Background: Chronic obstructive pulmonary disease (COPD) is characterized by chronic airflow obstruction and is one of the leading causes of death globally. The changes in pulmonary functions in COPD are irreversible with devastating consequences. Cognitive functioning in COPD patients is often found impaired and postulated to happen due to hypoxemia. i. https://parisnaturalfoodes.shop/product-category/immediate-relef/