Chaste tree berries (Vitex agnus-castus) are classified as a hormonal regulator, phytoestrogenic, anti-inflammatory, and adaptogenic herb. They are commonly used to support women's reproductive health, particularly in balancing hormones, alleviating symptoms of PMS, reducing menstrual cramps, and managing menopause symptoms. Chaste tree berries are also known for their ability to regulate the menstrual cycle and support overall hormonal balance.