Figure 4.

Oral glucose tolerance test (OGTT) for all groups of animals in the last week of experimental period. Data are presented as the mean ± SD of eight animals. ^a–cValues with different letters for a given time are significantly different from each other (Tukey’s-HSD multiple range post hoc test, p < 0.05). NC: Normal Control; DBC: Diabetic Control; DZL: Diabetic Ziziphus mucronata low dose (150 mg/kg bw); DZH: Diabetic Ziziphus mucronata high dose (300 mg/kg bw); DMF: Diabetic metformin; NZT: Normal Ziziphus mucronata toxicological dose (300 mg/kg bw).