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Content of isoflavone-containing preparations

Jan B Howes and Laurence G Howes
Med J Aust 2002; 176 (3): 135-136.

To the Editor: Preparations containing isoflavone phytoestrogens are widely used as an alternative therapy for treating symptoms of the menopause. Although Australian government regulations strictly control the components of alternative therapies, adherence to the stated amounts of the components in alternative therapies is not routinely assessed. Isoflavones exist in two forms — aglycone (the free form) and glycosylated or glycone (the conjugated form) — the relative proportions of which vary between preparations. As glycosylation contributes considerably to the mass of isoflavone molecules, it is relevant to consider the total amount of potentially available isoflavone in alternative therapy preparations.

  • Jan B Howes
  • Laurence G Howes


Correspondence: lhowes@unsw.edu.au

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