METHODS The acetylcysteine capsules were prepared, and its dissolution was determined.The content was determined by oxido-reductometric method and high performance liquid chromatography.

• 方法:制备乙酰半胱氨酸胶囊,测定溶出度,以氧化还原滴定法及高效液相色谱法测定含量,并建立其质量控制标准。