ThyroSafe is the only FDA approved 65 mg. Potassium Iodide (KI) tablet. It is used to protect your thyroid gland against radioactive iodine released during a nuclear emergency. It does this by flooding the thyroid with stable, safe iodine, which blocks the absorption of dangerous radioactive iodine. ThyroSafe is produced by Recipharm AB who has more than 20 …