Figure 1: Effect on the glucose tolerance in mild diabetic rats after oral glucose overload. (▴) Diabetic control (1 mL/kg BW of 0.3% CMC in distilled water, p.o.); (◼) pretreated with metformin (15 mg/kg BW, p.o.) for seven days; (♦) pretreated with chloroform extract of Coccinia indica fruits (250 mg/kg BW) for seven days; (▴) pretreated with chloroform extract of Momordica balsamina fruits. Values are expressed as of mean ± S.D.; n = 5 in each group.