What is dong quai (Angelica sinensis), and what is it used for?
Dong quai is a plant and the root is used as a natural medicine to treat several conditions. Dong quai has some effects of estrogen and it may affect other hormones in the body. Dong quai also contain coumarins, which give it blood thinning effects in the body. Individuals should check with their physicians before using this compound.
What are the side effects of dong quai?
Side effects of Dong quai are skin irritation, sun sensitivity, bruising, and bleeding. It may increase the risk of cancer.
What is the dosage for dong quai?
The dosage for dong quai varies depending on the use. Note that different suppliers may suggest different doses:
- Premature ejaculation: A multi-ingredient topical cream, containing Dong quai, is applied to the penis one hour prior to sex and washed off immediately before sex.
- Menopausal symptoms: Take 4.5 grams of powder by mouth daily or 520 to 1560 mg by mouth three times daily with meals.
- Liquid extract: Take 1 ml by mouth three times a day.
Which drugs or supplements interact with dong quai?
Dong quai has blood thinning effects (slow blood clotting) and should not be taken with blood thinning medications like warfarin, aspirin, clopidogrel (Plavix), and pain medications like ibuprofen (Motrin), naproxen (Aleve, Naprosyn), and diclofenac (Voltaren). Such combinations increase the risk of bruising and bleeding. It should also not be combined with herbs that also slow blood clotting. Examples include angelica, clove, danshen, garlic, ginger, ginkgo, panax ginseng, poplar, red clover, and willow.

QUESTION
Next to red peppers, you can get the most vitamin C from ________________. See AnswerPregnancy and breastfeeding
Dong quai may affect muscles of the uterus in pregnant women and possibly be harmful to the fetus. Dong quai should not be used in pregnant women.
It is not known whether Dong quai enters breast milk; however, it is best to avoid Dong quai in nursing mothers to prevent harm to the newborn.
What else should I know about dong quai?
What preparations of dong quai (Angelica sinensis) are available?
Dong quai is available in capsules, liquid extract, and powder form. Concentration of Dong quai may vary from product-to-product due to multiple manufacturers producing various products.
How should I keep dong quai (Angelica sinensis) stored?
Due to multiple manufacturers making different forms of Dong quai, storage requirements may vary based on individual manufacturer practices.
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Summary
Dong quai (Angelica sinensis, Chinese Angelica, Tang Kuei, Tan Kue Bai Zhi, Tanggwi, Toki, Angelica China, female Ginseng) is an herbal supplement purported to treat premature ejaculations, premenstrual syndrome, symptoms of menopause, menstrual cramps, anemia, constipation, skin discoloration, joint aches and pains, ulcers, and high blood pressure. Side effects, drug interactions, and pregnancy safety information should be reviewed prior to taking this supplement.
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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.
REFERENCE:
MedlinePlus. Dong quai.