Displaying 7 results of Ornithine Impurities Ornithine is an amino acid that is commonly used in the production of health supplements and pharmaceuticals. However, during the manufacturing process, impurities may be introduced, which can affect the safety and efficacy of the final product. Some common impurities in ornithine include heavy metals, solvents, and microbial contaminants. It is important to carefully monitor and control the production process to minimize the presence of these impurities and ensure the quality of the final product.