Tang kui or Tang kuei, also known as dong quai, archangel root, female ginseng, Angelica sinensis or the Chinese angelica, is a perennial plant found along ravine streams, marshy meadows, river banks and sea coasts. It has long been used in traditional Asian herbal remedies and in homeopathic medicine. Tang kuei plant extracts are rich in calcium, essential oils, magnesium, iron, vitamin A and vitamin B, with the yellowish plant root considered to be of particular medicinal value.

The root is generally dried and ground into powder. This powder can be brewed as a tea, often taken with chamomile, or can be added as a nutritional, strength-building element to soups. The herb remedy is also available in tincture solutions and capsule forms, and can be purchased from online and regular health shops.

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