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)
Inhaled steroids
15
9
Oral prednisone
6
Short acting inhaled beta-agonists
20
19
Ipratropium bromide
14
Long acting inhaled beta-agonists
7
Theophylline
4
1