Laperva Organic Vitex is a popular herbal supplement used to treat a variety of health problems. Vitex has been shown to help balance oestrogen and progesterone during the menstrual cycle and may alleviate PMS symptoms. It also regulates prolactin secretion in women. Vitex has been shown to improve fertility, particularly for women with luteal phase defects. Agnus castus has been shown in some studies to reduce breast tenderness. Some older, preliminary research suggests that vitex might help clear premenstrual acne, possibly by regulating hormonal influences.