"Standarized Bioactive Herbal Extracts Having Antidiabetic Activity"

The present invention relates to standardized extracts of Cinnamomum cassia, wherein the extracts have antidiabetic activity. The present invention also includes the bioassay guided fractionation of the plant material leading to the identification of bioactive chemical constituents, processes for the preparation of the extracts from herb Cinnamomum cassia, processes for the isolation of the bioactive marker for the standardization of the extracts, methods of standardization of the extracts, wherein one compound serves as a marker to indicate the presence of an identified ingredient that give the herb its therapeutic properties and methods of treating diabetes.