Displaying 10 results of Glutathione Impurities Glutathione is a naturally occurring antioxidant that is important for maintaining optimal health. However, when produced synthetically or extracted from natural sources, impurities can be introduced into the final product. These impurities can include heavy metals, residual solvents, and other contaminants that can negatively impact the effectiveness and safety of glutathione supplements. It is important to choose high-quality glutathione products from trusted manufacturers to ensure purity and efficacy.