Traditionally, dong quai is believed to have a balancing or “adaptogenic” effect on the female hormonal system. Contrary to the opinion of some authors, dong quai does not qualify as a phytoestrogen and does not appear to have any hormone-like actions in the body. This is partially supported by a double-blind trial with menopausal women that found no oestrogenic activity for the herb.² In Traditional Chinese Medicine, dong quai is rarely used alone and is typically used in combination with herbs such as peony and ligusticum for conditions such as menstrual cramps.³

Dong quai has been traditionally used as a way to promote formation of red blood cells, an effect partially supported in a case study of a man with kidney failure who had a significant improvement in anaemia due to dialysis while drinking a tea composed of dong quai and peony.⁴ No clinical trials have examined dong quai alone for this purpose, or for the treatment of other forms of anaemia.