Displaying 3 results of Benfotiamine Impurities Benfotiamine is a synthetic derivative of thiamine (vitamin B1) that is used as a dietary supplement. However, like any other synthetic compound, it may contain impurities during the manufacturing process. These impurities may include residual solvents, heavy metals, and other organic impurities that may impact the purity and safety of the compound. It is essential to ensure that the benfotiamine supplement is manufactured in compliance with Good Manufacturing Practices (GMP) to minimize impurities and ensure its quality.