Displaying 2 results of Acitretin Impurities Acitretin is a medication used to treat psoriasis. However, during the manufacturing process, impurities may be introduced that can affect the safety and efficacy of the drug. These impurities can be residual solvents, degradation products, or by-products of the synthesis process. Therefore, it is important to monitor and control these impurities to ensure the quality of the final product.