The plant Euphorbia came from Mount Atlas region of present-day Morocco and was probably the resin Spurge. This local herb is used by traditional herbalists for treatment of hypertension, diabetes and several other ailments. The aim of this study is to investigate the toxic effect of aqueous extract of Euphorbia drupifera on the physiology of wistar rats. Considering objectives such as: determining the efficacy of Eupholobia drupifera in rat and determining if the extract is dose and time-dependent. Twenty five (25) normal wistar rats were used for this study. They were acclimatized and randomly distributed into groups A-D and control. They were given, oral administration of Euphorbia extracts twice daily. Doses of 0.056ml/g, 0.118ml/g, 0.174ml/g and 0.254ml/g were given to groups A,B,C and D respectively. The higher the dosage, the shorter the time of death. The animals were observed for morphological changes afterwards. Five rats, one from each group were examined after death. The results obtained recorded a 100% mortality rate in the test groups of rats. Tissue observation showed swollen intestine. Behavioural observation showed continuous itching immediately after feeding with extract, reduced activity, loss of appetite, drowsiness, and swollen jaws. E. drupifera was found to have a severe toxic effect on the physiology of rats as 100% mortality was observed in all test groups(Group A, 144hrs; Group B, 96hrs; Group C, 48hrs; and Group D, 36hrs). Thus, caution should be taken in handling and general usage of the plant. No death occurred in the control group without the extract.
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