Displaying 4 results of Thioridazine Impurities Thioridazine is an antipsychotic drug used to treat schizophrenia and other mental illnesses. However, the drug may contain impurities that can be harmful to human health. These impurities can include residual solvents, heavy metals, and other chemicals. Careful monitoring and control of the manufacturing process is necessary to ensure the safety and efficacy of thioridazine for patients.