Search info


What is dong quai?


Dong quai is a flower found in high elevations of China, Korea, and Japan. Dong quai is a phytoestrogen, substances that are chemically similar to the human hormone estrogen. Dong quai is available in soft-gel, capsule, and liquid forms. Dong quai's active ingredients - ferulic acid, ligustilide, and polysaccharides - are found in the plant's root.

Dong quai can cause the skin to be more sensitive to sunlight, so using a sunscreen is recommended. Some people may experience a slight laxative or bloating effect with dong quai. It may also increase hot flashes. Women with heavy menstrual flow or a presence of fibroids should not use it, as dong quai may increase bleeding. People who have diarrhea, a cold or flu, or bloating should not use it either. It should not be taken during pregnancy or if breast-feeding. Do not use purified forms of dong quai, which contain safrole - a substance that's been banned by the U.S Food and Drug Administration because it can cause cancer.

Shop for dong quai products available on

Back to Ask a Pharmacist


Answers to questions regarding information about medications or health conditions are not for diagnostic or treatment purposes and are not conclusive as to the presence or absence of any health condition. Consult your physician for diagnosis and treatment of your medical condition. The information provided is not a substitute for medical advice. Advances in medicine may cause this information to become outdated, invalid or subject to debate. Professional opinions and interpretations of the scientific literature may vary. Walgreens' terms of use and general warranty disclaimer apply to all services provided. If you are in need of immediate medical attention, contact your physician, poison control center or emergency medical professional. If you need to speak with a pharmacist for non-emergency matters, contact your local Walgreens pharmacist or call a pharmacist toll-free at 1 (877) 250-5823.

Balance Rewards for Healthy Choices

20 Points
20 Points

Now you can track your blood pressure and blood glucose.

Start earning points Go Arrow