Displaying 9 results of Chlorphenamine Impurities Chlorphenamine, also known as chlorpheniramine, is an antihistamine medication used to treat allergic conditions such as hay fever, hives, and allergic reactions to insect bites or stings. However, like any other drug, chlorphenamine may contain impurities that can affect its safety and efficacy. These impurities may include residual solvents, degradants, and other contaminants that can arise during the manufacturing process. It is important to monitor and control these impurities to ensure the quality and safety of chlorphenamine products.