Displaying 6 results of Oxymetazoline Impurities Oxymetazoline is a nasal decongestant that is used to relieve nasal congestion caused by allergies or the common cold. However, like all drugs, oxymetazoline can contain impurities which can affect its efficacy and safety. These impurities can be generated during the manufacturing process or storage and can include degradation products, residual solvents, and heavy metals. Therefore, it is important to monitor and control the levels of impurities in oxymetazoline to ensure its quality and safety for use.