Chronic obstructive pulmonary disease (COPD) involves lung inflammation, causing obstruction of airflow from the lungs. It is a chronic disease and symptoms include difficulty in breathing, mucus formation, wheezing, and others. COPD is a progressive lung disease, which includes chronic bronchitis, emphysema, and refractory asthma. Prime causes behind occurrence of chronic obstructive pulmonary disease include smoking, air pollution,