Displaying 4 results of Trimeprazine Impurities Trimeprazine is an antihistamine drug used for the treatment of allergic conditions such as hay fever, hives, and allergic rhinitis. Impurities in Trimeprazine refer to the presence of any foreign substances or compounds that are not part of the drug's intended chemical structure. These impurities can affect the drug's efficacy or safety and must be identified and quantified to ensure the drug's quality and purity. Common Trimeprazine impurities include related compounds, degradation products, and residual solvents.