Packaged in the USA by a family owned and operated company since 1968. GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation). CLASSIFICATIONS/CERTIFICATIONS: Vegan, Soy Free, Non-GMO. NUTRITION FOR HEALTHY THYROID FUNCTION*: Potassium plus Iodine also supplies potassium, a mineral that is essential for the maintenance of healthy water and electrolyte balance, as well as whole body pH.*. THYROID SUPPORT*/SUPPORTS ELECTROLYTE BALANCE*: Potassium Iodide (KI) is a compound that contains iodine, a nutrient necessary for normal thyroid function.* Iodine, in the form of iodide, is an integral part of the thyroid secretions that regulate cellular metabolism and energy production.*.