PATENTED SILVER SUPPLEMENT (10 ppm Silver): Silver Sol is made in the USA using the patented SilverSol Technology. Colorless and odorless! BREAKTHROUGH TECHNOLOGY: This patented silver technology has undergone rigorous scientific review. Silver Sol is composed only of elemental silver (10 parts per million) and deionized water, and thus retains the characteristic properties of silver found in colloidal silver CERTIFICATIONS/CLASSIFICATIONS: Vegan/Vegetarian, Quality GMP Assured, Non-GMO, Soy Free GMP Quality Assured: A-rated, third-party certification means that every aspect of the NOW manufacturing process has been examined. Our in-house laboratories are ISO/IEC accredited for laboratory testing including for stability, potency and product formulation. Founded in 1968 by Elwood Richard, NOW is one of the largest independent, family- and employee-owned manufacturers of natural products