Gemfibrozil is a medication used to treat high cholesterol and triglyceride levels in the blood. However, the production of Gemfibrozil can result in impurities that may affect the quality and safety of the drug. These impurities may include related substances, residual solvents, and degradation products. To ensure the purity and efficacy of Gemfibrozil, manufacturers must adhere to strict quality control measures and regulatory guidelines.