Agnus-castus, also known as Vitex agnus-castus or chasteberry, has been used for centuries in traditional medicine to address various health concerns, particularly those related to women's health. Agnus-castus is often used traditionally to regulate hormone levels, particularly in women. It is believed to act on the pituitary gland and helps normalize the production of various hormones, including prolactin, luteinizing hormone (LH), and follicle-stimulating hormone (FSH). This hormonal regulation can be beneficial for conditions like menstrual irregularities, premenstrual syndrome (PMS), and menopause symptoms. It's important to note that individual responses to agnus-castus may vary, and it's always recommended to consult with a healthcare professional before using any herbal supplements, especially if you have underlying medical conditions or are taking medications.