Vitexin is an apigenin flavone glucoside, a chemical compound found in the passion flower, Vitex agnus-castus (chaste tree or chasteberry), in the Phyllostachys nigra bamboo leaves,[1] in the pearl millet (Pennisetum millet),[2] and in Hawthorn.

[3] Goitrogenicity of millet flavones : Vitexin inhibits thyroid peroxidase thus contributing to goiter.

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