Vitex Agnus Castus, commonly known as chaste tree, is a shrub native to the Mediterranean and Asia. The seed or berry is commonly used as a Western herbal medicine. Sfera Agnus Castus is composed of chaste tree berry extract. Sfera Agnus Castus may assist in the relief of symptoms associated with menopause (hot flushes). It may help to stabilise menstrual cycle irregularities and relieve premenstrual symptoms.