Dong quai (Angelica sinensis), also known as Dang Gui, is an herb native to China, Japan, and Korea.
In addition to the issues mentioned above, dong quai is often touted as a treatment for headache, premenstrual syndrome, menstrual cramps, fibroids, nasal and/or sinus congestion, and rheumatoid arthritis. Unfortunately, there just isn’t enough solid science to back up the use of dong quai for these purposes.