Raltegravir Impurities are the byproducts or contaminants that may be present in Raltegravir drug substance or drug product. These impurities can arise from different sources such as starting materials, synthetic intermediates, or manufacturing processes. The presence of impurities can affect the safety and efficacy of the drug product, and therefore, their identification and control are essential to ensure the quality of the drug. Various analytical techniques are used to detect and quantify these impurities, and regulatory bodies have set limits on their levels in the drug product.