The effect of daily oral administration of F. deltoidea leaf extracts on the plasma insulin level of streptozitocin-induced diabetic rats. The data was collected on the first and the last days of extract administration. FPE = Petroleum ether extract; FCE = Chloroform extract; FME = Methanol extract and FEW = Water extract. The values are expressed as mean ± SEM (n = 6 in each group). **p < 0.01 compared to the diabetic control group (10 ml/kg vehicle).