What is Chasteberry Extract / Vitex?
Known by several names, chasteberry, chaste berry, chaste tree berry and vitex (or more properly Vitex agnus-castus: Agni casti fructus), this product works exceptionally well for PMS symptoms. Chasteberry has an excellent track record in relieving complaints collectively referred to as Premenstrual Syndrome. Specifically, it is effective in relieving insufficiency of the corpus luteum (luteal phase defect) which occurs when progesterone secretion is abnormally low. Chasteberry seems to stimulate the production cycle of progesterone.