维生素C片,由于主药维生素C为一强还原性物质,在贮存过程中易受空气、水份、光、热及微量金属离子(如Fe~(++),Ca~(++)等)的影响产生氧化,水解而使含量逐渐下降、颜色逐渐变深变黄,以致影响药品质量。其色泽变化程度因生产工艺、包装材料和贮存等条件的差异而有所不用。因此厂负责期比较短,多数控制在一年半。到了负责期并不意味药品质量已不合格,实践证明还有相当数 Vitamin C tablets, due to the main drug vitamin C is a highly reducing substances in the storage process vulnerable to air, water, light, heat and trace metal ions (such as Fe ~ (++), Ca ~ (++) and so on ) Of the impact of oxidation, hydrolysis and the content gradually decreased, the color becomes darker and darker, which affects the quality of medicines. The degree of its color change due to the production process, packaging materials and storage conditions such as differences need not. Therefore, the factory responsible for the shorter period, the majority of control in a year and a half. To the responsible period does not mean that drug quality has failed, practice has proved that there are a considerable number