The present study is undertaken to explore the effects of aqueous, alcoholic, chloroform and Petroleum ether extracts of Hibiscus rosa sinensis(HS), Aegle marmelos(AM), and Jatropha curcas(JC) on blood glucose level in both normal and alloxan induced diabetic rats.  In this single dose study, extracts are prepared by Maceration process with different solvents. Extracts of HS, AM, JC  was given once orally in different doses .The effect of extract was studied in normal rats, alloxan (150mg/kg, i.p.) induced diabetic rats and glucose fed normal rats by measuring fasting blood glucose level at different intervals. The extracts exhibited significant (p