Hi, the use of herbal-based medications has no scientific basis, with valid clinical studies. Therefore, they should not be used without the guidance of pulmonologists. That medications you use are excellent remedies, but you must follow a suitable technique for sucking the medication, and may need to use every day for a long time. There are several videos that teach how to use the correct technique of application of these medications. The COPD is a progressive disease that makes it difficult to exit air from the lungs and needs quite strict treatment not to worse. The treatment can be done with medication, smoking cessation and in advanced cases to the use of home oxygen therapy. I suggest you look for a pulmonologist to assess what will be the better drug therapy or even cardiopulmonary rehabilitation or the use of home oxygen therapy. Hope I have answered your question. If you have any further questions I will be happy to help you. Wish you good health.