The chaste tree is a small, shrub-like tree. The berries of the chaste tree are used in herbal medicine to help treat premenstrual syndrome and menopause symptoms and to stimulate lactation, although evidence is conflicting as to its effectiveness. You should not take chasteberry supplements during pregnancy due to the risk for adverse effects.
Safety During Pregnancy
Chaste tree supplements are not recommended during pregnancy because they may affect hormone levels and stimulate uterine activity, bringing on menstruation and causing a miscarriage. Although there is limited evidence regarding the effects of chasteberry supplements during pregnancy, it is safest to avoid them due to the possible risks.
Other Contraindications
Some people are allergic to chaste tree, and most homeopathic chaste tree preparations are not safe for children due to a high ethanol content. Chaste tree may also interact with medications for Parkinson's disease, anti-psychotic medications, fertility medications and birth control pills. If you have breast cancer or another hormone-sensitive condition, you should also avoid chaste tree supplements.
Side Effects
Chaste tree is generally well-tolerated and side effects are usually mild. However, chaste tree supplements may cause side effects including rash, itching, fatigue, headache, dizziness, acne, hair loss, dry mouth, tiredness, increased menstrual flow and gastrointestinal problems. These side effects could be particularly problematic during pregnancy, as dizziness can increase your risk for falls and, as mentioned above, chaste tree could cause you to begin menstruating and cause a miscarriage.
Considerations
Speak to your doctor before taking chaste tree supplements to make sure it would be safe for you, and don't self-treat any condition with chaste tree supplements. If there is any chance you could become pregnant, you should be careful about taking chaste tree supplements. Many pregnancies are unplanned, and taking chaste tree supplements could lead to the unintentional ending of your pregnancy.
References
- Drugs.com: Chaste Tree
- "Canadian Journal of Clinical Pharmacology"; Safety and Efficacy of Chastetree (Vitus Agnus-castus) During Pregnancy and Lactation; J.J. Dugoua, et al.; 2008
- "American Family Physician"; Chasteberry; Beatrix Roemheld-Hamm, M.D.; September 2005
- National Center for Complementary and Alternative Medicine; Chasteberry; July 2010
