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upset stomach, nausea, itching, rash, headaches, acne, trouble sleeping, and weight gain. Some women notice a change in menstrual flow when they start taking vitex agnus-castus. Vitex-agnus-castus seed extract is POSSIBLY SAFE when applied to the skin appropriately.
Special Precautions & Warnings:Pregnancy and breast-feeding: Using vitex agnus-castus during pregnancy or breast-feeding is POSSIBLY UNSAFE. The concern is that vitex agnus-castus can interfere with hormones. Don't use vitex agnus-castus if you are pregnant or breast-feeding.
Hormone-sensitive condition such as endometriosis; uterine fibroids; or cancer of the breast, uterus, or ovaries: Vitex agnus-castus can affect hormones and might affect estrogen levels. Don't use vitex agnus-castus if you have a hormone-sensitive condition.
In vitro fertilization: Vitex agnus-castus can interfere with the effectiveness of in vitro fertilization. Don't use vitex agnus-castus if you are undergoing this procedure.
Parkinson's disease. Vitex agnus-castus contains chemicals that affect the brain. These chemicals affect the brain similarly to some medications used for Parkinson's disease. Therefore, vitex agnus-castus might affect therapy for Parkinson's disease.
Schizophrenia or other psychotic disorders. Vitex agnus-castus seems to affect a chemical in the brain called dopamine. Some medications for mental disorders help to decrease dopamine. Therefore, taking vitex agnus-castus might affect therapy for certain mental disorders.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.