Displaying 10 results of Neostigmine Impurities Neostigmine is a medication used to treat myasthenia gravis and certain types of muscle weakness. However, during the manufacturing process, impurities can be introduced which can affect the quality and effectiveness of the medication. These impurities can include residual solvents, degradation products, and other contaminants that can potentially harm patients. Therefore, it is important to monitor and control the production process to ensure the purity and safety of neostigmine.