Chasteberry, also known as vitex, is an herb with a long history of use for women's health concerns. Although it is most commonly used for menopausal discomforts, it may also be helpful as a treatment for the symptoms of premenstrual syndrome (PMS). If PMS is interfering with your life, explore the possibilities of this natural treatment for moodiness, breast tenderness and other discomforts in the last week of your cycle.
History
The chasteberry, or Vitex agnus-castus, is the fruit of the small, shrub-like chaste tree. Native to the Mediterranean region, the chasteberry was historically used by men to reduce sexual desire. Women used chasteberry for a variety of problems and concerns related to the reproductive system, including menstrual difficulties and the production of breast milk, according to the National Center for Complementary and Alternative Medicine (NCCAM).
Function
Chasteberry affects hormones in the body, including prolactin and progesterone, reports American Family Physician. A low dose of chasteberry increases prolactin and progesterone levels and decreased estrogen levels. Higher doses of the herb cause lower prolactin levels. There area number of active constituents in chasteberry, including flavonoids, essential oils and iridoid glycosides, that may contribute to this herb's effectiveness as a treatment for PMS.
Significance
The hormonal effects of chasteberry make it clear why this herb has a long history as a treatment for menstrual problems. Studies back up the historical use of chasteberry for PMS. A well-controlled, double-blind study published in the British Medical Journal in 2001, "Treatment for the Premenstrual Syndrome with Agnus castus Fruit Extract: Prospective, Randomised, Placebo Controlled Study" by R. Schellenberg showed significant improvement in PMS symptoms when using chasteberry extract over three menstrual cycles.
Benefits
Although PMS may not be an issue for some women, for others, the irritability and discomfort in the week before menstruation can be difficult to manage. Medical options for treatment include some hormonal contraceptives or antidepressants; however, you may want a more natural option. Chasteberry offers a safe, low-risk, potential treatment for bloating, irritability, breast fullness and headaches, according to Maple Creek Naturals.
Dosage
Most studies have used a dosage of 4 mg per day of chasteberry in an extract standardized to 6 percent of the constituent agnuside. Chasteberry tincture is typically taken in a dose of 35 to 40 drops three times a day. Although chasteberry is generally well tolerated, if you take medications that impact dopamine, you should not take chasteberry. According to the NCCAM, it is possible that chasteberry will affect the function of hormonal medications, including birth control pills and hormone replacement therapy.


