Displaying 4 results of Benzphetamine Impurities Benzphetamine is a sympathomimetic amine that acts as an appetite suppressant. However, during its synthesis, impurities may be formed that can affect the purity of the final product. These impurities can have adverse effects on the quality, safety, and efficacy of the drug. Therefore, it is important to monitor and control these impurities during the manufacturing process to ensure the highest quality of benzphetamine.