Displaying 9 results of Thiocolchicoside Impurities Thiocolchicoside is a muscle relaxant used to treat pain and stiffness caused by muscular conditions. However, the drug may contain impurities that can affect its effectiveness and safety. These impurities may include residual solvents, heavy metals, and other organic and inorganic compounds. Therefore, it is essential to monitor and control the levels of these impurities to ensure the quality and purity of Thiocolchicoside.