Several experiments studied antidiabetic activities of some of plant species addressed in Table1. Based on model andevidence, these studies could be categorized in to : human studies and animal studies (Fig. 2).
In human studies for instance, according to the conducted clinical trials,administration of Cinnamomum verum can reduce
fasting blood glucose with doses of120mg/d to 6g/d for 4 to 18 weeks(Allen etal.,2013).