Patient description: The patient is a 60-year-old Spanish man presenting with shortness of breath about a day before. The symptoms began acutely and progressively worsened. He is a known case of COPD since 2 years ago. The spirometry revealed post-bronchodilator FEV1/FVC = 60% of predicted values. He smokes 20 cigarette per day. His past medical history is remarkable for BPH and he is using Flomax for that. His family history is positive for HTN in his brother. His medication includes Duo-Neb inhaled q4 hr PRN, Vit D3 1000 units per day and Flomax for his PBH. He is an obese man who is acutely ill but oriented and conscious. The vital signs are as bellow: BP: 135/80 RR: 25/min HR: 75 bpm BMI: 40 O2sat: 90%

Clinical trial eligibility criteria: eligible ages (years): 40.0-80.0,  Chronic Obstructive Pulmonary Disease Chronic Bronchitis After signing the informed consent, screening testing will be done to document that a subject meets the requirements of the study. Specific are Subjects between the ages of 40 and 80 years of age (Dates of Birth 1925-1965) Current smoker (with smoking history of > 10 pack/year) or ex-smoker (stopped within 1 year and has at least a 10 pack/year smoking history) Subjects will be included if they meet for mild and moderate COPD as defined by the American Thoracic Society and European Respiratory Society position paper. Mild COPD will be defined as a postbronchodilator (2 puffs of albuterol) FEV1/FVC ratio of <0.7 and a predicted FEV1 of > 80%. Moderate COPD will be defined as a postbronchodilator FEV1/FVC ratio of <0.7 and a predicted FEV1 50-80%. A response to bronchodilators is defined as an increase of 12% or 200cc in FEV1 from baseline after inhalation of 2 puffs of albuterol. Both subjects with and without a response to bronchodilators will be included in the study All subjects will be clinically stable for 4 weeks prior to inclusion. Clinical stability is defined as having no recent COPD exacerbations within the last 4 weeks and having received no antibiotics or change in their inhaled steroid dose during that time period. If a subject is on oral steroids, they will be required to be on 10 mg or less each day or no more than 20mg every other day to be eligible. If the oral steroid dose has been titrated over the previous 4 weeks (either up or down) or if the dose is higher than what has been described previously, they will be ineligible for the study All subjects will be off of tiotropium or ipratropium for 1 month prior to the start of the study Chronic cough: Chronic cough will be characterized by the presence of a productive cough for 3 months in each of 2 successive years in persons in whom other causes of chronic cough have been excluded  Subjects will not be eligible for the study if they are Age of < 40 or > 80 years Refusal to volunteer for the study and not willing to sign the informed consent form Respiratory disorder other than COPD including asthma, chronic bronchiectasis or pulmonary fibrosis Oxygen or ventilator dependent COPD Received any antibiotics or had a change in their inhaled steroid dose during the last 4 weeks. If a subject is on oral steroids, they will be required to be on 10 mg or less each day or no more than 20mg every other day to be eligible. If the oral steroid dose has been titrated over the previous 4 weeks (either up or down) or if the dose is higher than what has been described previously, they will be ineligible for the study History of Congestive heart failure, cardiomyopathy, valvular heart disease, angina, cardiac arrhythmia, or myocardial infarction within the last 6 months or poorly controlled hypertension History of chronic hepatitis or hepatic cirrhosis End-stage renal disease History of neurologic or psychiatric disorder which would interfere with completion of the study