Displaying 3 results of Lanthionine Impurities Lanthionine is a naturally occurring amino acid found in various protein sources such as meats, eggs, and dairy products. However, during the manufacturing process of pharmaceuticals, lanthionine impurities can be introduced. These impurities can affect the safety, efficacy, and stability of the drug product. Therefore, it is important to monitor and control the levels of lanthionine impurities in pharmaceuticals.