Iodine is a required component of thyroid hormones that is involved in metabolism as well as growth and development. Supplying 7.5 mg of Iodine as Kombu extract, Iodine Px provides the major components of T3/T4 hormones. Iodine Px’s nutritional cofactors to support the organification of iodine and support the sodium-iodide symporter. Selenium is an essential component of the enzyme iodothyronine deiodinase which converts thyroxine (T4) to triiodothyronine (T3). Selenium may help to maintain thyroid hormone stability. Copper is included to help to control multiple hormone levels. Riboflavin is important for the production of FMN & FAD, activation of B6, conversion of tryptophan to niacin and conversion of folate to its coenzyme. Iodine Px is a “Restorative Roots” formulation, based on the Lugol iodine/iodide formulation that was used, with positive thyroid-balancing results, by the Eclectic Physicians during the early 1900s.