| 効果 | 減少 |
| 試験方法 | 二重盲検法 |
| 試験期間 | 6+ ヶ月 |
| 被験者数 | 50 |
| 性別 | 男女 |
| 年齢 | 45-64, 65+ |
| 体型 | 平均 |
この研究の注釈：
In sputum collected from the lungs of persons with COPD, ten months of supplementation (but not eight weeks) of 600mg N-acetylcysteine appeared to reduce the activation and adhesion of neutrophils to tissue, suggesting a mucolytic effect in the lungs.