Abstract : Diabetes mellitus is a metabolic disease whose incidence is growing at an alarming rate worldwide, especially in developing nations. According to the World Health Organization, diabetes would rank seventh among the major causes of death by 2030. Plants have been used to treat and prevent disease for thousands of years, and they are the source of many current medications. A natural product such as the Onodiab capsule, whose ingredients include Smallanthus sonchifolius, Camellia sinensis, Syzygium polyanthum, and Stevia rebaudiana, is one of the natural commodities. This review provides information on antidiabetic plants that has been gathered from various literature sources and databases. According to the findings of this study, the majority of the plants exhibit antidiabetic effects in some form. The hypoglycemic action of this plant may be found in a variety of components of the plant, including the leaves, rhizomes, fruit, bark, seeds, and other portions that vary from one species to another. In addition, it is clear from this analysis that the mechanism of action and the dosage required for administration differ from one plant to another.