PulmCCM - May 03, 2014
"Can N-acetylcysteine help prevent exacerbations of chronic obstructive pulmonary disease (COPD)? Another randomized trial says yes.
N-acetylcysteine, or NAC, is a nutritional supplement with antioxidant and anti-inflammatory properties. After ingestion, N-acetylcysteine is metabolized into glutathione, a key antioxidant with effects throughout the body. In the lungs, glutathione deficiency (common in alcoholics) is linked to a higher risk for ARDS. People with COPD and smokers without COPD tend to have lower glutathione levels, which correlate with worse lung function."
http://pulmccm.org/main/2014/randomized-controlled-trials/n-acetylcysteine-copd-another-trial-shows-benefit/