"Anti-Radiation" Pills Available In SC

For free.  Of course, they don't prevent radiation.  The pills are potassium iodide and the thyroid gland takes up the iodine in the pill.  If the pill is taken shortly before exposure to radioactive iodine (a common fission product) the thyroid gland will take up much less of the radioactive iodine.  This will minimize irradiation of the gland.