Patent ID: 6890561

Claim:
An orally-administrable formulation for the controlled release of an isoflavone-enriched fraction or mixture of such fractions, said formulation comprising microcapsules containing at least one granulated plant fraction enriched in isoflavones and at least one carrier, diluent or excipient therefor, said formulation being formulated so as to slowly release the isoflavones contained therein by virtue of said microcapsules being formed with a coating comprising a blend of at least two polymers, at least one of said at least two polymers being more hydrophilic than the other of said at least two polymers, the ratio of the less hydrophilic polymer to said more hydrophilic polymer being from about 90:10 to 50:50, said coating being applied to said granulated isoflavone-enriched fraction at a level of about 5 to about 45% by weight of said granulated isoflavone-enriched fraction component.