Displaying 4 results of Zopiclone Impurities Zopiclone is a hypnotic drug used to treat insomnia. However, during the manufacturing process, impurities may be formed which can affect the purity and quality of the drug. These impurities can have adverse effects on the human body, leading to potential health hazards. Therefore, it is important to monitor and control the levels of zopiclone impurities to ensure the safety and efficacy of the drug. Analytical techniques like HPLC, TLC, and GC are used to detect and quantify these impurities.