Chaste tree, also called vitex or chasteberry, is an herbal supplement that has been used historically for menstrual problems and to stimulate lactation. It is still used for hormonal problems, premenstrual syndrome and menopausal symptoms; however, its traditional use as a substance that enhances breast milk production is not well supported and is discouraged, according to a September 2005 article in the "American Family Physician." As with all herbal supplements, before you consume chaste tree supplements, talk with your doctor about whether it is safe for you to use.
Mild Side Effects
Chaste tree supplements are typically well-tolerated by most people, but some individuals may experience adverse side effects. Mild side effects of this herb can include slight gastrointestinal upset, headache, dizziness, fatigue and dry mouth. Nocturnal seizures have been reported when chaste tree was consumed with several other herbs, but the exact relationship between these seizures and chaste tree is not known. Drugs.com notes that other side effects can include alopecia, acne, heavier menstrual flow, itching and rash.
Hormone Interactions
Chaste tree has been used to help balance estrogen and progesterone, as well as to help treat menstrual irregularities. This herb can interact with birth control pills or other hormone medications. According to the National Center for Complementary and Alternative Medicine, women with hormone-sensitive conditions like breast cancer should not take this supplement. Pregnant women should not take chaste berry, and the evidence for its safety during breast feeding is not known, so it should not be used while nursing. Drugs.com states that women undergoing in vitro fertilization should not use chaste tree, as this herb may cause mild ovarian hyperstimulation and other adverse effects.
Dopamine Effects
Chaste tree has displayed dopaminergic activity and inhibits hormone-stimulated prolactin release. The dopamine-like properties, as well as its effect on hormones, account for the therapeutic properties of chaste tree. Individuals who are taking medications that interact with dopamine, such as some antipsychotic drugs and some drugs used to treat Parkinson's disease, should not take chaste tree because of the potential for interactions.
Considerations
Although chaste tree is an herbal supplement, it may not be safe or appropriate for everyone to use. It is important to use this supplement safely and not exceed the recommended dosages. Before using chaste tree, talk with your health care provider about any other medications or supplements you are taking to avoid any adverse interactions. Children should not consume chaste tree supplements; any allergic reactions should be reported to your doctor immediately.
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