Menstrual Disorders PMS & PMDD Print Chasteberry for Treatment of Menstrual Problems Medically reviewed by Medically reviewed by Brian Levine, MD on November 01, 2019 Brian Levine, MD, MS, FACOG is board-certified in obstetrics and gynecology as well as in reproductive endocrinology and infertility. Learn about our Medical Review Board Brian Levine, MD Written by linkedin Written by Tracee Cornforth Tracee Cornforth is a freelance writer who covers menstruation, menstrual disorders, and other women's health issues. Learn about our editorial policy Tracee Cornforth Updated on November 28, 2019 Westend61/Getty images More in Menstrual Disorders PMS & PMDD Cycle Disorders Cramps Normal Menstruation Chaste tree berry (Vitex agnus-catus) or monk's pepper, is the fruit of the chaste tree. It is thought that the name chaste berry comes from the middle ages when monks reportedly used this fruit to decrease their sexual desire. This would help them avoid sex so they could remain chaste. Although there may not be a lot of evidence to support this use of chaste berry it points to the potent hormonal effects of this plant. Chasteberry contains many phytochemicals including flavonoids that are thought to have many positive effects on your health. Several different types of flavonoids have been found in chasteberry. It has been shown that some of these flavonoids can influence certain hormone levels in your body especially prolactin, progesterone and to a certain extent estrogen. Chasteberry has been used for centuries to treat several menstrual problems. It works mainly by its ability to influence certain hormone levels in your body. Prolactin At low doses, chasteberry may increase your body's production of prolactin. Chasteberry has traditionally been used in women who are breastfeeding to increase their milk supply. However, there is not enough evidence to support this use and some authorities strongly recommend against its use in breastfeeding women. At higher doses, studies suggest that chasteberry can decrease your prolactin levels. Even a slight increase in your prolactin levels (which commonly happens in response to stress) is thought to contribute to cyclic breast pain. It can also cause changes in your menstrual cycle that can affect your ovulation and your period. Progesterone Chasteberry is thought to increase the level of progesterone in your body. Certain conditions result from an improper balance of estrogen and progesterone. What Conditions Does Chasteberry Help? There has been considerable research mostly from Europe suggesting the effectiveness of chasteberry in treating the symptoms of: Premenstrual syndromeCyclic mastalgia (breast tenderness)Infertility due to elevated prolactin or inadequate progesterone (luteal phase disorder) Chasteberry has also been used to treat: Painful periodsMenopause symptoms For each of these conditions, the therapeutic effect of chasteberry is due to its ability to either decrease prolactin or increase progesterone to restore proper hormonal balance in your body. How Much Chasteberry Should I Take? The therapeutic dose of chasteberry depends on the brand and the formulation you chose. Chasteberry is available in liquid, capsules, and tablets. Most clinical trials used a dose of 20-40 mg/day although some clinical trials have used doses as high as 1800 mg/day. Problems associated with elevated prolactin may need higher doses. You should discuss the use of chasteberry with your healthcare provider. What Do I Need To Consider Before Trying Chasteberry? While chasteberry is not associated with any serious side effects, it can cause dizziness, abdominal cramping, nausea, fatigue, dry mouth, and skin reactions. It is also possible to see some changes in your period when you start taking chasteberry. Because chasteberry can alter progesterone and possibly estrogen levels in your body, women with hormone-related conditions such as breast cancer should not use chasteberry. Also, because chasteberry affects your dopamine system if you are taking medications for Parkinson's disease such as selegiline, amantadine, and levodopa should not use chasteberry. If you are pregnant it is recommended that you do not use chasteberry. It is also very important to understand that chasteberry may decrease the effectiveness of the combination hormonal contraceptives. In other words, taking chasteberry while using the oral contraceptive pill, the contraceptive patch, or Nuvaring for birth control increases the chance that you could get pregnant. Always tell your doctor about any herbs, OTC medications, and vitamin or supplements you are taking. Updated by Andrea Chisholm MD Was this page helpful? Thanks for your feedback! Sign up for our Health Tip of the Day newsletter, and receive daily tips that will help you live your healthiest life. Sign Up You're in! Thank you, {{form.email}}, for signing up. There was an error. Please try again. What are your concerns? Other Inaccurate Hard to Understand Submit Article Sources Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial policy to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. Birt DF, Jeffery E. Flavonoids. Adv Nutr. 2013;4(5):576–577. doi:10.3945/an.113.004465 Saleem M, Martin H, Coates P. Prolactin Biology and Laboratory Measurement: An Update on Physiology and Current Analytical Issues. Clin Biochem Rev. 2018;39(1):3-16. Sitruk-ware R, El-etr M. Progesterone and related progestins: potential new health benefits. Climacteric. 2013;16 Suppl 1:69-78. doi:10.3109/13697137.2013.802556 Patel S, Homaei A, Raju AB, Meher BR. Estrogen: The necessary evil for human health, and ways to tame it. Biomed Pharmacother. 2018;102:403-411. Kwan I, Onwude JL. Premenstrual syndrome. BMJ Clin Evid. 2015;2015:0806. Eren T, Aslan A, Ozemir IA, et al. Factors Effecting Mastalgia. Breast Care (Basel). 2016;11(3):188–193. doi:10.1159/000444359 Magyar K. The pharmacology of selegiline. Int Rev Neurobiol. 2011;100:65-84. doi:10.1016/B978-0-12-386467-3.00004-2 Reddy CC, Collins M, Lovell M, Kontos AP. Efficacy of amantadine treatment on symptoms and neurocognitive performance among adolescents following sports-related concussion. J Head Trauma Rehabil. 2013;28(4):260-5. doi:10.1097/HTR.0b013e318257fbc6 Salat D, Tolosa E. Levodopa in the treatment of Parkinson's disease: current status and new developments. J Parkinsons Dis. 2013;3(3):255-69. doi:10.3233/JPD-130186 Additional Reading Chasteberry NCCAM Herbs at a Glance; NCCAM; http://nccam.nih.gov/health/chasteberry/. Diana van Die M. et al, Vitex agnus-castus Extracts for Female Reproductive Disorders: A Systematic Review of Clinical Trials; Planta Med 2013; 79 (07): 562-575 Roemheld-Hamm,B. Chasteberry. Am Fam Physician. 2005;72(5):821-824 Continue Reading