Have you experienced any COPD exacerbation within the last 12 months while being under triple therapy? To join our clinical research study, potential participants must: Be at least 40 years of age, Have COPD and chronic bronchitis, Have had at least one COPD exacerbation (worsening of respiratory symptoms where you had to go to the ER or doctor’s office and it is documented) in the past 12 months.