Bai Zhi (Dahurian Angelica Root). Its scientific name is Radix Angelicae Dahuricae. It is Pungent and warm in nature; As per TCM definition it covers meridians of lung, stomach and large intestine. Its main actions include expel wind and release exterior (nasal congestion and rhinitis), disperses pain (headache, sinusitis), relieve stuffy nose, and dry dampness (diseases of the nasal sinuses, purulent sinusitis, mastitis, leucorrhoea). All Phoenix Medical dry authentic herbs and concentrated herbal granules are free of sulphur, herbicides and pesticides.