Displaying 18 results of Fosfomycin Impurities Fosfomycin is an antibiotic used to treat bacterial infections. However, during the manufacturing process, impurities may be formed, which are unwanted substances that can affect the quality and safety of the drug. These impurities can include related compounds, residual solvents, and heavy metals. It is important to monitor and control the levels of these impurities in order to ensure the purity and efficacy of the final product.