The present invention provides a composition for regulating blood sugar. The composition comprises at least one yellow pigment extracted from a red mold product, wherein the said yellow pigment is Monascin, Ankaflavin, or combination of Monascin and Ankaflavin. Moreover, results of a variety of animal experiments have proved that this blood sugar regulating composition indeed possess the functionalities of: lowering Hyperglycemia induced by high energy diet, alleviating ROS and inflammatory caused by the Hyperglycemia, reduce AST and ALT value of liver as well as sarcosine value of kidney.
