Herb Pharm prepares their Chaste Tree Extract from the berry of Vitex agnus-castus plants which are certified organically grown and/or sustainably wildcrafted in their natural habitat. To assure optimal extraction of Chaste Tree's bioactive compounds, the berries are hand-harvested only after they have fully ripened, are carefully shade-dried, and are then thoroughly extracted. This attention to detail produces a finished extract, which optimally represents the herb from which it was made. Herb Pharm's extracts are very rich in the aroma, taste and bioactive compounds of the original herbs themselves. They use pharmaceutical-grade, certified organic alcohol to make their liquid herbal extracts. Non-GMO + Gluten-Free.