PMS Support is a combination of herbal extracts formulated specifically to help women who experience common mild symptoms associated with their monthly menstrual cycle.* The herb Vitex acts on the pituitary gland, which modulates the production of luteinizing hormone.* This supports progesterone production and helps maintain a regular monthly cycle.* Dong Quai, another herb in this formula, acts to relax smooth muscles, relieving minor discomforts associated with the menstrual cycle.*