Displaying 9 results of Naltrexone Impurities Naltrexone impurities are substances that are present alongside the active pharmaceutical ingredient, naltrexone, in drug products. These impurities may be formed during the manufacturing process or may result from degradation of the drug over time. Naltrexone impurities can affect the safety and efficacy of the drug, and therefore must be controlled and monitored to ensure the quality of the final product. Regulatory agencies have established guidelines for allowable levels of impurities in drug products, and manufacturers must adhere to these standards to ensure patient safety.