Trientine is a medication used to treat Wilson's disease, a genetic disorder that causes copper to accumulate in the body. Like all medications, trientine may contain impurities that can potentially harm patients. Trientine impurities are unwanted substances that are present in the medication, which can affect its safety and efficacy. These impurities can be introduced during the manufacturing process or as a result of degradation during storage or transportation. The presence of these impurities can affect the quality of the medication and pose a risk to patients, hence it's important to ensure that the medication is free from harmful impurities before it is administered.