Abstract
Objective: To discuss the antidiabetic activity and its main forms of action in the midst of metabolic disturbance of insulin present in the bloodstream by plants found in plant biodiversity in Brazil. Bibliographic review: Four plants used as medicinal agents were chosen so that their possible action through extracts on the insulin disorder present in the bloodstream, already recognized by some human groups, was identified, which are: Bauhinia forficata, Pterocarpus marsupium roxburgh, Morus nigra L and Momordica charantia L. The study was carried out through the compilation of data, which weighed antidiabetic effects contained in each of the plants described throughout the research and their performance mechanisms in relation to the physiology of control glycemic in the body, through pre-clinical studies mostly. Final considerations: It was possible to visualize the positive effects of herbal medicine through each of the plants explained throughout the research in the treatment of diabetes, either for its direct effect or as an adjunct during therapy.