Dong quai (angelica root) contains substances that, in clinical tests, have exhibited activities that may reduce pain, dilate blood vessels, and stimulate the relaxation of uterine muscles. The main use of Chinese Angelic Root (also called Dong Quai) as a medicinal herb is for treating female reproductive disorders, specifically for relieving mentrual cramps, regulating cycles and lessening the symptoms of menopause. However, there is no conclusive proof that angelica is effective in treating these conditions.
In oriental medicine, chinese angelica root is frequently combined with other herbal products and used to treat conditions including allergies, arthritis, asthma, or high blood pressure. Some studies have shown it has some ability to increase immune system function slightly, so it may in deed aid in relieving the symptoms associated with allergies. It has also been shown to exhibit mild anti-inflammatory properties, which may make it useful for arthritis, asthma, and other inflammatory conditions. One of the chemical substances present in angelic root has shown to promote relaxation of blood vessels, which may help to lower high blood pressure.