Dong quai should not be used by people with bleeding disorders, excessive menstrual bleeding, diarrhea, abdominal bloating, or during infections such as colds and flu. Call your health practitioner if you experience bleeding, unusual bruising, diarrhea, or fever.
Dong quai may contain estrogen-like compounds and should not be taken by pregnant or nursing women, children, or people with breast cancer.
People taking blood thinners (anticoagulants) such as warfarin should not use Dong quai.
Dong quai should not be used during pregnancy, especially during the first trimester. It should also not be used during breast-feeding.
Dong quai can cause photosensitivity, so people should limit sun exposure and wear sunblock.
