Baiqian has the efficacy of lowering qi, eliminating phlegm and relieving cough, while Qianhu has the efficacy of lowering qi, resolving phlegm, dispersing wind and clearing heat.
It can be used for the treatment or improvement of lung qi congestion, cough and phlegm, and chest fullness and gasping (chest fullness with gasping and gasping).
Qianhu is the dried root of white-flowered or purple-flowered Qianhu of the family Umbelliferae, which is slightly cold in nature. Its effects include lowering qi, resolving phlegm, dispersing wind and clearing heat, and can be used for treating or improving phlegm-heat coughs and wheezing, yellowish-thickness of sputum, and coughs and phlegm-heat with excessive wind-heat.
If you need to use the above herbs, you should do so under the guidance of a doctor, and do not use them blindly, as this may cause damage to the organism.