HCRC FAQ Sheet

Dong Quai

By Maida Taylor, MD, MPH, FACOG

and Ellen Coleman, RD, MA, MPH

Dong Quai, dang gui, Tang Kuei (Angelica polymorpha Maxim. var Sinesis Oliv, aka A. sinensis [Oliv] Diels) is a type of angelica.

Dong Quai root is a mild laxative, although it is used primarily for its uterine tonic, antispasmodic, and "blood purifying" effects. Modern herbalists recommend it for almost all gynecological ailments, including menstrual cramps and irregular or retarded menstrual flow. It is said to bring relief from menopausal symptoms.

No substantiation exists for the claims made about dong quai, other than "the Chinese have used it for centuries." Herbal pharmacies producing commercial dong quai preparations typically recommend doses of between 300 and 500 mg three times a day. When prescribed in traditional Chinese medicines and compounds, several grams are often prescribed in combination with other herbs.

Seven different coumarin derivatives have been identified in dong quai. Many of these act as vasodialators and antispasmodics, others stimulate the central nervous system. Hypersensitivity to Dong Qaui may lead to excessive bleeding and occasional fever. The herb may also increase sensitivity to sunlight and interact with blood-thinning medications.

Dong quai should not be used during pregnancy or lactation.

Consumers should be aware that the herbal marketplace is entirely unregulated. Thanks to the 1994 Dietary Supplement and Health Education Act (DSHEA), herbal products don't have to be proven safe or effective to be sold. There is also no guarantee that the herbal product is what it says it is.

For More Information

• HCRC FAQ Sheet: Nutritional Supplements
• Ellen Coleman. Herbs for Health
• Maida Taylor, MD. Alternatives to Hormonal Replacement Therapy
• Search the HCRC and NCAHF Websites