Researchers at the Chang-Gung Hospital discovered that, when patients with acute period allergic rhinitis were treated with Chinese herbal formulas (Xin Yi San + Xiao Qing Long Tang + Xiang Sha Liu Jun Zi Tang), and those under recovery phase were treated with Bu Zhong Yi Qi Tang, clinical symptoms could be effectively improved by way of immune modulation.

At the “2009 Taipei Traditional Medicine International Forum”, Dr. Sien-Hung Yang, Director of the Department of Chinese Medicine, Chang Gung Menorial Hospital, presented a report titled: “Antiinflammatory effects of Bu zhong yi qi tang in patients with perennial allergic rhinitis”.

His study targeted patients with allergic rhinitis (year-round type). He prescribed Chinese herbal formulas for patients under acute phase as well as those under recovery phase in order to understand what effects immune adjustment mechanism might have on the human body.

It was discovered that, when patients under acute phase allergic rhinitis were treated with Chinese herbal formulas (Xin Yi San + Xiao Qing Long Tang + Xiang Sha Liu Jun Zi Tang) for 3 months, the ailment could be improved by way of adjustment of lymph corpuscle and neutrophilia leucocyte.

When the clinical symptoms improved from acute phase into recovery phase, patients were randomly divided into two groups for further study. Treatment group was treated with Chinese herbal formula “Bu Zhong Yi Qi Tang”, control group was treated with “Ping Wei San”. After a treatment period of 2 months, the results were analyzed.

For the treatment group, patients who took “Bu Zhong Yi Qi Tang” improved significantly based on the index of clinical symptoms. Results showed that “Bu Zhong Yi Qi Tang” could improve clinical symptoms associated with acute phase allergic rhinitis. This could be explained by the body's inflammatory initiated response reactions. The control group treated with “Ping Wei San” did not show similar improvements.

From this experiment, it has been shown that, when patients with acute phase allergic rhinitis are treated with Chinese herbal formulas (Xin Yi San + Xiao Qing Long Tang + Xiang Sha Liu Jun Zi Tang), and patients under recovery phase are treated with “Bu Zhong Yi Qi Tang”, clinical symptoms can be effectively improved by way of immune adjustment function.

*The news is from Sun Ten's  Modern Drug Weekly of Taiwan, Volume 2991, July 20, 2009

The original paper of "Antiinflammatory effects of Bu zhong yi qi tang in patients with perennial allergic rhinitis," has been published on  Journal of Ethnopharmacology 115(2008) 104-109