A doctor prescribed me Betamethasone dipropionate for two weeks, 50-mcg-per-metered-spray, two puffs two times a day, then he said he would reduce the dose after two weeks. But I am concerned, since I checked online about this medicine, that two weeks is a very short period for this medicine to work properly. The doctor diagnosed me with bronchitis, and I may have chronic obstructive pulmonary disease (COPD) or some sort of asthma; pollution here in this country is really bad, and it is not the first time I have had the symptoms that made me go to see the doctor. I have constant, transparent nasal mucus, sneezing, and a constant feeling of mucus in my trachea or throat. No chest pain, no fever, and just constant mucus. Can you please comment on the dosage? What is the typical dosage for COPD?