and further studies are suggested to isolate the active principles responsible for activity.
