Potassium Iodide (KI) is a compound that contains Iodine, a nutrient necessary for normal thyroid function.&ampnbsp;&ampnbsp;Iodine in the form of Iodide is an integral part of thyroid hormones, which regulate cellular metabolism and energy production.&ampnbsp;&ampnbsp;NOW&ampreg; Potassium Iodide Plus also supplies Potassium, a mineral that is essential for the maintenance of healthy water balance and whole body pH.*