abstract |
(57) [Summary] The object of the present invention is to provide a drug which is effective for improving or preventing diabetes and obesity. The present invention provides an α-amylase inhibitor comprising a crude drug of Rabo-Asaba and / or Yamashiko or an extract of Rabo-Asaba and / or Yamasako. The α-amylase inhibitor has an inhibitory effect on the digestive enzyme α-amylase which is a key to obesity in the body, and as a result, suppresses glucose absorption and fat accumulation in the body. |