From: Randomised, controlled trial of N-acetylcysteine for treatment of acute exacerbations of chronic obstructive pulmonary disease [ISRCTN21676344]
N-acetylcysteine (n = 25)
Placebo (n = 25)
Likert Score
0.16 (0.42)
0.35 (0.45)
FEV 1 % predicted
0.001 (0.015)
0.019 (0.019)
Sa0 2
0.40 (0.89)
0.88 (1.43)