Ban Xia Hou Pu Wan - is a traditional Chinese medicine (TCM) formula that is commonly used for regulating Qi and dispelling stagnant phlegm. It is composed of several herbs, including Ban Xia, Hou Po, Fu Ling, Sheng Jiang, and  Zi Su Ye 

According to TCM theory, Ban Xia Hou Pu Wan works by promoting the flow of Qi in the body, which helps to remove blockages and reduce stagnation. It is often used to treat conditions such as coughing, wheezing, and chest congestion, which are believed to be caused by stagnant phlegm.

Ban Xia, the main ingredient in the formula, is believed to have a drying and transforming effect on phlegm. 

Hou Po is used to regulate the Qi and relieve distention and fullness in the chest and diaphragm. 

Fu Ling is believed to promote urination and drain dampness, which can help to remove excess fluids from the body. 

Zi Su Ye is used to treat coughing and wheezing, while Sheng Jiang is believed to help disperse stagnant Qi and warm the middle burner. 

Studies have shown that Ban Xia Hou Pu Wan may be effective in treating coughs and phlegm-related conditions. For example, a study published in the Chinese Journal of Integrative Medicine in 2012 found that Ban Xia Hou Po Wan was effective in treating chronic obstructive pulmonary disease (COPD) in elderly patients. Another study published in the Journal of Traditional Chinese Medicine in 2013 found that the formula was effective in treating asthma in children.

Overall, Ban Xia Hou Po Wan is a traditional Chinese medicine formula that may be effective in regulating Qi and dispelling stagnant phlegm. However, as with all herbal remedies, it is important to consult with a qualified healthcare provider before using it, especially if you have any underlying health conditions or are taking other medications.

NOTE: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.