Suwarti SA, Chan Y, Zainoeddin ZY, Taufik, Khairsyaf O J Respir Indo. 2012;32:233-9 Abstract Background: Chronic obstructive pulmonary disease (COPD) is a preventable and treatable disease with airflow limitation that is not fully reversible. Tobacco smoke and air pollution can cause oxidative stress which contribute in cell and tissue damage. N-Acetylcysteine is an antioxidant that […]