Displaying 4 results of Docusate Impurities Docusate is a stool softener medication used to relieve constipation. However, like all medications, docusate may contain impurities that can affect its quality and effectiveness. These impurities can be organic or inorganic compounds that are not intended to be present in the medication. Therefore, it is essential to monitor, control, and limit the level of impurities in docusate to ensure its safety and efficacy. Regulatory agencies have established guidelines and limits for the levels of impurities in medications