Displaying 20 results of Methionine Impurities Methionine is an amino acid that is essential for human health. However, during the production of methionine supplements, impurities can arise that may pose health risks to consumers. These impurities can include heavy metals, residual solvents, and other contaminants that may cause adverse effects on the human body. Manufacturers must ensure the purity of their methionine products to prevent these impurities from causing harm to consumers. Regular testing and quality control measures should be implemented to ensure the safety and efficacy of methionine supplements.