VitexinVitexin is an apigenin flavone glucoside, a chemical compound found in the passion flower, Vitex agnus-castus, in the Phyllostachys nigra bamboo leaves, in the pearl millet, and in Hawthorn.Metabolismof millet flavones : Vitexin inhibits thyroid peroxidase thus contributing to goiter. Vitexin beta-glucosyltransferase Vitexin 2"-O-rhamnoside 7-O-methyltransferase