Bioceuticals ThyroPlexSupport for Healthy Thyroid Function Helps Maintain Healthy Immune System Function Supports the Production and Conversion of Thyroid Hormones ThyroPlex features a blend of nutrients, including iodine, which supports healthy thyroid gland function, plus the herbs bupleurum and schisandra. The nutrients iodine and selenium assist in the healthy production of thyroid hormones. Selenium, zinc and vitamins E and C are antioxidants that reduce free radicals