The Naysayers are correct. You cannot take Iodine by itself without getting some terrible reactions. These are called DETOX symptoms. You also cannot take Iodine without also taking selenium or you could suffer Hashimotos.
Every cell in our body requires iodine, and these cells have been taken over by the goitrogens fluoride, bromide, chlorine. The Dr. Brownstein Protocol tells us what to do to handle detox.