Patent ID: 8273388

Claim:
A method for improving metabolic syndrome by administering a therapeutically effective amount of an extract product of Polygonum multiflorum Thunb. ex Murray var. hypoleucum (Ohwi) or of Polygonum hypoleucum (Ohwi) to a subject in need thereof wherein the extract product of Polygonum multiflorum Thunb. ex Murray var. hypoleucum (Ohwi) or of Polygonum hypoleucum (Ohwi) is prepared by the following method, comprising the steps of: (a) providing fresh or dry Polygonum multiflorum Thunb. ex Murray var. hypoleucum (Ohwi) or Polygonum hypoleucum (Ohwi) in partial or whole plant; (b) extracting Polygonum multiflorum Thunb. ex Murray var. hypoleucum (Ohwi) or Polygonum hypoleucum (Ohwi) by a solvent of water, alcohol, an aqueous alcohol solution or an ethyl acetate to obtain a crude extract; (c) condensing and drying the crude extract to obtain a Polygonum multiflorum Thunb. ex Murray var. hypoleucum (Ohwi) or Polygonum hypoleucum (Ohwi) extract product; and (d) collecting the extract product of Polygonum multiflorum Thunb. ex Murray var. hypoleucum (Ohwi) or of Polygonum hypoleucum (Ohwi).