Dong quai is a plant and its root is used to make medicine. Dong quai comprises medicinal properties which really show many health benefits. Actually, in Chinese medicine this plant has been a very well-known ingredient for centuries and it has traditionally been used for everything from relieving depression to managing constipation. Nowadays, it is also often seen that Dong quai is used to help balance hormones and reduce symptoms of menopause.
The common health benefits of Dong quai include:

• Makes bones stronger by increasing bone cell formation and helping preserve bone mineral density [3][4]
• Helps people with diabetes [5]
• Helps people who have heart diseases, vascular diseases, and hypertension [6]
• Reduces inflammation [7]
• Relieves symptoms of menopause [8]
• Reduces depression [9]
• Balances hormones [10]
• Enriches blood, promotes blood circulation and modulates the immune system [12]
• Has muscle-relaxing properties [13]
• Relieves of menstrual disorders [14][15]
• Helps people fight cancer [16]

Bioactive components extracted from dong quai roots include Z-ligustilide, ferulic acid and AS polysaccharides. Major pharmacological effects of dong quai extract or its components include anti-inflammatory, anti-cancer, immunomodulatory, anti-cardiovascular, neuroprotective, anti-oxidative, anti-hepatotoxic and renoprotective activities.[11]
Dong quai has some compounds that may have the ability to help reduce pain, dilate blood vessels, and stimulate and relax uterine muscles. Dong quai may help with abnormal heart rhythm, hinder accumulation of platelets in blood vessels (contributing to plaque formation — atherosclerosis), promote urination, act as a mild laxative, promote sleep, and fight infection.