Disclosed is a method and composition for nutritional compositions containing -glucosidase inhibitors, and more specifically Touchi Extract and its uses in the treatment of many disorders. These disorders include diabetes, hyperlipidemia, obesity, Metabolic syndrome/Syndrome X, COPD, malabsorption, Crohn's disease, diarrhea, constipation, irritable bowel syndrome, human immunodeficiency virus, cystic fibrosis, non-alcoholic steatohepatitis, polycystic ovarian syndrome including associate infertility, and erectile dysfunction. Further, -glucosidase inhibitors, and more specifically Touchi Extract can be used to aid healing in critical care patients and for general wound healing. Additionally, -glucosidase inhibitors, including Touchi Extract can be used to enhance athletic performance.