I have taken Qingfei Huatan pills produced by Kunming Chinese Medicine Factory, and the effect is very good. After eating two boxes, I stopped coughing and had less phlegm. Qingfei Huatan Pill, a traditional Chinese medicine in Kunming, is mainly aimed at cough and phlegm, and has a good effect on respiratory diseases such as tracheitis, bronchitis and emphysema. Not only is it relieving cough and resolving phlegm, but now the air pollution is serious, especially the smog in winter. Using a mask can only reduce the inhalation of pm2.5, but Qingfei Huatan Pill can remove the inhaled pm2.5 and protect the lungs. So, you can take it with confidence.